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...
Published in: | Biological Conservation |
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Main Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2019
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Online Access: | https://orbit.dtu.dk/en/publications/b8186685-e037-49d4-ad5f-54ef35da8bbe https://doi.org/10.1016/j.biocon.2019.108278 https://backend.orbit.dtu.dk/ws/files/198584797/1_s2.0_S0006320719307025_main.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/b8186685-e037-49d4-ad5f-54ef35da8bbe 2024-09-09T19:46:51+00:00 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 Sigurðsson, Guðjón Már Glemarec, Gildas Hansen, Erpur Snær Kadin, Martina Kindt-Larsen, Lotte Mallory, Mark Merkel, Flemming Ravn Petersen, Aevar Provencher, Jennifer Bærum, Kim Magnus 2019 application/pdf https://orbit.dtu.dk/en/publications/b8186685-e037-49d4-ad5f-54ef35da8bbe https://doi.org/10.1016/j.biocon.2019.108278 https://backend.orbit.dtu.dk/ws/files/198584797/1_s2.0_S0006320719307025_main.pdf eng eng https://orbit.dtu.dk/en/publications/b8186685-e037-49d4-ad5f-54ef35da8bbe info:eu-repo/semantics/openAccess Christensen-Dalsgaard , S , Anker-Nilssen , T , Crawford , R , Bond , A , Sigurðsson , G M , Glemarec , G , Hansen , E S , Kadin , M , Kindt-Larsen , L , Mallory , M , Merkel , F R , Petersen , A , Provencher , J & Bærum , K M 2019 , ' What's the catch with lumpsuckers? A North Atlantic study of seabird bycatch in lumpsucker gillnet fisheries ' , Biological Conservation , vol. 240 , 108278 . https://doi.org/10.1016/j.biocon.2019.108278 Bycatch Cyclopterus lumpus Fisheries Gillnets North Atlantic Seabirds /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2019 ftdtupubl https://doi.org/10.1016/j.biocon.2019.108278 2024-07-15T23:49:10Z 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 Technical University of Denmark: DTU Orbit Norway Biological Conservation 240 108278 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Bycatch Cyclopterus lumpus Fisheries Gillnets North Atlantic Seabirds /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Bycatch Cyclopterus lumpus Fisheries Gillnets North Atlantic Seabirds /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Christensen-Dalsgaard, Signe Anker-Nilssen, Tycho Crawford, Rory Bond, Alexander Sigurðsson, Guðjón Már Glemarec, Gildas Hansen, Erpur Snær Kadin, Martina Kindt-Larsen, Lotte Mallory, Mark Merkel, Flemming Ravn 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 |
Bycatch Cyclopterus lumpus Fisheries Gillnets North Atlantic Seabirds /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
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 Sigurðsson, Guðjón Már Glemarec, Gildas Hansen, Erpur Snær Kadin, Martina Kindt-Larsen, Lotte Mallory, Mark Merkel, Flemming Ravn Petersen, Aevar Provencher, Jennifer Bærum, Kim Magnus |
author_facet |
Christensen-Dalsgaard, Signe Anker-Nilssen, Tycho Crawford, Rory Bond, Alexander Sigurðsson, Guðjón Már Glemarec, Gildas Hansen, Erpur Snær Kadin, Martina Kindt-Larsen, Lotte Mallory, Mark Merkel, Flemming Ravn 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 |
publishDate |
2019 |
url |
https://orbit.dtu.dk/en/publications/b8186685-e037-49d4-ad5f-54ef35da8bbe https://doi.org/10.1016/j.biocon.2019.108278 https://backend.orbit.dtu.dk/ws/files/198584797/1_s2.0_S0006320719307025_main.pdf |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_source |
Christensen-Dalsgaard , S , Anker-Nilssen , T , Crawford , R , Bond , A , Sigurðsson , G M , Glemarec , G , Hansen , E S , Kadin , M , Kindt-Larsen , L , Mallory , M , Merkel , F R , Petersen , A , Provencher , J & Bærum , K M 2019 , ' What's the catch with lumpsuckers? A North Atlantic study of seabird bycatch in lumpsucker gillnet fisheries ' , Biological Conservation , vol. 240 , 108278 . https://doi.org/10.1016/j.biocon.2019.108278 |
op_relation |
https://orbit.dtu.dk/en/publications/b8186685-e037-49d4-ad5f-54ef35da8bbe |
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_ |
1809916349293527040 |