What’s the catch with lumpsuckers? A North Atlantic study of seabird bycatch in lumpsucker gillnet fisheries
Worldwide, incidental bycatch in fisheries is a conservation threat to many seabird species. Although knowledge on bycatch of seabirds has increased in the last decade, most stems from longline fisheries and the impacts of coastal gillnet fisheries are poorly understood. Gillnet fishing for North At...
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Enheten för miljöforskning och övervakning
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-3369 https://doi.org/10.1016/j.biocon.2019.108278 |
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ftnrm:oai:DiVA.org:nrm-3369 2023-05-15T16:48:49+02:00 What’s the catch with lumpsuckers? A North Atlantic study of seabird bycatch in lumpsucker gillnet fisheries Christensen-Dalsgaard, Signe Anker-Nilssen, Tycho Crawford, Rory Bond, Alexander Már Sigurðsson, Guðjón Glemarec, Gildas Snær Hansen, Erpur Kadin, Martina Kindt-Larsen, Lotte Mallory, Mark Ravn Merkel, Flemming Petersen, Aevar Provencher, Jennifer Bærum, Kim Magnus 2019 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-3369 https://doi.org/10.1016/j.biocon.2019.108278 eng eng Enheten för miljöforskning och övervakning Biological Conservation, 0006-3207, 2019, 240, http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-3369 doi:10.1016/j.biocon.2019.108278 info:eu-repo/semantics/openAccess Environmental Sciences Miljövetenskap Fish and Wildlife Management Vilt- och fiskeförvaltning Article in journal info:eu-repo/semantics/article text 2019 ftnrm https://doi.org/10.1016/j.biocon.2019.108278 2021-10-08T07:21:19Z Worldwide, incidental bycatch in fisheries is a conservation threat to many seabird species. Although knowledge on bycatch of seabirds has increased in the last decade, most stems from longline fisheries and the impacts of coastal gillnet fisheries are poorly understood. Gillnet fishing for North Atlantic lumpsucker (Cyclopterus lumpus) is one such fishery. We collated and synthesized the available information on seabird bycatch in lumpsucker gillnet fisheries across the entire geographical range to estimate and infer the magnitude of their impact on the affected seabird populations. Most birds killed were diving ducks, cormorants and auks, and each year locally high numbers of seabirds were taken as bycatch. We found large differences in bycatch rates among countries. The estimated mean bycatch in Iceland was 2.43 birds/trip, while the estimates in Norway was 0.44 and 0.39 birds/trip, respectively. The large disparities between estimates might reflect large spatial differences in bycatch rates, but could partly also arise due to distinctions in data recorded by onboard inspectors (Iceland), self-administered registration (Norway) and direct observations by cameras (Denmark). We show that lumpsucker gillnet fisheries might pose a significant risk to some populations of diving seabirds. However, a distinct data deficiency on seabird bycatch in terms of spatio-temporal coverage and the age and origins of the birds killed, limited our abilities to fully assess the extent and population consequences of the bycatch. Our results highlight the need for a joint effort among countries to standardize monitoring methods to better document the impact of these fisheries on seabirds. Article in Journal/Newspaper Iceland North Atlantic Swedish Museum of Natural History: Publications (DiVA) Norway Biological Conservation 240 108278 |
institution |
Open Polar |
collection |
Swedish Museum of Natural History: Publications (DiVA) |
op_collection_id |
ftnrm |
language |
English |
topic |
Environmental Sciences Miljövetenskap Fish and Wildlife Management Vilt- och fiskeförvaltning |
spellingShingle |
Environmental Sciences Miljövetenskap Fish and Wildlife Management Vilt- och fiskeförvaltning Christensen-Dalsgaard, Signe Anker-Nilssen, Tycho Crawford, Rory Bond, Alexander Már Sigurðsson, Guðjón Glemarec, Gildas Snær Hansen, Erpur Kadin, Martina Kindt-Larsen, Lotte Mallory, Mark Ravn Merkel, Flemming Petersen, Aevar Provencher, Jennifer Bærum, Kim Magnus What’s the catch with lumpsuckers? A North Atlantic study of seabird bycatch in lumpsucker gillnet fisheries |
