How range residency and long-range perception change encounter rates
How range residency and long-range perception change encounter rates
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DOI：
10.1016/j.jtbi.2020.110267
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发表时间：
2020-08-07
影响因子：
2
通讯作者：
Calabrese, Justin M.
中科院分区：
文献类型：
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作者：
Martinez-Garcia, Ricardo;Fleming, Christen H.;Calabrese, Justin M.
相遇率将运动策略与种内和种间的相互作用联系起来，因此将个体运动行为转化为更高层次的生态过程。事实上，大量相互作用的人口理论都建立在质量作用定律的基础上，而质量作用定律可以从封闭容器中的布朗运动假设中推导出来，只有局部感知。这些假设意味着完全统一的空间使用，个人的家庭范围相当于人口范围，并且遇到依赖于实际交叉的移动路径。然而，越来越多的经验证据表明，动物对空间的利用是不均匀的，它们占据的家园范围比种群范围小得多，而且往往具有非本地感知能力。在这里，我们探讨这些经验支持的行为如何改变成对相遇率。具体来说，我们在Ornstein-Uhlenbeck运动下推导出新的相遇率解析表达式，该表达式的特点是空间使用不均匀，并且允许个体的家庭范围与群体范围不同。我们将基于ou的相遇预测与反射布朗运动的预测进行比较，从反射布朗运动中可以推导出质量作用定律。对于这两个模型，我们进一步探讨了感知尺度和主场距离大小之间的相互作用如何影响相遇率。我们发现，忽略现实的运动和感知行为可能导致系统的，不可忽略的偏差在遭遇率预测。(C) 2020作者。Elsevier Ltd.出版。
Encounter rates link movement strategies to intra- and inter-specific interactions, and therefore translate individual movement behavior into higher-level ecological processes. Indeed, a large body of interacting population theory rests on the law of mass action, which can be derived from assumptions of Brownian motion in an enclosed container with exclusively local perception. These assumptions imply completely uniform space use, individual home ranges equivalent to the population range, and encounter dependent on movement paths actually crossing. Mounting empirical evidence, however, suggests that animals use space non-uniformly, occupy home ranges substantially smaller than the population range, and are often capable of nonlocal perception. Here, we explore how these empirically supported behaviors change pairwise encounter rates. Specifically, we derive novel analytical expressions for encounter rates under Ornstein-Uhlenbeck motion, which features non-uniform space use and allows individual home ranges to differ from the population range. We compare OU-based encounter predictions to those of Reflected Brownian Motion, from which the law of mass action can be derived. For both models, we further explore how the interplay between the scale of perception and home-range size affects encounter rates. We find that neglecting realistic movement and perceptual behaviors can lead to systematic, non-negligible biases in encounter-rate predictions. (C) 2020 The Authors. Published by Elsevier Ltd.