时空参数对地中海东部大西洋蓝鳍金枪鱼围网捕捞CPUE的影响

IF 1.1 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY

Journal of the Marine Biological Association of the United Kingdom Pub Date : 2024-02-15 DOI:10.1017/s002531542400002x

F. Saadet Karakulak, Tevfik Ceyhan

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引用次数: 0

摘要

在本研究中，我们利用 1992 年至 2006 年商业日志和实地调查的渔获量和渔获努力量数据，应用广义加法模型研究了时空变量和渔船长度对大西洋蓝鳍金枪鱼围网渔业单位努力渔获量（CPUE）的影响。取样围网的渔船长度从 20 米到 64 米不等，每次作业捕获的大西洋蓝鳍金枪鱼数量从 1 条到 2000 条不等。共计算了 386 个 ABFT CPUE 值 0.05 和 60 t⋅ (拖网日)-1，平均 CPUE 为 5.51 ± 0.54 t⋅ (拖网日)-1。虽然海面温度对 CPUE 的影响不大，但时间和空间变量、渔船长度和盐度对 CPUE 的影响显著。总之，若要减少渔业对生态系统的影响，应考虑 ABFT 的空间动态。

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The influences of temporal-spatial parameters on CPUE of the Atlantic bluefin tuna purse seine fishery in eastern Mediterranean

In this study, we applied generalized additive model to investigate the influence of spatial temporal variables and vessel length on catch per unit-effort (CPUE) of Atlantic bluefin tuna (ABFT) purse seine fishery using catch and effort data from commercial logbooks and field surveys from 1992 to 2006. The vessel lengths of sampled purse seines ranged from 20 to 64 m. The number of ABFT caught within each operation varied between 1 and 2000. A total of 386 CPUE values for ABFT were calculated 0.05 and 60 t ⋅ (haul day)–1 with mean CPUE of 5.51 ± 0.54 t ⋅ (haul day)–1. Although the sea surface temperature had little influence on the CPUE, the effect of time and spatial variables, vessel length and salinity was found as significant. In conclusion, the spatial dynamics of ABFT should be considered if the impact of fisheries on the ecosystem is to be reduced.

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来源期刊

Journal of the Marine Biological Association of the United Kingdom 生物-海洋与淡水生物学

CiteScore

2.30

自引率

8.30%

发文量

审稿时长

3-8 weeks

期刊介绍： JMBA is an international journal, publishing original research on all aspects of marine biology. It includes pioneering work taking place today on major issues concerning marine organisms and their environment. Subjects covered include: ecological surveys and population studies of marine communities; physiology and experimental biology; taxonomy, morphology and life history of marine animals and plants; and chemical and physical oceanographic work. Included with 2010 online subscriptions: Marine Biodiversity Records.