Publications HAL de la structure Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés

2025

titre
Sleep-dependent infraslow rhythms are evolutionarily conserved across reptiles and mammals
auteur
Antoine Bergel, Julien Schmidt, Baptiste Barrillot, Sébastien Arthaud, Laetitia Averty, Mark Blumberg, Camille Carachet, Angeline Clair, Irina Filchenko, Chloé Froidevaux, Anthony Herrel, Bertrand Massot, Niels Rattenborg, Markus Schmidt, Mickael Tanter, Gianina Ungurean, Paul-Antoine Libourel
article
Nature Neuroscience, 2025, ⟨10.1038/s41593-025-02159-y⟩
resume
By recording brain activity in seven lizard species, humans, rats and pigeons, we demonstrate an infraslow brain rhythm during sleep in all species. This rhythm is tightly coupled with eye movements, muscle tone, heart and breathing rate in lizards, with skin brightness in chameleons and with pulsatile changes in cerebrovascular volume throughout sleep in bearded dragons and during non-rapid eye movement sleep in mice. These findings indicate that the infraslow rhythm is conserved across amniotes, questioning the evolution of sleep states.
typdoc
Journal articles
DOI
DOI : 10.1038/s41593-025-02159-y
Accès au bibtex
BibTex
titre
Catchment Productivity Controls Local Species Richness of Hyporheic Invertebrate Communities in Tropical New Caledonia Streams
auteur
Samuel Mouron, Yannick Dominique, David Eme, Nina Tombers, Diana M P Galassi, Pierre Marmonier, Michel Lafont, Colin Issartel, Christophe J Douady, Florian Malard
article
Ecology and Evolution, 2025, 15 (12), ⟨10.1002/ece3.72798⟩
resume
At continental to global scales, energy‐related predictors relate positively to regional species richness, often explaining much of its variation in different ecosystems. However, the influence of energy on local species richness (LSR) has received much less attention. In aquatic ecosystems, LSR is predicted to increase with increasing catchment terrestrial productivity. Greater food resources resulting from increased terrestrial subsidies of nutrients and organic matter to the stream can support more individuals, thereby enabling more species to attain viable local populations, a hypothesis known as the more‐individuals hypothesis (MIH). We used generalized linear models and variance partitioning to quantify the unique and shared effects of nine local predictors and nine catchment predictors on LSR of hyporheic communities sampled at 228 sites in tropical New Caledonia streams. We found that productivity proxies, including the proportions of peridotite and bare soil in the catchment, and the normalized difference vegetation index (NDVI), correlated strongly with proxies of sediment metabolism (dissolved oxygen and pH), which in turn accounted for much of the variation in LSR. However, the positive relationship between LSR and catchment productivity, and the resulting dominance of shared effects of local and catchment predictors, were largely driven by fast‐growing taxa. Their richness and abundance increased monotonically with increasing catchment productivity. The LSR of slow‐growing taxa was largely explained by local predictors, and it showed a weak, hump‐shaped relationship to catchment productivity. The additional food resources from more productive catchments could either not be assimilated by slow‐growing taxa or were monopolized by fast‐growing taxa. Hence, other processes than those underlying the MIH, including the competitive ability of taxa to acquire available resources, likely play a role in controlling the species‐energy relationship in hyporheic invertebrate communities.
typdoc
Journal articles
DOI
DOI : 10.1002/ece3.72798
Accès au texte intégral et bibtex
https://hal.inrae.fr/hal-05592958/file/2025_Mouron_Ecol_Evol.pdf BibTex
titre
Early to Middle Jurassic Ginkgoales from the Qaidam Basin, northwest China
auteur
Li Zhang, Yongdong Wang, Hongyu Chen, Yanbin Zhu, Aowei Xie, Pengcheng An, Gaëtan Guignard, Micha Ruhl
article
Papers in Palaeontology, 2025, 11 (6), pp.e70054. ⟨10.1002/spp2.70054⟩
resume
ABSTRACT Once widespread in the Mesozoic but now represented by a single species, Ginkgoales is an example of long‐term morphological stasis (evident in the similarities between fossil and modern forms), providing critical evidence for systematics and palaeoenvironmental reconstruction. In this study we investigate the Early to Middle Jurassic Ginkgoales from the Dameigou and adjacent areas in the Qaidam Basin, northeastern Qinghai‐Xizang (Tibetan) Plateau, China, focusing on three common fossil genera: Ginkgoites , Baiera and Sphenobaiera . Based on 128 fossil specimens from eight fossil‐bearing layers in the succession and their macro/microcharacters, we identified 10 species, illustrating the diversity within Ginkgoales during the Early–Middle Jurassic interval in the area. Multivariate analyses of the macrocharacters matrix, based on quantitatively measurable leaf traits, facilitated the classification of ginkgoalean fossils that were not preserved with cuticles at the genus level. Species‐level classification remains challenging due to the potential heterophylly of the Ginkgoalean leaves. Micromorphological traits, however, show promise in resolving species boundaries. The species‐ and morphology‐level diversity in ginkgoaleans may emphasize their different adaptative strategies to local environmental conditions across time. Despite substantial environmental changes, some species, including Ginkgoites qaidamensis (Li) Zhang & Wang, G. longifolius Harris and Sphenobaiera spectabilis (Nathorst) Florin, show morphological stability spanning Early to Middle Jurassic strata. These findings enhance our understanding of the evolution and resilience of Ginkgoales, and offer insights into plant adaptability during the Early to Middle Jurassic.
typdoc
Journal articles
DOI
DOI : 10.1002/spp2.70054
Accès au bibtex
BibTex
titre
Inferring bird migration from bone isotopes and histology: A fossil‐friendly methodological framework
auteur
Anaïs Duhamel, Aurore Canoville, Arnaud Vinçon-Laugier, Julien Joseph, François Fourel, Christophe Lécuyer, Romain Amiot, Antoine Louchart
article
Methods in Ecology and Evolution, 2025, 17 (2), pp.531-553. ⟨10.1111/2041-210x.70211⟩
resume
Abstract Bird seasonal migration is a remarkable biogeographic phenomenon, yet its deep‐time origin(s) and evolutionary history remain poorly understood, with the bird fossil record largely overlooked. This study explores the predictability of bird migratory behaviour from the oxygen isotope composition of their bone apatite phosphate (δ 18 O p ), a promising approach in this regard because: (i) sedentary and migratory birds tend to occupy distinct climatic niches year‐round; (ii) their δ 18 O p values primarily reflect the climate‐driven isotopic composition of their drinking water; and (iii) this isotopic signature can persist through fossilisation. Bone tissues were categorised based on their potential to yield spatio‐temporally distinct climatic records: early bone tissues (EBT), deposited before somatic maturity, and late bone tissues (LBT), formed through bone remodelling over the lifespan. The predictability of migratory behaviour was theoretically assessed by modelling tissue‐specific δ 18 O p values for thousands of birds across 77 migratory and sedentary species, using tracking and observational data along with a revised phosphate‐water fractionation equation. These theoretical results were confronted with data from 11 extant bird species, obtained using a new experimental framework combining histological and isotopic analyses. A significantly positive correlation between δ 18 O p and the proportion of LBT in bone samples was observed both theoretically and experimentally in migratory birds—particularly in long‐distance migrants—and is predicted to be virtually absent in sedentary species at temperate latitudes. Migratory birds that died outside their natal sites can also be identified when their δ 18 O p,EBT values fall outside the range observed in local juvenile and sedentary birds. We conclude that bird migratory behaviour can be inferred from the δ 18 O p values of their skeletal remains, provided the individuals migrated across sufficiently contrasting climatic zones. While this approach cannot detect all migratory behaviours—such as short‐distance or longitudinal movements—it is unlikely to misclassify sedentary birds as migratory at temperate latitudes. We therefore argue that this approach can be extended to well‐preserved fossil bones to infer past bird migratory behaviours, as long as the palaeoclimatic context is carefully considered. More broadly, this study establishes a framework for inferring migratory behaviour in any vertebrate from non‐fully remodelled biomineralised remains.
typdoc
Journal articles
DOI
DOI : 10.1111/2041-210x.70211
Accès au bibtex
BibTex
titre
The Empire Builders: A multi-isotopic analysis of the skeletal remains from the Llullaillaco volcano cemetery (Salta, Argentina)
auteur
Eve Poulallion, Violeta Killian Galván, Verónica Seldes, María Fernanda Zigarán, Gabriela Recagno Browning, Pablo Mignone, François Fourel, Pascale Richardin, Bruno Maureille, Christophe Lécuyer
article
Journal of Anthropological Archaeology, 2025, 80, pp.101729. ⟨10.1016/j.jaa.2025.101729⟩
typdoc
Journal articles
DOI
DOI : 10.1016/j.jaa.2025.101729
Accès au bibtex
BibTex
titre
Observing social and environmental change in a large regulated river: the Rhône Valley Human-Environment Observatory
auteur
Carole Barthélémy, Fanny Arnaud, Brice Mourier, Bertrand Morandi, Hervé Piégay
article
Comptes Rendus. Géoscience, 2025, 356 (S3), pp.1-20. ⟨10.5802/crgeos.314⟩
resume
Following the major floods of the early 2000s, the Rhône river has been the focus of an integrated management plan, the Plan Rhône . This plan advocates a new way of managing the river from a sustainable development perspective. The Rhône Valley Human-Environment Observatory (OHM VR) was set up in 2010 with sustainable development as a foundation applied to the scale of the river. The scientific objectives of the OHM VR have been to monitor the effects of this new management approach in a perspective of a highly anthropised socio-ecosystem, by studying the socio-environmental responses and adaptations in the Rhône corridor following a change in the mode of river management. Priority scientific themes were developed with the aim of covering most of the questions raised by this new mode of management: to achieve a better understanding of the geo-historical trajectory of the river to situate temporally the crisis events and their consequences; to provide insight into the new modes of management from a socio-political point of view and their reception by the local populations; to study the socio-economic processes in a context of ecological restoration actions; to analyse the environmental risks, in particular pollution; and to develop new tools to support the research works and the diffusion of scientific results. Interdisciplinarity and relations with local stakeholders provide the framework for these investigations. This article provides an overview of the activities of the OHM VR and their evolution since its creation, with a particular focus on two interdisciplinary case studies that have shaped collective scientific thinking in recent years.
typdoc
Journal articles
DOI
DOI : 10.5802/crgeos.314
Accès au texte intégral et bibtex
https://hal.science/hal-05380409/file/Barthelemy_et_al_CRGEOS_2024__356_S3_A9_0.pdf BibTex
titre
Environmental radioactivity impacts bioenergetic in tree frog of Fukushima
auteur
Lea Dasque, Damien Roussel, Jean-Marc Bonzom, Olivier Armant, Clément Car, Kenji Nanba, Hiroko Ishiniwa, Toshihiro Wada, Ikuo Miura, Vanessa Gardette, Virginie Camilleri, Laurent Simon, Marie-Laure Delignette-Muller, Sandrine Frelon, Nathalie Mondy
article
Environmental Pollution, In press, 385, pp.127147. ⟨10.1016/j.envpol.2025.127147⟩
resume
The Fukushima Daiichi Nuclear Power Plant accident in 2011 resulted in the contamination in radionuclides of the surrounding environment and led to a chronic exposure of local wildlife to ionizing radiation for over a decade. This study investigates the long-term effects of radiocontamination on the tree frogs (Dryophytes leopardus) in Fukushima Prefecture, focusing on bioenergetics, a major process that governs survival and reproduction. Males tree frogs were collected along a gradient of radiocontamination during the breeding season and their energy metabolism was examined, particularly in trunk muscles, heavily involved in calling, and liver, a key organ for detoxification. Our results show that aerobic metabolism in trunk muscles increases with ionizing radiation dose rate, associated with an increase in mitochondrial oxidative capacity. In contrast, liver tissues exhibit a decrease in aerobic metabolism, compensated by an upregulation of anaerobic processes, likely due to tricarboxylic acid cycle impairment. Additionally, we observed an increase in both the hepatosomatic index and overall body condition with rising ionizing radiation levels, indicating physiological changes. These findings suggest that more than ten years after the initial radiocontamination, metabolic processes and physical condition of tree frogs in Fukushima are still modulated in radiocontaminated areas. This highlights the need for further investigations into the ecological and evolutionary consequences of long-term ionizing radiation exposure in affected wildlife populations.
typdoc
Journal articles
DOI
DOI : 10.1016/j.envpol.2025.127147
Accès au texte intégral et bibtex
https://hal.science/hal-05283164/file/Dasque%20preprint.pdf BibTex
titre
CODABEILLES: a reliable reference library of COI DNA barcodes for French wild bees monitoring (Apoidea: Anthophila)
auteur
Mélodie Ollivier, Anaïs Marquisseau, Éric Dufrêne, Rémi Rudelle, Rodolphe Rougerie, Adrien Perrard, Magalie Pichon, Emilie Andrieu, Emmanuelle Artige, Matthieu Aubert, Yvan Brugerolles, Alexandre Cornuel-Willermoz, Raphaël da Silva Ropio, Adeline Dumet, David Genoud, Benoît Geslin, Laurent Guilbaud, Bernard Kaufmann, Lara Konecny, Anne-Laure Jacquemart, Danny Lebreton, Vincent Leclercq, Gabriel Nève, Annie Ouin, Christophe Philippe, Bertrand Schatz, Jean-Claude Streito, Héloïse Vallod
article
BMC Ecology and Evolution, 2025, 25 (1), pp.121. ⟨10.1186/s12862-025-02429-0⟩
resume
In the Anthropocene, the decline of insect pollinators poses a significant threat to ecosystem services, particularly to wild bee populations essential for plant biodiversity and agricultural productivity. France, with 983 species, hosts one of the most diverse bee faunas in Europe, yet these species face growing pressures from habitat loss, climate change, and intensive agriculture. Addressing this crisis requires robust taxonomic frameworks and efficient species identification methods to support long-term monitoring initiatives such as the European Pollinator Monitoring Scheme, EU-PoMS. DNA barcoding, utilizing the COI-5P gene, has proven effective for species delineation and biodiversity monitoring, particularly in detecting cryptic diversity among genera with large numbers of species such as Andrena, Nomada or Lasioglossum. However, significant gaps remain in reference libraries, particularly for the species from the Mediterranean Basin. To bridge this gap, the CODABEILLES initiative was launched in 2021 to enhance barcode data for the French bee fauna. Initially, only 25% of species had barcodes from French voucher specimens, increasing to 62% when considering voucher specimens from other countries. By 2025, thanks to collaboration with sixteen specialists and institutions, CODABEILLES contributed 1477 reference barcodes, covering approximately 560 species and raising barcode coverage to 82%. When integrating data published under other initiatives over the same period the coverage reaches 94% of the French bee fauna. This dataset significantly enhances species identification accuracy and supports large-scale pollinator monitoring through metabarcoding and environmental DNA approaches. Despite the success of COI-5P barcoding, taxonomic inconsistencies persist, necessitating further integrative research. This study underscores the need for continued collaboration among taxonomists, molecular biologists, and conservationists to refine species classifications and ensure comprehensive reference databases. The improved barcode coverage provided by CODABEILLES paves the way for more accurate DNA-based monitoring of wild bee populations and their ecological interactions, crucial for guiding conservation strategies in the face of ongoing environmental change.
typdoc
Journal articles
DOI
DOI : 10.1186/s12862-025-02429-0
Accès au texte intégral et bibtex
https://hal.inrae.fr/hal-05383188/file/2025-Ollivier-BMCEcolEvol.pdf BibTex
titre
How macrophytes can improve the ecological assessment of rivers in a multiple-pressure context: development of a new diagnostic tool
auteur
Thibault Leboucher, Jérémy Bacon, Christian Chauvin, Elise Billoir, Maud Pierre, Augustine Fulcrand, Bastien Bourillon, Philippe Usseglio-Polatera
article
Water Research, 2025, 286, pp.124173. ⟨10.1016/j.watres.2025.124173⟩
resume
To achieve the European Union’s water policy objective of “good” ecological status for all water bodies, a number of biotic indices have been developed, some of which are based on macrophyte communities. Despite the initial targets, 60% of water bodies still fail to achieve this status. One of the numerous reasons for this is the difficulty of accurately identifying the real causes of the degradation of water bodies, especially in a context of multiple pressures, so that truly effective restoration measures can be taken. To disentangle the effects of these co-occurring anthropogenic pressures on rivers, we have developed a diagnostic tool based on random forest models to predict the probability of impairment of river macrophyte communities. Thirteen categories of pressure on water quality, including diffuse contaminations by micropollutants (such as Polycyclic Aromatic Hydrocarbons and pesticides), and seven categories of pressure linked to hydromorphological alterations, were taken into account. By modifying local environments, each individual pressure induces changes in the taxonomic composition of macrophyte assemblages and in the adaptations selected within these assemblages. Based on a large set of taxonomic and functional metrics, this diagnostic approach has been illustrated in its ability (i) to monitor these changes at the river reach scale, but also (ii) to highlight clear spatial or temporal trends in the evolution of anthropogenic pressures on the scale of mainland France. The proposed models, based on macrophytes, are ecologically relevant and are promising for identifying water quality and habitat degradation from springs to lowland rivers. We hope that this progress will lead to a better understanding of the causes of river degradation, which will consistently help river managers to make better conservation or restoration decisions.
typdoc
Journal articles
DOI
DOI : 10.1016/j.watres.2025.124173
Accès au texte intégral et bibtex
https://hal.science/hal-05184203/file/1-s2.0-S0043135425010802-main.pdf BibTex
titre
Multigenerational effects of nanoplastics on life-history traits and physiological responses in Drosophila melanogaster
auteur
Chloé M.C. Richard, Hervé Colinet, Mélanie Boël, Stéphane A.P. Derocles, Clémentine Goupil, Théo Laguilliez, David Renault
article
NanoImpact, 2025, 40, pp.100597. ⟨10.1016/j.impact.2025.100597⟩
resume
The ubiquitous presence of nanoplastics (NP) in the environment has emerged as a global concern. Their impacts have been mostly studied in aquatic ecosystems and species, and more recently, in terrestrial species. In addition, the toxicity of NP on organisms exposed continuously to this pollutant and over multiple generations remains poorly considered. Our study focused on the effects of chronic exposure of a polydisperse mix of polystyrene NP (20, 80, and 200 nm) on the fruit fly Drosophila melanogaster to four NP concentrations (0, 1, 100, and 500 μg NP.g-1 of food) over 10 generations. Their toxicity was assessed at the first (F1) and tenth (F10) generations by evaluating phenotypic (viability, development time, body size and body weight) and physiological responses, through enzyme activities related to oxidative stress and the expression of specific target genes (e.g. apoptosis, immunity). Our results showed a decrease in organisms' key traits in the first and tenth generations, with a reduced viability and body size. Additionally, superoxide dismutase (SOD) activity was altered, with a decrease observed in the F1 generation, followed by an increase in F10, in flies exposed to 500 μg NP.g-1. Finally, the expressions of target genes involved in apoptosis and immune responses were either up- or down-regulated, depending on the generation. These results highlighted the effects NP can have on life-history or physiological traits without higher effect across generations. In addition, the study reveals the complex response across generation and highlights the importance to study long-term exposure.
typdoc
Journal articles
DOI
DOI : 10.1016/j.impact.2025.100597
Accès au texte intégral et bibtex
https://univ-rennes.hal.science/hal-05379280/file/1-s2.0-S2452074825000576-main.pdf BibTex
titre
Carbon source utilization regulates biofilm formation and plant-beneficial interactions of Pseudomonas ogarae F113
auteur
Théophile Franzino, Hasna Boubakri, Lisa Merlin, Amandine M’sakni, Michel Droux, Florian Mermillod-Blondin, Yvan Moënne-Loccoz, Mohammed Bendahmane, Judit Szécsi, Feth El Zahar Haichar
article
iScience, 2025, 28 (11), pp.113639. ⟨10.1016/j.isci.2025.113639⟩
resume
Root exudate determines the gene expression of root associated bacteria, but the underlying mechanisms are poorly understood. We tested the hypothesis that carbon sources within root exudates regulate interactions of beneficial bacteria with the plant via carbon catabolite repression (CCR). Mutants in CCR genes were constructed in Pseudomonas ogarae F113, and rhizospheric traits were studied. P. ogarae F113 displays reverse CCR. The Δcrc mutant produced more biofilm than the wild-type strain, and its swimming was carbon source dependent. On roots, the bacterial expression of nirS, crcY, and crcZ was higher in the Δcrc mutant. Auxin expression (but not jasmonate signaling) in Arabidopsis thaliana was reduced upon inoculation by Δcrc or ΔcbrB mutants when compared with the wild-type strain. Our findings show that reverse CCR regulates the communication between P. ogarae F113 and A. thaliana, which sheds further light on the significance of root exudates for the functioning of plant-beneficial bacteria on roots.
