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
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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 |
推荐引用方式 GB/T 7714 | 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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