Lessons from seabird conservation in Alaskan longline fisheries
Although bycatch of seabirds and other long‐lived species is a critical conservation issue in world fisheries, case studies documenting significant reductions in the mortality of these low‐productivity species in a fishery are rare. We studied progress toward seabird conservation in the Alaskan long...
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ftpubmed:oai:pubmedcentral.nih.gov:6850691 2023-05-15T16:18:34+02:00 Lessons from seabird conservation in Alaskan longline fisheries Melvin, Edward F. Dietrich, Kimberly S. Suryan, Robert M. Fitzgerald, Shannon M. 2019-02-15 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6850691/ http://www.ncbi.nlm.nih.gov/pubmed/30689227 https://doi.org/10.1111/cobi.13288 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6850691/ http://www.ncbi.nlm.nih.gov/pubmed/30689227 http://dx.doi.org/10.1111/cobi.13288 © 2019 The Authors. Conservation Biology published by Wiley Periodicals, Inc. on behalf of Society for Conservation Biology. This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. CC-BY-NC-ND Contributed Papers Text 2019 ftpubmed https://doi.org/10.1111/cobi.13288 2019-11-24T01:34:26Z Although bycatch of seabirds and other long‐lived species is a critical conservation issue in world fisheries, case studies documenting significant reductions in the mortality of these low‐productivity species in a fishery are rare. We studied progress toward seabird conservation in the Alaskan longline fisheries, one of the largest and most diverse demersal fisheries. We generated annual seabird bycatch rates in 4 target fisheries and all fisheries combined from 23 years of fisheries observer data. We used 0‐inflated negative binomial models to evaluate variables influencing seabird bycatch per unit effort (BPUE) in 2 target fisheries. Following adoption of streamer lines, at first voluntarily and then mandatorily, seabird BPUE was reduced by 77–90%, preventing mortality of thousands of birds per year. Despite this, BPUE increased significantly in 2 of 4 target fisheries since streamer lines were adopted. Although night setting yielded significant reductions (74–97%) in seabird BPUE and significant increases (7–11%) in fish catch per unit effort over daytime setting, nighttime setting increased the BPUE of Northern Fulmar (Fulmarus glacialis) by 40% and nontarget fish species by 5–17%. Thus, best practices to prevent seabird mortalities in longline fisheries varied by species assemblage and fishery. Our results inform global efforts toward fisheries bycatch reduction by illustrating that successful conservation requires fishery‐specific solutions, strong industry support, constant vigilance in analysis and reporting observer data, and ongoing outreach to fleets, especially to vessels with anomalously high BPUE. Text Fulmarus glacialis Northern Fulmar PubMed Central (PMC) Fulmar ENVELOPE(-46.016,-46.016,-60.616,-60.616) Conservation Biology 33 4 842 852 |
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Contributed Papers Melvin, Edward F. Dietrich, Kimberly S. Suryan, Robert M. Fitzgerald, Shannon M. Lessons from seabird conservation in Alaskan longline fisheries |
topic_facet |
Contributed Papers |
description |
Although bycatch of seabirds and other long‐lived species is a critical conservation issue in world fisheries, case studies documenting significant reductions in the mortality of these low‐productivity species in a fishery are rare. We studied progress toward seabird conservation in the Alaskan longline fisheries, one of the largest and most diverse demersal fisheries. We generated annual seabird bycatch rates in 4 target fisheries and all fisheries combined from 23 years of fisheries observer data. We used 0‐inflated negative binomial models to evaluate variables influencing seabird bycatch per unit effort (BPUE) in 2 target fisheries. Following adoption of streamer lines, at first voluntarily and then mandatorily, seabird BPUE was reduced by 77–90%, preventing mortality of thousands of birds per year. Despite this, BPUE increased significantly in 2 of 4 target fisheries since streamer lines were adopted. Although night setting yielded significant reductions (74–97%) in seabird BPUE and significant increases (7–11%) in fish catch per unit effort over daytime setting, nighttime setting increased the BPUE of Northern Fulmar (Fulmarus glacialis) by 40% and nontarget fish species by 5–17%. Thus, best practices to prevent seabird mortalities in longline fisheries varied by species assemblage and fishery. Our results inform global efforts toward fisheries bycatch reduction by illustrating that successful conservation requires fishery‐specific solutions, strong industry support, constant vigilance in analysis and reporting observer data, and ongoing outreach to fleets, especially to vessels with anomalously high BPUE. |
format |
Text |
author |
Melvin, Edward F. Dietrich, Kimberly S. Suryan, Robert M. Fitzgerald, Shannon M. |
author_facet |
Melvin, Edward F. Dietrich, Kimberly S. Suryan, Robert M. Fitzgerald, Shannon M. |
author_sort |
Melvin, Edward F. |
title |
Lessons from seabird conservation in Alaskan longline fisheries |
title_short |
Lessons from seabird conservation in Alaskan longline fisheries |
title_full |
Lessons from seabird conservation in Alaskan longline fisheries |
title_fullStr |
Lessons from seabird conservation in Alaskan longline fisheries |
title_full_unstemmed |
Lessons from seabird conservation in Alaskan longline fisheries |
title_sort |
lessons from seabird conservation in alaskan longline fisheries |
publisher |
John Wiley and Sons Inc. |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6850691/ http://www.ncbi.nlm.nih.gov/pubmed/30689227 https://doi.org/10.1111/cobi.13288 |
long_lat |
ENVELOPE(-46.016,-46.016,-60.616,-60.616) |
geographic |
Fulmar |
geographic_facet |
Fulmar |
genre |
Fulmarus glacialis Northern Fulmar |
genre_facet |
Fulmarus glacialis Northern Fulmar |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6850691/ http://www.ncbi.nlm.nih.gov/pubmed/30689227 http://dx.doi.org/10.1111/cobi.13288 |
op_rights |
© 2019 The Authors. Conservation Biology published by Wiley Periodicals, Inc. on behalf of Society for Conservation Biology. This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1111/cobi.13288 |
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Conservation Biology |
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33 |
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4 |
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842 |
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852 |
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