À l'occasion de la journée internationale de la biodiversité du 22 mai 2024, l’Inist a constitué un corpus sur la conservation des mammifères menacés dans le monde.
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Alors que les températures du mois de juillet 2022 sont très élevées en Europe de l'Ouest et qu'un Rollier d'Europe séjourne depuis au moins le 15 juillet 2022 en Seine-et-Marne (près de Paris), une étude récente suggère que l'espèce devrait connaître une expansion importante en France et en Italie à moyen terme.
Primary forests, defined here as forests where the signs of human impacts, if any, are strongly blurred due to decades without forest management, are scarce in Europe and continue to disappear. Despite these losses, we know little about where these forests occur. Here, we present a comprehensive geodatabase and map of Europe’s known primary forests. Our geodatabase harmonizes 48 different, mostly field-based datasets of primary forests, and contains 18,411 individual patches (41.1 Mha) spread across 33 countries. When available, we provide information on each patch (name, location, naturalness, extent and dominant tree species) and the surrounding landscape (biogeographical regions, protection status, potential natural vegetation, current forest extent).
The ongoing recovery of terrestrial large carnivores in North America and Europe is accompanied by intense controversy. On the one hand, reestablishment of large carnivores entails a recovery of their most important ecological role, predation. On the other hand, societies are struggling to relearn how to live with apex predators that kill livestock, compete for game species, and occasionally injure or kill people. Those responsible for managing these species and mitigating conflict often lack fundamental information due to a long-standing challenge in ecology: How do we draw robust population-level inferences for elusive animals spread over immense areas? Here we showcase the application of an effective tool for spatially explicit tracking and forecasting of wildlife population dynamics at scales that are relevant to management and conservation.
Revue : Proceedings of the National Academy of Sciences Nov 2020, 202011383; DOI: 10.1073/pnas.2011383117
Google traduction du titre de l'article "Estimation et prévision de la dynamique spatiale des populations de grands prédateurs à l'aide de la surveillance génétique transnationale"
Il a longtemps été supposé que les espèces rares contribuaient faiblement au fonctionnement des écosystèmes. Des études récentes ont cependant remis en cause cette hypothèse, la notion de rareté ne recouvrant pas seulement l’abondance ou l'étendue géographique des espèces, mais aussi l’originalité de leurs rôles écologiques. Ces espèces aux fonctions uniques étant irremplaçables, il est désormais fondamental de comprendre leurs caractéristiques écologiques, de cartographier leur distribution et d’évaluer leur vulnérabilité aux menaces actuelles et futures.
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Global distribution and conservation status of ecologically rare mammal and bird species. Nicolas Loiseau*, Nicolas Mouquet*, Nicolas Casajus, Matthias Grenié, Maya Gueguen, Brian Maitner, David Mouillot, Annette Ostling, Julien Renaud, Caroline Tucker, Laure Velez, Wilfried Thuiller, Cyrille Violle. Nature communications, le 8 octobre 2020. DOI : 10.1038/s41467-020-18779-w.
According to the competitive exclusion principle, species with low competitive abilities should be excluded by more efficient competitors; yet, they generally remain as rare species. Here, we describe the positive and negative spatial association networks of 326 disparate assemblages, showing a general organization pattern that simultaneously supports the primacy of competition and the persistence of rare species. Abundant species monopolize negative associations in about 90% of the assemblages. On the other hand, rare species are mostly involved in positive associations, forming small network modules.
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Calatayud, J., Andivia, E., Escudero, A. et al. Positive associations among rare species and their persistence in ecological assemblages. Nat Ecol Evol (2019) doi:10.1038/s41559-019-1053-5
Global change threatens invertebrate biodiversity and its central role in numerous ecosystem functions and services. Functional trait analyses have been advocated to uncover global mechanisms behind biodiversity responses to environmental change, but the application of this approach for invertebrates is underdeveloped relative to other organism groups. From an evaluation of 363 records comprising >1.23 million invertebrates collected from rivers across nine biogeographic regions on three continents, consistent responses of community trait composition and diversity to replicated gradients of reduced glacier cover are demonstrated.
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Lee E. Brown, Kieran Khamis, Martin Wilkes, Phillip Blaen, John E. Brittain, Jonathan L. Carrivick, Sarah Fell, Nikolai Friberg, Leopold Füreder, Gisli M. Gislason, Sarah Hainie, David M. Hannah, William H. M. James, Valeria Lencioni, Jon S. Olafsson, Christopher T. Robinson, Svein J. Saltveit, Craig Thompson & Alexander M. Milner Nature Ecology & Evolution (2017) Published online: 18 December 2017doi:10.1038/s41559-017-0426-x
After revolutionizing bird-migration science over the past decade, geolocation technology is poised to shine light on the field’s darkest mystery.
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Une histoire de la géolocalisation anglé ornitho, via Claudia Azafzaf @ClaudiaTUNISIE (Directeur Exécutif, Association "Les Amis des Oiseaux" (AAO) - BirdLife en Tunisie) selon bio Facebook.
Durant des millions d'années, les poissons d'eau douce évoluaient de manière isolée dans leurs continents respectifs. Jusqu'à ce que le déplacement massif des espèces par les sociétés humaines rebattent les cartes, selon une étude parue vendredi 17 novembre.
