Evaluating the effectiveness of real-time closures for reducing susceptibility of small fish to capture
Abstract Real-time spatial management in fisheries, a type of dynamic ocean management, uses nearly real-time data collection and dissemination to reduce susceptibility of certain species or age classes to being caught in mixed fisheries. However, as with many fisheries regulations, it is difficult...
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Oxford University Press (OUP)
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsx152 http://academic.oup.com/icesjms/article-pdf/75/1/298/31236849/fsx152.pdf |
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croxfordunivpr:10.1093/icesjms/fsx152 2024-06-09T07:44:39+00:00 Evaluating the effectiveness of real-time closures for reducing susceptibility of small fish to capture Woods, Pamela J Þór Elvarsson, Bjarki Sigurdsson, Thorsteinn Stefánsson, Gunnar Poos, Jan Jaap National Science Foundation 2017 http://dx.doi.org/10.1093/icesjms/fsx152 http://academic.oup.com/icesjms/article-pdf/75/1/298/31236849/fsx152.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 75, issue 1, page 298-308 ISSN 1054-3139 1095-9289 journal-article 2017 croxfordunivpr https://doi.org/10.1093/icesjms/fsx152 2024-05-10T13:16:16Z Abstract Real-time spatial management in fisheries, a type of dynamic ocean management, uses nearly real-time data collection and dissemination to reduce susceptibility of certain species or age classes to being caught in mixed fisheries. However, as with many fisheries regulations, it is difficult to assess whether such a regulation can produce tangible results on population dynamics. In this study, we take advantage of a rare opportunity in which data regarding real-time closures (RTCs) are available for 1990–2014 alongside annual estimates of fishing mortality for three species (Atlantic cod, haddock, and herring) and catch for four species (all plus saithe) in Icelandic fisheries management. We use time series analyses to assess whether RTCs work as expected and yield a lower susceptibility of small fish to being caught, indicated by lower catch levels and selectivities (as estimated from fishing mortalities) in years with more closures. Results indicate that haddock and herring followed this pattern, but only under conditions of generally high fishing mortality. This study represents the first time evidence has been presented that real-time fishery closures can have a beneficial effect on population dynamics, but also suggests that results differ among species. Article in Journal/Newspaper atlantic cod Oxford University Press ICES Journal of Marine Science 75 1 298 308 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Real-time spatial management in fisheries, a type of dynamic ocean management, uses nearly real-time data collection and dissemination to reduce susceptibility of certain species or age classes to being caught in mixed fisheries. However, as with many fisheries regulations, it is difficult to assess whether such a regulation can produce tangible results on population dynamics. In this study, we take advantage of a rare opportunity in which data regarding real-time closures (RTCs) are available for 1990–2014 alongside annual estimates of fishing mortality for three species (Atlantic cod, haddock, and herring) and catch for four species (all plus saithe) in Icelandic fisheries management. We use time series analyses to assess whether RTCs work as expected and yield a lower susceptibility of small fish to being caught, indicated by lower catch levels and selectivities (as estimated from fishing mortalities) in years with more closures. Results indicate that haddock and herring followed this pattern, but only under conditions of generally high fishing mortality. This study represents the first time evidence has been presented that real-time fishery closures can have a beneficial effect on population dynamics, but also suggests that results differ among species. |
author2 |
Poos, Jan Jaap National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Woods, Pamela J Þór Elvarsson, Bjarki Sigurdsson, Thorsteinn Stefánsson, Gunnar |
spellingShingle |
Woods, Pamela J Þór Elvarsson, Bjarki Sigurdsson, Thorsteinn Stefánsson, Gunnar Evaluating the effectiveness of real-time closures for reducing susceptibility of small fish to capture |
author_facet |
Woods, Pamela J Þór Elvarsson, Bjarki Sigurdsson, Thorsteinn Stefánsson, Gunnar |
author_sort |
Woods, Pamela J |
title |
Evaluating the effectiveness of real-time closures for reducing susceptibility of small fish to capture |
title_short |
Evaluating the effectiveness of real-time closures for reducing susceptibility of small fish to capture |
title_full |
Evaluating the effectiveness of real-time closures for reducing susceptibility of small fish to capture |
title_fullStr |
Evaluating the effectiveness of real-time closures for reducing susceptibility of small fish to capture |
title_full_unstemmed |
Evaluating the effectiveness of real-time closures for reducing susceptibility of small fish to capture |
title_sort |
evaluating the effectiveness of real-time closures for reducing susceptibility of small fish to capture |
publisher |
Oxford University Press (OUP) |
publishDate |
2017 |
url |
http://dx.doi.org/10.1093/icesjms/fsx152 http://academic.oup.com/icesjms/article-pdf/75/1/298/31236849/fsx152.pdf |
genre |
atlantic cod |
genre_facet |
atlantic cod |
op_source |
ICES Journal of Marine Science volume 75, issue 1, page 298-308 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icesjms/fsx152 |
container_title |
ICES Journal of Marine Science |
container_volume |
75 |
container_issue |
1 |
container_start_page |
298 |
op_container_end_page |
308 |
_version_ |
1801373455478685696 |