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The effect of seismic surveys on catch rates of rock lobsters inwestern Victoria, Australia

机译：地震勘探对澳大利亚维多利亚州西部龙虾捕捞率的影响

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摘要

The effect of seismic discharges on rock lobsters was investigated through statistical analysis of the coincidence between seismic surveys and changes in commercial catch rates in western Victoria between 1978 and 2004. In 12 depth- stratified regions, the number of acoustic pulses during seismic surveys was correlated with catch per unit effort (CPUE) of rock lobsters to determine whether catch rates were affected in the years following seismic surveys. In three regions subject to intensive seismic surveys two-way analysis of variance was used to detect short-term (weekly) changes in CPUE before, during and after these seismic surveys. There was no evidence that catch rates of rock lobsters in western Victoria were affected by seismic surveys in the weeks or years following the surveys. However, most seismic surveys occurred in deep water, where impacts would be expected to be minimal. The sensitivity of analyses in shallow water was generally limited by low levels of seismic surveying, but in one region where there was intensive seismic activity, the sensitivity was limited by the low abundance of rock lobsters. The apparent lack of impact of seismic surveys on catch rates of rock lobsters is consistent with the limited information available on the physiological effects of seismic surveys on invertebrates, including rock lobsters.
机译：通过对1978年至2004年维多利亚州西部地震勘测与商业捕获率变化之间的符合性进行统计分析，研究了地震释放对龙虾的影响。在12个深度分层区域中，地震勘测中的声脉冲数是相关的用龙虾的单位捕获量（CPUE）来确定地震调查后的几年中捕获率是否受到影响。在进行了密集地震勘测的三个区域中，使用了方差的双向分析来检测这些地震勘测之前，之中和之后CPUE的短期（每周）变化。没有证据表明在维多利亚州西部的龙虾捕捞率在调查后的几周或数年内受到地震调查的影响。但是，大多数地震勘测都发生在深水区，预计影响最小。浅水区分析的敏感性通常受到地震勘测水平低的限制，但在地震活动活跃的一个地区，其敏感性受到龙虾丰度低的限制。地震勘测对岩龙虾捕获率的影响显然缺乏影响，这与有关地震勘测对无脊椎动物（包括岩龙虾）的生理影响的可用信息有限有关。

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