Small cetacean bycatch as estimated from stranding schemes: The common dolphin case in the northeast Atlantic
International audience Death in fishing gear of non-target species (called ‘bycatch’) is a major concern for marine wildlife, and mostly worrying for long-lived species like cetaceans, considering their demographic characteristics (slow population growth rates and low fecundity). In European waters,...
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Online Access: | https://hal.science/hal-01336905 https://doi.org/10.1016/j.envsci.2016.05.004 |
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ftunivnantes:oai:HAL:hal-01336905v1 2023-05-15T17:41:41+02:00 Small cetacean bycatch as estimated from stranding schemes: The common dolphin case in the northeast Atlantic Peltier, Hélène Authier, Matthieu Deaville, Rob Dabin, Willy Jepson, Paul D. van Canneyt, Olivier Daniel, Pierre 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) Institute of Zoology Zoological Society of London Météo-France Direction Interrégionale Sud-Est (DIRSE) Météo-France La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) 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) 2016 https://hal.science/hal-01336905 https://doi.org/10.1016/j.envsci.2016.05.004 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envsci.2016.05.004 hal-01336905 https://hal.science/hal-01336905 doi:10.1016/j.envsci.2016.05.004 ISSN: 1462-9011 Environmental Science and Policy https://hal.science/hal-01336905 Environmental Science and Policy, 2016, 63, pp.7-18. ⟨10.1016/j.envsci.2016.05.004⟩ Bycatch Drift modelling Common dolphins Observer programmes CE 812/2004 regulation Marine strategy framework directive [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2016 ftunivnantes https://doi.org/10.1016/j.envsci.2016.05.004 2023-03-08T07:06:30Z International audience Death in fishing gear of non-target species (called ‘bycatch’) is a major concern for marine wildlife, and mostly worrying for long-lived species like cetaceans, considering their demographic characteristics (slow population growth rates and low fecundity). In European waters, cetaceans are highly impacted by this phenomenon. Under the Common Fishery Policy, the EC 812/2004 regulation constitutes a legal frame for bycatch monitoring on 5–10% of fishing vessels >15 m. The aim of this work was to compare parameters and bycatch estimates of common dolphins (Delphinus delphis) provided by observer programmes in France and UK national reports and those inferred from stranding data, through two approaches. Bycatch was estimated from stranding data, first by correcting effectives from drift conditions (using a drift prediction model) and then by estimating the probability of being buoyant. Observer programmes on fishing vessels allowed us to identify the specificity of the interaction between common dolphins and fishing gear, and provided low estimates of annual bycaught animals (around 550 animals year−1). However, observer programmes are hindered by logistical and administrative constraints, and the sampling scheme seems to be poorly designed for the detection of marine mammal bycatches. The analyses of strandings by considering drift conditions highlighted areas with high levels of interactions between common dolphins and fisheries. Since 1997, the highest densities of bycaught dolphins at sea were located in the southern part of the continental shelf and slope of the Bay of Biscay. Bycatch numbers inferred from strandings suggested very high levels, ranging from 3650 dolphins year−1 [2250–7000] to 4700 [3850–5750] dolphins year−1, depending on methodological choices. The main advantage of stranding data is its large spatial scale, cutting across administrative boundaries. Diverging estimates between observer programmes and stranding interpretation can set very different management ... Article in Journal/Newspaper Northeast Atlantic Université de Nantes: HAL-UNIV-NANTES Environmental Science & Policy 63 7 18 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Bycatch Drift modelling Common dolphins Observer programmes CE 812/2004 regulation Marine strategy framework directive [SDE]Environmental Sciences |
spellingShingle |
Bycatch Drift modelling Common dolphins Observer programmes CE 812/2004 regulation Marine strategy framework directive [SDE]Environmental Sciences Peltier, Hélène Authier, Matthieu Deaville, Rob Dabin, Willy Jepson, Paul D. van Canneyt, Olivier Daniel, Pierre Ridoux, Vincent Small cetacean bycatch as estimated from stranding schemes: The common dolphin case in the northeast Atlantic |
