A5085859432- Marine animal studies overview
- Isotope Analysis in Ecology
- Marine and fisheries research
- Marine Bivalve and Aquaculture Studies
- Arctic and Antarctic ice dynamics
- Genetic Mapping and Diversity in Plants and Animals
- Environmental DNA in Biodiversity Studies
- Aquatic Invertebrate Ecology and Behavior
- Romani and Gypsy Studies
- Coral and Marine Ecosystems Studies
- Healthcare Systems and Practices
- Land Use and Ecosystem Services
- Health Systems, Economic Evaluations, Quality of Life
- Animal Behavior and Reproduction
- Bat Biology and Ecology Studies
- Economic and Environmental Valuation
- Avian ecology and behavior
- Primate Behavior and Ecology
- Nutrition, Health, and Society Studies
- Genetic and phenotypic traits in livestock
Centre d'Etudes Biologiques de Chizé
2009-2021
Deakin University
2015-2019
Centre National de la Recherche Scientifique
2009-2016
La Rochelle Université
2015-2016
Université de Strasbourg
2014
Institut Pluridisciplinaire Hubert Curien
2014
The movement and dietary history of individuals can be studied using stable isotope records in archival keratinous tissues. Here, we present a chronology temporally fine-scale data on the trophic niche otariid seals by measuring isotopic signature serially sampled whiskers. Whiskers male Antarctic fur breeding at Crozet Islands showed synchronous regular oscillations both their δ 13 C 15 N values that are likely to represent annual migrations over long term (mean 4.8 years). At population...
Background Individual variations in the use of species niche are an important component diversity trophic interactions. A challenge testing consistency individual foraging strategy is repeated collection information on same individuals. Methodology/Principal Findings The strategies sympatric fur seals (Arctocephalus gazella and A. tropicalis) were examined using stable isotope signature serially sampled whiskers. Most whiskers exhibited synchronous δ13C δ15N oscillations that correspond to...
Summary The degree of individual specialization in resource use differs widely among wild populations where individuals range from fully generalized to highly specialized. This interindividual variation has profound implications many ecological and evolutionary processes. A recent review proposed four main causes specialization: interspecific intraspecific competition, opportunity predation. Using the isotopic signature subsampled whiskers, we investigated what three these factors...
While sexual segregation is expected in highly dimorphic species, the local environment a major factor driving degree of resource partitioning within population. Sexual and individual niche was investigated Australian fur seal (Arctocephalus pusillus doriferus), which benthic foraging species restricted to shallow continental shelf region south-eastern Australia. Tracking data isotopic values plasma, red blood cells whiskers were combined document spatial dietary throughout year. indicated...
Summary The Before‐After Control‐Impact Paired Series ( BACIPS ) design distinguishes natural spatial and temporal variability from variation induced by an environmental impact (or intervention) of interest. is a powerful tool to derive inferences about interventions when classic experimental approaches (e.g. which rely on replicates random assignment treatments) are not feasible or desirable. Previously applied designs generally assume that effects sudden, constant long‐lived: is, systems...
Abstract Marine protected area ( MPA ) networks, with varying degrees of protection and use, can be useful tools to achieve both conservation fisheries management benefits. Assessing whether networks meet their objectives requires data from Before the establishment network better discern natural spatiotemporal variation preexisting differences response protection. Here, we use a Progressive‐Change BACIPS approach assess ecological effects five fully three moderately s on fish communities in...
Abstract Investigating the ontogeny of niche differentiation enables to determine at which life-stages sexual segregation arises, providing insights into main factors driving resource partitioning. We investigated foraging ecology in Antarctic fur seals ( Arctocephalus gazella ), a highly dimorphic species with contrasting breeding strategies between sexes. Sequential δ 13 C and 15 N values whiskers provided longitudinal proxy throughout whole life seals, from weaning, when size dimorphism...
Individual specialization is widespread among wild populations. While its fitness consequences are central in predicting the ecological and evolutionary trajectories of populations, they remain poorly understood. Long-term individual foraging specializations occur male Antarctic (Arctocephalus gazella) Australian (A. pusillus doriferus) fur seals. Strong selective pressure expected these highly dimorphic polygynous species, raising question payoffs associated with different strategies. We...