Decadal stability in top predator habitat preferences in the Bay of Biscay
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 per...
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ftarchimer:oai:archimer.ifremer.fr:54226 2023-05-15T17:35:24+02:00 Decadal stability in top predator habitat preferences in the Bay of Biscay Lambert, C. Authier, M. Doray, Mathieu Doremus, G. Spitz, J. Ridoux, V. 2018-09 application/pdf https://archimer.ifremer.fr/doc/00431/54226/55549.pdf https://doi.org/10.1016/j.pocean.2018.03.007 https://archimer.ifremer.fr/doc/00431/54226/ eng eng Pergamon-elsevier Science Ltd https://archimer.ifremer.fr/doc/00431/54226/55549.pdf doi:10.1016/j.pocean.2018.03.007 https://archimer.ifremer.fr/doc/00431/54226/ 2018 Elsevier Ltd. All rights reserved. info:eu-repo/semantics/openAccess restricted use Progress In Oceanography (0079-6611) (Pergamon-elsevier Science Ltd), 2018-09 , Vol. 166 , P. 109-120 Habitat preference Temporal variability Cetaceans Seabirds North Atlantic Bay of Biscay text Publication info:eu-repo/semantics/article 2018 ftarchimer https://doi.org/10.1016/j.pocean.2018.03.007 2021-09-23T20:30:49Z 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 Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Progress in Oceanography 166 109 120 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Habitat preference Temporal variability Cetaceans Seabirds North Atlantic Bay of Biscay |
spellingShingle |
Habitat preference Temporal variability Cetaceans Seabirds North Atlantic Bay of Biscay Lambert, C. Authier, M. Doray, Mathieu Doremus, G. Spitz, J. Ridoux, V. Decadal stability in top predator habitat preferences in the Bay of Biscay |
topic_facet |
Habitat preference Temporal variability Cetaceans Seabirds North Atlantic Bay of Biscay |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Lambert, C. Authier, M. Doray, Mathieu Doremus, G. Spitz, J. Ridoux, V. |
author_facet |
Lambert, C. Authier, M. Doray, Mathieu Doremus, 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 |
Pergamon-elsevier Science Ltd |
publishDate |
2018 |
url |
https://archimer.ifremer.fr/doc/00431/54226/55549.pdf https://doi.org/10.1016/j.pocean.2018.03.007 https://archimer.ifremer.fr/doc/00431/54226/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Progress In Oceanography (0079-6611) (Pergamon-elsevier Science Ltd), 2018-09 , Vol. 166 , P. 109-120 |
op_relation |
https://archimer.ifremer.fr/doc/00431/54226/55549.pdf doi:10.1016/j.pocean.2018.03.007 https://archimer.ifremer.fr/doc/00431/54226/ |
op_rights |
2018 Elsevier Ltd. All rights reserved. info:eu-repo/semantics/openAccess restricted use |
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 |
_version_ |
1766134569045590016 |