Hide and seek in the Bay of Biscay—a functional investigation of marine megafauna and small pelagic fish interactions
| Autor: | Jérôme Spitz, C. Lambert, Vincent Ridoux, Ghislain Dorémus, Mathieu Doray, Matthieu Authier |
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| Přispěvatelé: | Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC), Institut National de la Recherche Agronomique (INRA)-Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS), Observatoire PELAGIS UMS 3462 (PELAGIS), LIttoral ENvironnement et Sociétés - UMR 7266 (LIENSs), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), IFREMER - Nantes, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Ecology predator-prey interactions 010604 marine biology & hydrobiology Hide and seek predator–prey interactions Pelagic zone Aquatic Science Oceanography Bay of Biscay 010603 evolutionary biology 01 natural sciences Fishery cetaceans prey profitability marine top predators Geography Megafauna predator avoidance [SDE]Environmental Sciences 14. Life underwater functional traits Bay Ecology Evolution Behavior and Systematics seabirds |
| Zdroj: | ICES Journal of Marine Science ICES Journal of Marine Science, Oxford University Press (OUP), 2019, 76 (1), pp.113-123. ⟨10.1093/icesjms/fsy143⟩ Ices Journal Of Marine Science (1054-3139) (Oxford Univ Press), 2019-01, Vol. 76, N. 1, P. 113-123 |
| ISSN: | 1054-3139 1095-9289 |
| DOI: | 10.1093/icesjms/fsy143⟩ |
| Popis: | Prey and predator distributions influence one another. Understanding the scale and the orientation of predator–prey spatial correlations is crucial in foraging ecology. Growing evidence suggests that predator–prey interactions are more constrained by functional characteristics of both the predator and the prey. Unfortunately, in marine pelagic systems, the scale and orientation of spatial correlations between predators and prey have been only little explored from a functional point of view. We tested the existence of fine-scale association between predators and fish functional groups. Visual predator sightings and acoustic fish records were collected synchronously during oceanographic surveys from 2004 to 2014. Prey biomass was integrated by nautical miles and split into four size classes (30 cm) and two depth layers (surface, deep). We computed the relative biomass by prey size and depth category from 0 to 12 nm around predator sightings to determine the predators’ proximity to local prey biomass. Two cetaceans (common, bottlenose dolphins) and three seabirds (northern gannets, auks, northern fulmars) were studied. No association was found in fulmars, indicating they probably do not feed on considered fishes in the area. Gannets and auks were positively correlated with local prey biomass for sizes |
| Databáze: | OpenAIRE |
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