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学科主题: Acoustics
题名: A passive acoustic monitoring method applied to observation and group size estimation of finless porpoises
作者: Wang, KX; Wang, D; Akamatsu, T; Li, SH; Xiao, JQ
通讯作者: Wang, KX, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: NEOPHOCAENA-PHOCAENOIDES ; ECHOLOCATION SIGNALS ; YANGTZE-RIVER ; BEHAVIOR ; CHINA
刊名: JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
发表日期: 2005-08-01
DOI: 10.1121/1.1945487
卷: 118, 期:2, 页:1180-1185
收录类别: SCI
文章类型: Article
部门归属: Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China; Natl Res Inst Fisheries Engn, Kashima, Ibaraki 3140421, Japan
WOS标题词: Science & Technology ; Technology ; Life Sciences & Biomedicine
类目[WOS]: Acoustics ; Audiology & Speech-Language Pathology
研究领域[WOS]: Acoustics ; Audiology & Speech-Language Pathology
摘要: The present study aimed at determining the detection capabilities of an acoustic observation system to recognize porpoises under local riverine conditions and compare the results with sighting observations. Arrays of three to five acoustic data loggers were stationed across the main channel of the Tian-e-zhou Oxbow of China's Yangtze River at intervals of 100-150 m to record sonar. signals of free-ranging finless porpoises (Neophocaena phocaenoides). Acoustic observations, concurrent with visual observations, were conducted at two occasions on 20-22 October 2003 and 17-19 October 2004. During a total of 42 h of observation, 316 finless porpoises were sighted and 7041 sonar signals were recorded by loggers. The acoustic data loggers recorded ultrasonic signals of porpoises clearly, and detected the presence of porpoises with a correct detection level of 77.6% and a false alarm level of 5.8% within an effective distance of 150 m. Results indicated that the stationed passive acoustic observation method was effective in detecting the presence of porpoises and showed potential in estimating the group size. A positive linear correlation between the number of recorded signals and the group size of sighted porpoises was indicated, although it is faced with some uncertainty and requires further investigation. (C) 2005 Acoustical Society of America.
英文摘要: The present study aimed at determining the detection capabilities of an acoustic observation system to recognize porpoises under local riverine conditions and compare the results with sighting observations. Arrays of three to five acoustic data loggers were stationed across the main channel of the Tian-e-zhou Oxbow of China's Yangtze River at intervals of 100-150 m to record sonar. signals of free-ranging finless porpoises (Neophocaena phocaenoides). Acoustic observations, concurrent with visual observations, were conducted at two occasions on 20-22 October 2003 and 17-19 October 2004. During a total of 42 h of observation, 316 finless porpoises were sighted and 7041 sonar signals were recorded by loggers. The acoustic data loggers recorded ultrasonic signals of porpoises clearly, and detected the presence of porpoises with a correct detection level of 77.6% and a false alarm level of 5.8% within an effective distance of 150 m. Results indicated that the stationed passive acoustic observation method was effective in detecting the presence of porpoises and showed potential in estimating the group size. A positive linear correlation between the number of recorded signals and the group size of sighted porpoises was indicated, although it is faced with some uncertainty and requires further investigation. (C) 2005 Acoustical Society of America.
关键词[WOS]: NEOPHOCAENA-PHOCAENOIDES ; ECHOLOCATION SIGNALS ; YANGTZE-RIVER ; BEHAVIOR ; CHINA
语种: 英语
WOS记录号: WOS:000231210500063
ISSN号: 0001-4966
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9178
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Natl Res Inst Fisheries Engn, Kashima, Ibaraki 3140421, Japan

Recommended Citation:
Wang, KX; Wang, D; Akamatsu, T; Li, SH; Xiao, JQ.A passive acoustic monitoring method applied to observation and group size estimation of finless porpoises,JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,2005,118(2):1180-1185
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