typdoc
Journal articles
DOI
DOI : 10.1016/j.isci.2025.113639
Accès au texte intégral et bibtex
https://hal.inrae.fr/hal-05362697/file/2025%20Franzino%20-%20iScience%20Pseudomonas.pdf BibTex
titre
Historical range of wildfire regime in black pine forests outside actual target of public policies
auteur
Justin Badeau, Peter Fulé, Frédéric Guibal, Serena Felix, Amandine Burguet-Moretti, Pasquale Moneglia, Christopher Carcaillet
article
Journal of Environmental Management, 2025, 394, pp.127671. ⟨10.1016/j.jenvman.2025.127671⟩
resume
With global changes, disturbances including wildfires are expected to change, with consequences for ecosystems. The chief fire control policy of “fire suppression” aims to limit their numbers and areas. Mediterranean forest ecosystems have coevolved with fires, despite millennia of land use. Biota, climate and humans have long interacted to establish fire regimes in these socio-ecosystems. Sustainable fire stewardship should reconcile the protection of resources and people, while being realistic about the ability to limit all fires and preserving the ecological functions they provided. The past fire regime must be known and compared to the suppression objectives. We hypothesised that fires were infrequent and smaller, but with global changes in recent decades, they would be more frequent, and the burned areas would have increased. We addressed the fire regime (intervals, areas, season) in Corsican black pine forests, western Mediterranean, by reconstructing fire regime from geolocated fire scars dated by dendrochronology. The results show that fire intervals are currently long (40 years), whereas they have fluctuated several times over the past 300 years. Intervals were shorter (10 years) in 1719–1848 and 1923–1970. Burned areas also fluctuated, with larger areas occurring in 1849–1916. Fire seasons have not varied for at least 300 years. We highlighted a non-stochastic regime of fire intervals uncorrelated with burned areas. The fire regime targeted by public policies is not aligned with the historical regimes. We argue for new policies to prevent large fires, which could be more destructive than the frequent and low intensity observed over centuries
typdoc
Journal articles
DOI
DOI : 10.1016/j.jenvman.2025.127671
Accès au bibtex
BibTex
titre
Combined effects of application-specific plastic composition and environmental conditions on algal pigments and microbial activity of freshwater biofilms
auteur
Camille M Touchet, Florian Mermillod-Blondin, Sylvain Dolédec, Zoraida J Quiñones-Rivera, Ludovic Guillard, Laurence Volatier, Félix Vallier, Marjolaine Rey, Stefan Krause, Laurent Simon
article
Environmental Pollution, 2025, 387, pp.127323. ⟨10.1016/j.envpol.2025.127323⟩
resume
Plastic pollution is extremely complex due to the variety of materials resulting from the mixing of synthetic polymers and chemical additives to match their intended applications. Such application-dependent chemical compositions complicate the assessment of plastics' ecotoxicological effects and impacts on biological communities and ecosystem functioning. Our study investigates how plastics affect freshwater microbial community composition and metabolic activity. To that end, we selected eight plastic materials from four polymer types and grouped them by their regulatory classification application ("medical or food grade" vs. "non-medical or food grade") to distinguish material effects from application-dependent chemical composition. After six weeks of biofilm development in three freshwater basins, we analyzed microbial biomass, metabolic functions (photosynthesis, respiration, esterase activity), and algal pigment composition on plastic surfaces and on a chemically inert control. We found that microbial biomass and metabolic activity were more controlled by environmental factors (e.g. suspended solids and light exposure) than by the polymer material and its application, except for esterase activity which was significantly higher in biofilms found on plastics than those found on the control. Algal pigment composition was controlled by both application-dependent plastic composition and environmental conditions. Our study emphasizes the need to consider material properties (e.g. polymer type), intended application (e.g. specific chemical composition) and environmental conditions (e.g. light, suspended solids) to better understand plastic-microbe interactions, which would allow for improved guidance and consequently effective future legislation on polymers and chemical additives.
typdoc
Journal articles
DOI
DOI : 10.1016/j.envpol.2025.127323
Accès au texte intégral et bibtex
https://hal.science/hal-05338470/file/1-s2.0-S0269749125016975-main.pdf BibTex
titre
Un forum étudiant d’indicateurs de la transition écologique pour refaire le monde
auteur
Anne-Laure Badin, Fabrice Bardet
article
Journal Enseigner les Enjeux Socio-Écologiques dans le Supérieur, 2025, 2 (1), pp.15-27. ⟨10.53480/jeeses.bedc⟩
resume
La notion de transition écologique s’est imposée dans le paysage institutionnel français en 2017, puis rapidement dans de nombreux cursus académiques. L’école Nationale des Travaux Publics de l’Etat (ENTPE) forme des ingénieurs et ingénieures de l’aménagement durable des territoires. L’ENTPE, forte d’une tutelle du ministère de la transition écologique, a mis en place un enseignement de 200 h dédié à la transition écologique et solidaire. Cet article détaille la conception et le développement d’un module clef de ce cursus : la création d’un forum étudiant des indicateurs de la transition. Il permet d’amener les élèves à débattre des métriques (statistiques, comptabilités, indicateurs) de la transition devant et avec des élus et élues, et des professionnels et professionnelles. Les indicateurs débattus varient en fonction des années autour d’une liste première : bilan d’émissions de gaz à effet de serre (BEGES), Analyse en Cycle de Vie (ACV), services écosystémiques, indicateur de santé des sols, Indicateur de Bien-Etre Soutenable et Territorialisé (IBEST), limites planétaires, indicateur de comptabilité écologique (Care), indicateur de santé sociale, évaluation quantitative d’impact sanitaire. Il s’agit pour les élèves d’envisager comment les comptes de la transition sont insérés ou coélaborés dans des programmes d’action publique ou d’entreprises, et de s’interroger : qui les soutient ? Qui les conteste ? Avec quels résultats ? L’enjeu ultime est de saisir qu’aucun compte ne peut s’imposer par sa seule intelligence interne, que chacun dispose de ses qualités et limites, liées à la multiplicité des intérêts contradictoires qui animent une société. Cette compréhension de la pluralité des enjeux doit permettre aux futurs ingénieurs et futures ingénieures de se positionner en conscience et de manière efficace pour favoriser une transition écologique et solidaire de nos sociétés.
typdoc
Journal articles
DOI
DOI : 10.53480/jeeses.bedc
Accès au bibtex
BibTex
titre
Description of five new species of Schellencandona Meisch, 1996 (Ostracoda: Candoninae) from the southern French Alps, a highly diversified area for groundwater ostracods
auteur
Colin Issartel, Pierre Marmonier
article
European Journal of Taxonomy, 2025, 1022, pp.85-133. ⟨10.5852/ejt.2025.1022.3083⟩
resume
We describe five new species of the genus Schellencandona Meisch, 1996 (Ostracoda, Candoninae) collected in the southern French Alps. Four of these species, S. danielopoli sp. nov., S. capderreyae sp. nov., S. mercantourensis sp. nov., and S. claretae sp. nov., are related to S. simililampadis (Danielopol, 1978), a species previously described from southern France. The fifth species, S. malardi sp. nov., is related to the species of Schellencandona present in the Northern Alps. These five new species were collected in the interstitial habitats of rivers, generally deep inside the bedsediment (i.e., at a depth of about 90 cm into the sediment), and show some morphological characteristics linked to a specialisation to live in groundwater (e.g., long aethetascs, large oocytes). Schellencandona danielopoli and S. claretae have a large geographic distribution and a wide altitudinal range. Schellencandona mercantourensis is present at high elevation in two different rivers. The last two species, S. capderreyae and S. malardi, occur at low-elevation sites in a single river. They can be considered vulnerable to future climatic changes in the Mediterranean region.
typdoc
Journal articles
DOI
DOI : 10.5852/ejt.2025.1022.3083
Accès au bibtex
BibTex
titre
Counting the Invisible: New Tools to Estimate the Number of Contributors From Sequence‐Based Microsatellite Genotyping of Environmental DNA Samples
auteur
Olivier Lepais, Ivan Paz‐vinas
article
Molecular Ecology Resources, 2025, ⟨10.1111/1755-0998.70051⟩
typdoc
Journal articles
DOI
DOI : 10.1111/1755-0998.70051
Accès au texte intégral et bibtex
https://hal.inrae.fr/hal-05300732/file/Molecular%20Ecology%20Resources%20-%202025%20-%20Lepais%20-%20Counting%20the%20Invisible%20%20New%20Tools%20to%20Estimate%20the%20Number%20of%20Contributors%20From.pdf BibTex
titre
Diversity of Niphargus (Crustacea, Amphipoda) in France, as revealed by DNA barcoding approach
auteur
Behare Rexhepi, Teo Delić, Gaj Kušar, François Lefebvre, Thierry Alezine, Xavier Chevillot, Marie-José Olivier, Florian Malard, Christophe Douady, Fabio Stoch, Jacques Chauvin, Aurélie Husté, Matthieu Fournier, Maja Zagmajster, Cene Fišer
article
Zoosystematics and Evolution, 2025, 101 (4), pp.1831-1844. ⟨10.3897/zse.101.153239⟩
resume
Niphargus is the most speciose amphipod genus inhabiting groundwater of the Western Palearctic. The genus is renowned for its notorious taxonomy, associated with large within- but often negligible between-species morphological variation. Results of molecular taxonomy suggested that morphological variation captured less than half of its species diversity, calling for a molecular revision of past taxonomic and faunistic works. Molecular assessment of species diversity within Niphargus has been conducted since the 2000s, but it remains spatially incomplete given the genus’ extensive geographic range. Here, we provide the first comprehensive assessment of the diversity of Niphargus in France using molecular markers. We sequenced the COI mitochondrial marker from 436 individuals collected from 234 locations. Using Assemble Species by Automated Partitioning, we identified 99 molecular operational taxonomic units (MOTU), among which 74 could represent potential new species. In turn, we selected one individual per MOTU, amplified nuclear markers 28S and Histone 3, aligned them with an additional 142 MOTUs from across the genus range, and reconstructed their phylogenetic relationships using the Maximum Likelihood method. We found that several nominal species occurring in France are polyphyletic. Furthermore, Niphargus from France comprised lineages derived from deep and terminal splits, some of which showed signs of evolutionary radiation. The phylogenetic relationships are consistent with the hypothesis that Niphargus originated in the western part of its range. This study addressed a knowledge gap in the molecular and spatial coverage of Niphargus , provided new barcodes for monitoring the diversity of the genus, and identified future directions for research.
typdoc
Journal articles
DOI
DOI : 10.3897/zse.101.153239
Accès au texte intégral et bibtex
https://hal.science/hal-05302593/file/ZSE_article_153239_en_1.pdf BibTex
titre
Metabolism is of minor importance for under-ice DIC dynamics in hardwater lakes
auteur
Björn Wissel, Deirdre Bateson, Lushani Nanayakkara, Zoraida J Quiñones-Rivera
article
Inland Waters, 2025, 15 (1), pp.2501579. ⟨10.1080/20442041.2025.2501579⟩
resume
Our knowledge of inland lakes is largely based on samples collected during the ice-free "growing" season, even though lakes in continental climates may be ice-covered for several months during winter. Studies that have characterized under-ice conditions were predominantly conducted in dilute boreal and temperate lakes, while information on hardwater lakes (>120 mg L-1 CaCO3) is still limited. Yet, hardwater lakes represent ∼50% of standing waters on earth, contain large quantities of dissolved organic and inorganic carbon (DOC, DIC) and are considered hotspots of carbon processing. Here, we present results from a 9-lake survey of Canadian hardwater lakes, conducted over 3 consecutive winters, with preceding summer conditions characterized to contrast seasonal differences. Despite their 10-fold differences in morphometry and water chemistry, hardwater lakes showed similar trajectories from fall to winter to spring: (1) physical freeze-out increased salinity and DOC; (2) metabolic activity controlled algal biomass, dissolved oxygen (DO), pH, and soluble reactive phosphorus (SRP); and (3) DIC dynamics were influenced predominantly by nonmetabolic factors such as hydrology (groundwater) and water chemistry (CaCO3 dissolution), relative to metabolic factors (aerobic/anaerobic respiration). While temporal patterns of chlorophyll a, DO, SRP, and pH were comparable to boreal and temperate lakes, DIC dynamics were starkly different. Hence, we propose that hardwater lakes should be considered separately, particularly pertaining to their role in the global carbon cycle.
typdoc
Journal articles
DOI
DOI : 10.1080/20442041.2025.2501579
Accès au texte intégral et bibtex
https://hal.science/hal-05324690/file/Wissel_et_al_winter_DIC_revised%20no%20track%20changes.pdf BibTex
titre
Morpho‐ecological restoration in braided rivers: the need to account for geomorphological heterogeneity
auteur
Lise Devreux, Barbara Belletti, Sylvain Dolédec, Pierre Marmonier, Margot Chapuis
article
River Research and Applications, 2025, ⟨10.1002/rra.70033⟩
resume
Braided rivers display a wide range of ecological conditions associated with their specific morphological and hydrological dynamics. Like other hydrosystems, braided rivers have been altered by human activities, which have led to a loss of their multi‐thread morphology, causing severe damage to their ecological functioning. River restoration has been a major research focus in the last three decades due to the Water Framework Directive recommendations to improve the ecological status of water bodies and encourage researchers to develop indicators for assessing ecological status. However, generic indicators developed to fulfill the WFD recommendations often underestimate the specificities of river types such as multi‐thread braided rivers. In this study, we adapted the current French sampling methodology for collecting benthic invertebrates for a braided alpine river by considering the diversity of macro‐, meso‐, and microhabitats within reaches. We applied this modified methodology to compare invertebrate assemblages (abundance, diversity, taxonomic and trait composition) in a braided alpine river, using one restored and one semi‐natural (i.e., target) reach. Five years after restoration, the target reach was more diversified in terms of macrohabitats (channel types) compared to the restored reach. This resulted in a higher taxa and trait diversity. These results give insights into the significance of channel type diversity in supporting benthic invertebrate assemblages in braided rivers and the need to adapt invertebrate sampling methodologies to consider their multi‐thread morphology.
typdoc
Journal articles
DOI
DOI : 10.1002/rra.70033
Accès au texte intégral et bibtex
https://hal.science/hal-05235451/file/RRA-24-0253_Proof_hi.pdf BibTex
titre
Caught in a bad romance: Microbiota increases glyphosate toxicity in the Asian tiger mosquito Aedes albopictus
auteur
Pierre Antonelli, Laurent Vallon, Edwige Martin, Séverine Balmand, Sylvie Guibert, Anne Baudouin, Laurent Simon, Aurélien Vigneron, Guillaume Minard, Claire Valiente Moro
article
Environmental Pollution, 2025, 381, pp.126651. ⟨10.1016/j.envpol.2025.126651⟩
typdoc
Journal articles
DOI
DOI : 10.1016/j.envpol.2025.126651
Accès au texte intégral et bibtex
https://hal.science/hal-05220925/file/2025_Antonelli_Env_Pollution.pdf BibTex
titre
No evidence for behavioral or physiological effects of nanoplastics ingestion in the fruit fly Drosophila melanogaster
auteur
Chloé M.C. Richard, David Renault, Clarisse Cadot, Hervé Colinet, Stéphane A.P. Derocles, Silvia Argelia Peraza Ku, Karine Salin, Mélanie Boël
article
Ecotoxicology and Environmental Safety, 2025, 303, pp.118811. ⟨10.1016/j.ecoenv.2025.118811⟩
resume
Plastic pollution increases worldwide, releasing small plastic particles into the environment, such as nanoplastics (NP) that affect living organisms. NP can penetrate biological membranes and interact with cellular components such as mitochondria. However, the effects of NP on terrestrial insects, the most diverse and abundant taxa, remains poorly studied compared to aquatic species. Our study assesses the effect of nanoplastics on the emergence rate, mitochondrial activity, metabolism, body mass, and locomotor activity in Drosophila melanogaster (Meigen, 1830, Diptera: Drosophilidae), a terrestrial insect. Three experimental groups were compared: a control group (C) with flies fed food without NP, a low contamination group (LOW) with flies fed food containing 1 mu g/g of NP of different sizes (20, 80 and 200 nm), and a high contamination group (HIGH) with flies fed food containing 500 mu g/g of NP of the same classes of sizes. Low and High groups were exposed to polystyrene NP for their entire development cycle. NP ingestion did not affect the number of pupae and adults, emergence rate, mitochondrial activity, metabolism and body mass. The locomotor activity of the flies was also unaffected by ingestion of NP. These results, compared with those reported in the literature, showed that the effect of nano-plastics on living organisms might depend on the species and polymer nature. The absence of detectable effects on flies is positive for the ecology of the species, constantly exposed to plastic pollution. Further studies in this area are still needed to fully determine the effects of NP on Drosophila biology and behavior.
typdoc
Journal articles
DOI
DOI : 10.1016/j.ecoenv.2025.118811
Accès au texte intégral et bibtex
https://hal.univ-brest.fr/hal-05219689/file/1-s2.0-S014765132501156X-main.pdf BibTex
titre
When size matters: energy allocation and thermogenic mechanisms in very small mammals, African pygmy mice
auteur
Mélanie Boël, Léa Herpe, Claude Duchamp, Caroline Romestaing, François-Xavier Dechaume-Moncharmont, Loïc Teulier, Frédéric Veyrunes, Damien Roussel, Nicolas Pichaud, Yann Voituron
article
Journal of Experimental Biology, 2025, 228 (16), pp.jeb250373. ⟨10.1242/jeb.250373⟩
resume
Thermoregulation is a major challenge for extremely small mammals such as the African pygmy mice Mus mattheyi and Mus minutoides, weighing less than 12 g. A previous study showed that these tiny mice exhibit different mitochondrial energy efficiency for ATP synthesis, with a higher efficiency in M. mattheyi (∼6 g) than in M. minutoides (∼10 g). This result suggests a lower mitochondrial heat production at rest in M. mattheyi, despite its lower body surface and inevitably greater heat loss from its body surface, than in M. minutoides. Consequently, a compensatory thermoregulatory strategy should exist in M. mattheyi to maintain homeothermy. The present study aimed to assess whether M. mattheyi uses non-shivering thermogenesis in brown adipose tissue (BAT) and/or activity-thermoregulatory heat substitution. For this purpose, multidisciplinary approaches involving behavioral, physiological, biochemical and molecular analyses were used. Mus mattheyi showed higher daily mass-specific energy expenditure and food intake per unit mass and allocated more daily energy to vital function, spent less time moving in their cage during the daytime but exhibited higher non-locomotor activity and higher movement-related energy cost compared with M. minutoides. BAT of M. mattheyi was metabolically more active, exhibiting higher mitochondrial respiration rates and citrate synthase activity than in M. minutoides, but lower uncoupling protein 1 content. Altogether, these results suggest that the tiny M. mattheyi mainly uses non-exercise activity thermogenesis, increased cost of movement and, to a lesser extent, BAT non-shivering thermogenesis for remaining warm.
typdoc
Journal articles
DOI
DOI : 10.1242/jeb.250373
Accès au texte intégral et bibtex
https://hal.science/hal-05222550/file/Bo%C3%ABl%20-%202025%20-%20When%20size%20matters%20energy%20allocation%20and%20thermogenic%20mechanisms%20in%20very%20small%20mammals%2C%20African%20pygmy%20mice%20_%20Thermor%C3%A9gulation%20Africain%20pygmy%20mice.pdf BibTex
titre
Relative Effects of Eutrophication and Warming on Freshwater Ecosystems Across Ecological Levels
auteur
Valentin Marin, Fanny Colas, Stéphanie Boulêtreau, Julien Cucherousset
article
Global Change Biology, 2025, 31 (8), ⟨10.1111/gcb.70410⟩
resume
Global change strongly alters biodiversity worldwide, but our ability to predict their consequences for ecosystem functioning remains limited. This lack of knowledge may be attributed to the limited empirical evidence of the simultaneous ecological impacts of global change across multiple ecological levels. Here, we conducted a full factorial experiment to measure the isolated and combined effects of two global change drivers to which freshwater ecosystems are severely exposed: (i) nutrient addition, which mainly affects the lower trophic levels and modifies ecosystems from the bottom of the food chain, and (ii) warming, which primarily affects large organisms at the top of the food chain. We quantified the effects of the two global change drivers at four different ecological levels: community composition (zooplankton and benthic invertebrates), size structure, trophic architecture, and ecosystem functioning. We found that the impacts of treatments varied significantly across different ecological levels. Specifically, community composition was predominantly affected by warming, whereas nutrient addition played a more important role than warming in ecosystem functioning (e.g., primary production and atmospheric CO 2 uptake). More importantly, we found that food webs (described using size spectrum and stable isotope structure) represent an integrative ecological level for capturing the effects of the two global change drivers tested, integrating changes in both community structure and ecosystem functioning. These results provide valuable insights into the responses of aquatic ecosystems to global change and reveal the importance of considering multiple ecological levels to improve our understanding of the processes driving the responses of ecosystems to global change.
typdoc
Journal articles
DOI
DOI : 10.1111/gcb.70410
Accès au texte intégral et bibtex
https://hal.inrae.fr/hal-05240218/file/Global%20Change%20Biology%20-%202025%20-%20Marin%20-%20Relative%20Effects%20of%20Eutrophication%20and%20Warming%20on%20Freshwater%20Ecosystems%20Across.pdf BibTex
titre
Effect of Time of Temperature Exposure on Routine Metabolic Rate and Body Mass Scaling in Alpine Charr ( Salvelinus umbla )
auteur
Allan Raffard, Martin Daufresne, Jean Guillard, François‐raphaël Lubin, Emilie Réalis‐doyelle, Hervé Rogissart, Loïc Teulier
article
Ecology and Evolution, 2025, 15 (8), pp.e71907. ⟨10.1002/ece3.71907⟩
resume
The thermal dependence of metabolism has attracted much attention because metabolism is linked to many ecological properties, from individuals to ecosystems. The rate at which physiological traits change is an important factor to account for when assessing thermal plasticity since the time of exposure might allow organisms to compensate for the effect of temperature on performance. Here, we studied short‐ and long‐term thermal plasticity of metabolic rate and its scaling with body mass of Alpine charr ( Salvelinus umbla ). To do so, we raised juveniles from Lake Geneva at 4.5°C and 8.5°C, measured their routine metabolic rate at their incubation temperature (long exposure, > 6 months), and individuals raised at 4.5°C were also tested at 8.5°C (short exposure, < 24 h). The metabolic rate of Alpine charr increased with temperature, as theoretically expected. We found no effects of duration of exposure on metabolic rate or its scaling with body mass. Despite a long‐term exposure to higher temperature, individuals did not adjust their metabolic rate as compared to individuals exposed to a rapid increase in temperature, questioning the capacity of Alpine charr to compensate for temperature increase through their metabolic rate. Therefore, our data reveal no compensation mechanisms of Alpine charr to counterbalance the acute effect of temperature. Further studies will be required to fully understand the adaptive potential of Alpine charr in the context of global change.
typdoc
Journal articles
DOI
DOI : 10.1002/ece3.71907
Accès au texte intégral et bibtex
https://hal.inrae.fr/hal-05508577/file/2025_Raffard_Ecol_Evol.pdf BibTex
titre
All‐in‐one, versatile and low‐cost experimental set‐up to implement environmental stochasticity in mesocosms ( PiStoch )
auteur
Chloé Souques, Jérémy Bacon, Ludovic Guillard, Pauline Eymard-Dauphin, Loïc Teulier, François‐xavier Dechaume-Moncharmont, Anne‐kristel Bittebiere, Yann Voituron
article
Methods in Ecology and Evolution, 2025, 16, pp.1955-1965. ⟨10.1111/2041-210X.70094⟩
resume
Abstract Environmental stochasticity in abiotic factors is inherent to ecosystems and is exacerbated by global change. However, experimental protocols typically cancel this factor by using cyclic or constant conditions, limiting the study of environmental variations. This simplification highlights the need for better methodological tools to control fluctuating environmental variables. We present here a guidance and solution for generating and implementing stochastic environmental conditions through our Raspberry Pi System for environmental Stoch asticity (PiStoch). This low‐cost, low‐tech and scalable method for mesocosm experiments also has the potential to replicate any other form of variability, including cyclic patterns. This system successfully reproduced stochastic time series in temperature and oxygen manipulation experiments. Testing with two biological case studies (macrophyte biomass and freshwater fish oxygen consumption), it demonstrated that thermal stochasticity had stronger effects than mean temperature, highlighting the importance of studying fluctuating conditions. Developing accessible methods to study organismal responses to environmental stochasticity is essential for improving the realism of laboratory experiments and enhancing the accuracy of physiological and ecological predictions.
