Seasonal distribution and abundance of cetaceans within French waters- Part I: The North-Western Mediterranean, including the Pelagos sanctuary
International audience The biodiversity of the Mediterranean Sea is undergoing important changes. Cetaceans, as top predators, are animportant component of marine ecosystems. The seasonal distribution and abundance of several cetaceanspecies were studied with a large aerial survey over the North-Wes...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Online Access: | https://hal.science/hal-01510161 https://doi.org/10.1016/j.dsr2.2016.12.011 |
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ftunivrochelle:oai:HAL:hal-01510161v1 2024-02-11T10:03:48+01:00 Seasonal distribution and abundance of cetaceans within French waters- Part I: The North-Western Mediterranean, including the Pelagos sanctuary Laran, Sophie Pettex, Emeline Authier, Matthieu Blanck, Aurélie David, Lea Dorémus, Ghislain Falchetto, Hélène Monestiez, Pascal, P. van Canneyt, Olivier Ridoux, Vincent Observatoire pour la Conservation de la Mégafaune Marine (PELAGIS) LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Agence des Aires Marines Protégées EcoOcéan Institut France Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) 2017 https://hal.science/hal-01510161 https://doi.org/10.1016/j.dsr2.2016.12.011 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2016.12.011 hal-01510161 https://hal.science/hal-01510161 doi:10.1016/j.dsr2.2016.12.011 ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.science/hal-01510161 Deep Sea Research Part II: Topical Studies in Oceanography, 2017, 141, pp.20-30. ⟨10.1016/j.dsr2.2016.12.011⟩ Sea Mediterranean Cetaceans Striped dolphin Common bottlenose dolphin Fin whale Aerial survey Pelagos sanctuary [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2017 ftunivrochelle https://doi.org/10.1016/j.dsr2.2016.12.011 2024-01-23T23:35:36Z International audience The biodiversity of the Mediterranean Sea is undergoing important changes. Cetaceans, as top predators, are animportant component of marine ecosystems. The seasonal distribution and abundance of several cetaceanspecies were studied with a large aerial survey over the North-Western Mediterranean Sea, including theinternational Pelagos sanctuary, the largest Marine Protected Area (MPA) designed for marine mammals in theMediterranean. A total of 8 distinct species of cetaceans were identified, and their occurrence within thesanctuary was investigated. Abundance estimates were obtained for three groups of species: the smalldelphinids (striped dolphins mainly), the bottlenose dolphin and the fin whale. There was a seasonal variationin striped dolphin abundance between winter (57,300 individuals, 95% CI: 34,500–102,000) and summer(130,000, 95% CI: 76,800–222,100). In contrast, bottlenose dolphin winter abundance was thrice that ofsummer. It was also the only species to exhibit any preference for the Pelagos sanctuary. Fin whale abundancehad the reverse pattern with winter abundance (1000 individuals, 95% CI: 500–2500) and summer (2500individuals, 95% CI: 1500–4300), without any preference for the sanctuary. Risso's dolphins, pilot whales andsperm whales did not exhibit strong seasonal pattern in their abundance. These results provide baselineestimates which can be used to inform conservation policies and instruments such as the Habitats Directive orthe recent European Marine Strategy Framework Directive. Article in Journal/Newspaper Fin whale HAL - Université de La Rochelle Deep Sea Research Part II: Topical Studies in Oceanography 141 20 30 |
institution |
Open Polar |
collection |
HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
English |
topic |
Sea Mediterranean Cetaceans Striped dolphin Common bottlenose dolphin Fin whale Aerial survey Pelagos sanctuary [SDE]Environmental Sciences |
spellingShingle |
Sea Mediterranean Cetaceans Striped dolphin Common bottlenose dolphin Fin whale Aerial survey Pelagos sanctuary [SDE]Environmental Sciences Laran, Sophie Pettex, Emeline Authier, Matthieu Blanck, Aurélie David, Lea Dorémus, Ghislain Falchetto, Hélène Monestiez, Pascal, P. van Canneyt, Olivier Ridoux, Vincent Seasonal distribution and abundance of cetaceans within French waters- Part I: The North-Western Mediterranean, including the Pelagos sanctuary |
