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Nine decades of North Sea sole and plaice distribution

机译:九十年的北海和分布

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摘要

Recent studies based mainly on research survey data suggest that within the North Sea, sole Solea solea and plaice Pleuronectes platessa have exhibited distribution shifts in recent decades-on average southward for sole and northward to deeper waters for plaice. Various hypotheses may account for such shifts, including climate change effects and more intensive fishing in southern and shallower waters; but the relatively short time-span of datasets analysed so far (~3 decades) has complicated the separation of these two effects. We have made use of a unique dataset of catch and effort data for British North Sea trawlers; these cover nine decades (spanning the period 1913-2007) and are spatially detailed by ICES rectangle (0.5° latitude by 1° longitude). We quantify, for the first time, long-term distribution changes of North Sea sole and plaice over a period approaching a century, and demonstrate that the distribution shift in plaice was attributable to climate change rather than to fishing, but that both climate and fishing played a role in the distribution shift of sole. The discussion also highlights the potential impact of additional factors, including eutrophication, prey availability, and habitat modification.
机译:最近主要基于研究调查数据的研究表明,在北海内,唯一的Solea solea和鱼Pleuronectes板块在最近几十年中表现出分布变化-鱼平均向南,average鱼向北至较深水域。各种假设可能解释了这种变化,包括气候变化的影响以及南部和浅水区更密集的捕鱼;但是到目前为止(〜3十年)分析的数据集相对较短的时间间隔使这两种影响的分离变得复杂。我们利用了独特的英国北海拖网捕捞量和努力量数据集;这些覆盖了九个十年(跨度为1913-2007年),并在空间上以ICES矩形(经纬度为0.5°,经度为1°)进行了详细说明。我们首次量化了近一个世纪以来北海和的长期分布变化,并证明分布的变化是由于气候变化而不是渔业引起的,但是气候和渔业在鞋底的分布变化中起了作用。讨论还强调了其他因素的潜在影响,包括富营养化,猎物可得和栖息地的改变。

著录项

  • 来源
    《ICES Journal of Marine Science》 |2011年第6期|p.1090-1104|共15页
  • 作者单位

    Centre for Environment, Fisheries and Aquaculture Science (Cefas), Pakefield Road, Lowestoft NR33 0HT, UK;

    Centre for Environment, Fisheries and Aquaculture Science (Cefas), Pakefield Road, Lowestoft NR33 0HT, UK;

    Centre for Environment, Fisheries and Aquaculture Science (Cefas), Pakefield Road, Lowestoft NR33 0HT, UK ,International Commission for the Conservation of Atlantic Tunas (ICCAT), C/Corazon de Maria, 8, 28002 Madrid, Spain;

    Wageningen Institute for Marine Resources and Ecosystem Studies (IMARES), IJmuiden, The Netherlands ,Aquaculture and Fisheries Croup, Wageningen University, PO Box 338, 6700 AH Wageningen, The Netherlands;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    climate; depth; fishing; latitude; longitude; plaice; sole.;

    机译:气候;深度;钓鱼;纬度;经度;pla唯一。;

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