typdoc
Journal articles
DOI
DOI : 10.1111/2041-210X.70094
Accès au bibtex
BibTex
titre
Greenhouse gas dynamics in fishponds: management versus environmental controls in a complex aqua-agriculture system, France
auteur
Emma Mari, Fanny Colas, Sylvain Dolédec, Anas M. Usoof, Jules Blanc, Björn Wissel
article
Journal of Environmental Management, 2025, 390, pp.126357. ⟨10.1016/j.jenvman.2025.126357⟩
resume
Fishponds are hotspots for carbon sequestration, processing, and emissions. However, the environmental drivers of greenhouse gas (GHG) fluxes in these ecosystems remain poorly understood. This study investigates how management practices influence GHG dynamics during the wet phase. We hypothesize that management alters water and sediment characteristics, thereby affecting GHG dynamics. In summer 2023, we measured CO2 and CH4 concentrations, along with water and sediment characteristics, in 38 ponds in La Dombes (France) in response to fertilization, feeding, liming and drying. GHG concentrations varied widely (CO2: 0.99–275.6 μmol L− 1, CH4: 0.20–32.45 μmol L− 1) and fluxes ranged from − 10.1-148.4 mmol m2⋅d− 1 for CO2 and from 0.1 to 20.1 mmol m2⋅d− 1 for CH4. Fish-farming practices primarily influenced sediment-rather than water-properties. CO2 concentrations were negatively related to dissolved oxygen and pH, positively influenced by feeding, which together explained 75 % of variability. CH4 dynamics appeared more complex, likely due to shallow depths, ebullition, and local environmental heterogeneity. This study highlights the strong variability in GHG emissions among ponds, partly mediated by fish-farming practices, and provides insights into their environmental drivers. Further research, including seasonal monitoring and experimental approaches, is needed to identify key management-related factors to help mitigate the climate impact of fish-farming.
typdoc
Journal articles
DOI
DOI : 10.1016/j.jenvman.2025.126357
Accès au bibtex
BibTex
titre
Tire road wear particles, microplastics and metals in sediment of stormwater detention basins: co-occurrence and ecological risk assessment
auteur
Zoé Iannuzzi, M. Carmen Casado-Martinez, Tiago De Oliveira, David Lebouil, Benoît J.D. Ferrari, Johnny Gasperi, Brice Mourier
article
Environment International, 2025, 202, pp.109676. ⟨10.1016/j.envint.2025.109676⟩
resume
Tire road wear particles (TRWP) and microplastics (MP) are increasingly present in the environment due to anthropogenic sources like industrial activities and road traffic. Their load is high in urban sediments and more specifically in stormwater management infrastructure such as detention basins. Eleven detention basins featured by contrasting land uses (industrial, urban, agricultural, and heterogeneous) were sampled in a French metropolitan city to examine how land use influences the presence of TRWP, MP, and metals in these basins. Results show that the concentration of TRWP is higher than MP in all samples, with the highest levels in industrial areas reaching 20,191 mg.kg− 1 and 3,266 mg.kg− 1, respectively. A positive and significant correlation is observed between urban related metals (Cd, Cu, Pb, Zn), TRWP and MP. The enrichment factor and pollution load index are used to classify the contamination of the basins and showed that all the basins are contaminated. Concerning the risk associated, a risk quotient is calculated for the three pollutants. A predicted non-effect concentration for sediments (PNECsediment) is proposed for TRWP specifically developed in this study using available effect data from the literature, which is set at 1,000 mg⋅kg− 1. Two methods (polymeric risk index, risk score) are tested to consider the complexity of MP in the risk assessment, they are discussed in this study. The two methods show different results, highlighting the importance of considering the characteristics of MP in risk assessment.
typdoc
Journal articles
DOI
DOI : 10.1016/j.envint.2025.109676
Accès au texte intégral et bibtex
https://univ-eiffel.hal.science/hal-05171698/file/1-s2.0-S0160412025004271-main.pdf BibTex
titre
Differential responses of rural and urban populations to artificial light at night in the Spiny toad
auteur
Jean Secondi, Luca Périsse, Thierry Lengagne, Nathalie Mondy
article
Behavioral Ecology, 2025, 36 (4), ⟨10.1093/beheco/araf051⟩
resume
Abstract The ongoing expansion of urban areas and increased use of electric lighting has led to the surge of artificial light at night (ALAN) worldwide. ALAN alters the physiology and behavior of animals and is considered as a threat to biodiversity. Nevertheless, many species have colonized the urban environment. For these, urban individuals may have become less sensitive to ALAN than individuals from rural environments. We tested this hypothesis in rural and urban spiny toads Bufo spinosus in western France. Individuals housed in outdoor mesocosms were exposed to 0.5 lx or to the dark at night throughout the experiment. We measured their behavioral responses to ALAN exposure (movement and use of space in arenas) in three experiments measuring their general activity, sensitivity to glare and propensity to cross a light strip. We also measured pupillary light reflex and change in body condition. ALAN-exposed individuals were less disturbed by light than controls while urban toads were less sensitive to light during the tests than rural toads. Urban toads exposed to ALAN also had a lower gain in body condition than controls while the gain was similar in both groups of rural toads. Origin and treatment did not influence the pupillary light response. Overall, the larger influence of origin on toad’s response may arise from broader behavioral differences making urban individuals generally more tolerant to stressful conditions at the behavioral level. However, our results show that higher tolerance to nocturnal light in urban toads may increase their exposure and induce physiological costs.
typdoc
Journal articles
DOI
DOI : 10.1093/beheco/araf051
Accès au bibtex
BibTex
titre
The early Oligocene Caniformia (Carnivora, Mammalia) from the standard level MP23 in the ‘Phosphorites du Quercy’, Occitanie, southwestern France
auteur
Louis de Bonis, Axelle Gardin, Gilles Escarguel
article
Geobios, 2025, ⟨10.1016/j.geobios.2025.07.001⟩
resume
This article describes Caniformia carnivorans newly found in southwestern France fossiliferous localities called 'Phosphorites du Quercy' and dated to the MP biochronological scale standard level MP23 (reference locality: Itardies, 30.56 ± 0.18 Ma; early Oligocene). In Europe, the Eocene-Oligocene transition is marked by a significant paleobiological turnover known as Stehlin's 'Grande Coupure', representing a major shift in the evolutionary history of Caniformia. Before the 'Grande Coupure', a nearly singular, small and primitive Amphicyonidae was present in the late Eocene of Europe, while a wide diversity of taxa and morphologies emerged by the early Oligocene. When compared to the material from the 19th century 'Old Collections from the Quercy', the well-dated new material provides biochronological information to species first described without any time constraint, thus precising their position in the evolutionary process. We describe the most primitive musteloid taxon ever found in Europe. Other Caniformia taxa show ecological niches absolutely unknown in extant faunas, with horizontal wear facets in the check teeth. The most abundant taxon shows adaptations to climbing; the high diversity of small carnivores and glirid rodents supports the hypothesis of an at least partially forested environment. The high number of individuals including juveniles of species of amphicynodontids favours the hypothesis of individuals buried in their den and suggests a potential gregarious behaviour.
typdoc
Journal articles
DOI
DOI : 10.1016/j.geobios.2025.07.001
Accès au texte intégral et bibtex
https://hal.science/hal-05220646/file/1-s2.0-S0016699525000658-main.pdf BibTex
titre
Genetic tracing reveals the role of ornamental plant trade in the simultaneous spread of three invasive ant species in Western Europe
auteur
Giovanny Destour, Bernard Kaufmann, Julia Centanni, Zaynab Abdelli, Claudie Doums, Adeline Dumet, Jérôme Gippet, Luc Gomel, Annick Lucas, Hugo Tauru, Alan Vergnes, Rumsaïs Blatrix, Marion Javal
article
Peer Community Journal, 2025, 5, pp.e67. ⟨10.24072/pcjournal.577⟩
resume
Understanding how human activities trigger biological invasions is crucial to prevent the environmental and socioeconomic costs of invasive species. The Tapinoma nigerrimun complex comprises four species of ants, three of which (T. darioi, T. ibericum, T. magnum) exhibit biological and ecological characteristics of invasive ant species. These three species are native to Western Mediterranean Europe and North Africa, but have been reported as invasive in northern Europe. The ornamental plant trade is a common invasion pathway for many taxa, but its role in the continental spread of invasive Tapinoma species remains unknown. This study aims to identify the role of Ornamental Plant Sales Outlets (OPSOs) in the introduction of these three species and to determine the potential geographical origin of populations present in French OPSOs. Tapinoma colonies were sampled in 103 OPSOs across four French urban areas and one Corsican locality, with a specific focus on the Mediterranean region. Collected ant workers were identified to the species level using 15 microsatellite markers. Genotypes were compared to genetic profiles of European and North African populations to trace the geographical origin of introduced populations. We found a high prevalence of invasive species in OPSOs, with 66% (16/24) of invaded OPSOs in the urban area of Montpellier and 31% (19/61) in the urban area of Lyon, suggesting an important role of OPSOs in the introduction of the three species. Multiple introductions were detected in Montpellier OPSOs, both at species level (seven OPSOs with two or three invasive species) and between genetic clusters within species (five OPSOs with more than one genetic cluster for T. magnum). Based on genetic clustering, populations with probable origins in Spain or Italy were detected in the French OPSOs. These results are particularly worrying as multiple simultaneous introductions might promote a rapid genetic recovery from founder effects for one species or result in hybridization between species. Overall, our findings highlight the importance of the trade in ornamental plants in shaping insect invasions and increasing the risk of genetic mixing with unforeseeable consequences on species invasiveness.
typdoc
Journal articles
DOI
DOI : 10.24072/pcjournal.577
Accès au texte intégral et bibtex
https://hal.science/hal-04617939/file/10_24072_pcjournal_577.pdf BibTex
titre
Persistent organic pollutants in food systems: A comparative study across four contrasting socio-ecosystems: Portugal, Senegal, French Guiana, and Guadeloupe
auteur
Nathalie El Deghel, Michael Rapinski, Priscilla Duboz, Richard Raymond, Damien Davy, Nuno Durães, André-Marie Dendievel, Eduardo Ferreira da Silva, Pascal Jean Lopez, Vincent Vaccher, Anaïs Vénisseau, Julie Anne Nazare, Anne-Laure Badin, Jean-Philippe Bedell
article
Food Chemistry, 2025, 493 (2), pp.145766. ⟨10.1016/j.foodchem.2025.145766⟩
resume
This study quantifies persistent organic pollutants (POPs) in food across four territories undergoing dietary transitions: French Guiana, Guadeloupe, Senegal, and Portugal. A total of 200 local and imported food samples from 12 categories were analyzed for polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs). Concentrations varied by food matrix, region, and origin. The highest PCDD levels were found in butter from Senegal (16.64 pg/g), and the highest PCDFs in leafy vegetables from Portugal (2.4 pg/g). Fish category showed the highest levels of dioxin-like PCBs (600.7 pg/g) and non-dioxin-like PCBs (3.6 ng/g). All values complied with EU Regulation 2023/915. To estimate dietary exposure, the maximum allowable daily intake (g of food/day) was calculated using Toxic Equivalents (TEQ), EFSA’s tolerable weekly intake (TWI: 2 pg TEQ/kg bw/week), and compared to national food consumption data. In Portugal, exposure from fish exceeded the TWI, highlighting the influence of regional contamination sources and dietary habits.
typdoc
Journal articles
DOI
DOI : 10.1016/j.foodchem.2025.145766
Accès au texte intégral et bibtex
https://hal.science/hal-05197539/file/El%20Deghel.pdf BibTex
titre
Microplastics storage at the sediment-water interface in a gravel-bed river: Importance of local hydro-sedimentary conditions in downwelling, upwelling, and sedimentation zones
auteur
Mohammad Wazne, Laurent Simon, Stefan Krause, Manon Vallier, André-Marie Dendievel, Camille M Touchet, Brice Mourier, Gilles Montagnac, Florian Mermillod-Blondin
article
Water Research, 2025, 279, pp.123433. ⟨10.1016/j.watres.2025.123433⟩
resume
Rivers are often seen as vectors for microplastic transport from land to the ocean; however, the sediment-water interface of rivers also provides opportunity for the temporary storage and retention of plastic debris. Hydrological, sedimentary, physical, chemical and biological factors influence microplastic fate and transport, yet the influence of the interactions between these different drivers and mechanisms on microplastic transport at the sediment-water interface remains poorly understood. This study investigates how hydrological exchanges impact microplastics distribution in streambed sediments by comparing microplastic concentrations in zones with surface-groundwater exchange fluxes (upwelling or downwelling) and zones with sediment accumulation along gravel bars situated in the lower catchment of the Ain River (France). Sediment samples were collected from 15 locations (five per hydro-sedimentary condition) at two different depths (i.e., sediment surface and -20 cm), and microplastics between 20 and 500 µm in size were analyzed. Our results indicate that hydrological flow conditions significantly control microplastic concentrations in streambed sediments. In the top sediment layer, microplastic concentrations in sediment size fraction smaller than 2 mm were similar across hydrological zones. However, upwelling zones showed significantly higher concentrations at 20 cm depth in comparison to downwelling zones, likely due to an abundance of smaller microplastics in upwelling zones (mean particle size of microplastics =251 ±154 µm, median particle size=179 µm). This suggests that water exchanges influence particle retention in upwelling zones. Additionally, sedimentation zones exhibited much higher microplastic concentrations than upwelling and downwelling zones, possibly due to accumulation with fine sediments (D50 =221 µm). These insights emphasize the importance of sedimentological and hydrological conditions in shaping microplastic distribution and sampling. It also highlights that sediment load of gravel bed rivers can serve as potential reservoirs for sub-pore size microplastics which pose risks to interstitial fauna, groundwater quality, and aquatic food webs.
typdoc
Journal articles
DOI
DOI : 10.1016/j.watres.2025.123433
Accès au texte intégral et bibtex
https://hal.science/hal-05109751/file/Wazne_Manuscript.pdf BibTex
titre
Determinism of anatoxin-a production in Phormidium-dominated biofilms of a regulated river (Ain, France)
auteur
Charlotte Robichon, Delphine Latour, Fanny Perrière, Sylvain Dolédec, Joël Robin
article
Harmful Algae, 2025, 148, pp.102912. ⟨10.1016/j.hal.2025.102912⟩
resume
Benthic cyanobacteria have been increasingly held responsible for bird and mammal deaths along riverbanks in the last decades. However, little is known about the environmental conditions that favor their development, spatiotemporal dynamics and associated toxins. In the summer of 2020, we monitored physical, chemical and biological variables, quantified benthic cyanobacteria and measured anatoxin-a concentration in the biofilms of four reaches of the dam-regulated Ain River, France. The main potential anatoxin producer was Phormidium, often associated with Oscillatoria mats in the same field campaigns. Anatoxin-a detectable concentrations ranged from 0.5 to 197µg/g of dry weight showing a high spatial heterogeneity. According to structural equation modelling, anatoxin-a concentrations increased with water depth in a range of 20 to 80 cm. In contrast, the chlorophyta biovolume and the flow velocity were the main factors negatively correlated with anatoxin-a concentrations. Although flow velocity did not limit the biovolume of potential anatoxin producers, it could induce stress to the cyanobacterial mats within the river, causing a limitation of anatoxin-a concentrations. Finally, the effects of these drivers on anatoxin-a production demonstrated a high variability over the summer. This high temporal variability of both benthic cyanobacteria biomass and anatoxin-a concentration makes risk assessment relatively challenging.
typdoc
Journal articles
DOI
DOI : 10.1016/j.hal.2025.102912
Accès au bibtex
BibTex
titre
Evaluation of the impact of agricultural spreading of organic waste products (OWP) with the earthworm Eisenia fetida
auteur
Jean-Philippe Bedell, Olivier Roques, Laure Wiest, Rémy Bayard
article
TSM. Techniques Sciences Méthodes – Génie urbain, génie rural, 2025, TSM 6 2025, pp.51-67. ⟨10.36904/tsm/20250651⟩
resume
Dans le cadre du projet Perséphone, nous avons travaillé sur la caractérisation de produits résiduaires organiques (PRO) et la mesure d’effets lors de l’épandage de ces produits sur les plantes et les vers de terre. Ce travail a permis de fournir des informations sur la biodisponibilité des polluants présents dans les amendements, sur l’écotoxicité pour les organismes et le transfert vers les organismes cibles des polluants : boues d’épuration de la station d’épuration de Bellecombe, lisiers et fumiers du même secteur. Dans cet article, les bioessais utilisant le ver de terre modèle, Eisenia fetida, sont présentés. Les résultats ont montré que tous les vers de terre sont morts à des niveaux supérieurs à 160 g.kg-1 MS de boues d'épuration, 80 g.kg-1 MS de fumier de vache et 60 g.kg-1 MS de lisier de vache après 14 jours d'exposition à ces seules matrices PRO. La présence de boues d'épuration et de fumier de vache n'a pas entraîné de comportement d'évitement chez les vers de terre, voire un comportement d'attraction significatif a même été observé au-dessus de 10 g.kg-1 de fumier de vache et de 20 g.kg-1 de boues d'épuration. L'exposition au lisier de vache a montré une légère réaction d'évitement de 25,00 (± 33,17%) et 27,50 (± 37,75%) à 5 et 10 g.kg-1 MS respectivement. Les résultats du test écotoxicologique chronique (temps long de 56 jours) montrent qu‘il existe un effet sur la reproduction des vers de terre (avec 70 % d’inhibition pour la boue et le lisier de vache à 20 g.kg1 MS d’amendement unique). Enfin, au niveau du transfert des polluants, voire de leur bioaccumulation, on a démontré une bioaccumulation du cuivre dans les vers de terre exposés à la boue et un transfert potentiel possible de résidus médicamenteux, même si globalement il n’y a pas ou peu de bioaccumulation de ces résidus dans Eisenia fetida.
typdoc
Journal articles
DOI
DOI : 10.36904/tsm/20250651
Accès au bibtex
BibTex
titre
Small Water Impoundments Have Local and Longitudinal Impacts on Carbon Cycling Along a River Network
auteur
Teresa Silverthorn, Vincent Chanudet, Fanny Colas, Romain Sarremejane, Abdelkader Azougui, Thibault Datry
article
River Research and Applications, 2025, 41 (8), pp.1630-1642. ⟨10.1002/rra.70002⟩
resume
Damming may be one of the most significant anthropogenic modifications fragmenting river networks. Damming alters the transport and processing of coarse particulate organic matter (OM), hence influencing carbon (C) cycling, including the production and emission of carbon dioxide (CO 2 ) and methane (CH 4 ). Most studies assessing the impact of dams tend to focus on large impoundments, although small impoundments (< 15 m high) are likely to have notable local‐ and river continuum‐scale effects by fragmenting the river network. We aimed to determine if and how small impoundments affect OM stocks, leaf litter decomposition, and gaseous C emissions to the atmosphere. We monitored 21 sites across an impounded river network in central France over three seasons. We measured in situ diffusive CO 2 and CH 4 fluxes, as well as leaf litter decomposition rates, OM stocks, and OM transport. Two small impoundments and the river reaches immediately upstream and downstream had varying patterns of C emissions, with CO 2 and CH 4 fluxes highest immediately downstream of one impoundment and high seasonal variability in fluxes at the other impoundment. Small impoundments impacted the expected river continuum pattern of OM stocks, but not leaf litter decomposition nor CO 2 emissions. In sum, small impoundments can have contrasting local impacts and combined river continuum‐scale effects on C cycling. Our study highlights the importance of considering both the local‐ and river continuum‐scales when examining river C dynamics and how they are influenced by anthropogenic impacts.
typdoc
Journal articles
DOI
DOI : 10.1002/rra.70002
Accès au texte intégral et bibtex
https://hal.science/hal-05184958/file/rra.70002.pdf BibTex
titre
Ecological interactions and genomic innovation fueled the evolution of ray-finned fish endothermy
auteur
Fernando Melendez-Vazquez, Alexander Lucaci, Avery Selberg, Julien Clavel, Melissa Rincon-Sandoval, Aintzane Santaquiteria, William White, Danielle Drabeck, Giorgio Carnevale, Emanuell Duarte-Ribeiro, Masaki Miya, Mark Westneat, Carole Baldwin, Lily Hughes, Guillermo Ortí, Sergei Kosakovsky Pond, Ricardo Betancur-R, Dahiana Arcila
article
Science Advances , 2025, 11 (26), ⟨10.1126/sciadv.ads8488⟩
resume
Endothermy has independently evolved in several vertebrate lineages but remains rare among fishes. Using an integrated approach combining phylogenomic and ecomorphological data for 1051 ray-finned fishes, a time-dependent evolutionary model, and comparative genomic analyses of 205 marine vertebrates, we show that ecological interactions with modern cetaceans coincided with the evolution of endothermy in ray-finned fishes during the Eocene-Miocene. This result is supported by evidence of temporal and geographical overlap between cetaceans and endothermic fish lineages in the fossil record, as well as correlations between cetacean diversification and the origin of endothermy in fishes. Phylogenetic comparative analyses identified correlations between endothermy, large body sizes, and specialized swimming modes while challenging diet specialization and depth range expansion hypotheses. Comparative genomic analyses identified several genes under selection in endothermic lineages, including carnmt1 (involved in fatty acid metabolism) and dcaf6 (associated with development). Our findings advance the understanding of how ecological interactions and genomic factors shape key adaptations.
