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首页> 外文期刊>Marine & freshwater research >Does the telemetry technology matter? Comparing estimates of aquatic animal space-use generated from GPS-based and passive acoustic tracking
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Does the telemetry technology matter? Comparing estimates of aquatic animal space-use generated from GPS-based and passive acoustic tracking

机译：遥测技术重要吗？比较基于GPS和被动声学跟踪的水生动物空间利用的估算

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摘要

Underwater passive acoustic (PA) telemetry is becoming the preferred technology for investigating animal movement in aquatic systems; however, much of the current statistical tools for telemetry data were established from global positioning system (GPS)-based data. To understand the appropriateness of these tools for PA telemetry, we dual-tagged free-ranging aquatic animals that exist at the air-water interface (Crocodylus porosus, n=14). The location of each animal was simultaneously recorded over a 3-month period by fixed acoustic receivers and satellite positioning. Estimates of minimum travel distance and home range (HR) were then calculated from the PA and GPS datasets. The study revealed significant disparity between telemetry technologies in estimates of minimum travel distance and HR size. Of the five HR measures investigated, the linear distance measure produced the most comparable estimates of HR size and overlap. The kernel utilisation distribution with a reference smoothing parameter function and ad hoc function, however, produced comparable estimates when raw acoustic detections were grouped into periods when animals were within and between receiver detection fields. The study offers guidelines on how to improve the accuracy and precision of space-use estimates from PA telemetry, even in receiver arrangements with large areas of non-detection.
机译：水下无源声学（PA）遥测技术正成为研究水生系统中动物运动的首选技术。但是，目前许多遥测数据的统计工具都是基于基于全球定位系统（GPS）的数据建立的。为了了解这些工具对PA遥测的适用性，我们对存在于空气-水界面（Crocodylus porosus，n = 14）的双标签自由放养水生动物进行了双重标记。通过固定的声音接收器和卫星定位，同时在3个月的时间内同时记录了每只动物的位置。然后，从PA和GPS数据集计算出最小行驶距离和起始范围（HR）的估计值。该研究揭示了遥测技术之间在估计最小行驶距离和心率大小方面的巨大差异。在所研究的五种人力资源量度中，线性距离量度得出的人力资源大小和重叠量具有最可比的估计。但是，当将原始声音检测分组为动物处于接收器检测场之内和之间时，将具有参考平滑参数函数和ad hoc函数的内核利用率分布产生可比较的估计。这项研究提供了有关如何提高PA遥测空间使用估计的准确性和精度的指南，即使在具有大面积未探测区域的接收器布置中也是如此。

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