Methods for surveying biodiversity range from rapid biodiversity assessments to full taxonomic inventories. Recently, surveying of biological sounds has been suggested as a means to rapidly quantify ecosystem health and biodiversity as it enables remote, non-intrusive and continuous surveillance of communities at a high temporal resolution. The present study explores the link between two acoustic features, i.e. the sound pressure level and acoustic complexity, of three reef sites on Bora Bora Island, French Polynesia and their biological and physical features, in terms of fish abundance and type of substrate. Sites with a high number of fish appeared to be noisier especially in the low frequencies while sites with more living coral cover presented a higher acoustic complexity. These indices may therefore provide valuable information on different aspects of the biology and ecology of coral reefs. However, some discrepancies in the daily periodicity of both indices remain between sites, highlighting the need to further strengthen the potential of using acoustic surveys in immediate state assessment of ocean ecosystems and better manage coral reef conservation in particular.

中文翻译：

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法属波利尼西亚波拉波拉岛泻湖中三个地点的初步声学评估

调查生物多样性的方法范围从快速生物多样性评估到完整的分类清单。最近，有人建议将生物声音调查作为快速量化生态系统健康和生物多样性的一种手段，因为它能够以高时间分辨率对社区进行远程、非侵入性和连续监测。本研究探讨了法属波利尼西亚波拉波拉岛三个珊瑚礁地点的两个声学特征之间的联系，即声压级和声学复杂性，以及它们在鱼类丰度和基质类型方面的生物和物理特征。有大量鱼类的地点似乎噪音更大，尤其是在低频下，而有更多活珊瑚覆盖的地点则呈现出更高的声学复杂性。因此，这些指数可以提供有关珊瑚礁生物学和生态学不同方面的宝贵信息。然而，两个指数的每日周期在站点之间仍然存在一些差异，这突出表明需要进一步加强在海洋生态系统即时状态评估中使用声学调查的潜力，尤其是更好地管理珊瑚礁保护。