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首页> 外文期刊>Marine biology >Worrisome trends in global stock status continue unabated: a response to a comment by R.M. Cook on 'What catch data can tell us about the status of global fisheries'
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Worrisome trends in global stock status continue unabated: a response to a comment by R.M. Cook on 'What catch data can tell us about the status of global fisheries'

机译：全球库存状况的令人担忧的趋势仍未减弱：R.M。做饭：“哪些捕捞数据可以告诉我们有关全球渔业状况的信息”

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摘要

In a previous contribution to this journal (Froese et al. 2012), we refuted criticism of a simple method (Froese and Kesner-Reyes 2002) that derives information about the status of global stocks from global catch data. This method assumes that, for a given stock, the ratio of current catches to previous maximum catches (C_(max)) is indicative of the likely current exploitation status of the stock. For example, the method considers a stock as "collapsed" if current catch is <10 % of the previous maximum catch. The method also assumes that current catches in the range of 0.5-1.0 C_(max) are indicative of fully exploited stocks, implying that the maximum sustainable yield (MSY) would also fall into that range. This assumption was supported by the observation (Froese et al. 2012) that the median MSY/C_(max) ratio in 50 fully assessed stocks of the Northeast Atlantic was 0.62 (95 % confidence limits 0.56-0.70). Also, a plot of log(C_(max)) over log(MSY) for these stocks showed a high correlation with little variance around the regression line.
机译：在对该期刊的先前贡献（Froese等，2012）中，我们驳斥了对一种简单方法的批评（Froese and Kesner-Reyes 2002），该方法可从全球捕获数据中获取有关全球种群状况的信息。该方法假设，对于给定的种群，当前捕获量与先前最大捕获量的比率（C_（max））表示该种群当前可能的开采状态。例如，如果当前捕获量小于先前最大捕获量的10％，则该方法将股票视为“已崩溃”。该方法还假设当前捕获量在0.5-1.0 C_（max）范围内表示完全开发了种群，这意味着最大可持续产量（MSY）也将落入该范围内。这一假设得到了观测的支持（Froese等，2012），即东北大西洋的50只经过充分评估的种群的MSY / C_（max）比率中位数为0.62（95％置信区间0.56-0.70）。同样，这些股票的log（C_（max））相对log（MSY）的图显示出高度相关性，回归线附近的变化很小。

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  • 来源
    《Marine biology》 |2013年第9期|2531-2533|共3页
  • 作者

    Rainer Froese; Dirk Zeller; Kristin Kleisner; Daniel Pauly;

  • 作者单位

    GEOMAR, Duesternbrooker Weg 20, 24105 Kiel, Germany;

    Fisheries Centre, University of British Columbia, 2202 Main Mall, Vancouver, BC V6T 1Z4, Canada;

    Fisheries Centre, University of British Columbia, 2202 Main Mall, Vancouver, BC V6T 1Z4, Canada;

    Fisheries Centre, University of British Columbia, 2202 Main Mall, Vancouver, BC V6T 1Z4, Canada;

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