topic_facet |
Sea Mediterranean Cetaceans Striped dolphin Common bottlenose dolphin Fin whale Aerial survey Pelagos sanctuary [SDE]Environmental Sciences |
description |
International audience The biodiversity of the Mediterranean Sea is undergoing important changes. Cetaceans, as top predators, are animportant component of marine ecosystems. The seasonal distribution and abundance of several cetaceanspecies were studied with a large aerial survey over the North-Western Mediterranean Sea, including theinternational Pelagos sanctuary, the largest Marine Protected Area (MPA) designed for marine mammals in theMediterranean. A total of 8 distinct species of cetaceans were identified, and their occurrence within thesanctuary was investigated. Abundance estimates were obtained for three groups of species: the smalldelphinids (striped dolphins mainly), the bottlenose dolphin and the fin whale. There was a seasonal variationin striped dolphin abundance between winter (57,300 individuals, 95% CI: 34,500–102,000) and summer(130,000, 95% CI: 76,800–222,100). In contrast, bottlenose dolphin winter abundance was thrice that ofsummer. It was also the only species to exhibit any preference for the Pelagos sanctuary. Fin whale abundancehad the reverse pattern with winter abundance (1000 individuals, 95% CI: 500–2500) and summer (2500individuals, 95% CI: 1500–4300), without any preference for the sanctuary. Risso's dolphins, pilot whales andsperm whales did not exhibit strong seasonal pattern in their abundance. These results provide baselineestimates which can be used to inform conservation policies and instruments such as the Habitats Directive orthe recent European Marine Strategy Framework Directive. |
author2 |
Observatoire pour la Conservation de la Mégafaune Marine (PELAGIS) LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Agence des Aires Marines Protégées EcoOcéan Institut France Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Laran, Sophie Pettex, Emeline Authier, Matthieu Blanck, Aurélie David, Lea Dorémus, Ghislain Falchetto, Hélène Monestiez, Pascal, P. van Canneyt, Olivier Ridoux, Vincent |
author_facet |
Laran, Sophie Pettex, Emeline Authier, Matthieu Blanck, Aurélie David, Lea Dorémus, Ghislain Falchetto, Hélène Monestiez, Pascal, P. van Canneyt, Olivier Ridoux, Vincent |
author_sort |
Laran, Sophie |
title |
Seasonal distribution and abundance of cetaceans within French waters- Part I: The North-Western Mediterranean, including the Pelagos sanctuary |
title_short |
Seasonal distribution and abundance of cetaceans within French waters- Part I: The North-Western Mediterranean, including the Pelagos sanctuary |
title_full |
Seasonal distribution and abundance of cetaceans within French waters- Part I: The North-Western Mediterranean, including the Pelagos sanctuary |
title_fullStr |
Seasonal distribution and abundance of cetaceans within French waters- Part I: The North-Western Mediterranean, including the Pelagos sanctuary |
title_full_unstemmed |
Seasonal distribution and abundance of cetaceans within French waters- Part I: The North-Western Mediterranean, including the Pelagos sanctuary |
title_sort |
seasonal distribution and abundance of cetaceans within french waters- part i: the north-western mediterranean, including the pelagos sanctuary |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.science/hal-01510161 https://doi.org/10.1016/j.dsr2.2016.12.011 |
genre |
Fin whale |
genre_facet |
Fin whale |
op_source |
ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.science/hal-01510161 Deep Sea Research Part II: Topical Studies in Oceanography, 2017, 141, pp.20-30. ⟨10.1016/j.dsr2.2016.12.011⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2016.12.011 hal-01510161 https://hal.science/hal-01510161 doi:10.1016/j.dsr2.2016.12.011 |
op_doi |
https://doi.org/10.1016/j.dsr2.2016.12.011 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
141 |
container_start_page |
20 |
op_container_end_page |
30 |
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1790600125371908096 |