A passive acoustical survey method of finless porpoises

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 水生生物分子与细胞生物学研究中心 > 期刊论文

	A passive acoustical survey method of finless porpoises
	Akamatsu, Tomonari 1; Wang, Ding 2; Wang, Kexiong 2; Wei, Zhuo 2; Naito, Yasuhiko
刊名	FISHERIES SCIENCE
	2002
卷号	68 页码:294-297
关键词	echolocation dolphin porpoise sonar underwater acoustics data logger
ISSN号	0919-9268
英文摘要	The finless porpoises (Neophocaena phocaenoides) have narrow band and high frequency sonar signals, which are distinctive from background noises. Underwater sound monitoring with hydrophones placed along the sides of a research vessel, concurrent with visual observations was conducted in the Yangtze River from Wuhan to Poyang Lake in China. In a total of 774 km cruise, 588 finless porpoises were sighted by visual observation and 44,864 ultrasonic pulses were recorded by the acoustical observation system. The acoustic monitoring system could detect presence of the finless porpoises 88% of the time, 300 m away from the hydrophone. False alarm in the system occurred with a frequency of 0.9%. Such a high detection performance of the present system was due to a large sound pressure level of sonar signals and frequent sound production. Over 160 dB off-axis sound pressure level and sonar signal production at every 3 to 4 s were observed by an acoustic and a behavioral data logger. The high frequency acoustical observation is suggested as an effective method for field surveys of small cetaceans, which produce sonar signals.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Fisheries
研究领域[WOS]	Fisheries
收录类别	SCI
语种	英语
WOS记录号	WOS:000207780600067
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/28830]
专题	水生生物研究所_水生生物分子与细胞生物学研究中心_期刊论文
作者单位	1.Natl Res Inst Fisheries Engn, Kashima, Ibaraki 3140421, Japan 2.Chinese Acad Sci, Inst Hydrol, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Akamatsu, Tomonari,Wang, Ding,Wang, Kexiong,et al. A passive acoustical survey method of finless porpoises[J]. FISHERIES SCIENCE,2002,68:294-297.
APA	Akamatsu, Tomonari,Wang, Ding,Wang, Kexiong,Wei, Zhuo,&Naito, Yasuhiko.(2002).A passive acoustical survey method of finless porpoises.FISHERIES SCIENCE,68,294-297.
MLA	Akamatsu, Tomonari,et al."A passive acoustical survey method of finless porpoises".FISHERIES SCIENCE 68(2002):294-297.