Drifting hydrophones as an ecologically meaningful approach to underwater soundscape measurement in coastal benthic habitats
Drifting hydrophones as an ecologically meaningful approach to underwater soundscape measurement in coastal benthic habitats
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漂流水听器作为沿海底栖栖息地水下声景测量的一种具有生态意义的方法
DOI：
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发表时间：
2018
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通讯作者：
D. Eggleston
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作者：
Ashlee Lillis;F. Caruso;T. Mooney;J. Llopiz;D. Bohnenstiehl;D. Eggleston
环境声环境或声景在海洋生态系统研究中引起广泛兴趣，因为它既是海洋生物丰富感官信息的来源，更广泛地说，是海洋群落结构和功能的驱动力。要提高我们对声景如何影响和反映生态过程的理解，首先需要对声刺激及其在空间和时间上的模式进行适当的表征。在这里，我们提出了一种测量声景变化的新方法，使用漂移的声波记录器来量化与海底栖息地组成相关的声学动力学。美国北卡罗来纳州Pamlico Sound的潮下牡蛎-珊瑚礁生境和美属维尔京群岛圣约翰的珊瑚礁生境的漂流结果精选实例，突出了这种方法在量化不同生境的声景变化方面的有效性和实用性。该平台在声学记录中引入了最小的噪声，并允许在空间尺度上进行采样，而使用固定水听器方法通常会忽略这些采样。我们证明，移动水听器记录方法提供了对声景变化的新见解，并提供了传统被动声学监测技术的补充方法。
The ambient acoustic environment, or soundscape, is of broad interest in the study of marine ecosystems as both a source of rich sensory information to marine organisms and, more broadly, as a driver of the structure and function of marine communities. Increasing our understanding of how soundscapes affect and reflect ecological processes first requires appropriate characterization of the acoustic stimuli, and their patterns in space and time. Here, we present a novel method developed for measuring soundscape variation, using drifting acoustic recorders to quantify acoustic dynamics related to benthic habitat composition. Selected examples of drifter results from sub-tidal oyster-reef habitats in Pamlico Sound, North Carolina, USA, and from coral reef habitats in St. John, US Virgin Islands, highlight the efficacy and utility of this approach in quantifying soundscape variation in diverse habitats. The platform introduces minimal noise into the acoustic recordings, and allows sampling at spatial scales that might typically be overlooked using stationary hydrophone methods. We demonstrate that mobile hydrophone recording methods offer new insight into soundscape variation and provide a complementary approach to conventional passive acoustic monitoring techniques.