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Background In marine pelagic ecosystems, the spatial distribution of biomass is heterogeneous and dynamic. At large scales, physical processes are the main driving forces of biomass distribution. At fine scales, both biotic and abiotic parameters are likely to be key determinants in the horizontal and vertical distribution of biomass, with direct consequences on the foraging behaviour of diving predators...
Optimal diving models have been developed to investigate how air‐breathing predators should adjust their diving behaviour to optimize their foraging efficiency. Using time‐depth recorders and 3D accelerometers, we addressed this question on six free‐ranging Southern Elephant Seal (SES) females equipped on Kerguelen Island.
We hypothesize that seals would initially increase their foraging time...
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