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GEO avec AFP Publié le 20/11/2023. Via @BLeroyEcology
Article de recherche : Boris Leroy et al., Major shifts in biogeographic regions of freshwater fishes as evidence of the Anthropocene epoch. Sci. Adv.9, eadi5502(2023) .DOI:10.1126/sciadv.adi5502
Lire aussi sur le site The Conversation France par Boris Leroy
Maître de conférences en écologie et biogéographie (MNHN)
Area of Habitat (AOH) is “the habitat available to a species, that is, habitat within its range”. It complements a geographic range map for a species by showing potential occupancy and reducing commission errors. AOH maps are produced by subtracting areas considered unsuitable for the species from their range map, using information on each species’ associations with habitat and elevation.
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Lumbierres, M., Dahal, P.R., Soria, C.D. et al. Area of Habitat maps for the world’s terrestrial birds and mammals. Sci Data9, 749 (2022). https://doi.org/10.1038/s41597-022-01838-w
Recent declines of many European bird species have been linked with various environmental changes, especially land-use change and climate change. Since the intensity of these environmental changes varies among different countries, we can expect geographic variation in bird population trends. Here, we compared the population trends of bird species among neighbouring countries within central Europe (Czech Republic, Denmark, Germany, Switzerland) between 1990 and 2016 and examined trait-associations with population trends at both national and international scales. We found that Denmark had the highest proportion of declining species while Switzerland had the lowest.
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Diana Bowler, Raja Richter, Daniel Eskildsen, Johannes Kamp, Charlotte M. Moshøj, Jiří Reif, Nicolas Strebel, Sven Trautmann, Petr Voříšek, Geographic variation in the population trends of common breeding birds across central Europe, Basic and Applied Ecology,2021, https://doi.org/10.1016/j.baae.2021.07.004
Identifying species that are both geographically restricted and functionally distinct, i.e. supporting rare traits and functions, is of prime importance given their risk of extinction and their potential contribution to ecosystem functioning. We use global species distributions and functional traits for birds and mammals to identify the ecologically rare species, understand their characteristics, and identify hotspots.
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Suivez l'un des auteurs @NicolasMouquet
Loiseau Nicolas, Mouquet Nicolas, Casajus Nicolas, Grenie Matthias, Gueguen Maya, Maitner Brian, Mouillot David, Ostling Annette, Renaud Julien, Tucker Caroline, Velez Laure, Thuiller Wilfried, Violle Cyrille (2020). Global distribution and conservation status of ecologically rare mammal and bird species. Nature Communications, 11(1), 5071(11p.). Publisher's official version : https://doi.org/10.1038/s41467-020-18779-w , Open Access version : https://archimer.ifremer.fr/doc/00657/76892/
Assessing the pathways by which alien species are introduced is essential if we are to identify potential risks and evaluate management decisions. Intentional introductions are responsible for the introductions of millions of animals throughout Latin America. We explore: (1) the relative role of several intentional introduction pathways (hunting, feeding, fur, biological control, the pet trade and others) in the general context of introductions of alien species; (2) the relative importance of the intentional pathways across the different taxa; (3) similar patterns as regards the composition of alien species across countries, (4) the underlying factors that drive the richness of alien species in Latin America, and (5) the potential impacts of alien species on the region. According to our results, 69 species of mammals and 62 species of birds were introduced into Latin America by means of intentional pathways...
DocBiodiv's insight:
A.J. Carpio, Y. Álvarez, J. Oteros, F. León, F.S. Tortosa, Intentional introduction pathways of alien birds and mammals in Latin America, Global Ecology and Conservation,Volume 22,2020,e00949,ISSN 2351-9894, https://doi.org/10.1016/j.gecco.2020.e00949.
To understand how functional traits and evolutionary history shape the geographic distribution of plant life on Earth, we need to integrate high‐quality and global‐scale distribution data with functional and phylogenetic information. Large‐scale distribution data for plants are, however, often restricted to either certain taxonomic groups or geographic regions.
Dans le cadre du cycle de conférences "Fleurs du futur. Demain, le vivant fera-t-il la ville?", à la Plateforme de la création architecturale de la Cité de l'Architecture et du Patrimoine, l'agence XTU architects invite des chercheurs, des acteurs de l’innovation, un philosophe professeur de cinéma à explorer ensemble les voies par lesquelles le vivant pourrait demain changer nos vies...
Avec Philippe Clergeau, professeur au Museum National d'Histoire Naturelle, un des pionniers de l'écologie urbaine et de l'installation d'une biodiversité dans la ville. Sabine Barles, professeur à l'UMR Géographie-Cités, ses travaux de recherche portent sur l’histoire des techniques et de l’environnement urbains (XVIIIe-XXe siècles), le métabolisme urbain, l’écologie territoriale et les trajectoires socio-écologiques. Pascal Picq, paléoanthropologue au Collège de France, ses recherches s’intéressent à l’évolution morphologique et sociale de la lignée humaine dans le cadre des théories modernes de l’évolution.
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Pourquoi prendre en compte la nature ? C'est avec cette question que Philippe Clergeau débute son intervention ?
Merci @onorvez qui a tweeté ce lien en écrivant "Biodiversité, métabolisme et humanité de la ville" par Sabine Barles (@SorbonneParis1), Philippe Clergeau (@mnhn) & @pascalpicq (@cdf1530 ) #biodiversité #urbain #paysage #ville #architecture #continuité " c'est passionnant et ça rend intelligent ! Video Ajoutée le 24 mars 2016
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