The Role of Climate, Oceanography, and Prey in Driving Decadal Spatio-Temporal Patterns of a Highly Mobile Top Predator
International audience Marine mammals have been proposed as ecosystem sentinels due to their conspicuous nature, wide ranging distribution, and capacity to respond to changes in ecosystem structure and functioning. In southern European Atlantic waters, their response to climate variability has been...
Published in: | Frontiers in Marine Science |
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Online Access: | https://hal.archives-ouvertes.fr/hal-03440269 https://doi.org/10.3389/fmars.2021.665474 |
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ftccsdartic:oai:HAL:hal-03440269v1 2023-05-15T17:36:00+02:00 The Role of Climate, Oceanography, and Prey in Driving Decadal Spatio-Temporal Patterns of a Highly Mobile Top Predator Astarloa, Amaia Louzao, Maite Andrade, Joana Babey, Lucy Berrow, Simon Boisseau, Oliver Brereton, Tom Dorémus, Ghislain Evans, Peter Hodgins, Nicola Lewis, Mark Martinez-Cedeira, Jose Pinsky, Malin Ridoux, Vincent Saavedra, Camilo Santos, M. Begoña Thorson, James Waggitt, James Wall, Dave Chust, Guillem 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) 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) 2021-11-18 https://hal.archives-ouvertes.fr/hal-03440269 https://doi.org/10.3389/fmars.2021.665474 en eng HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2021.665474 hal-03440269 https://hal.archives-ouvertes.fr/hal-03440269 doi:10.3389/fmars.2021.665474 ISSN: 2296-7745 Frontiers in Marine Science https://hal.archives-ouvertes.fr/hal-03440269 Frontiers in Marine Science, Frontiers Media, 2021, 8 (665474), ⟨10.3389/fmars.2021.665474⟩ common dolphin center of gravity climate indices predator-prey environmental variability time series Bay of Biscay VAST [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2021 ftccsdartic https://doi.org/10.3389/fmars.2021.665474 2021-11-27T23:28:04Z International audience Marine mammals have been proposed as ecosystem sentinels due to their conspicuous nature, wide ranging distribution, and capacity to respond to changes in ecosystem structure and functioning. In southern European Atlantic waters, their response to climate variability has been little explored, partly because of the inherent difficulty of investigating higher trophic levels and long lifespan animals. Here, we analyzed spatio-temporal patterns from 1994 to 2018 of one of the most abundant cetaceans in the area, the common dolphin ( Delphinus delphis ), in order to (1) explore changes in its abundance and distribution, and (2) identify the underlying drivers. For that, we estimated the density of the species and the center of gravity of its distribution in the Bay of Biscay (BoB) and tested the effect of three sets of potential drivers (climate indices, oceanographic conditions, and prey biomasses) with a Vector Autoregressive Spatio Temporal (VAST) model that accounts for changes in sampling effort resulting from the combination of multiple datasets. Our results showed that the common dolphin significantly increased in abundance in the BoB during the study period. These changes were best explained by climate indices such as the North Atlantic Oscillation (NAO) and by prey species biomass. Oceanographic variables such as chlorophyll a concentration and temperature were less useful or not related. In addition, we found high variability in the geographic center of gravity of the species within the study region, with shifts between the inner (southeast) and the outer (northwest) part of the BoB, although the majority of this variability could not be attributed to the drivers considered in the study. Overall, these findings indicate that considering temperature alone for projecting spatio-temporal patterns of highly mobile predators is insufficient in this region and suggest important influences from prey and climate indices that integrate multiple ecological influences. Further integration of ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Frontiers in Marine Science 8 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
common dolphin center of gravity climate indices predator-prey environmental variability time series Bay of Biscay VAST [SDE]Environmental Sciences |
spellingShingle |
common dolphin center of gravity climate indices predator-prey environmental variability time series Bay of Biscay VAST [SDE]Environmental Sciences Astarloa, Amaia Louzao, Maite Andrade, Joana Babey, Lucy Berrow, Simon Boisseau, Oliver Brereton, Tom Dorémus, Ghislain Evans, Peter Hodgins, Nicola Lewis, Mark Martinez-Cedeira, Jose Pinsky, Malin Ridoux, Vincent Saavedra, Camilo Santos, M. Begoña Thorson, James Waggitt, James Wall, Dave Chust, Guillem The Role of Climate, Oceanography, and Prey in Driving Decadal Spatio-Temporal Patterns of a Highly Mobile Top Predator |
