The influence of spatially variable and connected recruitment on complex stock dynamics and its ecological and management implications
To evaluate the influence of spatially variable and connected recruitments at spawning component scale on complex stock dynamics, a typical agent-based complex stock was modeled based on the Atlantic cod (Gadus morhua) stock in the Gulf of Maine. We simulated three scenarios with different degrees o...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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2019
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crcansciencepubl:10.1139/cjfas-2018-0151 2024-09-15T17:55:30+00:00 The influence of spatially variable and connected recruitment on complex stock dynamics and its ecological and management implications Guan, Lisha Chen, Yong Wilson, James A. Waring, Timothy Kerr, Lisa A. Shan, Xiujuan 2019 http://dx.doi.org/10.1139/cjfas-2018-0151 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0151 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0151 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 76, issue 6, page 937-949 ISSN 0706-652X 1205-7533 journal-article 2019 crcansciencepubl https://doi.org/10.1139/cjfas-2018-0151 2024-07-11T04:12:01Z To evaluate the influence of spatially variable and connected recruitments at spawning component scale on complex stock dynamics, a typical agent-based complex stock was modeled based on the Atlantic cod (Gadus morhua) stock in the Gulf of Maine. We simulated three scenarios with different degrees of connectivity (i.e., individual exchange) between the spatially variable recruitments of 36 spawning components within four subpopulations under the stock. Subsequently, the temporal trends were compared for different scenarios in age-1 recruitment, spawning stock biomass, and local depletion proportion of the overall complex stock and the individual subpopulations. Results show that increased recruitment connectivity from 0.1–0.2 to 0.6–0.8 between various components tends to increase the productivity and stability of a complex stock at local and global scales and reduce the proportion of depleted components due to overfishing. Moreover, depletions of less productive components may occur without a substantial reduction in the overall complex stock biomass and recruitment. Article in Journal/Newspaper atlantic cod Gadus morhua Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 76 6 937 949 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
To evaluate the influence of spatially variable and connected recruitments at spawning component scale on complex stock dynamics, a typical agent-based complex stock was modeled based on the Atlantic cod (Gadus morhua) stock in the Gulf of Maine. We simulated three scenarios with different degrees of connectivity (i.e., individual exchange) between the spatially variable recruitments of 36 spawning components within four subpopulations under the stock. Subsequently, the temporal trends were compared for different scenarios in age-1 recruitment, spawning stock biomass, and local depletion proportion of the overall complex stock and the individual subpopulations. Results show that increased recruitment connectivity from 0.1–0.2 to 0.6–0.8 between various components tends to increase the productivity and stability of a complex stock at local and global scales and reduce the proportion of depleted components due to overfishing. Moreover, depletions of less productive components may occur without a substantial reduction in the overall complex stock biomass and recruitment. |
format |
Article in Journal/Newspaper |
author |
Guan, Lisha Chen, Yong Wilson, James A. Waring, Timothy Kerr, Lisa A. Shan, Xiujuan |
spellingShingle |
Guan, Lisha Chen, Yong Wilson, James A. Waring, Timothy Kerr, Lisa A. Shan, Xiujuan The influence of spatially variable and connected recruitment on complex stock dynamics and its ecological and management implications |
author_facet |
Guan, Lisha Chen, Yong Wilson, James A. Waring, Timothy Kerr, Lisa A. Shan, Xiujuan |
author_sort |
Guan, Lisha |
title |
The influence of spatially variable and connected recruitment on complex stock dynamics and its ecological and management implications |
title_short |
The influence of spatially variable and connected recruitment on complex stock dynamics and its ecological and management implications |
title_full |
The influence of spatially variable and connected recruitment on complex stock dynamics and its ecological and management implications |
title_fullStr |
The influence of spatially variable and connected recruitment on complex stock dynamics and its ecological and management implications |
title_full_unstemmed |
The influence of spatially variable and connected recruitment on complex stock dynamics and its ecological and management implications |
title_sort |
influence of spatially variable and connected recruitment on complex stock dynamics and its ecological and management implications |
publisher |
Canadian Science Publishing |
publishDate |
2019 |
url |
http://dx.doi.org/10.1139/cjfas-2018-0151 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0151 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0151 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 76, issue 6, page 937-949 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2018-0151 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
76 |
container_issue |
6 |
container_start_page |
937 |
op_container_end_page |
949 |
_version_ |
1810431779442524160 |