Density estimation of Yangtze finless porpoises using passive acoustic sensors and automated click train detection.
Density estimation of Yangtze finless porpoises using passive acoustic sensors and automated click train detection.
复制标题
使用被动声学传感器和自动点击序列检测来估计长江江豚的密度。
DOI：
10.1121/1.3442574
复制
发表时间：
2010-09
期刊：
影响因子：
--
通讯作者：
中科院分区：
文献类型：
--
作者：
提出了一种利用被动声监测估算江豚密度的方法。由立体声数据记录仪（A-标签）检测到的点击列车的数量被转换为海豚密度的估计。首先，开发了一种自动离线滤波器来检测噪声中的点击串，并计算了检测率和虚警率。其次，提出了密度估计模型。通过生物记录实验测量线索产生率。检测到提示的概率和区域大小是根据源水平、波束模式和声音传播模型计算的。研究了群体大小对线索检测率的影响。第三，应用该模型对长江至鄱阳湖内四个江豚密度进行了估算。江豚的日平均密度从干流到湖泊呈下降趋势。2007年6月至2009年5月466天的长期监测显示，密度变化范围为0-4.79。然而，在94%的时间里，密度低于1只海豚/km（2）。这些结果表明鄱阳湖瓶颈区存在潜在的种群缺口和季节性迁移。
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.
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影响因子：
2.4
作者：
H. Whitehead;Linda S. Weilgart
通讯作者：
H. Whitehead;Linda S. Weilgart
DOI：
10.1121/1.2126919
发表时间：
2005-12
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Songhai Li;Ke‐Xiong Wang;Ding Wang;T. Akamatsu
通讯作者：
Songhai Li;Ke‐Xiong Wang;Ding Wang;T. Akamatsu
DOI：
10.1121/1.1945487
发表时间：
2005-08
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Ke‐Xiong Wang;Ding Wang;T. Akamatsu;Songhai Li;Jianqiang Xiao
通讯作者：
Ke‐Xiong Wang;Ding Wang;T. Akamatsu;Songhai Li;Jianqiang Xiao
DOI：
10.1109/ut.2007.370755
发表时间：
2007-02
期刊：
2007 Symposium on Underwater Technology and Workshop on Scientific Use of Submarine Cables and Related Technologies
影响因子：
--
作者：
T. Akamatsu;J. Teilmann;Lee A. Miller;J. Tougaard;Rune Dietz;Ding Wang;Ke‐Xiong Wang;Ursula Siebert;Yasuhiko Naito
通讯作者：
T. Akamatsu;J. Teilmann;Lee A. Miller;J. Tougaard;Rune Dietz;Ding Wang;Ke‐Xiong Wang;Ursula Siebert;Yasuhiko Naito
影响因子：
0.8
作者：
Akamatsu, T;Matsuda, A;Oota, K
通讯作者：
Oota, K