Results 31 to 40 of about 4,596 (198)

Réflexions méthodologiques sur les relevés et les suivis de biodiversité [PDF]

Sciences, Eaux & Territoires, 2010
Comment évaluer sans mesurer ? La mesure de la biodiversité demeure un exercice difficile mais pourtant rendu nécessaire. Cette difficulté tient essentiellement à l'objet même de la biodiversité (diversité des espèces et des milieux, diversité des ...
ARCHAUX, Frédéric
doaj   +3 more sources

The Single, the Whole, and the Pooled: Implications of Tissue Choice for Stable Isotope Analysis

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT In the exciting era of non‐invasive tissue sampling and data reuse via open access databases, it is increasingly challenging to ensure comparability of sample types for stable isotope analysis in ecology. According to the theoretical predictions about the changes in the stable isotope values between prey and consumers and tissue turnover rates,
Paride Balzani, Nadège Belouard, Lukáš Veselý, Antonín Kouba   +3 more
wiley   +1 more source

Naturalité et biodiversité : des relations à préciser pour penser la valeur de conservation des écosystèmes en libre évolution

Revue Forestière Française, 2022
Biodiversité et naturalité peuvent être considérées comme deux composantes distinctes et complémentaires des écosystèmes forestiers. Nous partons ici du constat que les relations entre ces deux composantes font encore souvent l’objet de débats ...
Loïs Morel, Simon Chollet
doaj   +1 more source

A novel approach to estimate non‐algal particle absorption for improved retrieval of pigment concentrations in coastal waters

Limnology and Oceanography: Methods, EarlyView.
Abstract Phytoplankton play a central role in ocean biogeochemistry and understanding their composition and variability is critical for monitoring marine ecosystem dynamics. Continuous spectrophotometric measurements (using a Seabird Sci. AC‐S) along ship tracks enable high‐resolution measurements of particle spectral absorption (apλ$$ {a}_p\left ...
Margherita Costanzo, Vittorio E. Brando, Emmanuel Boss, Alison Chase, David Doxaran   +4 more
wiley   +1 more source

Inequalities in intraspecific plant–lemur interactions drive seed dispersal patterns

Oikos, EarlyView.
Biotic interactions occur between individuals and accumulate to shape species‐level interaction structure across a community. Skewed interaction structures, where a few individuals are highly connected and most have few interactions, are increasingly identified at the individual‐level.
Jadelys Tonos, Hasinavalona Rakotoarisoa, Onja H. Razafindratsima   +2 more
wiley   +1 more source

Experimental and field evidence indicate that islet‐nesting tundra birds experience reduced nest predation and benefit indirectly from high snow goose densities

Oikos, EarlyView.
Landscape features can shape the occurrence and strength of predator–prey interactions by influencing predation risk and prey distribution. In the High Arctic, some bird species select nesting sites with physical features that impede access for their main terrestrial predator, the Arctic fox.
Marylou Beaudoin, Andréanne Beardsell, Éliane Duchesne, Madeleine‐Zoé Corbeil‐Robitaille, Pierre Legagneux, Dominique Berteaux, Joël Bêty   +6 more
wiley   +1 more source

More than proteins for empty stomachs: Wild meat in the BaTonga food system

People and Nature, EarlyView.
Abstract Our paper highlights the limitations of the framework used by many conservation‐focused programmes that incorporate food security objectives. This framework encourages the substitution of wild proteins with domestic proteins by promoting animal farming in communities located near conservation areas.
Muriel Figuié, Luzibo Ottilia Munsaka, Vupenyu Dzingirai, Olivier Lepiller, Maxwell Phiri, Patrice Grimaud   +5 more
wiley   +1 more source

Place des sites naturels de compensation dans la séquence « Éviter-Réduire-Compenser » et panorama des problématiques associées

Sciences, Eaux & Territoires, 2022
Alors qu’elle occupe une part croissante du débat public ces dernières années, la séquence « Éviter-Réduire-Compenser » est un instrument de l’action publique ayant pour objectif une non-perte nette de biodiversité lors d’opérations d’aménagement du ...
S. AUBRY, S. GAUCHERAND, B. PADILLA, S. PIOCH, A.C. VAISSIÈRE, T. SPIEGELBERGER   +5 more
doaj   +1 more source

Patterns of wild meat and other protein consumption in the periphery of Salonga National Park, Democratic Republic of the Congo

People and Nature, EarlyView.
Abstract In Central Africa, human activities are severely impacting terrestrial and aquatic wildlife, threatening the food security of millions of people. Accordingly, sustainable use of wildlife is crucial for the nutrition and livelihoods of many rural communities in the region.
Zolo Admettons, Mattia Bessone, Josué Ausse Baraka, Josué Engombe Botomia, Espérance Miezi, Bénédicte Nsilu, Jonathan Nkamisha Mukole, Michel Opelele Omeno, Jean Semeki Ngabinzeke, Barbara Fruth   +9 more
wiley   +1 more source

Céréaliers et biodiversité : une synergie à réaffirmer

Sciences, Eaux & Territoires, 2022
Face au constat d’une biodiversité en déclin et notamment dans les espaces agricoles, les quatre partenaires nationaux du programme Agrifaune ont mis en place une étude intitulée « Reconnaissance de l’engagement individuel des agriculteurs dans ...
David GRANGER, Charles BOUTOUR
doaj   +1 more source