Alongside but separate: Sympatric baleen whales choose different habitat conditions in São Miguel, Azores
International audience Fin whales and sei whales are two migratory baleen whale species sighted every year across the waters of the Azores. Improved understanding of the ecological niche and habitat requirements of these baleen whales is needed to identify persistent or predictable oceanographic eve...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Online Access: | https://hal.univ-brest.fr/hal-04160087 https://hal.univ-brest.fr/hal-04160087/document https://hal.univ-brest.fr/hal-04160087/file/Alongside%20but%20separate%20Sympatric%20baleen%20whales.pdf https://doi.org/10.1016/j.dsr.2022.103766 |
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ftanrparis:oai:HAL:hal-04160087v1 2023-12-17T10:27:44+01:00 Alongside but separate: Sympatric baleen whales choose different habitat conditions in São Miguel, Azores González García, Laura Pierce, Graham, J Autret, Emmanuelle Torres-Palenzuela, Jesús, M Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) ANR-17-EURE-0015,ISBlue,Interdisciplinary Graduate School for the Blue planet(2017) 2022-04-02 https://hal.univ-brest.fr/hal-04160087 https://hal.univ-brest.fr/hal-04160087/document https://hal.univ-brest.fr/hal-04160087/file/Alongside%20but%20separate%20Sympatric%20baleen%20whales.pdf https://doi.org/10.1016/j.dsr.2022.103766 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr.2022.103766 hal-04160087 https://hal.univ-brest.fr/hal-04160087 https://hal.univ-brest.fr/hal-04160087/document https://hal.univ-brest.fr/hal-04160087/file/Alongside%20but%20separate%20Sympatric%20baleen%20whales.pdf doi:10.1016/j.dsr.2022.103766 info:eu-repo/semantics/OpenAccess ISSN: 0967-0637 Deep Sea Research Part I: Oceanographic Research Papers https://hal.univ-brest.fr/hal-04160087 Deep Sea Research Part I: Oceanographic Research Papers, 2022, 184 (Article number 103766), ⟨10.1016/j.dsr.2022.103766⟩ Azores Baleen whales GAMs Habitat selection Marine mammals Modelling [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2022 ftanrparis https://doi.org/10.1016/j.dsr.2022.103766 2023-11-18T22:28:16Z International audience Fin whales and sei whales are two migratory baleen whale species sighted every year across the waters of the Azores. Improved understanding of the ecological niche and habitat requirements of these baleen whales is needed to identify persistent or predictable oceanographic events that may set the time of their migration, as well as local or ephemeral oceanographic features that may aggregate their prey in a particular area. In dynamic environments such as the open ocean, mesoscale and submesoscale features can become decisive to determine the distributions of highly mobile species such as baleen whales. In this study, we analyse the habitat preferences of fin whales and sei whales around São Miguel Island (Azores) using environmental variables at different temporal and spatial scales. For both species, model results showed a clear influence of variables linked with primary production and therefore, prey availability; as well as a noticeable preference for oceanographically dynamic areas which directly affect distribution and aggregation of prey. Those environmental choices may indicate different levels of foraging habitat use for both species. Differences were found between the species, highlighting preferences for colder waters in fin whales and areas with stronger sea surface temperature gradients in sei whales. Model results obtained for fin whales were similar with those previously published for blue whales, suggesting that both species make similar use of the waters around São Miguel, often foraging during the migration across these waters. Results for sei whale, however, emphasize dynamic variables, indicating that travelling may prevail over feeding behaviour during their migration by the Azores. Article in Journal/Newspaper baleen whale baleen whales Sei Whale Portail HAL-ANR (Agence Nationale de la Recherche) Deep Sea Research Part I: Oceanographic Research Papers 184 103766 |
institution |
Open Polar |
collection |
Portail HAL-ANR (Agence Nationale de la Recherche) |
op_collection_id |
ftanrparis |
language |
English |
topic |
Azores Baleen whales GAMs Habitat selection Marine mammals Modelling [SDE]Environmental Sciences |
spellingShingle |