typdoc
Journal articles
DOI
DOI : 10.1126/sciadv.ads8488
Accès au texte intégral et bibtex
https://hal.science/hal-05151179/file/Melendez-Vazquez%202025.pdf BibTex
titre
New Insights Into the Composition, Distribution and History of the Freshwater Isopod Species Complex Proasellus coxalis (Dollfus, 1892) in Europe and the Mediterranean Basin
auteur
Nathanaelle Saclier, Fabio Stoch, David Eme, Colin Issartel, Lara Konecny-Dupré, Christophe Douady, Florian Malard
article
Freshwater Biology, 2025, 70e70062 (6), ⟨10.1111/fwb.70062⟩
resume
ABSTRACT Problematic taxa, often referred to as species complexes, are common among freshwater organisms. Understanding their species composition, distribution and history is key to integrating these taxa into many ecological disciplines. We investigated the taxonomy and biogeography of the Proasellus coxalis species complex (PCC), a diversified and functionally important group of asellid isopods (Pancrustacea) in freshwaters of the Mediterranean Basin and central Europe. We used phylogenetic and phylogeographic analyses from specimens collected at 143 localities across the range of the PCC to document its diversity, phylogenetic position and historical biogeography. First, we used molecular species delimitation methods based on the mitochondrial cytochrome oxidase subunit I (COI) gene to identify molecular operational taxonomic units (MOTUs) representing putative species within that complex. Second, we used three additional genes—the 16S mitochondrial rDNA, FASTKD4 nuclear and 28S nuclear rDNA genes—to generate a four‐gene dated phylogeny of Asellidae to test the monophyly and phylogenetic position of the PCC. Third, we applied statistical ancestral reconstruction methods to the four‐gene dated phylogeny of the PCC to infer its biogeographic history. Fourth, we used Bayesian phylogeographic diffusion models based on the COI and 16S genes to reconstruct the range dynamics of the only widely distributed MOTU in this species complex. We identified ≥ 25 MOTUs within the PCC. The eastern Mediterranean Basin, including the Pontic‐Mediterranean and Italian peninsulas, contained numerous narrowly distributed MOTUs. In contrast, central Europe, northern Italy, the Dinarides, the Iberian peninsula and northwestern Africa were colonised by a single MOTU, which we term P. banyulensis . The four‐gene phylogeny of the Asellidae clustered all PCC MOTUs into a well‐supported monophyletic group, which we term the P. coxalis clade. Ancestral reconstruction methods indicated that the clade originated during the early Miocene in the southern Hellenides, at that time part of the Balkanian‐Anatolian landmass. From there, it dispersed and diverged mainly during the Miocene, through the eastern Mediterranean Basin, including the Italian peninsula. Bayesian phylogeographic diffusion models revealed that central Europe and the western Mediterranean Basin were recently colonised from Italian populations of P. banyulensis . During the Pleistocene, multiple waves of colonisation of that species followed each other from central Italy, the most northerly (Germany, Sweden) and southerly (southern Spain, Morocco and Algeria) regions being colonised last. We resolved major taxonomic, phylogenetic and biogeographic uncertainties that have marked more than a century of research on the PCC. Our updated understanding of this complex is that of a species‐rich clade that has long diversified in the eastern Mediterranean Basin, but of which a single species— P. banyulensis —has recently colonised central Europe and the western Mediterranean Basin from Italian refugia. In central Europe, this species adds to two other widespread species— Asellus aquaticus from Pannonian refugia and P. meridianus , most probably from Iberian refugia—to produce mixed asellid communities.
typdoc
Journal articles
DOI
DOI : 10.1111/fwb.70062
Accès au bibtex
BibTex
titre
Transcriptomic basis of within- and trans-generational predator-induced plasticity in the freshwater snail Physa acuta
auteur
Léo Dejeux, Nathanaëlle Saclier, Juliette Tariel-Adam, Maxime Hoareau, Tristan Lefébure, Lara Konecny, Sandrine Plénet, Emilien Luquet
article
Heredity, 2025, 134 (7), pp.439-449. ⟨10.1038/s41437-025-00775-9⟩
resume
Inducible defences in response to predation risk are a well-known example of adaptive phenotypic plasticity. Although inducible defences have been studied mainly within a generation (within-generational plasticity), there is now clear evidence that ancestral exposure to predation risk can in uence the defences expressed by offspring, even if they have not been exposed themselves (transgenerational plasticity). The molecular mechanisms allowing the transmission of environmental information across generations are not well understood. In this study, we combined measures of antipredator responses (behavioural and morphological) with transcriptomic investigations across two generations in the freshwater snail Physa acuta. We hypothesised that both within- and transgenerational plasticity would induce phenotypic changes associated with differential gene expression. Our results con rmed within- and transgenerational plasticity: F1 snails respond to predator-cue exposure by increasing escape behaviour, reducing shell length, and developing thicker and slenderer shells, whereas F2 snails from exposed parents have longer and thicker shells with narrower apertures. Within- and transgenerational plasticity were accompanied by the differential expression of 112 genes (101 up- and 11 downregulated) and 23 differentially expressed genes (17 up- and 6 downregulated), respectively. Within- and transgenerational plasticity did not share common differentially expressed genes, but the associated molecular functions, involving metabolism and transcription regulation, were similar. These results suggest that predator-induced within-generational plasticity and transgenerational plasticity may result from different genomic pathways and may evolve independently.
typdoc
Journal articles
DOI
DOI : 10.1038/s41437-025-00775-9
Accès au texte intégral et bibtex
https://hal.science/hal-05149970/file/Dejeux%20et%20al.%202025.Preprint.pdf BibTex
titre
Biogeography after Permian/Triassic boundary crisis resulted from a complex combination of functional and dispersal mechanisms.
auteur
Pauline Guenser, Marc Leu, Néo Nicollet, Axelle Zacaï, Arnaud Brayard, Nicolas Goudemand, Gilles Escarguel
article
Lethaia, 2025, 58 (3), pp.1-24. ⟨10.18261/let.58.3.2⟩
resume
The Permian/Triassic boundary (PTB) crisis represents one of the most severe mass extinction events, resulting in the extinction of over 80% of marine species. The subsequent biotic recovery during the Early Triassic was characterized by alternating phases of high and low taxonomic richness. This study investigates the macroecological processes that shaped biogeographical patterns during this recovery period by examining two marine nektonic groups: conodonts and ammonoids. Using an extensive database of species occurrences and advanced multivariate and network analyses, we identified distinct biogeographical units (biochores) and evaluated the relative influence of niche and dispersal processes on these patterns. Our results reveal that biogeographical structures evolved from longitudinal differentiation during the Griesbachian to latitudinal differentiation by the Spathian. Conodont biogeography was primarily influenced by functional constraints in the Griesbachian and by a combination of niche and dispersal constraints from the Dienerian to Spathian. In contrast, ammonoid biogeography was primarily dispersal-constrained during the Griesbachian and Spathian, and niche-constrained during the Smithian. This study highlights the importance of integrating macroecological theories to understand recovery dynamics of marine ecosystems after mass extinction events. Our findings suggest a complex interplay of biotic (ecological) and abiotic factors in driving the distribution of biodiversity after the PTB crisis. Conodonts and ammonoids were not driven by the same constraints and it may be due to a difference of sensitivity to abiotic parameters and environmental disturbances. By extending these methodologies to other taxonomic groups and other crises, future research may offer critical insights into the drivers of biodiversity’s distribution after a mass extinction.
typdoc
Journal articles
DOI
DOI : 10.18261/let.58.3.2
Accès au texte intégral et bibtex
https://ube.hal.science/hal-05308559/file/2025_Guenser_Lethaia.pdf BibTex
titre
Snowmelt and laying date impact the parental care strategy of a high-Arctic shorebird
auteur
Léa Etchart, Nicolas Lecomte, François-Xavier Dechaume-Moncharmont, Johannes Lang, Jérôme Moreau, Thomas Pagnon, Niels Martin Schmidt, Benoit Sittler, Loïc Bollache, Olivier Gilg
article
Scientific Reports, 2025, 15 (1), pp.19760. ⟨10.1038/s41598-025-02318-y⟩
resume
Abstract Why parental care strategies can vary from uniparental to biparental care across taxa remains unclear, likely because various sets of ecological conditions are at-play. Here we tested ten possible hypotheses to decipher the direct and indirect impacts of critical factors likely to influence the parental care strategy during incubation in Sanderlings ( Calidris alba ), one of the few species that uses both types of care during that critical time of the breeding cycle. We examined three ecological factors (timing of local snowmelt, regional temperatures, and the North Atlantic Oscillation experienced just before breeding), one trophic factor (predation pressure), and two social factors (relative abundance of Sanderlings and their laying dates). Using long-term data from Greenland (2011–2023), path analyses revealed that laying date and snowmelt influence parental care strategies during incubation, with indirect climatic effects during migration and on breeding grounds. We observed a greater proportion of uniparental nests in years with delayed laying dates, and the reverse in years with delayed snowmelt. These findings underscore the complex interplay between environmental parameters and parental care strategies, offering insights into how these strategies are likely to respond to rapidly changing Arctic ecological conditions driven by climate change.
typdoc
Journal articles
DOI
DOI : 10.1038/s41598-025-02318-y
Accès au texte intégral et bibtex
https://hal.science/hal-05100165/file/2025_Etchart_Scientific_Rep.pdf BibTex
titre
A Comprehensive Occurrence Dataset for European Ostracoda Inhabiting Groundwater and Groundwater‐Dependent Ecosystems
auteur
Nataša Mori, Živa Vehovar, Traian Brad, Gergely Balázs, Constanze Englisch, Cene Fišer, Santiago Gaviria, Sanja Gottstein, Christian Griebler, Marius Kenesz, Lee R F D Knight, Florian Malard, Stefano Mammola, Pierre Marmonier, Alejandro Martínez, Maja Zagmajster
article
Global Ecology and Biogeography, 2025, 34:e70065, ⟨10.1111/geb.70065⟩
resume

Motivation: Groundwater ecosystems sustain a unique and globally important biodiversity but remain understudied due to sampling and exploration challenges, as well as a shortage of taxonomic experts. Groundwater ostracods, like other groundwater taxa, exhibit a high degree of endemism, rarity and subterranean specialisation, positioning them as potentially vulnerable organisms. To better understand biodiversity patterns and the conservation needs of this highly diverse group, we assembled a team of experts to gather the most comprehensive information available about groundwater ostracods in Europe. We present a dataset comprising 2065 occurrence records of 110 species, 11 undescribed species and 5 subspecies of groundwater ostracods. This open dataset may support future research on the distribution, evolutionary pathways and conservation needs of European groundwater ostracods, as well as inspire targeted sampling efforts in regions with currently limited data available.

typdoc
Journal articles
DOI
DOI : 10.1111/geb.70065
Accès au texte intégral et bibtex
https://hal.science/hal-05400882/file/Mori_et_al_GEB_2025.pdf BibTex
titre
Extended incubation recesses increase before nest abandonment in a high-arctic shorebird
auteur
Léa Etchart, Nicolas Lecomte, François-Xavier Dechaume-Moncharmont, Jérôme Moreau, Johannes Lang, Thomas Pagnon, Benoit Sittler, Maria Teixeira, Loïc Bollache, Olivier Gilg
article
Oecologia, 2025, 207 (6), pp.92. ⟨10.1007/s00442-025-05735-y⟩
resume
Parents can abandon their current clutch when reaching a physiological threshold to prioritise their survival and future breeding in the trade-off against current reproduction. Incubation is metabolically costly, and regular recesses are necessary to replenish energy reserves. Thus, an increase in the duration of these foraging trips may signal diminishing reserves and perhaps impending abandonment. Here, we tested the hypothesis that the probability of abandonment of uniparental nest is directly linked to the duration of extended recesses (i.e., recesses > 120 min). Analysing 13 years of breeding behaviour from Sanderlings (Calidris alba) using thermologgers placed in 120 nests, we found that both the frequency and duration of extended recesses were higher in nests that were ultimately abandoned. The probability of nest abandonment increased with time spent in extended recesses during incubation, with the final day before abandonment proving critical in the decision-making. In contrast, short recesses showed no relationship with abandonment probability, and neither recess type changed significantly as nests approached hatching, confirming the specificity of extended recesses as indicators of abandonment. With such results, parents likely remain at the nest until their reserves fall below a physiological threshold, when they have no choice but to leave the nest when the costs-benefits balance becomes unsustainable for the parent. Our study suggests the key link between extended recesses and nest abandonment; it paves the way for quantifying foraging success and variations in energy reserves of individuals to provide deeper insights into the mechanisms driving reproductive decisions and their impact on population dynamics.
typdoc
Journal articles
DOI
DOI : 10.1007/s00442-025-05735-y
Accès au bibtex
BibTex
titre
A multi-scaling approach showing a transient metabolic mismatch in a freshwater fish ( Zingel asper ) during an acute heat stress
auteur
Julia Watson, Chloé Souques, François-Xavier Dechaume-Moncharmont, Damien Roussel, Julie Le Guyader, Rémy Lassus, Ludovic Guillard, Angeline Clair, Laétitia Averty, Candice Bastianini, Lilian Redon, Anne Morales-Montaron, Yann Voituron, Martin Daufresne, Elisa Thoral, Loïc Teulier
article
Journal of Experimental Biology, 2025, 228 (10), pp.jeb250202. ⟨10.1242/jeb.250202⟩
resume
Heat stress events will be more frequent and intense in the future. These events will challenge the capacity of organisms to exhibit sufficient metabolic flexibility to adapt to such variations. To better understand the acclimation processes implemented in response to acute warming, with an integrative approach we examined in vivo metabolic rate and cardiac mitochondrial respiration in the Rhône streber, during and after a heat stress on a precise time line. The temperature was raised from 13°C to 18°C (+1°C per hour) and maintained at 18°C for 5 days, before returning to 13°C at the same rate. We repeatedly measured, during the heat stress and 5 days after the end of the event, in vivo metabolic rate in the same individuals and cardiac mitochondrial respiration from different individuals. At the organismal level, oxygen consumption increased in line with warming, and was followed by a return to pre-acclimated levels just after the end of the heat stress. Conversely, cardiac mitochondrial respiration decreased during the heat stress, especially 24 h in, and recovered at the end of the event. Our results suggest that the heat stress was responsible for a metabolic mismatch in the strebers. Indeed, we observed (i) a strong thermodynamic effect without any acclimation process, suggesting that the range of temperatures chosen was not stressful for the fish, and (ii) the establishment of a transitory energy saving process. Our results underline the need for more integrative studies to understand how organisms will adapt to climate change.
typdoc
Journal articles
DOI
DOI : 10.1242/jeb.250202
Accès au texte intégral et bibtex
https://hal.science/hal-05095409/file/manuscript%20revised.pdf BibTex
titre
Potential impacts of floating photovoltaics on carbon fluxes across aquatic-terrestrial boundaries
auteur
Paul Vouhe, Héctor Rodríguez-Pérez, Björn Wissel, Thierry Lengagne, Anne Metaireau, Fanny Colas
article
Knowledge and Management of Aquatic Ecosystems, 2025, 426, pp.13. ⟨10.1051/kmae/2025005⟩
resume
Floating photovoltaic (FPV) systems are a rapidly expanding renewable energy technology, yet their potential ecological impacts, particularly cross-ecosystem effects, remain poorly understood. This review synthesises current knowledge on organic matter (OM) dynamics and carbon (C) fluxes in lake ecosystems, examining how FPV installations may influence lake C cycling, insect emergence, and greenhouse gas (GHG) emissions. FPV can alter OM availability, shifting the balance between autochthonous and allochthonous inputs. In the short term, installation may increase OM deposition due to the rapid decline of primary producers and riparian vegetation removal. Long-term effects remain uncertain but could drive metabolic regime shifts toward autotrophy or heterotrophy, depending on initial lake conditions. These changes, combined with reduced oxygen and temperature, could significantly alter aquatic food webs, modify GHG fluxes, and alter C dynamics. Increased OM sedimentation could enhance GHG production, while reduced and delayed insect emergence may weaken C transfer to terrestrial ecosystems. Declines in emergent insect biomass could impact terrestrial predators, such as bats and birds, triggering cascading ecological effects. Overall, FPV may reshape carbon fluxes across aquatic–terrestrial boundaries, with impacts varying by FPV coverage and lake-specific factors. There is an urgent need for ecosystem-scale studies and long-term data to assess FPV-induced changes in C fluxes and mitigate its potential impacts on biodiversity and the global C cycle.
typdoc
Journal articles
DOI
DOI : 10.1051/kmae/2025005
Accès au texte intégral et bibtex
https://hal.science/hal-05074589/file/kmae240115.pdf BibTex
titre
Increased assimilation efficiency and mortality rate in Gammarus fossarum exposed to PVC microplastics
auteur
Nans Barthelemy, Florian Mermillod-Blondin, Anabelle Espeyte, Mohammad Wazne, Frédéric Hervant, Ghislaine Broillet, Davide Degli-Esposti, Arnaud Chaumot, Stefan Krause, Laurent Simon, Thibault Datry
article
Environmental Pollution, 2025, 372, pp.126029. ⟨10.1016/j.envpol.2025.126029⟩
resume
Shredder organisms play a key role in rivers by feeding and fragmenting coarse organic matter that will then be exploited by other consumers. The effects of microplastics (MPs) on Gammarus sp., an ubiquitous genus of freshwater amphipods, and its shredding activity have been broadly investigated. However, the potential behavioral and physiological effects of different sizes of MPs on Gammarus sp. remain overlooked despite the recognized influence of MP size on MP toxicity. This study investigated the effects of a 28-day exposure to four different concentrations of two size fractions of PVC-microplastics (PVC-MPs), on Gammarus fossarum mortality rate, feeding rate, assimilation efficiency, and expression of proteins involved in key processes. Increased mortality was observed for all treatments exposed to PVC-MPs, with higher mortality in the presence of smaller PVC- MPs at the highest concentration. No protein biomarker modulation was observed in presence of PVC-MPs, suggesting that no metabolic stress but direct physical damages of PVC-MPs might have led to the observed mortalities. No difference was observed for feeding rates, but a higher assimilation efficiency was measured for individuals exposed to PVC-MPs, regardless of the concentration. This could be due to energy reallocation towards defense mechanisms or indicate a potential shift in digestive microbiota. This study highlighted the toxicity of PVC-MPs, particularly of smaller sizes and even at relatively low concentration, for Gammarus fossarum. PVC-MP pollution may therefore alter the functional integrity of river ecosystems by reducing the abundance of shredder organisms and, subsequently, the process of leaf litter decomposition.
typdoc
Journal articles
DOI
DOI : 10.1016/j.envpol.2025.126029
Accès au texte intégral et bibtex
https://hal.science/hal-05099610/file/Barthe%CC%81le%CC%81my%20et%20al.%202025.pdf BibTex
titre
Fossil leaf cuticle: Best practices for preparation and paleo-CO2 analysis
auteur
Xiaoqing Zhang, Dana Royer, Carina Colombi, Juan Martin Drovandi, Jennifer Mcelwain, Gaëtan Guignard, Qin Leng, Barry Lomax, Nathan Sheldon, Rebekah Stein, Garland Upchurch, Yongdong Wang, Hong Yang, Richard Barclay, Ying Cui, Wolfram Kürschner, Joseph Milligan, Isabel Montañez, Jon Richey, Tammo Reichgelt, Gongle Shi, Selena Smith, Margret Steinthorsdottir
article
Earth-Science Reviews, 2025, 264, pp.105104. ⟨10.1016/j.earscirev.2025.105104⟩
resume
Leaf cuticle is the waxy envelope that protects leaves from desiccation, UV damage, and abrasion. The cuticle encodes information about a plant’s chemistry and leaf epidermal and stomatal cell morphology. Fossil leaf cuticle has been used to determine taxonomic affinities for almost two centuries and recognized in recent decades for its value in reconstructing paleoenvironments and paleoclimates, especially atmospheric CO2. Fossil leaf cuticle preparation techniques are typically reported as single workflows tied to individual studies, starting with finding fossils in the field through the steps of preparing cuticle for chemical and morphological analysis, including decisions about type of microscopy and level of sampling effort at different spatial scales (number of fields-of-view, leaves, and species). The siloed nature of these publications makes finding appropriate methods and workflows for new studies difficult, especially for less experienced researchers. Here, we attempt to syn- thesize a breadth of existing workflows and make recommendations to guide methodological decision-making for new studies, with a particular focus on paleo-CO2 reconstruction via a proxy based on leaf gas-exchange prin- ciples (the Franks model). We describe and annotate chemical procedures for preparing cuticles for analysis and include recommendations regarding leaf conditions for which each is most appropriate. For studies making repeated measures of morphology (e.g., stomatal density), we describe a resampling routine that can guide decision-making, in real time, about sampling effort.
typdoc
Journal articles
DOI
DOI : 10.1016/j.earscirev.2025.105104
Accès au texte intégral et bibtex
https://hal.science/hal-05010423/file/Zhang%20et%20al%202025.pdf BibTex
titre
Presumed chaetetids in Smithian (early Olenekian, Early Triassic) microbial-sponge limestones, Rock Canyon, Arizona, USA
auteur
Nicolas Olivier, Arnaud Brayard, Bernard Lathuiliere, James F Jenks, Kevin G Bylund, Daniel A Stephen, Gilles Escarguel, Emmanuel Fara
article
Lethaia, 2025, 58 (2), pp.1-23. ⟨10.18261/let.58.2.6⟩
resume
Outcrops in Rock Canyon (northwestern Arizona) show a Smithian (early Olenekian, Early Triassic) sedimentary succession recording a marine transgression over fluvial conglomerates and leading to several metre-thick microbial limestones. These microbial limestones are associated with a diverse sponge assemblage including keratose demosponges, halichondrids, geodiids, lyssacine hexactinellids, and presumed chaetetids, suggesting that Early Triassic sponge communities were more diverse than previously thought. A presumed chaetetid (hypercalcified demosponge) specimen, identified by its lamellar 3D structure, shows slightly raised, subcircular domal structures formed by narrow, joining tubes arranged in a bush-like pattern. Microscopic observations also reveal residual tabula and sparse spicules. Other presumed chaetetid specimens show intense recrystallization that obliterates most of their characteristic skeletal structure. Although chaetetid sponges are well-documented in the Palaeozoic, they were absent until now from the Late Permian to Late Triassic record. Occurring about 2.5 myr after the Permian-Triassic extinction, the specimens from Rock Canyon would be the first Early Triassic chaetetids and the oldest known in the Mesozoic record. The rarity of Early Triassic chaetetids may be due to sampling and taphonomic biases. Their intense recrystallization and elongated shape exhibit a morphological convergence with large fenestrae commonly found in microbial limestones. During the Early Triassic, buildups composed of microbial limestones and sponges were widespread, occuring in the Panthalassa, Neotethys and Palaeotethys oceans across various depositional settings, from saline lagoons to open marine environments of varying depths. This broad distribution questions the view that these microbial-sponge communities were confined to localized refuge settings or stressful environmental conditions in the aftermath of the Permian-Triassic crisis.