topic_facet |
Bycatch Drift modelling Common dolphins Observer programmes CE 812/2004 regulation Marine strategy framework directive [SDE]Environmental Sciences |
description |
International audience Death in fishing gear of non-target species (called ‘bycatch’) is a major concern for marine wildlife, and mostly worrying for long-lived species like cetaceans, considering their demographic characteristics (slow population growth rates and low fecundity). In European waters, cetaceans are highly impacted by this phenomenon. Under the Common Fishery Policy, the EC 812/2004 regulation constitutes a legal frame for bycatch monitoring on 5–10% of fishing vessels >15 m. The aim of this work was to compare parameters and bycatch estimates of common dolphins (Delphinus delphis) provided by observer programmes in France and UK national reports and those inferred from stranding data, through two approaches. Bycatch was estimated from stranding data, first by correcting effectives from drift conditions (using a drift prediction model) and then by estimating the probability of being buoyant. Observer programmes on fishing vessels allowed us to identify the specificity of the interaction between common dolphins and fishing gear, and provided low estimates of annual bycaught animals (around 550 animals year−1). However, observer programmes are hindered by logistical and administrative constraints, and the sampling scheme seems to be poorly designed for the detection of marine mammal bycatches. The analyses of strandings by considering drift conditions highlighted areas with high levels of interactions between common dolphins and fisheries. Since 1997, the highest densities of bycaught dolphins at sea were located in the southern part of the continental shelf and slope of the Bay of Biscay. Bycatch numbers inferred from strandings suggested very high levels, ranging from 3650 dolphins year−1 [2250–7000] to 4700 [3850–5750] dolphins year−1, depending on methodological choices. The main advantage of stranding data is its large spatial scale, cutting across administrative boundaries. Diverging estimates between observer programmes and stranding interpretation can set very different management ... |
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) Institute of Zoology Zoological Society of London Météo-France Direction Interrégionale Sud-Est (DIRSE) Météo-France La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) 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 |
Peltier, Hélène Authier, Matthieu Deaville, Rob Dabin, Willy Jepson, Paul D. van Canneyt, Olivier Daniel, Pierre Ridoux, Vincent |
author_facet |
Peltier, Hélène Authier, Matthieu Deaville, Rob Dabin, Willy Jepson, Paul D. van Canneyt, Olivier Daniel, Pierre Ridoux, Vincent |
author_sort |
Peltier, Hélène |
title |
Small cetacean bycatch as estimated from stranding schemes: The common dolphin case in the northeast Atlantic |
title_short |
Small cetacean bycatch as estimated from stranding schemes: The common dolphin case in the northeast Atlantic |
title_full |
Small cetacean bycatch as estimated from stranding schemes: The common dolphin case in the northeast Atlantic |
title_fullStr |
Small cetacean bycatch as estimated from stranding schemes: The common dolphin case in the northeast Atlantic |
title_full_unstemmed |
Small cetacean bycatch as estimated from stranding schemes: The common dolphin case in the northeast Atlantic |
title_sort |
small cetacean bycatch as estimated from stranding schemes: the common dolphin case in the northeast atlantic |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.science/hal-01336905 https://doi.org/10.1016/j.envsci.2016.05.004 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
ISSN: 1462-9011 Environmental Science and Policy https://hal.science/hal-01336905 Environmental Science and Policy, 2016, 63, pp.7-18. ⟨10.1016/j.envsci.2016.05.004⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.envsci.2016.05.004 hal-01336905 https://hal.science/hal-01336905 doi:10.1016/j.envsci.2016.05.004 |
op_doi |
https://doi.org/10.1016/j.envsci.2016.05.004 |
container_title |
Environmental Science & Policy |
container_volume |
63 |
container_start_page |
7 |
op_container_end_page |
18 |
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1766143385860571136 |