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首页> 外文期刊>ICES Journal of Marine Science >Demersal fish biodiversity: species-level indicators and trends-based targets for the Marine Strategy Framework Directive
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Demersal fish biodiversity: species-level indicators and trends-based targets for the Marine Strategy Framework Directive

机译：深海鱼类生物多样性：《海洋战略框架指令》的物种水平指标和基于趋势的目标

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摘要

The maintenance of biodiversity is a fundamental theme of the Marine Strategy Framework Directive. Appropriate indicators to monitor change in biodiversity, along with associated targets representing "good environmental status" (GES), are required to be in place by July 2012. A method for selecting species-specific metrics to fulfil various specified indicator roles is proposed for demersal fish communities. Available data frequently do not extend far enough back in time to allow GES to be defined empirically. In such situations, trends-based targets offer a pragmatic solution. A method is proposed for setting indicator-level targets for the number of species-specific metrics required to meet their trends-based metric-level targets. This is based on demonstrating significant departures from the binomial distribution. The procedure is mailed using North Sea demersal fish survey data. Although fisheries management in the North Sea has improved in recent decades, management goals to stop further decline in biodiversity, and to initiate recovery, are yet to be met.
机译：维持生物多样性是《海洋战略框架指令》的基本主题。到2012年7月，必须有适当的指标来监测生物多样性的变化，以及代表“良好环境状况”（GES）的相关目标。提出了一种选择特定物种的指标来履行各种指定指标作用的方法鱼社区。可用数据经常无法及时扩展，无法根据经验定义GES。在这种情况下，基于趋势的目标提供了务实的解决方案。提出了一种方法来设置指标级别的目标，以达到满足其基于趋势的指标级别的目标所需的特定物种指标的数量。这是基于证明与二项式分布有显着差异的。该程序使用北海沉鱼调查数据邮寄。尽管近几十年来北海的渔业管理已有所改善，但停止实现生物多样性进一步下降并开始恢复的管理目标尚未实现。

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  • 来源
    《ICES Journal of Marine Science》 |2012年第10期|p.1789-1801|共13页
  • 作者

    Simon P. R. Greenstreet; Axel G. Rossberg; Clive J. Fox; William J. F. Le Quesne; Tom Blasdale; Philip Boulcott; Ian Mitchell; Colin Millar; Colin F. Moffat;

  • 作者单位

    Marine Scotland, Marine Laboratory, Victoria Road, Aberdeen AB11 9DB, UK;

    School of Biological Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK,Centre for Environment, Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, Suffolk NR33 OHT, UK;

    Scottish Marine Institute, Oban, Argyll, PA28 1QA, UK;

    Centre for Environment, Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, Suffolk NR33 OHT, UK;

    Joint Nature Conservancy Committee, Inverdee House, Baxter Street, Aberdeen, AB11 7QA, UK;

    Marine Scotland, Marine Laboratory, Victoria Road, Aberdeen AB11 9DB, UK;

    Joint Nature Conservancy Committee, Inverdee House, Baxter Street, Aberdeen, AB11 7QA, UK;

    Marine Scotland, Marine Laboratory, Victoria Road, Aberdeen AB11 9DB, UK,European Commission, joint Research Center, Institute for the Protection and Security of the Citizen/Maritime Affairs Unit, FISHREC, 21027 Ispra (VA), Italy;

    Marine Scotland, Marine Laboratory, Victoria Road, Aberdeen AB11 9DB, UK;

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  • 正文语种 eng
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  • 关键词

    binomial distribution; indicator-level targets; metric-level targets; "sensitive" species; species-specific metrics.;

    机译：二项分布;指标级目标;指标级目标;“敏感”物种;特定物种的指标。;

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