typdoc
Journal articles
DOI
DOI : 10.18261/let.58.2.6
Accès au texte intégral et bibtex
https://hal.science/hal-05111391/file/olivier%20et%20al%202025%20--%20Lethaia.pdf BibTex
titre
The relative influence of habitat density, landscape configuration and spatial sorting on population expansion: a simulation test
auteur
Jean Secondi, Jan Altenhofen, Giovanni Vimercati, Dennis Rödder
article
Landscape Ecology, 2025, 40 (5), pp.88. ⟨10.1007/s10980-025-02094-0⟩
resume
Context: Population expansion into new areas is a common phenomenon resulting from changes in ecological conditions or human-assisted introduction. In the latter case, populations spread into areas where they did not evolve causing various ecological and socio-economic impacts. Spatial sorting ( i.e. the enhanced dispersal capacity over time at the periphery of an expanding range) and landscape are two major factors affecting spread dynamics in expanding populations. Objectives: While both factors have been frequently studied independently, their relative influence to modulate the spread rate of expanding populations has been significantly unexplored. We addressed this issue through a modeling approach. Methods We simulated the spread of an invasive amphibian, Xenopus laevis , in various landscape windows within and around its colonized ranges in western France. Using UNICOR, we ran colonization simulations on 30 km × 30 km windows of an experimentally parameterized resistance layer at three intensities of spatial sorting. Results: Habitat (pond) density and spatial sorting positively affected the rate of population expansion in the windows and interacted: higher spatial sorting and pond density increased the invaded area, number of colonized ponds, and maximal traveled distance per time unit. In contrast, none of the four landscape configuration metrics improved the models, suggesting that they have limited influence on population expansion. Thus, the effect of spatial sorting on population spread was enhanced by pond density but not by landscape configuration. Conclusions: Our results highlight the importance to jointly consider habitat density and spatial sorting in predictive modeling of the spread process in expanding populations, particularly for biological invaders.
typdoc
Journal articles
DOI
DOI : 10.1007/s10980-025-02094-0
Accès au texte intégral et bibtex
https://hal.science/hal-05453284/file/2025%20Secondi%20et%20al%20Landscape%20Ecology.pdf BibTex
titre
Global impoverishment of natural vegetation revealed by dark diversity
auteur
Meelis Pärtel, Riin Tamme, Carlos Carmona, Kersti Riibak, Mari Moora, Jonathan Bennett, Alessandro Chiarucci, Milan Chytrý, Francesco de Bello, Ove Eriksson, Susan Harrison, Robert John Lewis, Angela Moles, Maarja Öpik, Jodi Price, Vistorina Amputu, Diana Askarizadeh, Zohreh Atashgahi, Isabelle Aubin, Francisco Azcárate, Matthew Barrett, Maral Bashirzadeh, Zoltán Bátori, Natalie Beenaerts, Kolja Bergholz, Kristine Birkeli, Idoia Biurrun, José Blanco-Moreno, Kathryn Bloodworth, Laura Boisvert-Marsh, Bazartseren Boldgiv, Pedro Brancalion, Francis Brearley, Charlotte Brown, C. Guillermo Bueno, Gabriella Buffa, James Cahill, Juan Campos, Giacomo Cangelmi, Michele Carbognani, Christopher Carcaillet, Bruno Cerabolini, Richard Chevalier, Jan Clavel, José Costa, Sara Cousins, Jan Čuda, Mariana Dairel, Michele Dalle Fratte, Alena Danilova, John Davison, Balázs Deák, Silvia del Vecchio, Iwona Dembicz, Jürgen Dengler, Jiri Dolezal, Xavier Domene, Miroslav Dvorsky, Hamid Ejtehadi, Lucas Enrico, Dmitrii Epikhin, Anu Eskelinen, Franz Essl, Gaohua Fan, Edy Fantinato, Fatih Fazlioglu, Eduardo Fernández-Pascual, Arianna Ferrara, Alessandra Fidelis, Markus Fischer, Maren Flagmeier, T’ai Forte, Lauchlan Fraser, Junichi Fujinuma, Fernando Furquim, Berle Garris, Heath Garris, Melisa Giorgis, Gianpietro Giusso del Galdo, Ana González-Robles, Megan Good, Moisès Guardiola, Riccardo Guarino, Irene Guerrero, Joannès Guillemot, Behlül Güler, Yinjie Guo, Stef Haesen, Martin Hejda, Ruben Heleno, Toke Høye, Richard Hrivnák, Yingxin Huang, John Hunter, Dmytro Iakushenko, Ricardo Ibáñez, Nele Ingerpuu, Severin Irl, Eva Janíková, Florian Jansen, Florian Jeltsch, Anke Jentsch, Borja Jiménez-Alfaro, Madli Jõks, Mohammad Jouri, Sahar Karami, Negin Katal, András Kelemen, Bulat Khairullin, Anzar Khuroo, Kimberly Komatsu, Marie Konečná, Ene Kook, Lotte Korell, Natalia Koroleva, Kirill Korznikov, Maria Kozhevnikova, Łukasz Kozub, Lauri Laanisto, Helena Lager, Vojtech Lanta, Romina Lasagno, Jonas Lembrechts, Liping Li, Aleš Lisner, Houjia Liu, Kun Liu, Xuhe Liu, Manuel Esteban Lucas-Borja, Kristin Ludewig, Katalin Lukács, Jona Luther-Mosebach, Petr Macek, Michela Marignani, Richard Michalet, Tamás Miglécz, Jesper Erenskjold Moeslund, Karlien Moeys, Daniel Montesinos, Eduardo Moreno-Jiménez, Ivan Moysiyenko, Ladislav Mucina, Miriam Muñoz-Rojas, Raytha Murillo, Sylvia Nambahu, Lena Neuenkamp, Signe Normand, Arkadiusz Nowak, Paloma Nuche, Tatjana Oja, Vladimir Onipchenko, Kalina Pachedjieva, Bruno Paganeli, Begoña Peco, Ana Peralta, Aaron Pérez-Haase, Pablo Peri, Alessandro Petraglia, Gwendolyn Peyre, Pedro Antonio Plaza-Álvarez, Jan Plue, Honor Prentice, Vadim Prokhorov, Dajana Radujković, Soroor Rahmanian, Triin Reitalu, Michael Ristow, Agnès Robin, Ana Belén Robles, Daniel Rodríguez Ginart, Raúl Román, Ruben Roos, Leonardo Rosati, Jiří Sádlo, Karina Salimbayeva, Rut Sánchez de Dios, Khaliun Sanchir, Cornelia Sattler, John Scasta, Ute Schmiedel, Julian Schrader, Nick Schultz, Giacomo Sellan, Josep Serra-Diaz, Giulia Silan, Hana Skálová, Nadiia Skobel, Judit Sonkoly, Kateřina Štajerová, Ivana Svitková, Sebastian Świerszcz, Andrew Tanentzap, Fallon Tanentzap, Rubén Tarifa, Pablo Tejero, Dzhamal Tekeev, Michael Tholin, Ruben Thormodsæter, Yichen Tian, Alla Tokaryuk, Csaba Tölgyesi, Marcello Tomaselli, Enrico Tordoni, Péter Török, Béla Tóthmérész, Aurèle Toussaint, Blaise Touzard, Diego Trindade, James Tsakalos, Sevda Türkiş, Enrique Valencia, Mercedes Valerio, Orsolya Valkó, Koenraad van Meerbeek, Vigdis Vandvik, Jesus Villellas, Risto Virtanen, Michaela Vítková, Martin Vojík, Andreas von Hessberg, Jonathan von Oppen, Viktoria Wagner, Ji-Zhong Wan, Chun-Jing Wang, Sajad Wani, Lina Weiss, Tricia Wevill, Sa Xiao, Oscar Zárate Martínez, Martin Zobel
article
Nature, 2025, 641, pp.917-924. ⟨10.1038/s41586-025-08814-5⟩
resume
Anthropogenic biodiversity decline threatens the functioning of ecosystems and the multiple benefits they provide to humanity1. Besides causing species losses in directly affected locations, human influence might also reduce biodiversity in relatively unmodified vegetation if far-reaching anthropogenic effects trigger local extinctions and hinder recolonisation. Here, we show that local plant diversity is globally negatively related to the level of anthropogenic activity in the surrounding region. Impoverishment of natural vegetation was only evident when we considered community completeness: the proportion of all suitable species in the region that are present at a site. To estimate community completeness, we compared the number of recorded species with the dark diversity — ecologically-suitable species that are absent from a site but present in the surrounding region2. In the sampled regions with minimal Human Footprint Index, an average of 35% of suitable plant species were present locally, compared with less than 20% in highly-impacted regions. Besides the potential to uncover overlooked threats to biodiversity, dark diversity also provides guidance for nature conservation. Species in the dark diversity remain regionally present, and their local populations might be restored through measures that improve connectivity between natural vegetation fragments and reduce threats to population persistence.
typdoc
Journal articles
DOI
DOI : 10.1038/s41586-025-08814-5
Accès au texte intégral et bibtex
https://hal.science/hal-05022670/file/s41586-025-08814-5.pdf BibTex
titre
Morphological evolution in a time of phenomics
auteur
Anjali Goswami, Julien Clavel
article
Paleobiology, 2025, 51 (1), pp.195-213. ⟨10.1017/pab.2024.35⟩
resume
Abstract Organismal morphology was at the core of study of biodiversity for millennia before the formalization of the concept of evolution. In the early to mid-twentieth century, a strong theoretical framework was developed for understanding both pattern and process of morphological evolution, and the 50 years since the founding of this journal capture a transformational period in the quantification of morphology and in analytical tools for estimating how morphological diversity changes through time. We are now at another inflection point in the study of morphological evolution, with the availability of vast amounts of high-resolution data sampling extant and extinct diversity allowing “omics”-scale analysis. Artificial intelligence is accelerating the pace of phenomic data acquisition even further. This new reality, in which the ability to obtain data is quickly outpacing the ability to analyze it with robust, realistic evolutionary models, brings a new set of challenges. Phylogenetic comparative methods have provided new insights into the processes generating morphological diversity, but the reliance on molecular data and resultant exclusion of fossil data from most large phylogenetic trees has well-established negative impacts on evolutionary analyses, as we demonstrate with examples of standard single-rate evolutionary models, mode- and rate-shift models, and a recently described Ornstein-Uhlenbeck climate model. Further development of methods for phylogenetic comparative analysis of high-dimensional data is needed, but existing tools can refine our understanding and expectations of morphological evolution and the generation of morphological diversity under different scenarios, as we demonstrate with analyses of placental skull evolution through the Cenozoic. Fully transitioning the study of morphological evolution into the omics era will involve the development of tools to automate the extraction of meaningful, comparable morphometric data from images, integrate fossil data into large phylogenetic trees and downstream evolutionary analyses, and generate robust models that accurately reflect the complexity of evolutionary processes and are well-suited for high-dimensional data. Combined, these advancements will solidify the emerging field of evolutionary phenomics and appropriately center it around the analysis of deep-time data.
typdoc
Journal articles
DOI
DOI : 10.1017/pab.2024.35
Accès au texte intégral et bibtex
https://hal.science/hal-05058030/file/Goswami%20et%20al.%202025.pdf BibTex
titre
Phosphate precipitation, phosphatisation and detrital filling dynamics in karstic contexts: The example of the Dams ‘phosphatière’, Quercy (SW France)
auteur
Carine Lézin, Kévin Moreau, Sébastien Fabre, Christian Dupuis, Thierry Pelissié, Patrick Sorriaux, Gilles Escarguel, Maeva Orliac, Pierre-Olivier Antoine, Monique Vianey-Liaud, Romain Weppe
article
Chemical Geology, 2025, 676, pp.122586. ⟨10.1016/j.chemgeo.2024.122586⟩
resume
Phosphate rocks are the most important natural source of phosphorus. While a large literature discusses the conditions of their formation in marine environments, few document their formation in a terrestrial context. The Quercy phosphate mines in south-west France, known as phosphati` eres, are notable for their exceptional Cenozoic palaeontological content and represent a rare example of phosphate precipitation in a non-marine environment. Using the Dams ‘phosphati` ere’ as an example, this paper reconstructs the conditions under which these terrestrial phosphorites formed during the Eocene-Oligocene interval by analysing karstic sediments (sedimentology, grain size, mineralogy, and geochemistry). It discusses the origin of the karst infills and the processes involved in the genesis of phosphate minerals. The site shows three phases of infill that frame the Eocene-Oligocene transition (EOT). Each deposit contains both a detrital fraction and a phosphate-bearing neo-formed fraction. The detrital input results from the mass transport of Eocene-Oligocene“siderolithic” sediments (formation of reddish clays with ferruginous concretions) derived from the reworking of lateritic paleosols. This siderolithic material was formed at the surface directly from fresh detrital sediments resulting from the mechanical alteration of the crystalline parent rock, located to the east in the French Massif Central. The climatic changes around the EOT seem to be reflected only by the groundwater dynamics recorded in the karst deposits: channels are mainly present during the late Eocene, suggesting galleries well supplied with water, while abundant desiccation cracks indicate intense dry periods during the early Oligocene. Phosphate minerals, mainly fluorapatites and carbonate fluorapatite, are present as precipitated laminated crusts along the karst walls, and as mineralised fossils and phosphatised karst walls showing epigenetic processes. Field data and thermodynamic modelling suggest a major phosphate precipitation phase before karst opening, filling, and subsequent remobilisation. Phosphate rocks and phosphatised bones exhibit a marine geochemical signature, suggesting the contribution of the marine carbonate aquifer as a source of phosphorus (by dissolution of the host rock). However, the geometric relationships of the phosphates with infills derived from reworked alterites, and the enrichment in REE, challenge the influence of pedogenetic activity on phosphatogenesis. The laminated nature of some phosphate crusts would suggest bacterial activity in the phosphate precipitation process.
typdoc
Journal articles
DOI
DOI : 10.1016/j.chemgeo.2024.122586
Accès au texte intégral et bibtex
https://hal.science/hal-04895581/file/Lezin%20et%20al%202025%20-%20Chem%20Geol%20-%20Journal%20Pre-Print.pdf BibTex
titre
Restoring genetic diversity to facilitate the implementation of the EU Nature Restoration Law
auteur
David O'Brien, Tsipe Aavik, Ancuta Fedorca, Martin C Fischer, Robin Goffaux, Sean Hoban, Peter Hollingsworth, Christina Hvilsom, Robert Jehle, Belma Kalamujić Stroil, Francine Kershaw, Peter Klinga, Alexander Kopatz, Deborah M Leigh, Ivan Paz-Vinas, Marine Robuchon, Gernot Segelbacher, Viktoria Takacs, Cristiano Vernesi, Linda Laikre
article
Biological Conservation, 2025, 303, pp.110995. ⟨10.1016/j.biocon.2025.110995⟩
resume
overnments and economic blocs are recognising that the world faces a biodiversity crisis. The restoration of biodiversity to the levels prior to widespread human induced damage has been incorporated as a crucial component of conservation in the Global Biodiversity Framework of the Convention of Biological Diversity. The Nature Restoration Law (NRL) forms part of the European Union’s response and after its adoption by the Eu- ropean Parliament and the Council of the European Union, it has formally become the Nature Restoration Regulation (NRR). The NRL aims to play a role in restoring ecosystems, habitats and species but does not expressly include genetic diversity, the third biodiversity component. Considering genetic diversity in strategic biodiversity planning is important to help nature adapt to rapid anthropogenic change. We have reviewed the text of the NRL and note opportunities to incorporate genetic diversity in National Restoration Plans to augment its implementation. In particular, genetic diversity assessments are well aligned with the NRL’s aspiration to enhance connectivity, and genetic indicators can assess the effectiveness of its implementation. Here we give examples where restoration has incorporated genetic diversity to ensure long term wide-reaching success. This is of relevance beyond the NRL and applies generally to policy for nature restoration efforts globally, especially those related to the Global Biodiversity Framework.
typdoc
Journal articles
DOI
DOI : 10.1016/j.biocon.2025.110995
Accès au texte intégral et bibtex
https://hal.science/hal-05109272/file/O%27Brien%20et%20al.%202025.pdf BibTex
titre
Review of conceptual and empirical approaches to characterize infiltration
auteur
Christelle Basset, Majdi Abou Najm, Rafael Angulo-Jaramillo, Vincenzo Bagarello, Behzad Ghanbarian, Simone Di Prima, Massimo Iovino, Laurent Lassabatère, Ryan Stewart
article
Vadose Zone Journal, 2025, 24 (1), pp.e20393. ⟨10.1002/vzj2.20393⟩
resume
Abstract Infiltration regulates the movement and storage of water at the soil–atmosphere interface and is, therefore, a key component of many related physical and biogeochemical processes. Numerous studies have examined infiltration over the past two centuries. These efforts have resulted in the development of numerous models that capture the effects of specific soil properties and initial and boundary conditions. This proliferation of models has advanced our collective ability to understand infiltration processes but has also made it challenging for researchers to select appropriate approaches for analyzing experimental infiltration data or for conducting basic research on soil parameters like saturated hydraulic conductivity or sorptivity. Here, we aimed to reduce this uncertainty by developing a comprehensive literature review of published infiltration models, including their underlying philosophies and evolution over the years. Through this effort, we compiled and examined 138 unique infiltration models. We grouped models into two major categories, empirical and conceptual, noting that boundaries between those two categories are at times debatable. After classifying and providing a full historical retrospective of these models, we examined specific model parameters and how their usage has changed with time. We also reviewed different methods applied to estimate infiltration parameters, as well as the challenges that arise when using such methods. Finally, we proposed a framework for identifying suitable models depending on field conditions, experimental plan, and data availability.
typdoc
Journal articles
DOI
DOI : 10.1002/vzj2.20393
Accès au texte intégral et bibtex
https://hal.science/hal-04945903/file/Basset_2025.pdf BibTex
titre
Variation in the fitness impact of translationally optimal codons among animals
auteur
Florian Bénitière, Tristan Lefébure, Laurent Duret
article
Genome Research, 2025, 35 (3), pp.446-458. ⟨10.1101/gr.279837.124⟩
resume
Early studies in invertebrate model organisms (fruit flies, nematodes) showed that their synonymous codon usage is under selective pressure to optimize translation efficiency in highly expressed genes (a process called translational selection). In contrast, mammals show little evidence of selection for translationally optimal codons. To understand this difference, we examined the use of synonymous codons in 223 metazoan species, covering a wide range of animal clades. For each species, we predicted the set of optimal codons based on the pool of tRNA genes present in its genome, and we analyzed how the frequency of optimal codons correlates with gene expression to quantify the intensity of translational selection ( S ). Surprisingly, few metazoans show clear signs of translational selection. As predicted by the nearly neutral theory, the highest values of S are observed in species with large effective population sizes ( N e ). Overall, however, N e appears to be a poor predictor of the intensity of translational selection, suggesting important differences in the fitness effect of synonymous codon usage across taxa. We propose that the few animal taxa that are clearly affected by translational selection correspond to organisms with strong constraints for a very rapid growth rate.
typdoc
Journal articles
DOI
DOI : 10.1101/gr.279837.124
Accès au texte intégral et bibtex
https://cnrs.hal.science/hal-04737716/file/B%C3%A9niti%C3%A8re%20et%20al.%20-%202025%20-%20Variation%20in%20the%20fitness%20impact%20of%20translationally.pdf BibTex
titre
Floating photovoltaics strongly reduce water temperature: A whole-lake experiment
auteur
Regina L.G. Nobre, Chloé Vagnon, Stéphanie Boulêtreau, Fanny Colas, Frédéric Azémar, Loïc Tudesque, Nathalie Parthuisot, Paul Millet, Julien Cucherousset
article
Journal of Environmental Management, 2025, 375, pp.124230. ⟨10.1016/j.jenvman.2025.124230⟩
resume
Floating photovoltaics (FPVs), solar panels installed on floating structures in freshwater ecosystems such as lakes, represent a growing renewable technology aimed at decarbonizing the energy sector. However, robust empirical assessments of its environmental effects are still lacking. We used a Before-After-Control-Impact design replicated at the ecosystem level (n =6 lakes: three lakes with FPV compared to three non-FPV lakes) to determine the global effects of FPV on water temperature over three years and allowing to isolate FPV effects from natural variability. Overall, we found that the presence of FPV strongly decreased annual water temperature (1.2 ◦C on average). The reduction in water temperature induced by FPV increased significantly with air temperature and differed between seasons, with stronger reductions (up to 3 ◦C) observed during warmest days of the year in spring and summer. In addition, the reduction in water temperature also occurred in areas of the lakes that were not covered by FPV. In the context of climate warming, decreased water temperature in summer could benefit freshwater organisms but these benefits could be counterbalanced by other negative impacts such as decreases in dissolved oxygen and modifications in the C cycle, including greenhouse gas emissions. Therefore, the cascading effects of FPV on freshwater biodiversity and ecosystem functioning still need to be assessed.
typdoc
Journal articles
DOI
DOI : 10.1016/j.jenvman.2025.124230
Accès au bibtex
BibTex
titre
Phylogenetic Origin of Morphologically Cryptic Species Shapes Co‐Occurrence and Sympatry Patterns
auteur
Teo Delić, Špela Di Batista Borko, Ester Premate, Behare Rexhepi, Roman Alther, Mara Knüsel, Florian Malard, Dieter Weber, Fabio Stoch, Jean‐françois Flot, Cene Fišer, Florian Altermatt
article
Freshwater Biology, 2025, 70e70000 (2), ⟨10.1111/fwb.70000⟩
resume
ABSTRACT Cryptic species are an important part of freshwater biodiversity, yet it remains unclear how these species integrate into communities from local to regional geographic scales. To protect biodiversity, particularly overlooked cryptic species, an accurate understanding of the underlying processes and adequate level of protection is needed. We analysed patterns of syntopies (local co‐occurrences) and sympatries (regional range overlap) to explore how the phylogenetic origin of cryptic species shapes biodiversity patterns. We hypothesised (i) that syntopies were more common among distantly than closely related cryptic species, and (ii) that the existing sympatries were an outcome of phylogenetic relatedness and dispersal. The hypotheses were tested on a polyphyletic species complex of subterranean amphipod species ( Niphargus rhenorhodanensis complex) by deploying molecular species delimitation, time‐calibrated phylogenies, and co‐occurrence analyses with probabilistic and generalised linear models (GLM). The studied complex comprised 37–48 molecular operational taxonomic units (MOTUs) from nine different clades, with syntopies occurring at random or less frequently than expected. GLM indicated age of divergence did not predict species sympatries, although they emerged more frequently among MOTUs from different clades. Sympatries, however, emerged through dispersal, in MOTUs with large geographic ranges. These mostly overlapped at the foothills of the Alps, the Jura and the Central Massif. We conclude that the observed spatial patterns are mainly driven by dispersal and presumably reflect the geographic circumstances of speciation. While species richness on a local scale may be an outcome of competition and dispersal, regional biodiversity patterns presumably arise through a clade‐level cascade of historical events, including orogeny and climatic shifts.
