Decomposing the stochastic growth rate with nonlinear effects: data and R code

Data and R code from publication: Le Coeur, C., Yoccoz, N.G., Salguero-Gomez, R., Vindenes, Y. (accepted). Life history adaptations to fluctuating environments: Combined effects of demographic buffering and labillity, Ecology Letters Files: - DecompositionStochGrowthRate.R: an R file with code to decompose the stochastic population growth into main components capturing effects of nonlinearity in demographic parameters as a function of an environmental driver z, and effects of variance-covariance among the parameters. Both the analytical and simulation approaches are presented. - ComadreMPM154.RData: Selection of age- and stage-structured matrix population models (MPMs) from the COMADRE animal database (v.4.20.5; Salguero-Gomez et al. 2016; https://compadre-db.org/Data/Releases). These MPMs are used as a starting point to our theoretical exploration across generation time, considering different scenarios for effects of the environment z on the demographic parameters.本数据集包含已接收论文《波动环境下的生活史适应：种群缓冲与易变性的联合效应》（作者：Le Coeur, C.、Yoccoz, N.G.、Salguero-Gomez, R.、Vindenes, Y.）的配套数据与R代码。 包含的文件如下： 1. DecompositionStochGrowthRate.R：该R脚本用于将随机种群增长率分解为两大核心组分，分别刻画环境驱动因子z作用下种群统计参数的非线性效应，以及参数间的方差-协方差结构，同时涵盖解析解法与模拟方法两种实现路径。 2. ComadreMPM154.RData：从COMADRE动物种群矩阵数据库（版本v.4.20.5；Salguero-Gomez等，2016；https://compadre-db.org/Data/Releases）中筛选得到的年龄与阶段结构化种群矩阵模型（matrix population models, MPMs）子集。本数据集以这些MPMs作为理论探索的起点，围绕世代时间开展分析，并针对环境因子z对种群统计参数的影响设置了多类情景。