Use of bird-borne radar to examine shearwater interactions with legal and illegal fisheries

Seabirds interact with fishing vessels to consume fishing discards and baits, sometimes resulting in incidental capture (bycatch) and the death of the bird, which has clear conservation implications. To understand seabird–fishery interactions at large spatiotemporal scales, researchers are increasin...

Descripción completa

Detalles Bibliográficos
Autores: Navarro Herrero, Leia, Saldanha, Sarah Delphine, Militão, Teresa, Vicente Sastre, Diego, March, David, González-Solís, Jacob
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Universidad de Oviedo (UNIOVI)
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:dnet:ubarcelona__::5d1011a2d220b8d5e1a009af2934ab78
Acceso en línea:https://hdl.handle.net/2445/229381
Access Level:acceso abierto
Palabra clave:Gestió de la pesca
Política pesquera
Ocells marins
Fishery management
Fishery policy
Sea birds
id ES_5d09b5e6a46fb8db162aafc671baf2be
oai_identifier_str oai:dnet:ubarcelona__::5d1011a2d220b8d5e1a009af2934ab78
network_acronym_str ES
network_name_str España
repository_id_str
spelling Use of bird-borne radar to examine shearwater interactions with legal and illegal fisheriesNavarro Herrero, LeiaSaldanha, Sarah DelphineMilitão, TeresaVicente Sastre, DiegoMarch, DavidGonzález-Solís, JacobGestió de la pescaPolítica pesqueraOcells marinsFishery managementFishery policySea birdsSeabirds interact with fishing vessels to consume fishing discards and baits, sometimes resulting in incidental capture (bycatch) and the death of the bird, which has clear conservation implications. To understand seabird–fishery interactions at large spatiotemporal scales, researchers are increasing their use of simultaneous seabird and fishing vessel tracking. However, vessel tracking data can contain gaps due to technical problems, illicit manipulation, or lack of adoption of tracking monitoring systems. These gaps might lead to underestimating the fishing effort and bycatch rates and jeopardize the effectiveness of marine conservation. We deployed bird-borne radar detector tags capable of recording radar signals from vessels. We placed tags on 88 shearwaters (Calonectris diomedea, Calonectris borealis, and Calonectris edwardsii) that forage in the northwestern Mediterranean Sea and the Canary Current Large Marine Ecosystem. We modeled vessel radar detections registered by the tags in relation to gridded automatic identification system (AIS) vessel tracking data to examine the spatiotemporal dynamics of seabird–vessel interactions and identify unreported fishing activity areas. Our models showed a moderate fit (area under the curve >0.7) to vessel tracking data, indicating a strong association of shearwaters to fishing vessels in major fishing grounds. Although in high-marine-traffic regions, radar detections were also driven by nonfishing vessels. The tags registered the presence of potential unregulated and unreported fishing vessels in West African waters, where merchant shipping is unusual but fishing activity is intense. Overall, bird-borne radar detectors showed areas and periods when the association of seabirds with legal and illegal fishing vessels was high. Bird-borne radar detectors could improve the focus of conservation efforts.Wiley2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/229381Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Dipòsit Digital de la UBinstname:Universidad de Oviedo (UNIOVI)InglésReproducció del document publicat a: https://doi.org/10.1111/cobi.14224Conservation Biology, 2023, vol. 38, num.3, p. e14224https://doi.org/10.1111/cobi.14224cc-by (c) Navarro Herrero, Leia et al., 2023https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:dnet:ubarcelona__::5d1011a2d220b8d5e1a009af2934ab782026-05-27T06:46:51Z
dc.title.none.fl_str_mv Use of bird-borne radar to examine shearwater interactions with legal and illegal fisheries
title Use of bird-borne radar to examine shearwater interactions with legal and illegal fisheries
spellingShingle Use of bird-borne radar to examine shearwater interactions with legal and illegal fisheries
Navarro Herrero, Leia
Gestió de la pesca
Política pesquera
Ocells marins
Fishery management
Fishery policy
Sea birds
title_short Use of bird-borne radar to examine shearwater interactions with legal and illegal fisheries
title_full Use of bird-borne radar to examine shearwater interactions with legal and illegal fisheries
title_fullStr Use of bird-borne radar to examine shearwater interactions with legal and illegal fisheries
title_full_unstemmed Use of bird-borne radar to examine shearwater interactions with legal and illegal fisheries
title_sort Use of bird-borne radar to examine shearwater interactions with legal and illegal fisheries
dc.creator.none.fl_str_mv Navarro Herrero, Leia
Saldanha, Sarah Delphine
Militão, Teresa
Vicente Sastre, Diego
March, David
González-Solís, Jacob
author Navarro Herrero, Leia
author_facet Navarro Herrero, Leia
Saldanha, Sarah Delphine
Militão, Teresa
Vicente Sastre, Diego
March, David
González-Solís, Jacob
author_role author
author2 Saldanha, Sarah Delphine
Militão, Teresa
Vicente Sastre, Diego
March, David
González-Solís, Jacob
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Gestió de la pesca
Política pesquera
Ocells marins
Fishery management
Fishery policy
Sea birds
topic Gestió de la pesca
Política pesquera
Ocells marins
Fishery management
Fishery policy
Sea birds
description Seabirds interact with fishing vessels to consume fishing discards and baits, sometimes resulting in incidental capture (bycatch) and the death of the bird, which has clear conservation implications. To understand seabird–fishery interactions at large spatiotemporal scales, researchers are increasing their use of simultaneous seabird and fishing vessel tracking. However, vessel tracking data can contain gaps due to technical problems, illicit manipulation, or lack of adoption of tracking monitoring systems. These gaps might lead to underestimating the fishing effort and bycatch rates and jeopardize the effectiveness of marine conservation. We deployed bird-borne radar detector tags capable of recording radar signals from vessels. We placed tags on 88 shearwaters (Calonectris diomedea, Calonectris borealis, and Calonectris edwardsii) that forage in the northwestern Mediterranean Sea and the Canary Current Large Marine Ecosystem. We modeled vessel radar detections registered by the tags in relation to gridded automatic identification system (AIS) vessel tracking data to examine the spatiotemporal dynamics of seabird–vessel interactions and identify unreported fishing activity areas. Our models showed a moderate fit (area under the curve >0.7) to vessel tracking data, indicating a strong association of shearwaters to fishing vessels in major fishing grounds. Although in high-marine-traffic regions, radar detections were also driven by nonfishing vessels. The tags registered the presence of potential unregulated and unreported fishing vessels in West African waters, where merchant shipping is unusual but fishing activity is intense. Overall, bird-borne radar detectors showed areas and periods when the association of seabirds with legal and illegal fishing vessels was high. Bird-borne radar detectors could improve the focus of conservation efforts.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/229381
url https://hdl.handle.net/2445/229381
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1111/cobi.14224
Conservation Biology, 2023, vol. 38, num.3, p. e14224
https://doi.org/10.1111/cobi.14224
dc.rights.none.fl_str_mv cc-by (c) Navarro Herrero, Leia et al., 2023
https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Navarro Herrero, Leia et al., 2023
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Dipòsit Digital de la UB
instname:Universidad de Oviedo (UNIOVI)
instname_str Universidad de Oviedo (UNIOVI)
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869408983378296832
score 15,812429

Similares en LA Referencia