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首页> 外文期刊>ICES Journal of Marine Science >Historical changes in fishing efficiency in the west coast demersal scalefish fishery, Western Australia: implications for assessment and management
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Historical changes in fishing efficiency in the west coast demersal scalefish fishery, Western Australia: implications for assessment and management

机译：西澳大利亚州西海岸深海鳞鱼渔业捕捞效率的历史变化：对评估和管理的影响

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摘要

The west coast demersal scalefish fishery off the southern part of Western Australia has experienced technological creep over the past 20 years, resulting in improved fishing efficiency. The aim of this study was to obtain quantitative measures of efficiency improvements arising from the historical adoption of several important technologies from the surveys of experienced skippers. Survey results suggest that the relatively rapid adoption of Global Positioning Systems from 1989 to 1991 had a large and overriding effect on fleet-wide fishing efficiency. Additive effects from the fleet-wide adoption of colour sounders and hydraulic reels on effective fishing effort and the catch rates of West Australian dhufish (Glaucosoma hebraicum) and pink snapper (Pagrus auratus) were also demonstrated. Historical logbook data were independently analysed as a secondary check of these findings for three of the surveyed skippers, which identified that GPS adoption had a significant, positive influence on the catch rate for two vessels, but not for the third, highlighting potential variation in this response among skippers. The results have contributed towards improved understanding of the historical dynamics of the fishery and of the factors that have affected, at least in part, historical changes or, in some instances, a lack of change in observed effort and catch rates.
机译：在过去的20年中，西澳大利亚州南部的西海岸深海鳞鱼渔业经历了技术发展，从而提高了捕捞效率。这项研究的目的是从经验丰富的船长的调查中获得一些重要技术的历史采用所带来的效率提高的定量度量。调查结果表明，从1989年至1991年相对较快地采用了全球定位系统，对整个船队的捕捞效率产生了巨大的压倒性影响。还证明了在整个舰队中采用彩色测深仪和液压渔线轮对有效捕捞努力以及西澳大利亚Australian鱼（Glaucosoma hebraicum）和粉红鲷鱼（Pagrus auratus）的捕获率具有附加作用。对历史记录数据进行了独立分析，作为对三个调查船长的这些发现的第二检查，确定了GPS的采用对两艘船的捕获率具有显着的积极影响，但对第三艘船的捕获率没有显着影响，突出表明了这方面的潜在变化队长之间的反应。结果有助于更好地了解渔业的历史动态以及至少部分影响历史变化或在某些情况下观察到的努力和捕捞率没有变化的因素。

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  • 来源
    《ICES Journal of Marine Science》 |2011年第1期|p.76-86|共11页
  • 作者

    Ross J. Marriott; Brent Wise; Jill St John;

  • 作者单位

    Western Australian Fisheries and Marine Research Laboratories, Department of Fisheries, Government of Western Australia, PO Box 20, North Beach, Western Australia 6920, Australia;

    Western Australian Fisheries and Marine Research Laboratories, Department of Fisheries, Government of Western Australia, PO Box 20, North Beach, Western Australia 6920, Australia;

    The Wilderness Society, City West Lotteries House, 2 Delhi St, West Perth, Western Australia 6005, Australia;

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  • 正文语种 eng
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  • 关键词

    effective fishing effort; fish-finding aids; technological creep;

    机译：有效的捕捞努力;鱼的辅助工具;技术蠕变;

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