typdoc
Journal articles
DOI
DOI : 10.1111/fwb.70000
Accès au bibtex
BibTex
titre
Historical biogeography and systematics of yellow-bellied toads (Bombina variegata), with the description of a new subspecies from the Balkans
auteur
Christophe Dufresnes, Simeon Lukanov, Sven Gippner, Johanna Ambu, Ilias Strachinis, Dragan Arsovski, Benjamin Monod-Broca, Hugo Cayuela, Petros Lymberakis, Daniele Canestrelli, Dan Cogălniceanu, Nikolay A Poyarkov, Spartak N Litvinchuk, Tomasz Suchan, Mathieu Denoël, Daniel Jablonski
article
Vertebrate Zoology, 2025, 75, pp.1-30. ⟨10.3897/vz.75.e138687⟩
resume
The Balkan Peninsula hosts a great proportion of Europe’s biodiversity, and this is well illustrated by amphibian richness and endemism. Among them, the yellow-bellied toad Bombina variegata has been a model in ecology and evolution, but several aspects of its phylogeography and taxonomy remain surprisingly poorly understood. In this study, we combine cytochrome b DNA barcoding data (1238 individuals from 355 localities), mitogenome phylogenetics (17.2 kb), gene-based nuclear phylogenetics (3.7 kb from four gene fragments) and multilocus phylogenomics (4759 loci / ~554 kb obtained by double digest Restriction Associated DNA sequencing; ddRAD-seq) to re-assess the diversification of B. variegata , and revisit its nomenclatural history to assign scientific names to phylogeographic lineages. The analyses support four major lineages, one assigned to B. v. variegata (Carpathians and northwestern ranges), one assigned to B. v. pachypus (Apennine Peninsula), and two assigned to B. v. scabra (Dinarides, Hellenides and Balkanides vs. the Rhodope mountains). Spatiotemporal patterns of diversification suggest a role for a Late Miocene marine incursion in the Pannonian Plain (Paratethys) as the initial trigger of divergence, followed by a vicariance event in the Apennines and a “sky island” process of Pleistocene differentiation in the Balkan Peninsula. As it reached the Dinarides during the Late Pleistocene, B. v. variegata potentially hybridized with B. v. scabra and captured its mitochondrial DNA, which resulted in a massive cyto-nuclear discordance across all northwestern European populations. Finally, we show that the two lineages of B. v. scabra significantly differ in morphology and ventral coloration patterns, and describe the Rhodope lineage as a new subspecies.
typdoc
Journal articles
DOI
DOI : 10.3897/vz.75.e138687
Accès au texte intégral et bibtex
https://hal.science/hal-04995210/file/VZ_article_138687_en_1.pdf BibTex
titre
Frankenstein matrices: Among‐population life history variation affects the reliability and predictions of demographic models
auteur
Giacomo Rosa, Benedikt Schmidt, Jean‐paul Léna, Benjamin Monod-Broca, Leonardo Vignoli, Emilie Tournier, Eric Bonnaire, Holger Buschmann, Thierry Kinet, Arnaud Laudelout, Remi Fonters, Carlo Biancardi, Anna Di Cerbo, Dominique Langlois, Jean‐marc Thirion, Lucy Morin, Julian Pichenot, Julien Moquet, Hugo Cayuela, Stefano Canessa
article
Journal of Animal Ecology, 2025, 94 (3), pp.436-448. ⟨10.1111/1365-2656.14243⟩
resume
Abstract Population matrix models are routinely used to study the demography of wild populations and to guide management choices. When vital rates are unknown for a specific population or life history stage, researchers often replace them with estimates from other populations of the same species. Such ‘hybrid’ matrices might ignore among‐population life history variation and lead to incorrect inferences. In this study, we examined the real‐world effect of using hybrid matrices on demographic inference and management decisions, using a large dataset on yellow‐bellied toad ( Bombina variegata ) populations, an amphibian species whose life history depends on human land use. We estimated stage‐specific survival and recruitment for 18 populations across different habitat types. We then assessed how estimated population growth rates and elasticities changed when population‐specific vital rates were replaced by estimates from other populations, chosen randomly or based on habitat, demographic or geographic proximity. The use of hybrid matrices mixing demographic estimates from different populations and habitats biased predictions. The mean bias was relatively minor even when sampling randomly across all populations, because our large dataset represented the whole range of life histories and errors cancelled out on average. However, borrowing estimates from geographically close or demographically similar populations substantially reduced the risk of extreme errors. Borrowing from populations from similar habitat types could also reduce bias, but results varied depending on the exact habitat types concerned. Our study illustrates how habitat‐specific among‐population variation in life history affects the reliability of population matrices commonly used in evolutionary demography, ecology and conservation. When the use of hybrid population matrices cannot be avoided, their creation can be informed by additional information about ecological or demographic patterns, helping reduce bias. When such information is not available, we recommend that studies should consider the whole space of parameter estimates (the complete range of estimates available), thus transparently describing the true uncertainty surrounding demographic estimates.
typdoc
Journal articles
DOI
DOI : 10.1111/1365-2656.14243
Accès au bibtex
BibTex
titre
Temperature-dependent benefits and costs of cytoplasmic male sterility in snail Physa acuta
auteur
Sophie Bererd, Patrice David, Loïc Teulier, Sandrine Plénet, Emilien Luquet
article
Proceedings of the Royal Society B: Biological Sciences, 2025, 292 (2038), pp.20241762. ⟨10.1098/rspb.2024.1762⟩
resume
Cytoplasmic male sterility (CMS) originates from a mito-nuclear conflict where mitochondrial genes induce male sterility and nuclear genes restore male fertility in hermaphrodites. The first observation of CMS in animals was reported recently in the freshwater snail Physa acuta where it is associated with two extremes divergent mitotypes D and K. The D individuals are male-steriles while male fertility is restored by nuclear genes in K and are found mixed with the most common male-fertile N mitotype in natural populations (i.e. gynodioecy). We compared male and female fitness, growth rate and metabolism between the three mitotypes at two temperatures as this factor influences CMS in gynodioecious plants via alteration of mitochondrial functioning. Temperature did not affect male sterility which depended only on the mitotype and the presence of restorers. Our results provided evidence that CMS is beneficial to female fitness in the absence of restorers while it is costly in their presence, and furthermore driven by body mass, fulfilling a key theoretical condition for the long-term maintenance of gynodioecy. Fitness benefits and costs mediated by differences in body mass are enhanced at cold temperature, suggesting that the system dynamics may vary according to thermal conditions in nature.
typdoc
Journal articles
DOI
DOI : 10.1098/rspb.2024.1762
Accès au texte intégral et bibtex
https://hal.science/hal-04901658/file/MS%20published%20version.pdf BibTex
titre
Oxygen and sulfur stable isotope ratios of Late Devonian vertebrates trace the relative salinity of their aquatic environments
auteur
Jean Goedert, David Broussard, Jeffrey Trop, Edward Daeschler, Romain Amiot, François Fourel, Sébastien Olive, Arnauld Vinçon-Laugier, Christophe Lécuyer
article
Geological Society of America Bulletin, 2025, ⟨10.1130/B37631.1⟩
resume
Late Devonian aquatic environments hosted the fin-to-limb transition in vertebrates. Upper Devonian (ca. 365−360 Ma) strata in Pennsylvania, USA, preserve a diversity of fishes and tetrapods in coastal marine to fluvial depositional environments, making this region ideal for investigating the ecology and evolution of Late Devonian vertebrates. A key unresolved issue has been reconstructing the specific aquatic habitats that hosted various vertebrates during this period. Specifically, the salinity of environments spanning fresh to shallow marine water is difficult to discern from sedimentological and paleontological analyses alone. Here, we analyze rare earth elements and yttrium (REY) as well as stable oxygen and sulfur isotope compositions (δ18O, δ34S) in fossil vertebrate bioapatite from late Famennian (ca. 362−360 Ma) strata of the Catskill and Lock Haven formations in the Appalachian Basin, USA, to determine the relative salinity of their aquatic environments. These results confirm the ecological euryhalinity of several taxa (Bothriolepis sp., tristichopterids, and Holoptychius sp.). Our results are the first demonstrating that some early tetrapod species occupied unequivocally freshwater habitats by late Famennian time (ca. 362−360 Ma). Our study shows that integrating sedimentological and paleontological data with combined oxygen and sulfur isotope analysis allows precise tracing of the relative salinity of vertebrate habitats deep in the past.
typdoc
Journal articles
DOI
DOI : 10.1130/B37631.1
Accès au texte intégral et bibtex
https://hal.science/hal-04769137/file/Goedert%20et%20al.pdf BibTex
titre
Quantitative study of microplastic degradation in urban hydrosystems: Comparing in situ environmentally aged microplastics vs. artificially aged materials generated via accelerated photo-oxidation
auteur
Okba Mostefaoui, Zoé Iannuzzi, Diego Lopez, Emmanuel Mignot, Gislain Lipeme Kouyi, Rémy Bayard, Valérie Massardier-Nageotte, Brice Mourier
article
Journal of Hazardous Materials, 2025, 486, pp.137087. ⟨10.1016/j.jhazmat.2024.137087⟩
resume
The degradation of plastic waste is a major research challenge due to the adverse impacts of microplastic weathering on the environment and ecosystems. As a major source of plastic contamination comes from urban hydrosystems, studying MP degradation prior to their environmental dissemination is crucial. Through a combination of field sampling and laboratory experiments, this study provides a thorough statistical degradation comparison analysis between polyethylene in situ environmentally aged microplastics and artificially aged films. In the laboratory, pristine nonadditivated low-density polyethylene films were exposed to controlled ultraviolet (UV) radiation to simulate aging for various durations. Firstly, the study aims to assess the representativeness of controlled UV degradation to mimic urban in-situ MPs. The second goal is to identify polyethylene (PE) degradation characteristics in various environmental matrices such as stormwater, suspended solids and sediment samples from a stormwater detention basin in a large urban area in France. Artificially aged plastics exhibit distinct alterations in physical and chemical properties, corresponding solely to the abiotic degradation observed in-situ. In contrast, environmental particles display notable markers of biotic chemical degradation and hydrolysis. Moreover, the degradation environment varies significantly: it is predominantly abiotic for MPs collected in stormwater samples, while it is largely biotic for MPs collected in sediment and suspended solid samples. Besides, MPs from stormwater and suspended solid samples show a higher degree of hydrolysis degradation. Finally, additional comparisons with common consumer materials, before and after use, show almost no signs of notable degradation compared to the environmentally and artificially aged materials considered in this study.
typdoc
Journal articles
DOI
DOI : 10.1016/j.jhazmat.2024.137087
Accès au texte intégral et bibtex
https://hal.science/hal-04862774/file/1-s2.0-S0304389424036689-main%20%281%29.pdf BibTex
titre
Testing the Impact of Prey Presentation Method on the Feeding Kinematics of Terrestrial and Aquatic Ambystomatidae
auteur
Isabelle Toussaint-Lardé, Vivien Louppe, Morgane Fournier, Julien Clavel, Anthony Herrel, Anne‐claire Fabre
article
Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, In press, ⟨10.1002/jez.70028⟩
resume
In animal behavior, standardizing experimental protocols ensures a rigorous interpretation of the results. However, when working with multisource data, homogeneous standardization is often difficult to attain. This is the case for many studies on feeding kinematics where experimental protocols are carried out using similar but not identical methods. In particular, the impact of the way in which prey is presented remains poorly tested and understood. The aim of this study is to assess whether prey position and the way prey is presented have an impact on the kinematics of prey capture. To do so, we compared the feeding kinematics during the capture of prey presented on the substrate versus prey suspended from tweezers using closely related species of aquatic and terrestrial salamanders. Our results show that changes in prey presentation method directly impact suction feeding kinematics but not terrestrial feeding. In the case of suction feeding, when the prey is suspended by tweezers, mouth opening movements are wider and take more time, the maximum speed and acceleration of mouth opening are higher, and head angle is larger. These changes in kinematics are interpreted as behavioral responses to hydrodynamic changes caused by the different prey presentation methods. This differential sensitivity to prey presentation method between aquatic and terrestrial feeding also highlights differences in the underlying control mechanism: while terrestrial feeding appears to rely on feedback mechanisms, aquatic feeding appears to rely mostly on feedforward mechanisms. As a result, the importance of accounting for prey presentation method is likely context‐dependent, being more relevant when studying feeding systems that rely on feedforward control. Finally, when comparing aquatic and terrestrial feeding, the differences in feeding strategies due to the medium itself outweigh the effects of the prey presentation method.
typdoc
Journal articles
DOI
DOI : 10.1002/jez.70028
Accès au texte intégral et bibtex
https://hal.science/hal-05246907/file/Toussaint-Larde%CC%81%20et%20al.%202025.pdf.pdf BibTex
titre
Transcriptomic data reveal divergent paths of chitinase evolution underlying dietary convergence in anteaters and pangolins
auteur
Rémi Allio, Sophie Teullet, Dave Lutgen, Amandine Magdeleine, Rachid Koual, Marie-Ka Tilak, Benoît de Thoisy, Christopher A Emerling, Tristan Lefébure, Frédéric Delsuc
article
Genome Biology and Evolution, 2025, 17 (2), pp.evaf002. ⟨10.1093/gbe/evaf002⟩
resume
Ant-eating mammals represent a textbook example of convergent evolution. Among them, anteaters and pangolins exhibit the most extreme convergent phenotypes with complete tooth loss, elongated skulls, protruding tongues, and hypertrophied salivary glands producing large amounts of saliva. However, comparative genomic analyses have shown that anteaters and pangolins differ in their chitinase acidic gene (CHIA) repertoires, which potentially degrade the chitinous exoskeletons of ingested ants and termites. While the southern tamandua (Tamandua tetradactyla) harbors four functional CHIA paralogs (CHIA1-4), Asian pangolins (Manis spp.) have only one functional paralog (CHIA5). Here, we performed a comparative transcriptomic analysis of salivary glands in 33 placental species, including 16 novel transcriptomes from ant-eating species and close relatives. Our results suggest that salivary glands play an important role in adaptation to an insect-based diet, as expression of different CHIA paralogs is observed in insectivorous species. Furthermore, convergently-evolved pangolins and anteaters express different chitinases in their digestive tracts. In the Malayan pangolin, CHIA5 is overexpressed in all major digestive organs, whereas in the southern tamandua, all four functional paralogs are expressed, at very high levels for CHIA1 and CHIA2 in the pancreas, and for CHIA3 and CHIA4 in the salivary glands, stomach, liver, and pancreas. Overall, our results demonstrate that divergent molecular mechanisms within the chitinase acidic gene family underlie convergent adaptation to the ant-eating diet in pangolins and anteaters. This study highlights the role of historical contingency and molecular tinkering of the chitin-digestive enzyme toolkit in this classic example of convergent evolution.
typdoc
Journal articles
DOI
DOI : 10.1093/gbe/evaf002
Accès au texte intégral et bibtex
https://hal.science/hal-04890530/file/evaf002.pdf BibTex
titre
Complete metamorphosis promotes morphological and functional diversity in Caudata
auteur
Vivien Louppe, Kevin Le Verger, Julien Clavel, Gabriel Ferreira, Christina Kyriakouli, Edward Stanley, Emily Watt, Carla Bardua, Celeste Pérez-Ben, Nadia Fröbisch, Vivien Bothe, Renaud Boistel, Gheylen Daghfous, Anjali Goswami, Anne‐claire Fabre
article
Functional Ecology, 2025, 39, pp.1732-1747. ⟨10.1111/1365-2435.70044⟩
resume
Metamorphosis, a common and spectacular developmental process, involves major phenotypic changes often linked to environmental transitions. Understanding how these changes affect morphological evolution is crucial for examining metamorphosis's evolutionary impacts. In this study, we analysed the role of metamorphosis and life cycle variation on the morphological evolution of the mandible in Caudata (salamanders and newts), a clade that exhibits a great diversity of life cycles and ecologies. We focused on the mandible, a key component of the masticatory apparatus, to investigate how life cycle variation may influence the diversification of feeding modes. Using 3D geometric morphometrics on 317 extant species of Caudata, we found that both life cycle and size influence mandible shape, with complex interactions between these factors. The morphology of the mandibular bones evolved more independently in species undergoing complete metamorphosis compared to those with partial metamorphosis, likely facilitating feeding diversification in terrestrial adults. On the other hand, high morphological integration in species undergoing partial metamorphosis could promote the rapid evolution of traits, resulting in the differentiation of more disparate morphologies, potentially aiding paedomorphic species in adapting to challenging environments. This study highlights the interplay between metamorphosis and the environment in shaping morphological evolution among species and provides new insights into the role of heterochrony in the morphological diversification of organisms
typdoc
Journal articles
DOI
DOI : 10.1111/1365-2435.70044
Accès au texte intégral et bibtex
https://hal.science/hal-05065961/file/Louppe%20et%20al.%202025.pdf BibTex
titre
Flatfish (Pleuronectidae) on the menu in 16 th century Abbeville (France). The contribution of osteometrics and stable isotopes to species and fishing origin identification
auteur
Elise Dufour, Benoit Clavel, Olivier Tombret, Laurent Simon
article
Cybium : Revue Internationale d’Ichtyologie, 2025, 49 (1), pp.5-28. ⟨10.26028/cybium/2025-006⟩
resume
Pleuronectidae (flatfish) are not always identifiable to the species level on the basis of isolated bones found in archaeological assemblages, and one of the most targeted species in northwestern Europe, flounder (Platichthys flesus), has an extremely large plasticity in habitat use. These issues limit the interpretation of the presence of flatfish bones with regard to fishing ground exploitation and fish trade in the past. This study aims to infer the fishing grounds of flatfish consumed at the site of Abbeville Chaussée du Bois, in northwestern France, dated to the 16th century, based on the analysis of examples of two unpaired bones, the first anal-fin pterygiophore or “os anale” and the urohyal. The city of Abbeville was an important port during Middle Ages and the Early Modern period. We used an integrated approach combining osteology, osteometrics (n = 84), and stable isotope analysis of bone collagen (n = 31). We were able to confirm the presence of both flounder and plaice (Pleuronectes platessa). We estimated their size and age at capture thanks to metric models that we developed for modern plaice (n = 34) and flounder (n = 55) from in- and offshore environments in the Somme estuary. The presence of only adult fish remains at the site and the ethology of the two species exclude exploitation of only the immediate vicinity of the city, i.e., the River Somme itself or the very non-saline part of the estuary close to the river outlet. Although the δ13C and δ15N values of the flounder and plaice from the site partially overlap, the two groups present distinctive δ13C and δ15N values and bi-isotope variability. Their isotope signatures were compared with those of archaeological marine (n = 14) and freshwater (n = 26) fish remains used as references. The flatfish identified from the site had spent time living in habitats ranging from marine to brackish or even freshwater. Our combined approach suggests the contemporaneous exploitation of several fishing grounds or alternatively marine waters at spawning time to provide the menu served at the site. Our approach appears a promising means to explore the trade in flatfish inland during historical times.
typdoc
Journal articles
DOI
DOI : 10.26028/cybium/2025-006
Accès au texte intégral et bibtex
https://hal.science/hal-05033426/file/Dufour%20et%20al._Cybium_2025.pdf BibTex
titre
Almost forgotten fossil wood points to the existence of an overlooked group of Mesozoic Gondwanan gymnosperms
auteur
Marc Philippe, Mike Pole, Pierre Maurizot, Lilian Alizert, Damien Gendry
article
Review of Palaeobotany and Palynology, 2025, 341, pp.105383. ⟨10.1016/j.revpalbo.2025.105383⟩
typdoc
Journal articles
DOI
DOI : 10.1016/j.revpalbo.2025.105383
Accès au texte intégral et bibtex
https://hal.science/hal-05104738/file/philippe-2025.pdf BibTex
titre
Metamorphosis Reverses the Behavioral Phenotype in Rana arvalis Along a Latitudinal Gradient
auteur
Maria Cortazar‐chinarro, Alberto Corral‐lopez, Deike U Lüdtke, Fredrik Tegnér, Emilien Luquet, Anssi Laurila
article
Ecology and Evolution, 2025, 15 (8:e71945), ⟨10.1002/ece3.71945⟩
resume
Understanding how demographic processes and environmental conditions shape behavioral variation across populations is pivotal in evolutionary ecology. However, the role that such processes play in the link between behavior and life‐history traits across populations remains largely unclear. The moor frog ( Rana arvalis ) has colonized Sweden via two distinct routes: from the south via Denmark and from the north via Finland. We collected R. arvalis eggs from multiple populations along a 1,700 km latitudinal gradient across Northern Europe and raised tadpoles in a common garden experiment. We assessed developmental growth and proactivity levels in ca. 300 individuals at two key stages of anuran larval development: tadpoles (Gosner stage 32) and froglets (Gosner stage 46). We found strong behavioral differences along the latitudinal gradient and between developmental stages. Tadpoles from northernmost populations were bolder (shorter time to leave a shelter) and showed higher activity levels in an open field test compared to those from southern populations. However, these behavioral patterns reversed at the froglet stage, individuals from northern populations showing reduced proactivity compared to those from southern populations. Further analyses indicated significant associations between developmental growth and boldness, with contrasting patterns across developmental stages and colonization routes. These findings support recent revisitations of the pace‐of‐life syndrome theory, emphasizing a decoupling of correlations between behavior and life‐history traits across ontogeny, likely reflecting adaptive responses to divergent ecological and demographic constraints along the latitudinal gradient rather than a single fast‐slow continuum.
