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首页> 外文期刊>Marine biology >Determining effective acoustic array design for monitoring presence of white sharks Carcharodon carcharias in nearshore habitats
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Determining effective acoustic array design for monitoring presence of white sharks Carcharodon carcharias in nearshore habitats

机译：确定有效的声学阵列设计，用于监测近岸栖息地的白鲨Carcharodon Carcharias的存在

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Inferences regarding animal presence from passive acoustic receiver arrays are driven by the spatial configuration of receivers. Large, dense arrays provide more information, but maintenance of multiple receivers is costly. Configuring acoustic receiver arrays to maximise coverage while minimising cost is therefore paramount. This study used data from a dense acoustic receiver array within a white shark Carcharodon carcharias nursery area on the east coast of Australia to assess how detection data of tagged white sharks in the area was affected by reducing the array size. Receivers were sub-sampled post hoc by simple random sampling, clustered random sampling, and sampling of the top performing receivers. Using the top performing receivers, array size could be reduced by 60% (10 out of 25 receivers) while still detecting a median of 100% of white sharks detected with the full array. With random and clustered sampling methods, a 40% reduction in array size (15 out of 25 receivers) detected a median of 100% of sharks. Reducing the array size by 60% using the top performing receivers resulted in a 35% decrease in the median number of detections per visit of the tagged sharks (67 out of 102.5 detections). In comparison, reducing the array by the same amount with random and clustered sampling methods resulted in a 57% decrease (44 out of 102.5 detections). The post hoc sampling methods used in this study are an empirical approach for optimising placement of limited receiver resources with broad application for establishing cost-effective monitoring.
机译：关于来自被动声接收器阵列的动物存在的推迟由接收器的空间配置驱动。大型密集阵列提供更多信息，但维护多个接收器昂贵。配置声学接收器阵列以最大限度地提高覆盖率，同时最小化成本是至关重要的。本研究使用了来自澳大利亚东海岸的白鲨Carcharodon Carcharias托儿所托儿所中的密集声学接收器阵列的数据来评估该区域中标记的白色鲨鱼的检测数据是如何影响阵列大小的影响。通过简单的随机采样，聚类随机采样和顶部执行接收器的采样，接收器通过简单的随机采样，群集随机采样和采样。使用顶部执行接收器，阵列大小可以减少60％（25个接收器中的10个），同时仍然检测到使用完整阵列检测到100％的白色鲨鱼的中位数。随机和聚集的采样方法，阵列大小的40％降低（25个接收器中的15个）检测到100％的鲨鱼中位数。使用顶部执行接收器将阵列大小减小60％导致标记鲨的每次访问的检测数量下降35％（67个检测中的67个）。相比之下，用随机和聚类的采样方法将阵列减少相同的量导致57％的减少（102.5检测中的44个）。本研究中使用的后HOC采样方法是优化有限接收器资源的放置，以便建立经济高效监测的广泛应用的实证方法。

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    《Marine biology》 |2021年第4期|49.1-49.14|共14页
  • 作者

    Gabriel Sofia M.; Patterson T. A.; Eveson J. P.; Semmens J. M.; Harasti D.; Butcher P. A.; Spaet J. L. Y.; Bradford R. W.;

  • 作者单位

    Univ Tasmania Inst Marine & Antarctic Studies Quantitat Marine Sci Program Private Bag 49 Hobart Tas 7001 Australia|CSIRO Oceans & Atmosphere GPO Box 1538 Hobart Tas 7001 Australia|Univ Tasmania Fisheries & Aquaculture Ctr Inst Marine & Antarctic Studies Private Bag 49 Hobart Tas 7001 Australia;

    CSIRO Oceans & Atmosphere GPO Box 1538 Hobart Tas 7001 Australia;

    CSIRO Oceans & Atmosphere GPO Box 1538 Hobart Tas 7001 Australia;

    Univ Tasmania Fisheries & Aquaculture Ctr Inst Marine & Antarctic Studies Private Bag 49 Hobart Tas 7001 Australia;

    Port Stephens Fisheries Inst NSW Dept Primary Ind Fisheries Res Taylors Beach NSW 2316 Australia;

    Natl Marine Sci Ctr NSW Dept Primary Ind Fisheries Res Coffs Harbour NSW 2450 Australia|Southern Cross Univ Coffs Harbour NSW 2450 Australia;

    Univ Cambridge Dept Zool Evolutionary Ecol Grp Cambridge CB2 3EJ England;

    CSIRO Oceans & Atmosphere GPO Box 1538 Hobart Tas 7001 Australia;

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