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首页> 外文期刊>ICES Journal of Marine Science >Scottish lobster fisheries and environmental variability
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Scottish lobster fisheries and environmental variability

机译：苏格兰龙虾渔业和环境多变性

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摘要

Variability in the fluctuations of two Scottish lobster populations, the Hebrides and Southeast, was investigated from available long dataseries of fishery and environmental variables. In a multivariate context, relationships between selected environmental variables and the fishery data were studied at different spatial and temporal (annual, spring, and autumn) scales and from individual and overall sampled fleet. Multivariate techniques such as cross-correlation function, principal components analysis, and redundancy analysis confirmed that the capture of lobsters was strongly influenced by sea surface temperature, windspeed, and sea level pressure throughout the year, and this dependence affected the duration of the fishery. There were evident differences in the patterns of environmental variables for both regions. In the Hebrides, the total variation (42%) of the interaction fishery-environmental variables for spring and autumn fisheries could be attributed to the environmental variables in an 89%. For the Southeast, spring fishery was more affected by changes in the environment, with a total variation of 34%, from which 85% could be explained by the environmental variables tested, than autumn fishery where catches and catch rates may be more affected by the way individual vessel and sampled fleet operate. Two elements were identified, Hebrides and Southeast spring and autumn fisheries. The Hebrides lobster population is strongly influenced by density-independence processes at all spatial scales. The Southeast fishery is also driven by environmental processes, with higher correlations for recruits with differences at small and large spatial scales.
机译：从可用的长期渔业和环境变量数据系列中，研究了两个苏格兰龙虾种群（赫布里底群岛和东南部）的波动变异性。在多变量情况下，在不同的空间和时间（年度，春季和秋季）规模上以及从单个和总体采样船队中研究了选定的环境变量与渔业数据之间的关系。互相关函数，主成分分析和冗余分析等多变量技术证实，全年捕获的龙虾受到海面温度，风速和海平面压力的强烈影响，而这种依赖性影响了渔业的持续时间。两个区域的环境变量模式存在明显差异。在赫布里底群岛，春季和秋季渔业相互作用的渔业-环境变量的总变化（42％）可归因于89％的环境变量。对于东南部地区，春季渔业受环境变化的影响更大，总变化为34％，其中85％可以由所测试的环境变量解释，而秋季渔业与秋季渔业相比则受到更大的影响。单个船只和采样船队的运行方式。确定了两个要素，赫布里底群岛和东南部春季和秋季渔业。赫布里底群岛龙虾种群在所有空间尺度上都受到密度独立过程的强烈影响。东南部渔业也受到环境过程的驱动，对于新兵而言，在小空间和大空间尺度上的差异都具有较高的相关性。

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  • 来源
    《ICES Journal of Marine Science》 |2015年第1期|i211-i224|共14页
  • 作者

    Lizarraga-Cubedo H. A.; Tuck I.; Bailey N.; Pierce G. J.; Zuur A. F.; Bova D.;

  • 作者单位

    Ctr Reg Invest Pesquera, Inst Nacl Pesca, Ciudad Del Carmen, Mexico|Marine Lab, Marine Scotland Sci, Aberdeen AB11 9DB, Aberdeenshire, Scotland|Univ Aberdeen, Sch Biol Sci, Dept Zool, Aberdeen AB24 2TZ, Scotland;

    Marine Lab, Marine Scotland Sci, Aberdeen AB11 9DB, Aberdeenshire, Scotland|Natl Inst Water & Atmospher Res NIWA, Fisheries & Marine Ecol, Auckland, New Zealand|Univ Auckland, Dept Stat, Auckland 1149, New Zealand;

    Marine Lab, Marine Scotland Sci, Aberdeen AB11 9DB, Aberdeenshire, Scotland;

    Univ Aberdeen, Oceanlab, Newburgh AB41 6AA, Aberdeenshire, Scotland|Univ Aveiro, CESAM, P-3810193 Aveiro, Portugal|Univ Aveiro, Dept Biol, P-3810193 Aveiro, Portugal;

    Highland Stat Ltd, Newburgh AB41 6FN, England;

    Univ Aberdeen, Sch Biol Sci, Dept Zool, Aberdeen AB24 2TZ, Scotland;

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  • 关键词

    environmental factors; Homarus gammarus fisheries; redundancy analysis;

    机译：环境因素;霍马斯伽玛鲁斯渔业;冗余分析;

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