typdoc
Journal articles
DOI
DOI : 10.1002/ece3.71945
Accès au texte intégral et bibtex
https://hal.science/hal-05269531/file/Cortazar-Chinarro%20et%20al%202025%20Ecology%20and%20Evolution.pdf BibTex
titre
Diatom assemblages colonizing floating photovoltaic floaters are distinct from those in benthic and pelagic compartments of gravel pit lakes
auteur
Regina Lucia Guimarães Nobre, Julien Cucherousset, Stéphanie Boulêtreau, Frédéric Azémar, Nathalie Parthuisot, Fanny Colas, Paul Millet, Loïc Tudesque
article
Knowledge and Management of Aquatic Ecosystems, 2025, Ecological, evolutionary and environmental implications of floating photovoltaics, 426, pp.10. ⟨10.1051/kmae/2025006⟩
resume
The development of novel renewable energy technologies, such as floating photovoltaics (FPVs), is expanding, but their environmental consequences remain understudied. FPVs physically alter freshwater ecosystems by limiting light and wind penetration at the lake surface, while providing new substrates for biofilm development, including diatoms. Diatoms are essential to primary production and carbon cycling in aquatic systems, however, the composition of diatom assemblages on FPV structures remains unexplored. This study aimed to characterise the diatom assemblages colonising FPV floaters and compare them with those in the pelagic and benthic compartments of gravel pit lakes. Results showed significantly lower taxonomic richness and diversity on FPV floaters, followed by pelagic assemblages, with the highest values observed in benthic habitats. Community composition also differed significantly between the three compartments. Community composition also differed significantly across all habitats, but its dominance was particularly pronounced on FPV floaters (72%), compared to 54% and 32% in the benthic and pelagic compartments, respectively. As a low-profile, disturbance-tolerant taxon, Achnanthidium may thrive in low-light conditions created by FPV shading. It can also serve as a good water quality indicator, while baseline studies are needed to assess whether its dominance on FPVs reflects positive conditions for gravel pit lakes. By creating novel artificial habitats in the pelagic zone, FPVs can modify the patterns of primary production and pelagic-benthic coupling that remain to be investigated.
typdoc
Journal articles
DOI
DOI : 10.1051/kmae/2025006
Accès au texte intégral et bibtex
https://hal.science/hal-05075544/file/Nobre%20et%20al%202025.pdf BibTex
titre
Advancing subterranean conservation through Global Research on eDNA in Groundwaters (GReG)
auteur
Mattia Saccò, Abdul Elmasri, Mahima Tawal, Roman Alther, Florian Altermatt, Alejandro Martínez, Stefano Mammola, Maja Zagmajster, Pablo Saenz-Agudelo, Miwa Takahashi, Jake Thornhill, Aude Andouche, Mariella Baratti, Muhammad Bilal, Helena Bilandžija, Rossano Bolpagni, Sarah Boulamail, Fulvio Celico, Claire A Chauveau, Efrain Chavez, Olivier Collard, Steven J B Cooper, Marjorie Couton, Francesco Cozzoli, Kat Dawkins, Tiziana Di Lorenzo, Ximena Dubinsky, Hans Jürgen Hahn, Jean-François Flot, Fabien Glatting, Christian Griebler, Simone Guareschi, Tamar Guy-Haim, Shane Herbert, Grant Hose, William F Humphreys, Benjamin Hutchins, Sanda Iepure, Tim Johns, Clemens Karwautz, Dominik Kirschner, Oren Kolodny, Marjeta Konec, Raoul Manenti, Tarik Meziane, Nataša Mori, Elena Pazhenkova, Maxine P Piggott, Alejandra Prieto-Davó, Zoé Raphalen, Hannah Rau, Ana Sofia Reboleira, Hans Recknagel, Anne Robertson, Coline Royaux, Benjamin Schwartz, Klaus Schwenk, Nuno Simoes, David Stanković, Fabio Stoch, Joe D Taylor, Mieke van der Heyde, Živa Vehovar, Valerija Zakšek, Nicole E White, Morten E Allentoft, Paul Nevill, Kathryn L Korbel, Michelle T Guzik
article
Subterranean Biology, 2025, 53, pp.31-40. ⟨10.3897/subtbiol.53.165710⟩
typdoc
Journal articles
DOI
DOI : 10.3897/subtbiol.53.165710
Accès au texte intégral et bibtex
https://hal.science/hal-05272878/file/Sacco%CC%80%20et%20al.%202025.pdf BibTex
titre
One mother for two species via obligate cross-species cloning in ants
auteur
Y. Juvé, C. Lutrat, A. Ha, A. Weyna, E. Lauroua, A. C. Afonso Silva, C. Roux, E. Schifani, C. Galkowski, C. Lebas, R. Allio, I. Stoyanov, N. Galtier, B. C. Schlick-Steiner, F. M. Steiner, D. Baas, B. Kaufmann, J. Romiguier
article
Nature, 2025, 646 (8084), pp.372-377. ⟨10.1038/s41586-025-09425-w⟩
resume
Living organisms are assumed to produce same-species offspring. Here, we report a shift from this norm in Messor ibericus , an ant that lays individuals from two distinct species. In this life cycle, females must clone males of another species because they require their sperm to produce the worker caste. As a result, males from the same mother exhibit distinct genomes and morphologies, as they belong to species that diverged over 5 million years ago. The evolutionary history of this system appears as sexual parasitism that evolved into a natural case of cross-species cloning, resulting in the maintenance of a male-only lineage cloned through distinct species’ ova. We term females exhibiting this reproductive mode as xenoparous, meaning they give birth to other species as part of their life cycle.
typdoc
Journal articles
DOI
DOI : 10.1038/s41586-025-09425-w
Accès au texte intégral et bibtex
https://hal.science/hal-05252088/file/Juve%20et%20al%202025.pdf BibTex
titre
Hydropeaking and Channelization Threaten Young‐of‐the‐Year Fish—The Case of the Chub ( Squalius Cephalus L.) in the Rhône River
auteur
Basile Cousin, Sylvain Dolédec, Emilien Luquet, Jean‐michel Olivier
article
River Research and Applications, 2025, 41, pp.1959-1969. ⟨10.1002/rra.70025⟩
resume
Hydrological and geomorphological alterations of rivers disrupt the natural spatial and temporal dynamics of aquatic species habitats, which constrains the life cycle of aquatic fauna. While many studies have focused on the impact of these alterations on the adult stages of fish species, few studies have examined their effects on larval settlement and the persistence of young‐of‐the‐year (YOY) in later developmental stages, the survival of which is critical for overall population dynamics. In this study, we collected samples from different developmental stages (larvae, postlarvae, juveniles) of chubs ( Squalius cephalus L.) every 15 days for 2 years in three reaches of the Rhône River and compared the results in the context of different hydrological (i.e., hydropeaking) and geomorphological (i.e., channelization) conditions. We found that higher abundances of young chubs (especially those in the larval and postlarval stages) were related to a greater diversity of floodplain channels, even in the case of hydrological alterations. However, hydropeaking generally induced a decrease in larval settlement success during extreme episodes. Consequently, there were low abundances of individuals in young developmental stages in the reach affected by a combination of geomorphological and hydrological alterations. In addition, the presence of diverse floodplain channels was highly important for fish movement across different habitats during development. Thus, our study highlights the critical role of floodplain channel diversity during the first year of fish development and its importance in buffering the deleterious effects of hydrological alterations.
typdoc
Journal articles
DOI
DOI : 10.1002/rra.70025
Accès au texte intégral et bibtex
https://hal.science/hal-05245084/file/Cousin%20et%20al%202025%2C%20preprint.pdf BibTex
titre
Description and use of Schellencandona rhodanensis sp. n. (Ostracoda, Candoninae) to locate groundwater upwelling zones in rivers and wetlands
auteur
Colin Issartel, Pierre Marmonier
article
International Journal of Limnology, 2025, 61 (2), pp.1-13. ⟨10.1051/limn/2025001⟩
resume
Schellencandonarhodanensissp. n. is a stygobite species collected in the interstitial habitat of the Rhône River and its tributaries. It can be distinguish of S. triquetra by its morphological and ecological characteristics and can be used as an indicator of high sediments stability and groundwater upwelling zones.
typdoc
Journal articles
DOI
DOI : 10.1051/limn/2025001
Accès au texte intégral et bibtex
https://hal.science/hal-04934201/file/limn240040.pdf BibTex
titre
A novel method to assess the infiltration and filtration functions of urban soils
auteur
Gersende Fernandes, Simone Di Prima, Gislain Lipeme Kouyi, Tim D Fletcher, Daniel Donze, Robert James, Saint‐martin Saint-Louis, Matteo Martini, Claudia Nicklason, Laurent Lassabatere
article
Vadose Zone Journal, 2025, 24 (6), ⟨10.1002/vzj2.70050⟩
resume
Urban areas are increasingly under pressure due to rapid expansion and extreme rainfall events driven by climate change. Rather than relying solely on pipes to regulate stormwater, new management systems promote direct infiltration of water and pollutants into the soil. Soils fulfill multiple functions, including water infiltration and pollutant filtration. Urban soils, however, are often highly heterogeneous; the presence of macropores can accelerate water flow while reducing pollutant retention. Yet, infiltration and filtration are typically assessed using surface measurements and soil‐destructive methods, which fail to capture the complexity of water and pollutant transport pathways in the subsurface. In this study, we present a prototype of a large‐ring infiltrometer coupled with a ground‐penetrating radar (GPR) to simultaneously monitor water and nanotracers movement in the subsurface. This provides a more comprehensive characterization of both infiltration and filtration functions. Superparamagnetic iron oxide nanoparticles (SPIONs) were chosen as nanotracers due to their nontoxicity, small size, and advantageous electromagnetic properties. Although distinguishing between subsurface zones imbibed with water and those containing SPIONs was challenging, GPR imaging revealed distinct spatial patterns and temporal dynamics even under identical infiltration conditions. Comparative analyses with water and solute transport models further elucidated the underlying subsurface processes. Typologies of infiltration and filtration patterns, linked to soil heterogeneity, are presented. Our results emphasize the need for a more comprehensive characterization of infiltration and filtration functions to improve flood risk assessment and evaluations of groundwater pollution threats.
typdoc
Journal articles
DOI
DOI : 10.1002/vzj2.70050
Accès au texte intégral et bibtex
https://hal.science/hal-05377115/file/Vadose%20Zone%20Journal%20-%202025%20-%20Fernandes%20-%20A%20novel%20method%20to%20assess%20the%20infiltration%20and%20filtration%20functions%20of%20urban%20soils.pdf BibTex
titre
New ichthyofaunal microfossils from the Late Permian at Chaotian, Sichuan, Southwest China
auteur
Li Jiachun, Sun Zuoyu, Gilles Cuny, Zhao Siyan, Yao Mingtao, Song Lijun
article
Swiss Journal of Palaeontology, 2025, 144 (1), pp.29. ⟨10.1186/s13358-025-00377-2⟩
resume
Abstract Chondrichthyan remains are reported for the first time from the Late Permian of the Sichuan Province, Southwest China. They include four tooth genera, comprising Eugeneodontiformes (aff. Agassizodus sp. and Eugeneodontiformes indet.) and Euselachii ( Favusodus cf. orientalis and Neoselachii gen. et sp. indet.), as well as two morphotypes of dermal denticles. Eugeneodontiforms and euselachians are represented by durophagous sharks, which are the most common component of the described assemblage. Aff. Agassizodus sp. probably represents a new helicoprionid shark that features a trilobate tooth root with two distinct lingual foramina. The Neoselachii gen. et sp. indet. probably also represents a new taxon and could be the first Palaeozoic neoselachian shark with a holaulacorhize root vascularization. Moreover, high-resolution micro-computed tomography (micro-CT) images were used to investigate the 3D structural characteristics of their dental histology. The aff. Agassizodus sp. displays isolated branching pulp canals connecting with pulp cavities, whereas the Neoselachii gen. et sp. indet. shows networked pulp canals without a pulp cavity.
typdoc
Journal articles
DOI
DOI : 10.1186/s13358-025-00377-2
Accès au texte intégral et bibtex
https://hal.science/hal-05131538/file/JIACHUN%20et%20al.%202025.pdf BibTex
titre
Mummified Palaeogene Spirostreptida and Julida (Arthropoda, Diplopoda) from southern France
auteur
Jules Charrondière, Mickaël Lhéritier, Bastien Mennecart, Dmitry Kopylov, Jérôme Adrien, Georg Schulz, Vincent Perrier, Gilles Escarguel
article
Papers in Palaeontology, 2025, 11 (5), pp.e70035. ⟨10.1002/spp2.70035⟩
resume
Using three‐dimensional digital reconstructions, we revise the most complete Palaeogene millipede species, Protosilvestria sculpta , based on Quercy Phosphorite specimens (southern France) and an additional specimen from the latest Oligocene of the Montpellier region (southern France). Other specimens attributed to the family Blaniulidae are also described. The exceptional preservation of fine details on the body parts, such as the gnathochilarium, enables us to assign P. sculpta to the Order Spirostreptida and the other specimens to Order Julida. Comparisons with Recent cambalidean species, and observations of features such as the low number of ommatidia in the eyes and the presence of specimens in caves, point towards a cave‐dwelling lifestyle for P. sculpta . Their presence in Europe during the Palaeogene may be linked to different dispersal scenarios, before and after the Grande Coupure event at the Eocene–Oligocene transition.
typdoc
Journal articles
DOI
DOI : 10.1002/spp2.70035
Accès au texte intégral et bibtex
https://hal.science/hal-05268754/file/Charrondie%CC%80re%20et%20al%202025%20--%20Papers%20in%20Palaeontology%20%28prep%20rint%29.pdf BibTex
titre
Lateglacial and Holocene palaeoenvironmental evolution of alkaline peatlands in the Somme valley (France): between climate and anthropogenic forcing
auteur
Chloe Garcia, Boris Brasseur, Jeremy Bacon, Segolene Saulnier-Copard, Caroline Gauthier, Lou‐anne Mathieu, Agnes Gauthier, Dierk Michaelis, Fatima Mokadem, Pierre Antoine
article
Boreas, 2025, 54, pp.34-59. ⟨10.1111/bor.12676⟩
resume
As in most chalk river valleys in NW Europe, the sedimentary fill of the Somme valley is mainly composed of fluviogenic alkaline peat. The site of Morcourt exhibits a thick and well‐preserved fluvial sequence (10 m, including 6 m of peat). This sequence provides the framework for reconstructing fluvial and palaeoenvironmental dynamics from the end of the Upper Weichselian Pleniglacial (~20 000 cal. a BP) to the High Middle Ages (~700 cal. a BP). The palaeoenvironmental reconstruction is based on a high‐resolution stratigraphic study of 60 transect cores, 36 radiocarbon dates and sedimentological, geochemical, pollen and plant macrofossil analyses. There are three main phases in the development of the valley floor: (i) after the incision of the abandoned Pleniglacial braided river channels, a first generation of localized peat developed during the Bølling and the Allerød interstadial (<1 m thick); (ii) at the beginning of the Holocene, a peat formation phase began in the deepest parts of the valley and then spread over the valley floor by the end of the Middle Holocene (~4700 cal. a BP), with the limited runoff shifting to a small lateral channel; and (iii) at the transition to the Late Holocene, environmental changes, driven by the intensification of human activities and perhaps accentuated by climatic modifications, caused the incision of the peat system as a result of the formation of a channel. This channel drained the valley, and then mixed a detrital load into the peat. By the Low Middle Ages, the system had been altered to such an extent that the peat was completely covered by organic silty alluvium. The water table was lower, which definitively inhibited peat formation. The Morcourt sedimentary record (thickness and continuity) and the resumption of turfigenesis during the Late Holocene are remarkable in NW Europe, making this site a model of continuous morpho‐fluvial evolution since the Lateglacial.
typdoc
Journal articles
DOI
DOI : 10.1111/bor.12676
Accès au texte intégral et bibtex
https://u-picardie.hal.science/hal-04696561/file/Garcia%20et%20al%202025%20-%20Lateglacial%20and%20Holocene%20palaeoenvironmental%20evolution%20of%20alkaline%20peatlands%20in%20the%20Somme%20valley.pdf BibTex
titre
Zooming in the plastisphere: the ecological interface for phytoplankton–plastic interactions in aquatic ecosystems
auteur
Veronica Nava, Jaffer Dar, Vanessa de Santis, Lena Fehlinger, Julia Pasqualini, Oloyede Adekolurejo, Bryan Burri, Marco Cabrerizo, Teofana Chonova, Mathilde Cour, Flavia Dory, Annemieke Drost, Aida Figler, Giulia Gionchetta, Dariusz Halabowski, Daniel Harvey, Víctor Manzanares-Vázquez, Benjamin Misteli, Laureen Mori-Bazzano, Valentin Moser, Federica Rotta, Bianca Schmid-Paech, Camille Touchet, Julia Gostyńska
article
Biological Reviews, 2025, 100, pp.834-854. ⟨10.1111/brv.13164⟩
resume
Phytoplankton is an essential resource in aquatic ecosystems, situated at the base of aquatic food webs. Plastic pollution can impact these organisms, potentially affecting the functioning of aquatic ecosystems. The interaction between plastics and phytoplankton is multifaceted: while microplastics can exert toxic effects on phytoplankton, plastics can also act as a substrate for colonisation. By reviewing the existing literature, this study aims to address pivotal questions concerning the intricate interplay among plastics and phytoplankton/phytobenthos and analyse impacts on fundamental ecosystem processes (e.g. primary production, nutrient cycling). This investigation spans both marine and freshwater ecosystems, examining diverse organisational levels from subcellular processes to entire ecosystems. The diverse chemical composition of plastics, along with their variable properties and role in forming the “plastisphere”, underscores the complexity of their influences on aquatic environments. Morphological changes, alterations in metabolic processes, defence and stress responses, including homoaggregation and extracellular polysaccharide biosynthesis, represent adaptive strategies employed by phytoplankton to cope with plastic‐induced stress. Plastics also serve as potential habitats for harmful algae and invasive species, thereby influencing biodiversity and environmental conditions. Processes affected by phytoplankton–plastic interaction can have cascading effects throughout the aquatic food web via altered bottom‐up and top‐down processes. This review emphasises that our understanding of how these multiple interactions compare in impact on natural processes is far from complete, and uncertainty persists regarding whether they drive significant alterations in ecological variables. A lack of comprehensive investigation poses a risk of overlooking fundamental aspects in addressing the environmental challenges associated with widespread plastic pollution.
typdoc
Journal articles
DOI
DOI : 10.1111/brv.13164
Accès au texte intégral et bibtex
https://univ-lyon1.hal.science/hal-04823445/file/Nava%20et%20al.%20-%20Zooming%20in%20the%20plastisphere%20the%20ecological%20interf.pdf BibTex
titre
Unveiling Structure of Tropical Estuarine Communities Through eDNA and Implications for Biomonitoring
auteur
Johan Pansu, Christine Chivas, Geoffrey Carlin, Jacob Gruythuysen, Marcelo Merten Cruz, Rachael A Smith, Frédérique Viard, Stuart L Simpson, Anthony A Chariton
article
Environmental DNA, 2025, 7 (4), pp.e70180. ⟨10.1002/edn3.70180⟩
resume
Tropical estuaries are hyper‐diverse ecosystems, hosting essential habitats for freshwater, euryhaline, and marine life. Understanding how biological communities are distributed in these systems has long been a challenge because of their inherent dynamic nature and the diversity of interacting natural pressures and anthropogenic stressors they are subjected to. In addition, most studies focus on a single taxonomic group, hindering a comprehensive understanding of the interactive effects of natural and human‐driven environmental variations on the different components of tropical estuarian biodiversity. In this study, we used environmental DNA (eDNA) metabarcoding to examine the structure of multi‐taxonomic communities, from diatoms to fish, and their relationships with environmental drivers in three differentially impacted locations facing the Great Barrier Reef in Central Queensland (Australia). We first demonstrated that eDNA signals from sediment and water matrices provide complementary information and that both should be monitored for a more holistic understanding of community trajectories in anthropogenically impacted aquatic environments. We also observed that, independently of the taxonomic group considered, communities were primarily structured by the ecological conditions of the estuary. A within‐estuary differentiation along an upstream–downstream gradient was detected but only for small‐bodied organisms, which further adds credence to eDNA approaches as an ecologically relevant tool for monitoring fine‐scale biodiversity patterns even in profoundly dynamic environments. Finally, the different communities exhibited contrasting response patterns, in terms of diversity, composition, and uniqueness, to the anthropogenic gradient. Hence, our findings emphasize the need for multi‐taxonomic assessments, for which eDNA is well suited, to better understand the impacts of multiple stressors on biodiversity and thereby assist decision makers in the protection and management of tropical estuaries.
typdoc
Journal articles
DOI
DOI : 10.1002/edn3.70180
Accès au texte intégral et bibtex
https://hal.science/hal-05245293/file/Pansu%20et%20al.%202025.pdf BibTex
titre
Record of trace organic contaminants in a river sediment core: A fingerprint of regulatory changes?
auteur
Thomas Thiebault, Pierre Labadie, Anthony Foucher, Jean-Sébastien Barbier, Fabrice Alliot, Thibaut Soubise, Patrick Pardon, Hélène Budzinski, Elie Dhivert, Olivier Evrard, Sophie Ayrault
article
Journal of Environmental Management, 2025, 389, pp.126276. ⟨10.1016/j.jenvman.2025.126276⟩
resume
This study reconstructs the historical deposition of 76 trace organic contaminants (TrOCs), comprising pharmaceuticals, pesticides, and per-and polyfluoroalkyl substances (PFAS), in a dated sediment core taken from a secondary channel of the Seine River downstream of the Paris conurbation. Sediment chronology, established through $^{210}$Pb and $^{137}$Cs radionuclide depth activities, spans the period from 1943 to 2022, providing a long-term record of anthropogenic influence on fluvial contamination. The vertical profiles of pharmaceutical residues reveal temporal patterns closely aligned with their respective dates of market introduction, followed by increasing concentrations and subsequent declines. Maximum TrOC sedimentary concentrations were observed during the 1980s, coinciding with incomplete wastewater collection coverage. A sharp decrease in concentrations post-2000 reflects significant improvements in wastewater collection and treatment infrastructure. For pesticides, sedimentary trends also correlate with usage history and regulatory actions, with detectable declines frequently preceding official bans, suggesting the influence of progressive restrictions or shifts in agricultural practices. In contrast, PFAS profiles display more complex dynamics: legacy compounds such as perfluorooctanesulfonic acid and its precursors peaked in the early 2000s, after which their decline was offset by the increasing presence of alternative substances (e.g., fluorotelomersulfonic acids, betaines), indicative of industrial substitution. Overall, sediment composition had a secondary influence on TrOC profiles, with external factors such as regulatory decisions and technological developments in wastewater treatment playing predominant roles. These findings underscore the utility of collecting and analyzing sedimentary archives for assessing the long-term effectiveness of environmental policies and for identifying persistent and emerging contaminants in riverine systems.
