How well can body size represent effects of the environment on demographic rates? Disentangling correlated explanatory variables.
How well can body size represent effects of the environment on demographic rates? Disentangling correlated explanatory variables.
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身体尺寸能在多大程度上代表环境对人口比率的影响？
DOI：
10.1111/1365-2656.12465
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Brooks ME
中科院分区：
文献类型：
--
作者：
Brooks ME
人口比率是由人口中的个体所经历的过去和当前环境的相互作用形成的。过去的环境通过选择和可塑性塑造个体状态，而与适应度相关的性状（例如个体大小）通常用于人口统计分析，以代表过去环境对人口统计率的影响。我们在一个研究充分的土壤螨实验系统中量化了个体大小如何捕捉种群过去和当前环境对人口统计率的影响。我们用一种新的多元回归方法分解了这些相互关联的变异来源，这种方法有助于理解响应和多重共线性解释变量之间的非线性关系。我们使用面积比例维恩图以图形方式呈现结果。我们的新方法是通过结合现有的方法并在其基础上进行扩展而发展起来的。我们表明，大小作为过去环境的代理的强度在生命率之间变化很大。例如，在这个有收入繁殖生活史的生物体中，环境对繁殖的影响大于个体大小，但大量重叠表明大小包含了过去环境对繁殖力的一些影响。这表明大小作为过去环境的代理的强度在物种内的生活史过程中可能差异很大，这种变化应该在基于特征的人口统计学或基于个体的方法中考虑，这些方法将表型特征作为状态变量。此外，代理的强度将取决于正在检查的状态变量和人口统计学比率;也就是说，不同的身体大小测量（例如长度，体积，质量，脂肪储存）将是各种生活史过程的更好或更差的代理。
Demographic rates are shaped by the interaction of past and current environments that individuals in a population experience. Past environments shape individual states via selection and plasticity, and fitness‐related traits (e.g. individual size) are commonly used in demographic analyses to represent the effect of past environments on demographic rates.We quantified how well the size of individuals captures the effects of a population's past and current environments on demographic rates in a well‐studied experimental system of soil mites. We decomposed these interrelated sources of variation with a novel method of multiple regression that is useful for understanding nonlinear relationships between responses and multicollinear explanatory variables. We graphically present the results using area‐proportional Venn diagrams. Our novel method was developed by combining existing methods and expanding upon them.We showed that the strength of size as a proxy for the past environment varied widely among vital rates. For instance, in this organism with an income breeding life history, the environment had more effect on reproduction than individual size, but with substantial overlap indicating that size encompassed some of the effects of the past environment on fecundity.This demonstrates that the strength of size as a proxy for the past environment can vary widely among life‐history processes within a species, and this variation should be taken into consideration in trait‐based demographic or individual‐based approaches that focus on phenotypic traits as state variables. Furthermore, the strength of a proxy will depend on what state variable(s) and what demographic rate is being examined; that is, different measures of body size (e.g. length, volume, mass, fat stores) will be better or worse proxies for various life‐history processes.
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影响因子：
2.9
作者：
Beckerman, AP;Benton, TG;Koesters, N
通讯作者：
Koesters, N
人口模型中生命率和状态变量之间的非线性关系。
影响因子：
4.8
作者：
J. Dahlgren;María B. García;J. Ehrlén
通讯作者：
J. Ehrlén
DOI：
--
发表时间：
2015-10
期刊：
--
影响因子：
--
作者：
Douglas M. Bates;M. Maechler;Ben Bolker;Steven C. Walker
通讯作者：
Douglas M. Bates;M. Maechler;Ben Bolker;Steven C. Walker
DOI：
10.1126/science.1173668
发表时间：
2009-07-24
期刊：
Science (New York, N.Y.)
影响因子：
--
作者：
Ozgul A;Tuljapurkar S;Benton TG;Pemberton JM;Clutton-Brock TH;Coulson T
通讯作者：
Coulson T
影响因子：
2.9
作者：
Plaistow, SJ;Lapsley, CT;Benton, TG
通讯作者：
Benton, TG