topic_facet |
Environmental Sciences Miljövetenskap Fish and Wildlife Management Vilt- och fiskeförvaltning |
description |
Worldwide, incidental bycatch in fisheries is a conservation threat to many seabird species. Although knowledge on bycatch of seabirds has increased in the last decade, most stems from longline fisheries and the impacts of coastal gillnet fisheries are poorly understood. Gillnet fishing for North Atlantic lumpsucker (Cyclopterus lumpus) is one such fishery. We collated and synthesized the available information on seabird bycatch in lumpsucker gillnet fisheries across the entire geographical range to estimate and infer the magnitude of their impact on the affected seabird populations. Most birds killed were diving ducks, cormorants and auks, and each year locally high numbers of seabirds were taken as bycatch. We found large differences in bycatch rates among countries. The estimated mean bycatch in Iceland was 2.43 birds/trip, while the estimates in Norway was 0.44 and 0.39 birds/trip, respectively. The large disparities between estimates might reflect large spatial differences in bycatch rates, but could partly also arise due to distinctions in data recorded by onboard inspectors (Iceland), self-administered registration (Norway) and direct observations by cameras (Denmark). We show that lumpsucker gillnet fisheries might pose a significant risk to some populations of diving seabirds. However, a distinct data deficiency on seabird bycatch in terms of spatio-temporal coverage and the age and origins of the birds killed, limited our abilities to fully assess the extent and population consequences of the bycatch. Our results highlight the need for a joint effort among countries to standardize monitoring methods to better document the impact of these fisheries on seabirds. |
format |
Article in Journal/Newspaper |
author |
Christensen-Dalsgaard, Signe Anker-Nilssen, Tycho Crawford, Rory Bond, Alexander Már Sigurðsson, Guðjón Glemarec, Gildas Snær Hansen, Erpur Kadin, Martina Kindt-Larsen, Lotte Mallory, Mark Ravn Merkel, Flemming Petersen, Aevar Provencher, Jennifer Bærum, Kim Magnus |
author_facet |
Christensen-Dalsgaard, Signe Anker-Nilssen, Tycho Crawford, Rory Bond, Alexander Már Sigurðsson, Guðjón Glemarec, Gildas Snær Hansen, Erpur Kadin, Martina Kindt-Larsen, Lotte Mallory, Mark Ravn Merkel, Flemming Petersen, Aevar Provencher, Jennifer Bærum, Kim Magnus |
author_sort |
Christensen-Dalsgaard, Signe |
title |
What’s the catch with lumpsuckers? A North Atlantic study of seabird bycatch in lumpsucker gillnet fisheries |
title_short |
What’s the catch with lumpsuckers? A North Atlantic study of seabird bycatch in lumpsucker gillnet fisheries |
title_full |
What’s the catch with lumpsuckers? A North Atlantic study of seabird bycatch in lumpsucker gillnet fisheries |
title_fullStr |
What’s the catch with lumpsuckers? A North Atlantic study of seabird bycatch in lumpsucker gillnet fisheries |
title_full_unstemmed |
What’s the catch with lumpsuckers? A North Atlantic study of seabird bycatch in lumpsucker gillnet fisheries |
title_sort |
what’s the catch with lumpsuckers? a north atlantic study of seabird bycatch in lumpsucker gillnet fisheries |
publisher |
Enheten för miljöforskning och övervakning |
publishDate |
2019 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-3369 https://doi.org/10.1016/j.biocon.2019.108278 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_relation |
Biological Conservation, 0006-3207, 2019, 240, http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-3369 doi:10.1016/j.biocon.2019.108278 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.biocon.2019.108278 |
container_title |
Biological Conservation |
container_volume |
240 |
container_start_page |
108278 |
_version_ |
1766038920898805760 |