A comparison of three survey methods for collecting bat echolocation calls and species-accumulation rates from nightly Anabat recordings
A comparison of three survey methods for collecting bat echolocation calls and species-accumulation rates from nightly Anabat recordings
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从夜间阿纳巴特记录中收集蝙蝠回声定位呼叫和物种积累率的三种调查方法的比较
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
C. Pavey
中科院分区：
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作者：
D. Milne;M. Armstrong;A. Fisher;T. Flores;C. Pavey
蝙蝠调查经常使用超声波探测器进行，以确定存在于一个地区的回声定位呼叫的基础上的身份的物种。我们比较了使用Anabat II探测器的三种技术：探测器指向沿着轨道（飞行轨道）与探测器指向轨道（非飞行轨道）;录音输出到盒式磁带（模拟）与直接录音到计算机（数字）;主动手持录音与静态自动录音。此外，我们推导出一个物种积累曲线，从所有夜间Anabat记录在干湿热带地区的北领地。我们发现飞行路线和非飞行路线记录之间没有显着差异;显着更多的电话被确定从数字录音;和显着更多的物种被检测到使用手持比静态录音。物种积累分析表明，在一个网站上实现一个令人满意的（80%）的蝙蝠物种库存所需的最短时间是在日落后的三个小时内。我们使用我们的研究结果提出建议，蝙蝠调查的设计使用Anabat II探测器。
Bat surveys are frequently undertaken using ultrasonic detectors to determine the species present in an area on the basis of the identity of echolocation calls. We compared three techniques for using the Anabat II detector: the detector pointed along tracks (flyways) versus the detector pointed across tracks (non-flyways); recording output to audio cassette (analogue) versus direct recording to computer (digital); and active hand-held recording versus static automatic recording. In addition, we derived a species-accumulation curve from all-night Anabat recordings in the wet–dry tropics of the Northern Territory. We found no significant difference between flyway and non-flyway recordings; significantly more calls were identified from digital recordings; and significantly more species were detected using hand-held than static recordings. Species-accumulation analysis suggests that the minimum time required to achieve a satisfactory (80%) inventory of bat species at a site is during the three-hour period immediately after sunset. We use our findings to make recommendations for the design of bat surveys using the Anabat II detector.