| Evaluating impacts of pulse fishing on the effectiveness of seasonal closure |
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| 作者姓名： | 邢磊 陈勇 张崇良 李拜 Yunne-Jai Shin 任一平 |
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| 作者单位： | 中国海洋大学水产学院;美国缅因大学海洋科学学院;美国缅因大学海洋科学学院;青岛海洋科学与技术试点国家实验室;法国蒙彼利埃大学发展研究所;南非开普敦大学海洋研究所生物科学系;中国海洋大学水产学院;青岛海洋科学与技术试点国家实验室 |
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| 基金项目： | The Fundamental Research Funds for the Central Universities under contract Nos 201512002 and 201612002. |
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| 摘 要： | Seasonal fishing closures are often used in fisheries management to conserve overfished stocks.As one of the unintended consequences,fishermen often contend for maximizing catches immediately after reopening fisheries.The resultant large catch landings in a short time period(i.e.,pulse fishing)may undermine the benefit of closure.We implemented an end-to-end model OSMOSE-JZB(Object-oriented Simulator of Marine ec OSystem Exploitation OSMOSE)modelling ecosystem in the Jiaozhou Bay located in China to evaluate the impact of pulse fishing on the effectiveness of seasonal closure at levels of fish community,population,and individual.Our study demonstrated that the three-month closure was successful in conserving fish stocks.There were small variations on ecological indicators(i.e.,total biomass of the community,mean trophic level of the community,mean trophic level of the catch,and Shannon-Wiener biodiversity index)when pulse fishing occurred.Pulse fishing seemed not to result in a great shift in community structure.Compared to other species,the biomass of two large predatory fishes were more susceptible to pulse fishing.Pulse fishing could change the pressure of predators to fish stocks via food webs,especially for young individuals.Our simulations indicate that we can improve the effectiveness of seasonal closure by managing pulse fishing.Although the results derived in this study may be specific to the target ecosystem,the general approach is applicable to other ecosystems when evaluating fishing impacts.
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| 关 键 词： | OSMOSE pulse fishing seasonal closure Jiaozhou Bay |
| 收稿时间： | 2019/3/25 0:00:00 |
Evaluating impacts of pulse fishing on the effectiveness of seasonal closure |
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| Xing Lei,Chen Yong,Zhang Chongliang,Li Bai,Shin Yunne-Jai,Ren Yiping.Evaluating impacts of pulse fishing on the effectiveness of seasonal closure[J].Acta Oceanologica Sinica,2020,39(4):89-99. |
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| Authors: | Xing Lei Chen Yong Zhang Chongliang Li Bai Shin Yunne-Jai Ren Yiping |
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| Institution: | College of Fisheries, Ocean University of China, Qingdao 266003, China;School of Marine Sciences, University of Maine, Orono, Maine 04469, USA;School of Marine Sciences, University of Maine, Orono, Maine 04469, USA;Laboratory for Marine Fisheries and Aquaculture, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China;College of Fisheries, Ocean University of China, Qingdao 266003, China;School of Marine Sciences, University of Maine, Orono, Maine 04469, USA;Institut de Recherche pour le Développement (IRD), Université de Montpellier, CNRS, Ifremer, MARBEC, CC093, 34095 Montpellier Cedex 5, France;Marine Research (MA-RE) Institute and Department of Biological Sciences, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa;College of Fisheries, Ocean University of China, Qingdao 266003, China;Laboratory for Marine Fisheries and Aquaculture, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China |
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| Abstract: | Seasonal fishing closures are often used in fisheries management to conserve overfished stocks. As one of the unintended consequences, fishermen often contend for maximizing catches immediately after reopening fisheries. The resultant large catch landings in a short time period (i.e., pulse fishing) may undermine the benefit of closure. We implemented an end-to-end model OSMOSE-JZB (Object-oriented Simulator of Marine ecOSystem Exploitation OSMOSE) modelling ecosystem in the Jiaozhou Bay located in China to evaluate the impact of pulse fishing on the effectiveness of seasonal closure at levels of fish community, population, and individual. Our study demonstrated that the three-month closure was successful in conserving fish stocks. There were small variations on ecological indicators (i.e., total biomass of the community, mean trophic level of the community, mean trophic level of the catch, and Shannon-Wiener biodiversity index) when pulse fishing occurred. Pulse fishing seemed not to result in a great shift in community structure. Compared to other species, the biomass of two large predatory fishes were more susceptible to pulse fishing. Pulse fishing could change the pressure of predators to fish stocks via food webs, especially for young individuals. Our simulations indicate that we can improve the effectiveness of seasonal closure by managing pulse fishing. Although the results derived in this study may be specific to the target ecosystem, the general approach is applicable to other ecosystems when evaluating fishing impacts. |
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| Keywords: | OSMOSE pulse fishing seasonal closure Jiaozhou Bay |
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