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首页> 美国卫生研究院文献>Wiley-Blackwell Online Open >Processing of acceleration and dive data on‐board satellite relay tags to investigate diving and foraging behaviour in free‐ranging marine predators
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Processing of acceleration and dive data on‐board satellite relay tags to investigate diving and foraging behaviour in free‐ranging marine predators

机译：处理机载卫星中继标签上的加速度和潜水数据以调查自由放养的海洋捕食者中的潜水和觅食行为

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class="enumerated" style="list-style-type:decimal" id="mee312845-list-0001">Biologging technologies are changing the way in which the marine environment is observed and monitored. However, because device retrieval is typically required to access the high‐resolution data they collect, their use is generally restricted to those animals that predictably return to land. Data abstraction and transmission techniques aim to address this, although currently these are limited in scope and do not incorporate, for example, acceleration measurements which can quantify animal behaviours and movement patterns over fine‐scales.In this study, we present a new method for the collection, abstraction and transmission of accelerometer data from free‐ranging marine predators via the Argos satellite system. We test run the technique on 20 juvenile southern elephant seals Mirounga leonina from the Kerguelen Islands during their first months at sea following weaning. Using retrieved archival data from nine individuals that returned to the colony, we compare and validate abstracted transmissions against outputs from established accelerometer processing procedures.Abstracted transmissions included estimates, across five segments of a dive profile, of time spent in prey catch attempt (PrCA) behaviours, swimming effort and pitch. These were then summarised and compared to archival outputs across three dive phases: descent, bottom and ascent. Correlations between the two datasets were variable but generally good (dependent on dive phase, marginal R 2 values of between .45 and .6 to >.9) and consistent between individuals. Transmitted estimates of PrCA behaviours and swimming effort were positively biased to those from archival processing.Data from this study represent some of the first remotely transmitted quantifications from accelerometers. The methods presented and analysed can be used to provide novel insight towards the behaviours and movements of free‐ranging marine predators, such as juvenile southern elephant seals, from whom logger retrieval is challenging. Future applications could however benefit from some adaption, particularly to reduce positive bias in transmitted PrCA behaviours and swimming effort, for which this study provides useful insight.
机译：class =“ enumerated” style =“ list-style-type：decimal” id =“ mee312845-list-0001”> <！-list-behavior = enumerated prefix-word = mark-type = decimal max-label- size = 0-> 生物记录技术正在改变观察和监测海洋环境的方式。但是，由于通常需要使用设备检索来访问它们收集的高分辨率数据，因此，通常将其使用仅限于可预测返回土地的那些动物。数据抽象和传输技术旨在解决这一问题，尽管目前它们的范围有限，并且没有包含例如可以量化动物行为和精细运动模式的加速度测量值。 ，我们提出了一种新方法，用于通过Argos卫星系统从自由放养的海洋掠食者收集，提取和传输加速度计数据。在断奶后的头几个月中，我们在来自克格伦群岛的20只南部小象海豹Mirounga leonina上进行了测试。使用从返回该殖民地的9个人中获取的档案数据，我们比较并验证了已建立的加速度计处理程序输出的抽象传输。 抽象传输包括在潜水剖面的五个部分中估算的花费时间捕食尝试（PrCA）行为，游泳努力和俯仰。然后将其汇总并与三个潜水阶段的档案输出进行比较：下降，底部和上升。这两个数据集之间的相关性是可变的，但通常是良好的（取决于潜水阶段，边际R 2 值在.45和.6至> .9之间）并且个体之间是一致的。 PrCA行为和游泳努力的传输估计值与档案处理过程中的估计值成正比。 该研究的数据代表了加速度计进行的首批远程量化。所介绍和分析的方法可用于提供对自由放养的海洋捕食者的行为和运动的新颖见解，例如记录员从中寻找挑战的南部南方象海豹。但是，未来的应用可能会受益于某些适应，特别是减少传播的PrCA行为和游泳努力中的正偏见，为此研究提供了有用的见识。

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