Azores Baleen whales GAMs Habitat selection Marine mammals Modelling [SDE]Environmental Sciences González García, Laura Pierce, Graham, J Autret, Emmanuelle Torres-Palenzuela, Jesús, M Alongside but separate: Sympatric baleen whales choose different habitat conditions in São Miguel, Azores |
topic_facet |
Azores Baleen whales GAMs Habitat selection Marine mammals Modelling [SDE]Environmental Sciences |
description |
International audience Fin whales and sei whales are two migratory baleen whale species sighted every year across the waters of the Azores. Improved understanding of the ecological niche and habitat requirements of these baleen whales is needed to identify persistent or predictable oceanographic events that may set the time of their migration, as well as local or ephemeral oceanographic features that may aggregate their prey in a particular area. In dynamic environments such as the open ocean, mesoscale and submesoscale features can become decisive to determine the distributions of highly mobile species such as baleen whales. In this study, we analyse the habitat preferences of fin whales and sei whales around São Miguel Island (Azores) using environmental variables at different temporal and spatial scales. For both species, model results showed a clear influence of variables linked with primary production and therefore, prey availability; as well as a noticeable preference for oceanographically dynamic areas which directly affect distribution and aggregation of prey. Those environmental choices may indicate different levels of foraging habitat use for both species. Differences were found between the species, highlighting preferences for colder waters in fin whales and areas with stronger sea surface temperature gradients in sei whales. Model results obtained for fin whales were similar with those previously published for blue whales, suggesting that both species make similar use of the waters around São Miguel, often foraging during the migration across these waters. Results for sei whale, however, emphasize dynamic variables, indicating that travelling may prevail over feeding behaviour during their migration by the Azores. |
author2 |
Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) ANR-17-EURE-0015,ISBlue,Interdisciplinary Graduate School for the Blue planet(2017) |
format |
Article in Journal/Newspaper |
author |
González García, Laura Pierce, Graham, J Autret, Emmanuelle Torres-Palenzuela, Jesús, M |
author_facet |
González García, Laura Pierce, Graham, J Autret, Emmanuelle Torres-Palenzuela, Jesús, M |
author_sort |
González García, Laura |
title |
Alongside but separate: Sympatric baleen whales choose different habitat conditions in São Miguel, Azores |
title_short |
Alongside but separate: Sympatric baleen whales choose different habitat conditions in São Miguel, Azores |
title_full |
Alongside but separate: Sympatric baleen whales choose different habitat conditions in São Miguel, Azores |
title_fullStr |
Alongside but separate: Sympatric baleen whales choose different habitat conditions in São Miguel, Azores |
title_full_unstemmed |
Alongside but separate: Sympatric baleen whales choose different habitat conditions in São Miguel, Azores |
title_sort |
alongside but separate: sympatric baleen whales choose different habitat conditions in são miguel, azores |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.univ-brest.fr/hal-04160087 https://hal.univ-brest.fr/hal-04160087/document https://hal.univ-brest.fr/hal-04160087/file/Alongside%20but%20separate%20Sympatric%20baleen%20whales.pdf https://doi.org/10.1016/j.dsr.2022.103766 |
genre |
baleen whale baleen whales Sei Whale |
genre_facet |
baleen whale baleen whales Sei Whale |
op_source |
ISSN: 0967-0637 Deep Sea Research Part I: Oceanographic Research Papers https://hal.univ-brest.fr/hal-04160087 Deep Sea Research Part I: Oceanographic Research Papers, 2022, 184 (Article number 103766), ⟨10.1016/j.dsr.2022.103766⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr.2022.103766 hal-04160087 https://hal.univ-brest.fr/hal-04160087 https://hal.univ-brest.fr/hal-04160087/document https://hal.univ-brest.fr/hal-04160087/file/Alongside%20but%20separate%20Sympatric%20baleen%20whales.pdf doi:10.1016/j.dsr.2022.103766 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.dsr.2022.103766 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
184 |
container_start_page |
103766 |
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