Data from: Less favorable climates constrain demographic strategies in plants

AbstractCorrelative species distribution models are based on the observed relationship between species’ occurrence and macroclimate or other environmental variables. In climates predicted less favourable populations are expected to decline, and in favourable climates they are expected to persist. However, little comparative empirical support exists for a relationship between predicted climate suitability and population performance. We found that the performance of 93 populations of 34 plant species worldwide – as measured by in situ population growth rate, its temporal variation and extinction risk – was not correlated with climate suitability. However, correlations of demographic processes underpinning population performance with climate suitability indicated both resistance and vulnerability pathways of population responses to climate: in less suitable climates, plants experienced greater retrogression (resistance pathway) and greater variability in some demographic rates (vulnerability pathway). While a range of demographic strategies occur within species’ climatic niches, demographic strategies are more constrained in climates predicted to be less suitable., Usage notesSupporting InformationFile (1) COMPADRE Plant Matrix Database version 3.0.0 downloaded on July 21, 2014; File (2) Data spreadsheet with population-level demographic metrics and climate suitability values (calculated using the R codes appended here); File (3) R scripts for demographic metric calculations, Species Distribution Models and statistical analyses; File (4) Projected maps based on the Species Distribution Models for species in this study.Csergo et al ELE.zip

摘要
关联物种分布模型（Correlative Species Distribution Models）基于物种出现记录与大气候或其他环境变量之间的观测关联构建。在被预测为气候较不适宜的区域，物种种群预计会出现衰退；而在气候适宜区域，种群则得以存续。然而，目前鲜有比较性实证研究能够证实预测气候适宜性与种群表现之间存在关联。本研究发现，全球34种植物的93个种群，其表现以原位种群增长率、增长率的时间变异及灭绝风险为衡量指标，与气候适宜性并无关联。不过，支撑种群表现的种群动态过程与气候适宜性之间的关联，揭示了种群对气候响应的两种路径：抗性路径与脆弱性路径——在气候适宜性较低的生境中，植物种群衰退程度更高（抗性路径），且部分种群动态速率的变异程度更大（脆弱性路径）。尽管物种气候生态位内存在多样的种群动态策略，但在被预测为不适宜的气候条件下，种群动态策略会受到更多限制。

使用说明
补充材料：
文件(1)：2014年7月21日下载的COMPADRE植物矩阵数据库（COMPADRE Plant Matrix Database）3.0.0版本；
文件(2)：包含种群水平种群动态指标与气候适宜性数值的电子表格（气候适宜性数值通过本文附随的R代码计算得到）；
文件(3)：用于种群动态指标计算、物种分布模型构建与统计分析的R脚本；
文件(4)：基于本研究物种种群分布模型生成的预测分布图。
Csergo等人 ELE.zip