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arXiv 1911.03549stat.ME
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具有机械选择函数的动物运动模型

Animal Movement Models with Mechanistic Selection Functions

Mevin B. Hooten, Xinyi Lu, Martha J. Garlick, James A. Powell

摘要:

一套统计方法被用来研究动物的运动。这些方法中的大多数以三种方式之一处理动物遥测数据:离散过程,连续过程或点过程。我们简要地回顾了这些方法,然后集中在后者。在点过程的背景下,所谓的资源选择分析是统计处理动物遥测数据的最常见方法之一。然而,大多数资源选择分析提供基于点过程模型的近似推理。这些模型的形式仅限于几种类型的规范,这些规范提供了关于相对资源使用的推断,以及不太常见的使用概率。对于更一般的时空点过程模型,最常见的分析类型通常采用数据增强方法,该方法用于创建可以用条件逻辑斯谛回归分析的二进制数据集。我们表明,条件逻辑斯谛回归可能性可以推广到适应各种替代规格的资源选择。然后,我们提供了一个例子的情况下,时空点过程模型相吻合的机械模型表示为偏微分方程从运动的第一原理推导出的运动所隐含的。我们表明,从这种形式的点过程模型的推理是直观的(并可能是有用的管理和保护)通过分析一组遥测数据从美国科罗拉多州的美洲狮,了解空间明确的环境条件对运动行为的影响这个物种。

英文摘要:

A suite of statistical methods are used to study animal movement. Most of these methods treat animal telemetry data in one of three ways: as discrete processes, as continuous processes, or as point processes. We briefly review each of these approaches and then focus in on the latter. In the context of point processes, so-called resource selection analyses are among the most common way to statistically treat animal telemetry data. However, most resource selection analyses provide inference based on approximations of point process models. The forms of these models have been limited to a few types of specifications that provide inference about relative resource use and, less commonly, probability of use. For more general spatio-temporal point process models, the most common type of analysis often proceeds with a data augmentation approach that is used to create a binary data set that can be analyzed with conditional logistic regression. We show that the conditional logistic regression likelihood can be generalized to accommodate a variety of alternative specifications related to resource selection. We then provide an example of a case where a spatio-temporal point process model coincides with that implied by a mechanistic model for movement expressed as a partial differential equation derived from first principles of movement. We demonstrate that inference from this form of point process model is intuitive (and could be useful for management and conservation) by analyzing a set of telemetry data from a mountain lion in Colorado, USA, to understand the effects of spatially explicit environmental conditions on movement behavior of this species.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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