typdoc
Journal articles
DOI
DOI : 10.1016/j.jenvman.2025.126276
Accès au texte intégral et bibtex
https://hal.science/hal-05119634/file/1-s2.0-S0301479725022522-main.pdf BibTex
titre
Living together in a context of plant invasion: the example of the plant communities at the Iles Kerguelen
auteur
Pauline Eymar-Dauphin, David Renault, Manon Bounous, Kévin Le Falher, Clémence Pillard, Anne-Kristel Bittebiere
article
npj Biodiversity, 2025, 4 (1), pp.43. ⟨10.1038/s44185-025-00112-7⟩
resume
With invasions, functionally differing plant species meet. The traits of native and alien species should then be modified, affecting coexistence. We studied trait variation in four native and five alien plant species on the Iles Kerguelen along gradients of alien abundance. We measured traits related to competition and stress tolerance, and compared them along the gradients, their mean, variability, and range, at the species and the community levels, through univariate (analyses of variance) and multi-traits (hypervolume) approaches. Native and alien species occupied overlapping trait spaces, mostly because aliens are more variable than natives. Along the gradients, native and alien species showed similar mean strategies, with no variation in their trait range or variance. At the community level, a shift from convergence to divergence along the gradients was observed in most traits. Our results highlight that not only the response of aliens but also of native species should be studied under invasions.
typdoc
Journal articles
DOI
DOI : 10.1038/s44185-025-00112-7
Accès au texte intégral et bibtex
https://hal.science/hal-05421659/file/s44185-025-00112-7.pdf BibTex
titre
Associations between dietary diversity and self-rated health in a transverse study of four local food systems (French Guiana, Guadeloupe, Portugal and Senegal)
auteur
Michael Rapinski, Richard Raymond, Damien Davy, Jean-Philippe Bedell, Abdou Ka, Jean Lubszynski, Pascal Jean Lopez, Eduardo Ferreira da Silva, Nathalie El Deghel, Enguerran Macia, Priscilla Duboz
article
BMC Public Health, 2025, 25 (1), pp.823. ⟨10.1186/s12889-025-21872-8⟩
resume
Background: The nutrition transition is linked to the double-burden of malnutrition worldwide, and its impact on the quality of life is considerable. The dietary diversity score and self-rated health are two proxies that have been used to assess, for the former, nutrient adequacy and overall diet quality, and for the latter, health from a sociological, epidemiological and economical lens. The general aim of this study was to evaluate the relation between food and subjective health, and to test the hypothesis that greater dietary diversity is positively associated with a better perception of health. Methods: A transverse comparison of foods consumed in four highly contrasted local socio-ecosystems (i.e., two French oversea territories: French Guiana, Guadeloupe, Portugal and Senegal) was conducted using 24-hour dietary recalls. Dietary diversity was calculated using 18 food groups based on classifications provided by WHO and FAO. Binary logistic regressions were used to assess the relationship between dietary diversity scores and answers to the question assessing self-rated health. Results Overall, 465 individuals, 18 years and older, from Senegal, Guiana, Guadeloupe and Portugal were interviewed using a 24-hour dietary recall. Participants were selected via a combination of non-probability sampling methods. The mean dietary diversity score for all regions combined was 9.22. Over one-third of participants reported their health as ‘good’ (39.8%), whereas ‘bad’ and ‘excellent’ health were the least reported, at 6.45% and 9.03%, respectively. Multiple binary logistic regression notably found that dietary diversity score (OR = 0.88, 95% CI [0.79, 0.99], p = 0.010) and at-home meal preparation, specifically with the reference category ‘all the time’ compared to ‘never’ (OR = 3.31, 95% CI [1.55, 7.07], p = 0.002) were statistically significant predictors of self-rated health (i.e., declaring overall bad health). Conclusions: This study demonstrates a positive association between dietary diversity and self-rated health across distinct cultural contexts. The findings reinforce the importance of diverse diets for subjective well-being, regardless of differences in food systems. Public health messaging should continue to promote dietary diversity and home-cooked meals as effective strategies for improving health. Self-rated health could serve as a useful tool for quickly assessing the outcomes of nutrition therapy.
typdoc
Journal articles
DOI
DOI : 10.1186/s12889-025-21872-8
Accès au texte intégral et bibtex
https://hal.science/hal-04973042/file/Associations_between_dietary_diversity_and_self-ra.pdf BibTex
titre
Evenness peaks in fire-resilient vegetation preceded ecosystem shifts in East Africa
auteur
Julie Aleman, Yannick Garcin, Boris Vannière, Antoine Vullien, David Williamson, Christopher Carcaillet
article
Environmental Research Letters, 2025, 20 (7), pp.074010. ⟨10.1088/1748-9326/add8a4⟩
resume
Fire is often assumed to be a key driver in shaping tropical vegetation structure and composition in grass-dominated ecosystems, while forests experience infrequent but impactful fires that influence ecosystem resilience. Although short-term interactions between fire and vegetation are well-documented, long-term dynamics remain underexplored. This study examines fire regimes, vegetation dynamics, and its biodiversity over the past 17 000 years in southwest Tanzania, using sedimentary charcoal and pollen. Major ecological transformations of vegetation and fire regimes were recorded, with vegetation changes consistently preceded shifts in fire regimes. Increased grass pollen correlated with more frequent or larger fires, while high tree cover in Miombo woodland reduced fire activity. Interestingly, pollen evenness was a precursor to major ecological transformations as peaks preceded changes in ecosystem states. Changes in precipitation and moisture seems the major top–down drivers of these changes in vegetation and fire. Fire regimes were indirectly controlled by water availability, and vegetation exhibited resilience to fire at centennial timescales before reaching ecosystem shifts at 12 400 and 1700 cal BP. Our results emphasize the critical role of tree and grass cover in shaping fire regimes and highlight the interplay between climate, vegetation structure, and fire in East African ecosystems.
typdoc
Journal articles
DOI
DOI : 10.1088/1748-9326/add8a4
Accès au texte intégral et bibtex
https://hal.science/hal-05110069/file/Aleman%20et%20al%202025.pdf BibTex
titre
Unravelling knotweed clonal control of soil microbial activities related to the nitrogen cycle through plant growth phases and ramet positions within the patch
auteur
Cédric Béraud, Florence Piola, Jonathan Gervaix, Christelle Boisselet, Charline Creuze Des Chatelliers, Pauline Defour, Abigaïl Delort, Elisabeth Derollez, Lola Dumortier, Alessandro Florio, Léo Rasse, Félix Vallier, Amélie Cantarel
article
Plant and Soil, 2025, 513, pp.453-471. ⟨10.1007/s11104-024-07190-9⟩
resume
Background and aims Knotweeds are known to influence microbial processes. This study aimed to unravel the clonal control of microbial nitrogen cycle activities by established knotweed patches, as function of plant growth phases and ramet positions within the patch, all according to six different soils. Methods At six sites, we measured N-microbial activities (free-living nitrogen fixation, nitrification, and denitrification, substrate-induced respiration), soil N mineral forms, moisture and pH across five plant growth phases and at two ramet positions within the patch (centre and front). The sites were categorized as having High, Medium or Low soil functioning based on (a)biotic parameters (nitrification, denitrification, soil moisture, and pH). Results The influence of the patch centre on N-microbial activities varied with soil functioning during the plant growth phases. Nitrification and N fixation increased in Low functioning soils but decreased or remained unchanged in High functioning soils. Denitrification remained constant in Low functioning soils but decreased in High functioning soils. In Medium functioning soil, denitrification and N fixation were reduced, whereas nitrification remained unchanged. Significant differences in N cycle control were found between the patch centre and front, depending on the growth phase and soil functioning. Conclusion During the growth period (N demand), the patch centre influences N-microbial activities differently, depending on soil functioning, leading to improved N acquisition in soils with strong competition for mineral N (High and Medium functioning soils). Ramets at the patch centre and front control the N cycle differently, with the centre likely facilitating N acquisition and the front promoting colonization.
typdoc
Journal articles
DOI
DOI : 10.1007/s11104-024-07190-9
Accès au bibtex
BibTex
titre
Flooded with potential: urban drainage science as seen by early-career researchers
auteur
J A van der Werf, V. Pons, Kelsey Smyth, B. Shi, P. Lechevallier, E M H Abdalla, E. Andrusenko, I. Broekhuizen, G B Cavadini, A F Cortés Moreno, E. Cristiano, R. d'Ambrosio, A M Droste, M. Evangelisti, Gersende Fernandes, A. Garzón, E. Girot, L. Guericke, W. Liao, P. Mazzoglio, A. Mittal, A. Müller, J. Naves, M. Oberascher, E. Okwori, J I Perez-Alvarino, S. Pritsis, M. Regueiro-Picallo, B. Roghani, V J Taguchi, O. Wani, H. Wei, T. Yıldızlı, H Z Yerima
article
Water Science and Technology, 2025, 91 (7), pp.861-875. ⟨10.2166/wst.2025.045⟩
resume
This opinion paper reflects on the current challenges facing urban drainage systems (UDS) research, along with solutions for fostering sustainable development. Over the course of a year-long project involving 92 participants aged 24–38, including PhD candidates, post-doctoral researchers, and early-career academics, we identified critical challenges and opportunities for the sustainable development of UDS. Our exploration highlights four key challenges: limited public visibility leading to resource constraints, insufficient collaboration across subfields, issues with data scarcity and data sharing, and geographical specificities. We emphasise the importance of raising public and political awareness regarding UDS's vital role in climate adaptation and urban resilience, advocating for blue-green infrastructure and open data practices. Additionally, we address systemic academic barriers that hinder innovative research. We call for a shift away from metrics that prioritise quantity over quality. We recommend establishing stable career pathways that empower early-career researchers. This paper aims to catalyse a broader community dialogue about the future of UDS research, uniting voices from various career stages. By presenting actionable recommendations, we aim to inspire fundamental changes in research conduct, evaluation, and sustainability, ensuring the field of UDS is prepared to meet pressing urban water management challenges worldwide.
typdoc
Journal articles
DOI
DOI : 10.2166/wst.2025.045
Accès au texte intégral et bibtex
https://hal.science/hal-05037122/file/VanDerWerf2025.pdf BibTex
titre
EGCop : An Expert‐Curated Occurrence Dataset of European Groundwater‐Dwelling Copepods (Crustacea: Copepoda)
auteur
Francesco Cerasoli, Barbara Fiasca, Mattia Di Cicco, Emma Galmarini, Ilaria Vaccarelli, Stefano Mammola, Florian Malard, Fabio Stoch, Diana M P Galassi
article
Global Ecology and Biogeography, 2025, 34 (1), pp.e13953. ⟨10.1111/geb.13953⟩
resume
Motivation: Subterranean biodiversity is increasingly threatened by multiple intertwined anthropogenic impacts, including habitat loss, pollution, overexploitation of resources, biological invasions and climate change. Worryingly, subterranean biodiversity is still poorly represented in conservation agendas, also due to persisting gaps in our knowledge of the organisms thriving in the often‐secluded and difficult‐to‐access subterranean ecosystems. This is even more apparent for small‐sized (body size < 1 mm) groundwater‐dwelling metazoans, among which copepods (Crustacea: Copepoda) represent the dominant group in terms of both species richness and biomass. We present a dataset including 6986 occurrence records of 588 species/subspecies of European obligate groundwater‐dwelling copepods. We curated all records to make their taxonomy consistent with the current systematics of Copepoda, while assessing uncertainty in the geographic coordinates by coupling in‐depth web and literature searches with GIS analyses. We suggest the data provided can be used to explore a range of eco‐evolutionary questions—from the drivers of the distribution of groundwater fauna to the assembly of groundwater communities—as well as to prompt the conservation of groundwater biodiversity and more. Main Types of Variables Contained: Occurrence records of groundwater‐dwelling copepods, with details about specimen taxonomy, source of the record, occurrence locality and habitat type. Spatial Location and Grain: Geographical Europe (including western Russian Federation), along with Turkey and Georgia. Occurrence records were assigned projected geographic coordinates (EPSG:3035) at 100 m resolution but with varying spatial uncertainty. Time Period and Grain: 1907–2017. Major Taxa and Level of Measurement: Crustacea: Copepoda. Most records have species‐level identification, while some of them are identified at the subspecies level. Software Format: Comma‐separated values file (.csv) and Excel file (.xlsx), with UTF‐8 encoding and meta‐data provided following the Darwin Core standard.
typdoc
Journal articles
DOI
DOI : 10.1111/geb.13953
Accès au texte intégral et bibtex
https://hal.science/hal-05400787/file/Cerasoli_et_al_2025_GEB_34e13953.pdf BibTex
titre
Monitoring of stable isotope composition of precipitation reveals thunderstorm dynamics
auteur
Ana-Voica Bojar, Christophe Lécuyer, Hans-Peter Bojar, François Fourel, Stanislaw Chmiel
article
Isotopes in Environmental and Health Studies, 2025, 61 (1), pp.1-16. ⟨10.1080/10256016.2024.2380059⟩
resume
The summer of 2019 is particularly well known for the famous heatwaves that swept across the European continent, with its associated drought and record-breaking air temperatures. This was followed by powerful thunderstorms, characterised by hail and heavy rain that damaged the crops on a regional scale. Here, we investigated one of the largest storm cells, lasting more than 6 h, which struck southwestern Romania. High-temporal resolution sampling of storm precipitation was performed for stable isotope measurements, rainfall and air temperature, to follow the storm dynamics. Hydrogen and oxygen isotope measurements show an abrupt decreasing temporal trend followed by superimposed V-shaped patterns interpreted as reflecting moisture replenishment by successive rain bands. To model the stable isotope values of precipitation in relation to the general trend of decreasing air temperatures, we applied a numerical Rayleigh condensation model for a non-constant α isotopic fractionation factor between liquid water and water vapour. The storm is powered by four consecutive moisture fronts, each following a Rayleigh distribution. About 40 % of the water vapour condenses during the sampled storm due to adiabatic expansion and cooling, which lowers saturation. Condensation ceases when cooling and absolute humidity can no longer sustain the dew point, stopping the rain. The timing of the event, occurring late at night and early in the morning, its duration of over 6 h as well as its synoptic scale may indicate a mesoscale convective complex.
typdoc
Journal articles
DOI
DOI : 10.1080/10256016.2024.2380059
Accès au texte intégral et bibtex
https://hal.science/hal-04885531/file/Monitoring%20of%20stable%20isotope%20composition%20of%20precipitation%20reveals%20thunderstorm%20dynamics.pdf BibTex
titre
Environmental organic carbon availability determines metabolic and consumption rates in freshwater isopods
auteur
Florian Mermillod-Blondin, Christophe J Douady, Clémentine M François, Frédéric Hervant, Laurent Simon
article
Oikos, In press, ⟨10.1002/oik.11149⟩
resume
In forested freshwater ecosystems, benthic detritivorous invertebrates have been recognized as important agents of organic carbon (OC) cycling. In comparison with these detrital-rich ecosystems, OC processing by invertebrates in heterotrophic groundwater ecosystems characterized by low OC availability has been poorly documented. The availability of OC should significantly influence the basal metabolism and the feeding rates of aquatic invertebrates, thus affecting how quickly these organisms are able to process OC sources. Therefore, obligate-groundwater species living in OC-poor ecosystems should process OC sources at lower rates than surface-dwelling species to satisfy their energy requirements. Despite their implications for groundwater ecosystem functioning, conclusive tests of these predictions are lacking. We tested these two predictions by evaluating how the environmental availability of three main OC sources (coarse and fine particulate organic matter, and sedimentary biofilm) influences the basal metabolic and OC consumption rates by four species of freshwater asellid isopods. The four isopod taxa used consist of two surface-dwelling and two obligate-groundwater species inhabiting environments characterized by profoundly asymmetric OC availabilities. As expected, obligate-groundwater asellids exhibited reduced basal metabolic rates in comparison with surface-dwelling asellids. This result was associated with a positive correlation between basal metabolic rates of isopods and the availability of OC in their environments. The processing rate of each OC source was significantly and positively correlated with the basal metabolic rate of isopod species. Finally, obligate-groundwater asellids exhibited reduced metabolic and associated OC processing rates to cope with resource scarcity in groundwater ecosystems. Nevertheless, when OC consumption rates were expressed relative to the quantity of OC in the environment of each species, obligate-groundwater asellids processed at least the same percentages of OC available in their environments as surface-dwelling asellids. This finding suggests that obligate-groundwater isopods could contribute significantly to carbon cycling in their ecosystems.
typdoc
Journal articles
DOI
DOI : 10.1002/oik.11149
Accès au texte intégral et bibtex
https://hal.science/hal-05095703/file/Mermillod-Blondin%20et%20al.%202025_preprint.pdf BibTex
titre
How can biodiversity strategy and action plans incorporate genetic diversity and align with global commitments?
auteur
Sean Hoban, Christina Hvilsom, Abdeldjalil Aissi, Alexandre Aleixo, Julie Bélanger, Katarzyna Biala, Robert Ekblom, Ancuta Fedorca, W Chris Funk, Alejandra Lorena Goncalves, Andrew Gonzalez, Myriam Heuertz, Alice Hughes, Fumiko Ishihama, Belma Kalamujic Stroil, Linda Laikre, Philip Mcgowan, Katie Millette, David O'Brien, Ivan Paz-Vinas, Victor Julio Rincón-Parra, Marine Robuchon, Jon Paul Rodríguez, María Alejandra Rodríguez-Morales, Gernot Segelbacher, Tiffany Straza, Ruliyana Susanti, Ntakadzeni Tshidada, Sibelle Torres Vilaça, Jessica da Silva
article
Bioscience, 2025, 75, pp.47-60. ⟨10.1093/biosci/biae106⟩
resume
National, subnational, and supranational entities are creating biodiversity strategy and action plans (BSAPs) to develop concrete commitments and actions to curb biodiversity loss, meet international obligations, and achieve a society in harmony with nature. In light of policymakers’ increasing recognition of genetic diversity in species and ecosystem adaptation and resilience, this article provides an overview of how BSAPs can incorporate species’ genetic diversity. We focus on three areas: setting targets; committing to actions, policies, and programs; and monitoring and reporting. Drawing from 21 recent BSAPs, we provide examples of policies, knowledge, projects, capacity building, and more. We aim to enable and inspire specific and ambitious BSAPs and have put forward 10 key suggestions mapped to the policy cycle. Together, scientists and policymakers can translate high level commitments, such as the Convention on Biological Diversity’s Kunming–Montreal Global Biodiversity Framework, into concrete nationally relevant targets, actions and policies, and monitoring and reporting mechanisms.
typdoc
Journal articles
DOI
DOI : 10.1093/biosci/biae106
Accès au bibtex
BibTex
titre
Six million years of vole dental evolution shaped by tooth development
auteur
Fabien Lafuma, Élodie Renvoisé, Julien Clavel, Ian J Corfe, Gilles Escarguel
article
Proceedings of the National Academy of Sciences of the United States of America, 2025, 122 (31), pp.e2505624122. ⟨10.1073/pnas.2505624122⟩
resume
Morphological change occurs over macroevolutionary timescales under the action of natural selection and genetic drift combined with developmental processes shaping organogenesis. Although determining their relative weight is made difficult by discrepancies between paleontological and neontological data, mammalian tooth morphology may bridge the gap between fossil record and laboratory observations. Fossils indicate that mammals have frequently diversified after evolving molars bearing more cusps, while developmental biology shows these emerge through the iterative signaling of enamel knots. However, this theoretical evo-devo model of mammalian tooth evolution has not been tested with empirical data from both fossils and laboratory experiments. In doing so, we identify a shared developmental basis for the convergent, ratcheted evolution of increasingly complex molars in arvicoline rodents (voles, lemmings, muskrats). Longer, narrower molars lead to more cusps throughout development and deep time, suggesting that tooth development directed morphological evolution. Both the arvicoline fossil record and vole tooth development show slower transitions toward the highest cusp counts. This pattern suggests that the developmental processes fueling the evolution of increasingly complex molars may also limit the potential for further complexity increases. Integrating paleontological and developmental data shows that long-term evolutionary trends can be accurately and mostly explained by the simple tinkering of developmental pathways.
typdoc
Journal articles
DOI
DOI : 10.1073/pnas.2505624122
Accès au texte intégral et bibtex
https://hal.science/hal-05245152/file/Lafuma%20et%20al._2025_Six%20million%20years%20of%20vole%20dental%20evolutio.pdf BibTex
titre
Elusive tropical forest canopy diversity revealed through environmental DNA contained in rainwater
auteur
Lucie Zinger, Anne-Sophie Benoiston, Yves Cuenot, Céline Leroy, Eliane Louisanna, Lucie Moreau, Frédéric Petitclerc, Finn Piatscheck, Jérôme Orivel, Cécile Richard-Hansen, Lou Hansen-Chaffard, Uxue Suescun, Valérie Troispoux, Frédéric Boyer, Jérôme Chave, Thibaud Decaëns, Antoine Fouquet, Johan Pansu, Jérémy Raynaud, Rodolphe Rougerie, Lucas Sire, Heidy Schimann, Pierre Taberlet, Amaia Iribar
article
Science Advances , 2025, 11 (33), pp.eadx4909. ⟨10.1126/sciadv.adx4909⟩
resume
Exploring the biodiversity hidden in tropical rainforests canopies represents a major frontier in biodiversity research yet remains challenging. Environmental DNA (eDNA) can revolutionize this field as it did already in various ecosystems. Here, we test the hypothesis that eDNA contained in canopy throughfall could be used to monitor this elusive diversity and detect anthropogenic disturbance. Using custom-made, low-cost rain collectors, we sampled rainwash eDNA in a mature Amazonian forest and a nearby tree plantation. We successfully detected eDNA from tropical woody and epiphyte plants, vertebrates (mammals, birds, and amphibians), and insects (e.g., mosquitoes, ants, and beetles). The taxonomic composition and diversity reflected disturbance, with significantly lower diversity in the plantation. Crucially, rainwash eDNA integrated biodiversity over a 10-day period in passive collectors and provided a local signature. This approach has thus potential for establishing a cost-effective monitoring system for tropical moist forest canopies, applicable in impact assessments and sustainable management.
typdoc
Journal articles
DOI
DOI : 10.1126/sciadv.adx4909
Accès au texte intégral et bibtex
https://hal.science/hal-05220607/file/Elusive%20tropical%20forest%20canopy%20diversity.pdf BibTex