Revisiting safe biological limits in fisheries
The appropriateness of three official fisheries management reference points used in the north-east Atlantic was investigated: (i) the smallest stock size that is still within safe biological limits (SSBpa), (ii) the maximum sustainable rate of exploitation (F-msy) and (iii) the age at first capture....
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ftistanbuluniv:oai:http://acikerisim.istanbul.edu.tr:20.500.12627/26972 2023-05-15T17:38:15+02:00 Revisiting safe biological limits in fisheries Froese, Rainer Demirel, Nazli Kleisner, Kristin Coro, Gianpaolo Helmholtz Association , , 839428 2021-03-03T10:05:26Z application/pdf https://hdl.handle.net/20.500.12627/26972 https://doi.org/10.1111/faf.12102 https://avesis.istanbul.edu.tr/api/publication/209892d2-2704-4212-b886-b8d3fa2ea8b6/file eng eng FISH AND FISHERIES Froese R., Coro G., Kleisner K., Demirel N., "Revisiting safe biological limits in fisheries", FISH AND FISHERIES, cilt.17, ss.193-209, 2016 1467-2960 vv_1032021 av_209892d2-2704-4212-b886-b8d3fa2ea8b6 http://hdl.handle.net/20.500.12627/26972 https://doi.org/10.1111/faf.12102 https://avesis.istanbul.edu.tr/api/publication/209892d2-2704-4212-b886-b8d3fa2ea8b6/file 17 193 209 BALIKÇILIK Su Ürünleri Tarımsal Bilimler Tarım ve Çevre Bilimleri (AGE) Bitki ve Hayvan Bilimleri Makale 2021 ftistanbuluniv https://doi.org/20.500.12627/26972 https://doi.org/10.1111/faf.12102 2022-08-10T13:13:43Z The appropriateness of three official fisheries management reference points used in the north-east Atlantic was investigated: (i) the smallest stock size that is still within safe biological limits (SSBpa), (ii) the maximum sustainable rate of exploitation (F-msy) and (iii) the age at first capture. As for (i), in 45% of the examined stocks, the official value for SSBpa was below the consensus estimates determined from three different methods. With respect to (ii), the official estimates of F-msy exceeded natural mortality M in 76% of the stocks, although M is widely regarded as natural upper limit for F-msy. And regarding (iii), the age at first capture was below the age at maturity in 74% of the stocks. No official estimates of the stock size (SSBmsy) that can produce the maximum sustainable yield (MSY) are available for the north-east Atlantic. An analysis of stocks from other areas confirmed that twice SSBpa provides a reasonable preliminary estimate. Comparing stock sizes in 2013 against this proxy showed that 88% were below the level that can produce MSY. Also, 52% of the stocks were outside of safe biological limits, and 12% were severely depleted. Fishing mortality in 2013 exceeded natural mortality in 73% of the stocks, including those that were severely depleted. These results point to the urgent need to re-assess fisheries reference points in the north-east Atlantic and to implement the regulations of the new European Common Fisheries Policy regarding sustainable fishing pressure, healthy stock sizes and adult age/size at first capture. Article in Journal/Newspaper North East Atlantic İstanbul Üniversitesi Açık Erişim Sistemi Fish and Fisheries 17 1 193 209 |
institution |
Open Polar |
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İstanbul Üniversitesi Açık Erişim Sistemi |
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ftistanbuluniv |
language |
English |
topic |
BALIKÇILIK Su Ürünleri Tarımsal Bilimler Tarım ve Çevre Bilimleri (AGE) Bitki ve Hayvan Bilimleri |
spellingShingle |
BALIKÇILIK Su Ürünleri Tarımsal Bilimler Tarım ve Çevre Bilimleri (AGE) Bitki ve Hayvan Bilimleri Froese, Rainer Demirel, Nazli Kleisner, Kristin Coro, Gianpaolo Revisiting safe biological limits in fisheries |
topic_facet |
BALIKÇILIK Su Ürünleri Tarımsal Bilimler Tarım ve Çevre Bilimleri (AGE) Bitki ve Hayvan Bilimleri |
description |
The appropriateness of three official fisheries management reference points used in the north-east Atlantic was investigated: (i) the smallest stock size that is still within safe biological limits (SSBpa), (ii) the maximum sustainable rate of exploitation (F-msy) and (iii) the age at first capture. As for (i), in 45% of the examined stocks, the official value for SSBpa was below the consensus estimates determined from three different methods. With respect to (ii), the official estimates of F-msy exceeded natural mortality M in 76% of the stocks, although M is widely regarded as natural upper limit for F-msy. And regarding (iii), the age at first capture was below the age at maturity in 74% of the stocks. No official estimates of the stock size (SSBmsy) that can produce the maximum sustainable yield (MSY) are available for the north-east Atlantic. An analysis of stocks from other areas confirmed that twice SSBpa provides a reasonable preliminary estimate. Comparing stock sizes in 2013 against this proxy showed that 88% were below the level that can produce MSY. Also, 52% of the stocks were outside of safe biological limits, and 12% were severely depleted. Fishing mortality in 2013 exceeded natural mortality in 73% of the stocks, including those that were severely depleted. These results point to the urgent need to re-assess fisheries reference points in the north-east Atlantic and to implement the regulations of the new European Common Fisheries Policy regarding sustainable fishing pressure, healthy stock sizes and adult age/size at first capture. |
author2 |
Helmholtz Association , , 839428 |
format |
Article in Journal/Newspaper |
author |
Froese, Rainer Demirel, Nazli Kleisner, Kristin Coro, Gianpaolo |
author_facet |
Froese, Rainer Demirel, Nazli Kleisner, Kristin Coro, Gianpaolo |
author_sort |
Froese, Rainer |
title |
Revisiting safe biological limits in fisheries |
title_short |
Revisiting safe biological limits in fisheries |
title_full |
Revisiting safe biological limits in fisheries |
title_fullStr |
Revisiting safe biological limits in fisheries |
title_full_unstemmed |
Revisiting safe biological limits in fisheries |
title_sort |
revisiting safe biological limits in fisheries |
publishDate |
2021 |
url |
https://hdl.handle.net/20.500.12627/26972 https://doi.org/10.1111/faf.12102 https://avesis.istanbul.edu.tr/api/publication/209892d2-2704-4212-b886-b8d3fa2ea8b6/file |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_relation |
FISH AND FISHERIES Froese R., Coro G., Kleisner K., Demirel N., "Revisiting safe biological limits in fisheries", FISH AND FISHERIES, cilt.17, ss.193-209, 2016 1467-2960 vv_1032021 av_209892d2-2704-4212-b886-b8d3fa2ea8b6 http://hdl.handle.net/20.500.12627/26972 https://doi.org/10.1111/faf.12102 https://avesis.istanbul.edu.tr/api/publication/209892d2-2704-4212-b886-b8d3fa2ea8b6/file 17 193 209 |
op_doi |
https://doi.org/20.500.12627/26972 https://doi.org/10.1111/faf.12102 |
container_title |
Fish and Fisheries |
container_volume |
17 |
container_issue |
1 |
container_start_page |
193 |
op_container_end_page |
209 |
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1766138634867572736 |