Search results for "diversity"

Ecologie Comportementale. Cours et Questions de rélexion

2005

Non-invasive genetic tools to study wildlife populations

2016

International audience; The past three decades have witnessed the development of molecular tools, resulting in the successful integration of genetic methods into studies of wildlife populations. Genomic DNA can be obtained from a variety of sources including blood or tissues, but also sources which do not necessarily depend on handling or observing animals, like feces, urine, hair, or shed skin. These non-invasive samples can then be used to identify individuals, gender, and species. Genetic data can also be used to assess mating systems, hybridization, gene flow, and effective population size. Conservation biology can benefit of genetic data to define management units and to provide insigh…

Editorial: Bourgogne Franche-Comté Nature est une revue scientifique

2020

National audience; Face aux divers discours sur la crise environnementale et ses enjeux, l’actualité nous rappelle régulièrement comment le constat scientifique est mis au défi de la désinformation. Celle-ci s’exprime en pervertissant auprès du grand public l'espace offert par le doute critique (par exemple par les soi-disant climatosceptiques, les industriels de la chimie, etc.), ou par l'agora sans filtre d'internet où tous les avis apparaissent se valoir et entretiennent la confusion entre opinion et savoir. Les naturalistes, dans ce contexte, ont un rôle premier à jouer, en produisant des faits vérifiés, et donc en défendant publiquement la démarche et les connaissances scientifiques. L…

Abundance of NARG, NIRK and NOSZ genes of denirifying bacteria during primary successions of a glacier foreland

2007

The multipurpose date palm “tree”: anatomical identification of modern palm stems and practical application in the archaeological site of Madâ’in Sâl…

2011

International audience

Modélisation de paysages agricoles pour la simulation et l'analyse de processus

2017

L’objet de ce colloque est de partager des connaissances, expériences et outils autour de la modélisation des paysages agricoles, de leur structure et de leur dynamique en considérant la modélisation de la structure physique du paysage agricole et celle des processus socio-techniques qui gouvernent les usages des éléments le constituant (parcelles, fossés, etc.). Par ailleurs, les paysages agricoles sont le support de processus biotiques et abiotiques spatialisés. Les processus biotiques incluent par exemple les dynamiques d’organismes d’importance en agriculture – ravageurs et auxiliaires – ou contribuant à la biodiversité patrimoniale ou ordinaire. Les processus abiotiques incluent par ex…

Biotic homogenisation in bird communities leads to large‐scale changes in species associations

2021

The impact of global change on biodiversity is commonly assessed in terms of changes in species distributions, community richness and community composition. Whether and how much associations between species are also changing is much less documented. In this study, we quantify changes in large-scale patterns of species associations in bird communities in relation to changes in species composition. We use network approaches to build three community-aggregated indices reflecting complementary aspects of species association networks. We characterise the spatio–temporal dynamics of these indices using a large-scale and high-resolution dataset of bird co-abundances of 109 species monitored for 17…

Possible role of eclampsia/preeclampsia in evolution of human reproduction.

2008

10 pages

Biogeographical patterns of soil bacterial communities.

2009

International audience; This study provides the first maps of variations in bacterial community structure on a broad scale based on genotyping of DNA extracts from 593 soils from four different regions of France (North, Brittany, South-East and Landes). Soils were obtained from the soil library of RMQS (Réseau de Mesures de la Qualité des Sols = French soil quality monitoring network). The relevance of a biogeographic approach for studying bacterial communities was demonstrated by the great variability in community structure and specific geographical patterns within and between the four regions. The data indicated that the distribution of bacterial community composition might be more relate…

Spider webs designed for rare but lifesaving catches

2005

International audience