Spatial variation of vocalising dugongs around Talibong Island, Thailand

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-04-11 DOI:10.1080/09524622.2022.2058614

Kotaro Tanaka, K. Ichikawa, K. Kittiwattanawong, N. Arai, H. Mitamura

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引用次数: 1

Abstract

ABSTRACT While the occurrence of Dugong (Dugong dugon) has been examined by visual surveys, their habitat use is still not fully understood, since the continuous observation of their behaviour is challenging. Passive acoustic monitoring enables the observation of dugongs’ vocal behaviour, which is one of the key components of their social behaviour, but the temporal and spatial scale of previous studies were limited. In this study, we aimed to examine where dugongs actively vocalised, using multiple underwater recorders that were deployed along the coastline of Talibong Island, Thailand, through one-month observation in both rainy and dry seasons. Dugong calls were automatically detected and false detections were subsequently removed by manual scrutiny. Observations of 1,933 and 2,719 hours were obtained for each season, with a total of 21,340 and 16,337 detected calls, respectively. We found that an elevated rate of detected calls was consistently observed at a few certain monitoring locations in both seasons. These locations should be paid attention in the process of marine spatial planning for their conservation, in addition to the examination of their distribution by visual observation.

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泰国塔里邦岛儒艮发声的空间变异

摘要虽然儒艮（Dugong dugon）的出现已经通过视觉调查进行了研究，但由于对其行为的持续观察具有挑战性，因此对其栖息地的使用仍不完全了解。被动声学监测可以观察儒艮的发声行为，这是儒艮社会行为的关键组成部分之一，但以前的研究在时间和空间上都是有限的。在这项研究中，我们旨在通过在雨季和旱季进行为期一个月的观测，使用部署在泰国塔里邦岛海岸线上的多台水下记录仪来检查儒艮在哪里主动发声。儒艮的电话被自动检测到，随后通过人工审查消除了错误检测。1933年和2719年的观测每个季节获得的小时数分别为21340个和16337个。我们发现，在这两个季节的一些特定监测地点，检测到的呼叫率一直在上升。在海洋空间规划过程中，除了通过目视观察检查其分布外，还应注意这些位置的保护。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.