Identification of threatened rodent species using infrared and white-flash camera traps
Identification of threatened rodent species using infrared and white-flash camera traps
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DOI：
10.1071/am17016
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发表时间：
2018-01-01
影响因子：
1.2
通讯作者：
Phillips, Benjamin L.
中科院分区：
文献类型：
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作者：
Burns, Phoebe A.;Parrott, Marissa L.;Phillips, Benjamin L.
相机诱捕已经发展成为一种有效的技术，用于收集许多物种的存在/不存在数据;然而，较小的哺乳动物，如啮齿动物，往往很难在图像中识别。由于与类似大小的小型哺乳动物物种共存，以及摄像机设置无法提供足够的图像质量，因此无法进行识别。在这里，我们描述的调查程序识别两个小的，受威胁的啮齿动物物种-烟鼠（Pseudomys fumeus）和新荷兰小鼠（P. novaehollanshine）-使用白色闪光灯和红外相机陷阱。我们测试了观察者是否能准确地识别每个物种，以及小型哺乳动物的经验是否会影响准确性。伪鼠fumeus是20倍，不太可能被误识别的白色闪光图像比红外线，和观察者的经验影响的准确性只为红外图像，它占所有观察者的方差。在两种闪光类型中，新霍兰疟原虫的错误识别更常见：假阳性（>0.21）比假阴性（>0.21）更常见。
Camera trapping has evolved into an efficient technique for gathering presence/absence data for many species; however, smaller mammals such as rodents are often difficult to identify in images. Identification is inhibited by co-occurrence with similar-sized small mammal species and by camera set-ups that do not provide adequate image quality. Here we describe survey procedures for identification of two small, threatened rodent species - smoky mouse (Pseudomys fumeus) and New Holland mouse (P. novaehollandiae) - using white-flash and infrared camera traps. We tested whether observers could accurately identify each species and whether experience with small mammals influenced accuracy. Pseudomys fumeus was 20 times less likely to be misidentified on white-flash images than infrared, and observer experience affected accuracy only for infrared images, where it accounted for all observer variance. Misidentifications of P. novaehollandiae were more common across both flash types: false positives (>0.21) were more common than false negatives (