Defining null expectations for animal site fidelity.

Defining null expectations for animal site fidelity.
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定义动物场所保真度的零期望。

DOI:
10.1111/ele.14148
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发表时间:
2023
期刊:
影响因子:
8.8
通讯作者:
Picardi S
Picardi S
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Picardi S

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地点可持续性-倾向于返回到以前访问过的位置-是广泛的分类群。回报可能由几种机制驱动,包括记忆,栖息地选择或机会;然而,基于模式的定义将不同的生成机制归类在同一个标签下的“站点可持续性”,通常假设记忆是主要驱动力。我们提出了一个可操作的定义网站保真度的回报模式,偏离来自一个无记忆的运动模型的零期望。首先,使用基于代理的模拟,我们表明,在没有记忆的情况下,内在运动特征和外在景观特征是回报模式的关键决定因素,即使是随机运动也可能产生很大的回报概率。其次,我们说明了如何实施我们的框架经验,建立生态意义,系统特定的零期望网站保真度。我们的方法提供了一个概念和操作框架,以测试假设的网站保真度跨系统和规模。
Site fidelity—the tendency to return to previously visited locations—is widespread across taxa. Returns may be driven by several mechanisms, including memory, habitat selection, or chance; however, pattern‐based definitions group different generating mechanisms under the same label of ‘site fidelity’, often assuming memory as the main driver. We propose an operational definition of site fidelity as patterns of return that deviate from a null expectation derived from a memory‐free movement model. First, using agent‐based simulations, we show that without memory, intrinsic movement characteristics and extrinsic landscape characteristics are key determinants of return patterns and that even random movements may generate substantial probabilities of return. Second, we illustrate how to implement our framework empirically to establish ecologically meaningful, system‐specific null expectations for site fidelity. Our approach provides a conceptual and operational framework to test hypotheses on site fidelity across systems and scales.
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