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A passive acoustic monitoring method applied to observation and group size estimation of finless porpoises
Wang, KX; Wang, D; Akamatsu, T; Li, SH; Xiao, JQ; Wang, KX, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2005-08-01
Source PublicationJOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
ISSN0001-4966
Volume118Issue:2Pages:1180-1185
AbstractThe 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.; 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.
SubtypeArticle
KeywordNeophocaena-phocaenoides Echolocation Signals Yangtze-river Behavior China
DepartmentChinese 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
Subject AreaAcoustics
DOI10.1121/1.1945487
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaAcoustics ; Audiology & Speech-Language Pathology
WOS SubjectAcoustics ; Audiology & Speech-Language Pathology
WOS IDWOS:000231210500063
WOS KeywordNEOPHOCAENA-PHOCAENOIDES ; ECHOLOCATION SIGNALS ; YANGTZE-RIVER ; BEHAVIOR ; CHINA
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/9178
Collection期刊论文
Corresponding AuthorWang, KX, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Affiliation1.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
GB/T 7714
Wang, KX,Wang, D,Akamatsu, T,et al. A passive acoustic monitoring method applied to observation and group size estimation of finless porpoises[J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,2005,118(2):1180-1185.
APA Wang, KX,Wang, D,Akamatsu, T,Li, SH,Xiao, JQ,&Wang, KX, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2005).A passive acoustic monitoring method applied to observation and group size estimation of finless porpoises.JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,118(2),1180-1185.
MLA Wang, KX,et al."A passive acoustic monitoring method applied to observation and group size estimation of finless porpoises".JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 118.2(2005):1180-1185.
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