Density estimation of Yangtze finless porpoises using passive acoustic sensors and automated click train detection
Kimura, Satoko ; Akamatsu, Tomonari ; Li, Songhai ; Dong, Shouyue ; Dong, Lijun ; Wang, Kexiong ; Wang, Ding ; Arai, Nobuaki
2010
会议名称5th Animal Sonar Symposium
会议日期SEP 14-18, 2009
会议地点Kyoto, JAPAN
关键词NEOPHOCAENA-PHOCAENOIDES-ASIAEORIENTIALIS WILD HARBOR PORPOISES ECHOLOCATION SIGNALS BEAKED-WHALES PHOCOENA-PHOCOENA BEAM PATTERN SPERM-WHALES DATA LOGGER DOLPHINS ABUNDANCE
页码1435-1445
通讯作者Wang, KX, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
中文摘要A method is presented to estimate the density of finless porpoises using stationed passive acoustic monitoring. The number of click trains detected by stereo acoustic data loggers (A-tag) was converted to an estimate of the density of porpoises. First, an automated off-line filter was developed to detect a click train among noise, and the detection and false-alarm rates were calculated. Second, a density estimation model was proposed. The cue-production rate was measured by biologging experiments. The probability of detecting a cue and the area size were calculated from the source level, beam patterns, and a sound-propagation model. The effect of group size on the cue-detection rate was examined. Third, the proposed model was applied to estimate the density of finless porpoises at four locations from the Yangtze River to the inside of Poyang Lake. The estimated mean density of porpoises in a day decreased from the main stream to the lake. Long-term monitoring during 466 days from June 2007 to May 2009 showed variation in the density 0-4.79. However, the density was fewer than 1 porpoise/km(2) during 94% of the period. These results suggest a potential gap and seasonal migration of the population in the bottleneck of Poyang Lake. (c) 2010 Acoustical Society of America. [DOI: 10.1121/1.3442574]
收录类别SCI
会议录JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
会议录出版者ACOUSTICAL SOC AMER AMER INST PHYSICS
会议录出版地MELVILLE
语种英语
ISSN号0001-4966
WOS记录号WOS:000281799800053
内容类型会议论文
源URL[http://ir.ihb.ac.cn/handle/342005/13864]  
专题水生生物研究所_水生生物多样性与资源保护研究中心_会议论文
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Kimura, Satoko,Akamatsu, Tomonari,Li, Songhai,et al. Density estimation of Yangtze finless porpoises using passive acoustic sensors and automated click train detection[C]. 见:5th Animal Sonar Symposium. Kyoto, JAPAN. SEP 14-18, 2009.
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