Soundscapes as heard by invertebrates and fishes: Particle motion measurements on coral reefs
Soundscapes as heard by invertebrates and fishes: Particle motion measurements on coral reefs
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DOI：
10.1121/10.0012579
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发表时间：
2022-07-01
影响因子：
2.4
通讯作者：
Mooney, T. Aran
中科院分区：
文献类型：
--
作者：
Jones, Ian T.;Gray, Michael D.;Mooney, T. Aran
无脊椎动物和鱼类对珊瑚礁声景观的生态利用、生境质量监测以及人为噪声污染的影响等方面的研究越来越多。尽管它们与无脊椎动物和鱼类有关，但很少有关于水生声景的研究报告了粒子运动水平和变异性。在这项研究中，通过正交水听器阵列在四个珊瑚礁地点进行了几个月的环境粒子加速度量化，这些地点在底栖动物栖息地和鱼类群落中有所不同。时间平均粒子加速度大小在各轴上相似，在3db以内。粒子加速度的时间趋势与声压的时间趋势相对应，两个指标中颗粒趋势的强度与珊瑚覆盖率的百分比显著相关。更高量级的粒子加速度与压力值的差异更大，可能代表近场记录的声音。粒子加速水平也报告了船声和鱼声的例子。与粒子加速度衍生的听音图相比，无脊椎动物和鱼类检测100 Hz以下声景分量的能力最大，但与鱼类相比，无脊椎动物的声景可探测性较差。基于这些结果，讨论了对粒子运动报告至关重要的研究焦点，以及对声压可能足够的研究焦点。(C) 2022美国声学学会。
Coral reef soundscapes are increasingly studied for their ecological uses by invertebrates and fishes, for monitoring habitat quality, and to investigate effects of anthropogenic noise pollution. Few examinations of aquatic soundscapes have reported particle motion levels and variability, despite their relevance to invertebrates and fishes. In this study, ambient particle acceleration was quantified from orthogonal hydrophone arrays over several months at four coral reef sites, which varied in benthic habitat and fish communities. Time-averaged particle acceleration magnitudes were similar across axes, within 3 dB. Temporal trends of particle acceleration corresponded with those of sound pressure, and the strength of diel trends in both metrics significantly correlated with percent coral cover. Higher magnitude particle accelerations diverged further from pressure values, potentially representing sounds recorded in the near field. Particle acceleration levels were also reported for boat and example fish sounds. Comparisons with particle acceleration derived audiograms suggest the greatest capacity of invertebrates and fishes to detect soundscape components below 100 Hz, and poorer detectability of soundscapes by invertebrates compared to fishes. Based on these results, research foci are discussed for which reporting of particle motion is essential, versus those for which sound pressure may suffice. (C) 2022 Acoustical Society of America.