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首页> 外文期刊>Marine biology >The effects of experimental bait collection and trampling on a Mytilus californianus mussel bed in southern California
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The effects of experimental bait collection and trampling on a Mytilus californianus mussel bed in southern California

机译：实验性饵料收集和践踏对加州南部Mytilus californianus贻贝床的影响

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摘要

Rocky shores in southern California are heavily visited by humans. At sites used by recreational fishers, the effects of foot traffic combined with the collection of mussels for bait may reduce mussel cover and create mussel-free gaps. To test this hypothesis, the effects of trampling and bait-removal on mussel populations were experimentally examined. Plots in a mussel bed were subjected to monthly combinations of trampling (0, 150, or 300 steps) and simulated bait-removal (0 or 2 removed mussels). Although the experiment was done during a period of high natural disturbance associated with the 1997-1998 ENSO, plots receiving treatments experienced significantly greater reductions in mussel cover, mass, and density than controls. These results indicate that visitor foot traffic and bait-removal by fishers can significantly reduce mussel cover, density, biomass, and sizes.
机译：加利福尼亚南部的多岩石的海岸被人类大量参观。在休闲渔民使用的地点，人流的影响加上收集贻贝的诱饵可能会减少贻贝的覆盖并形成无贻贝的缝隙。为了检验该假设，实验检查了践踏和去除饵料对贻贝种群的影响。贻贝床上的地块每月进行践踏（0、150或300步）和模拟诱饵去除（0或2个去除贻贝）的组合。尽管该实验是在1997-1998年ENSO相关的高度自然扰动时期完成的，但接受处理的地块的贻贝覆盖率，质量和密度下降幅度均明显高于对照组。这些结果表明，渔民的客流量和诱饵清除可以大大减少贻贝的覆盖率，密度，生物量和大小。

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  • 来源
    《Marine biology》 |2005年第3期|p.699-706|共8页
  • 作者

    Jayson R. Smith; Steven N. Murray;

  • 作者单位

    Department of Ecology and Evolutionary Biology, University of California Los Angeles, 621 Charles E. Young Dr., South Los Angeles, CA 90095-1606, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境生物学;
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