Decadal stability in top predator habitat preferences in the Bay of Biscay
International audience Most oceanographic systems, especially shelf ecosystems, are characterised by interannual variability in the timing, extent and intensity of their seasonal patterns. Such interannual variations have important consequences on top predator habitat preferences. Capitalising on oc...
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Online Access: | https://hal.archives-ouvertes.fr/hal-02264538 https://doi.org/10.1016/j.pocean.2018.03.007 |
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ftccsdartic:oai:HAL:hal-02264538v1 2023-05-15T17:35:34+02:00 Decadal stability in top predator habitat preferences in the Bay of Biscay Lambert, C. Authier, M. Doray, M. Dorémus, G. Spitz, J. Ridoux, V. Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) 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) Observatoire PELAGIS UMS 3462 (PELAGIS) 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) IFREMER EMH Nantes France Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) 2018-09 https://hal.archives-ouvertes.fr/hal-02264538 https://doi.org/10.1016/j.pocean.2018.03.007 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pocean.2018.03.007 hal-02264538 https://hal.archives-ouvertes.fr/hal-02264538 doi:10.1016/j.pocean.2018.03.007 ISSN: 0079-6611 Progress in Oceanography https://hal.archives-ouvertes.fr/hal-02264538 Progress in Oceanography, Elsevier, 2018, 166, pp.109-120. ⟨10.1016/j.pocean.2018.03.007⟩ Temporal variability Habitat preference North Atlantic Seabirds Cetaceans Bay of Biscay [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2018 ftccsdartic https://doi.org/10.1016/j.pocean.2018.03.007 2021-11-07T01:43:02Z International audience Most oceanographic systems, especially shelf ecosystems, are characterised by interannual variability in the timing, extent and intensity of their seasonal patterns. Such interannual variations have important consequences on top predator habitat preferences. Capitalising on oceanographic surveys performed every spring since 2004 in the Bay of Biscay (BoB), this study explored interannual variations in habitat preferences exhibited by five mobile top predator species: bottlenose and common dolphins, auks, fulmars and northern gannets. We expected to find species with similar habitat preferences every year or species exhibiting important variability in their habitat preferences. First, we identified with a Principal Component Analysis (PCA) three different habitats of varying extent depending on year: river plumes, central shelf waters and shelf edge. Second, the Principal Components were used to explore the habitat preferences of predators through Generalized Additive Models. We fitted two kinds of models, using and not using the year as an interaction term, to test whether habitat preferences changed across years. Our results showed a range of habitat strategies based on the specificity and stability of species preferences. Species exhibiting narrower habitat preferences also exhibited stronger stability in their preferences among years while the species with wider habitat preferences exhibited higher variability among years. The target habitats differed across studied species, with bottlenose dolphins targeting the shelf edge exclusively, auks preferring river plumes, fulmars exhibiting a gradual preference from the shelf edge to river plumes and gannets being present in any of the three habitats. In contrast, the habitat preferences of common dolphins, the most sighted cetacean species in the BoB, could not be reliably inferred. Article in Journal/Newspaper North Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Progress in Oceanography 166 109 120 |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Temporal variability Habitat preference North Atlantic Seabirds Cetaceans Bay of Biscay [SDE]Environmental Sciences |
spellingShingle |
Temporal variability Habitat preference North Atlantic Seabirds Cetaceans Bay of Biscay [SDE]Environmental Sciences Lambert, C. Authier, M. Doray, M. Dorémus, G. Spitz, J. Ridoux, V. Decadal stability in top predator habitat preferences in the Bay of Biscay |
topic_facet |
Temporal variability Habitat preference North Atlantic Seabirds Cetaceans Bay of Biscay [SDE]Environmental Sciences |
description |
International audience Most oceanographic systems, especially shelf ecosystems, are characterised by interannual variability in the timing, extent and intensity of their seasonal patterns. Such interannual variations have important consequences on top predator habitat preferences. Capitalising on oceanographic surveys performed every spring since 2004 in the Bay of Biscay (BoB), this study explored interannual variations in habitat preferences exhibited by five mobile top predator species: bottlenose and common dolphins, auks, fulmars and northern gannets. We expected to find species with similar habitat preferences every year or species exhibiting important variability in their habitat preferences. First, we identified with a Principal Component Analysis (PCA) three different habitats of varying extent depending on year: river plumes, central shelf waters and shelf edge. Second, the Principal Components were used to explore the habitat preferences of predators through Generalized Additive Models. We fitted two kinds of models, using and not using the year as an interaction term, to test whether habitat preferences changed across years. Our results showed a range of habitat strategies based on the specificity and stability of species preferences. Species exhibiting narrower habitat preferences also exhibited stronger stability in their preferences among years while the species with wider habitat preferences exhibited higher variability among years. The target habitats differed across studied species, with bottlenose dolphins targeting the shelf edge exclusively, auks preferring river plumes, fulmars exhibiting a gradual preference from the shelf edge to river plumes and gannets being present in any of the three habitats. In contrast, the habitat preferences of common dolphins, the most sighted cetacean species in the BoB, could not be reliably inferred. |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) 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) Observatoire PELAGIS UMS 3462 (PELAGIS) 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) IFREMER EMH Nantes France Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) |
format |
Article in Journal/Newspaper |
author |
Lambert, C. Authier, M. Doray, M. Dorémus, G. Spitz, J. Ridoux, V. |
author_facet |
Lambert, C. Authier, M. Doray, M. Dorémus, G. Spitz, J. Ridoux, V. |
author_sort |
Lambert, C. |
title |
Decadal stability in top predator habitat preferences in the Bay of Biscay |
title_short |
Decadal stability in top predator habitat preferences in the Bay of Biscay |
title_full |
Decadal stability in top predator habitat preferences in the Bay of Biscay |
title_fullStr |
Decadal stability in top predator habitat preferences in the Bay of Biscay |
title_full_unstemmed |
Decadal stability in top predator habitat preferences in the Bay of Biscay |
title_sort |
decadal stability in top predator habitat preferences in the bay of biscay |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.archives-ouvertes.fr/hal-02264538 https://doi.org/10.1016/j.pocean.2018.03.007 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0079-6611 Progress in Oceanography https://hal.archives-ouvertes.fr/hal-02264538 Progress in Oceanography, Elsevier, 2018, 166, pp.109-120. ⟨10.1016/j.pocean.2018.03.007⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pocean.2018.03.007 hal-02264538 https://hal.archives-ouvertes.fr/hal-02264538 doi:10.1016/j.pocean.2018.03.007 |
op_doi |
https://doi.org/10.1016/j.pocean.2018.03.007 |
container_title |
Progress in Oceanography |
container_volume |
166 |
container_start_page |
109 |
op_container_end_page |
120 |
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1766134775106502656 |