topic_facet |
common dolphin center of gravity climate indices predator-prey environmental variability time series Bay of Biscay VAST [SDE]Environmental Sciences |
description |
International audience Marine mammals have been proposed as ecosystem sentinels due to their conspicuous nature, wide ranging distribution, and capacity to respond to changes in ecosystem structure and functioning. In southern European Atlantic waters, their response to climate variability has been little explored, partly because of the inherent difficulty of investigating higher trophic levels and long lifespan animals. Here, we analyzed spatio-temporal patterns from 1994 to 2018 of one of the most abundant cetaceans in the area, the common dolphin ( Delphinus delphis ), in order to (1) explore changes in its abundance and distribution, and (2) identify the underlying drivers. For that, we estimated the density of the species and the center of gravity of its distribution in the Bay of Biscay (BoB) and tested the effect of three sets of potential drivers (climate indices, oceanographic conditions, and prey biomasses) with a Vector Autoregressive Spatio Temporal (VAST) model that accounts for changes in sampling effort resulting from the combination of multiple datasets. Our results showed that the common dolphin significantly increased in abundance in the BoB during the study period. These changes were best explained by climate indices such as the North Atlantic Oscillation (NAO) and by prey species biomass. Oceanographic variables such as chlorophyll a concentration and temperature were less useful or not related. In addition, we found high variability in the geographic center of gravity of the species within the study region, with shifts between the inner (southeast) and the outer (northwest) part of the BoB, although the majority of this variability could not be attributed to the drivers considered in the study. Overall, these findings indicate that considering temperature alone for projecting spatio-temporal patterns of highly mobile predators is insufficient in this region and suggest important influences from prey and climate indices that integrate multiple ecological influences. Further integration of ... |
author2 |
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) 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) |
format |
Article in Journal/Newspaper |
author |
Astarloa, Amaia Louzao, Maite Andrade, Joana Babey, Lucy Berrow, Simon Boisseau, Oliver Brereton, Tom Dorémus, Ghislain Evans, Peter Hodgins, Nicola Lewis, Mark Martinez-Cedeira, Jose Pinsky, Malin Ridoux, Vincent Saavedra, Camilo Santos, M. Begoña Thorson, James Waggitt, James Wall, Dave Chust, Guillem |
author_facet |
Astarloa, Amaia Louzao, Maite Andrade, Joana Babey, Lucy Berrow, Simon Boisseau, Oliver Brereton, Tom Dorémus, Ghislain Evans, Peter Hodgins, Nicola Lewis, Mark Martinez-Cedeira, Jose Pinsky, Malin Ridoux, Vincent Saavedra, Camilo Santos, M. Begoña Thorson, James Waggitt, James Wall, Dave Chust, Guillem |
author_sort |
Astarloa, Amaia |
title |
The Role of Climate, Oceanography, and Prey in Driving Decadal Spatio-Temporal Patterns of a Highly Mobile Top Predator |
title_short |
The Role of Climate, Oceanography, and Prey in Driving Decadal Spatio-Temporal Patterns of a Highly Mobile Top Predator |
title_full |
The Role of Climate, Oceanography, and Prey in Driving Decadal Spatio-Temporal Patterns of a Highly Mobile Top Predator |
title_fullStr |
The Role of Climate, Oceanography, and Prey in Driving Decadal Spatio-Temporal Patterns of a Highly Mobile Top Predator |
title_full_unstemmed |
The Role of Climate, Oceanography, and Prey in Driving Decadal Spatio-Temporal Patterns of a Highly Mobile Top Predator |
title_sort |
role of climate, oceanography, and prey in driving decadal spatio-temporal patterns of a highly mobile top predator |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.archives-ouvertes.fr/hal-03440269 https://doi.org/10.3389/fmars.2021.665474 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 2296-7745 Frontiers in Marine Science https://hal.archives-ouvertes.fr/hal-03440269 Frontiers in Marine Science, Frontiers Media, 2021, 8 (665474), ⟨10.3389/fmars.2021.665474⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2021.665474 hal-03440269 https://hal.archives-ouvertes.fr/hal-03440269 doi:10.3389/fmars.2021.665474 |
op_doi |
https://doi.org/10.3389/fmars.2021.665474 |
container_title |
Frontiers in Marine Science |
container_volume |
8 |
_version_ |
1766135329926938624 |