Genetic effects of anthropogenic habitat fragmentation on remnant animal and plant populations: a meta-analysis

Habitat loss and fragmentation are among the biggest threats to biodiversity. Anthropogenic habitat fragmentation leads to small and isolated remnant plant and animal populations. The combination of increased random genetic drift, inbreeding, and reduced gene flow may substantially reduce genetic variation of remnant populations. However, the magnitude of these responses may depend on several poorly understood factors including organism group, habitat type of both the fragment and the surrounding matrix, life‐history traits, and time since fragmentation. We compiled data for 83 plant and 52 animal species and conducted a meta‐analysis following best practices to evaluate how these factors mediate the effects of anthropogenic habitat fragmentation. We calculated 206 effect sizes as correlations between one of four measures of population‐level genetic diversity and fragment area. All analyses were repeated using models of increasing complexity (traditional random‐effects models, multileve..., DataS1
TABLE S1. References of studies used in meta-analysis
TABLE S2. Prepared set of extracted data. Data file is in ‘long-format’, i.e., each row contains data for one combination of fragment, genetic measure (A, He, Sh, PLP, and Fis), species, genetic marker, and study
METADATA S2. Explanation of columns for TABLE S2
TABLE S3. Calculated effect sizes for main analysis.
METADATA S3. Explanation of columns for TABLE S3, , # Data from: Genetic effects of anthropogenic habitat fragmentation on remnant animal and plant populations: a meta-analysis

[https://doi.org/10.5061/dryad.44k7304](https://doi.org/10.5061/dryad.44k7304)

## Description of the data and file structure

This dataset supports the analysis published in Schlaepfer et al. 2018 Genetic effects of anthropogenic habitat fragmentation on remnant animal and plant populations: a meta-analysis. Ecosphere ([https://doi.org/10.1002/ecs2.2488](https://doi.org/10.1002/ecs2.2488)).

This dataset contains five files:

* DataS1_TableS1_PublishedDataReferences.csv. References of studies used in meta-analysis
* DataS1_TableS2_PublishedData.csv. Prepared set of extracted data. Data file is in ‘long-format’, i.e., each row contains data for one combination of fragment, genetic measure (*A*, *He*, *Sh*, *PLP*, and *Fis*), species, genetic marker, and study
* MetadataS1_Table_PublishedData_ColumnExplanation.csv. Explanation of columns for Table S2
* DataS1_Tabl...

栖息地丧失与破碎化是生物多样性面临的最主要威胁之一。人为栖息地破碎化导致残存的动植物种群规模缩小且彼此隔离。随机遗传漂变加剧、近亲繁殖增加以及基因流减少的共同作用，可能会显著降低残存种群的遗传变异水平。然而，这些响应的程度可能取决于若干尚未被充分理解的因素，包括生物类群、破碎斑块及其周围基质的栖息地类型、生活史特征以及破碎化发生后的时间跨度。我们收集了83种植物和52种动物的数据，并遵循最佳实践开展元分析，以评估这些因素如何介导人为栖息地破碎化的影响。我们计算了206个效应量，即种群水平遗传多样性的四项指标之一与斑块面积之间的相关性。所有分析均使用复杂度递增的模型重复进行（传统随机效应模型、多水平...，数据S1）
表S1：元分析中使用的研究参考文献
表S2：预处理的提取数据集。数据文件采用“长格式”，即每一行包含一个破碎斑块、遗传指标（A、He、Sh、PLP和Fis）、物种、遗传标记与研究的组合数据
元数据S2：表S2的列说明
表S3：主分析中计算的效应量
元数据S3：表S3的列说明

# 数据来源：人为栖息地破碎化对残存动植物种群的遗传效应：一项元分析
[https://doi.org/10.5061/dryad.44k7304]

## 数据与文件结构描述
本数据集为Schlaepfer等人2018年发表于《Ecosphere》的研究“人为栖息地破碎化对残存动植物种群的遗传效应：一项元分析”（https://doi.org/10.1002/ecs2.2488）提供数据支持。

本数据集包含五个文件：
* DataS1_TableS1_PublishedDataReferences.csv：元分析中使用的研究参考文献
* DataS1_TableS2_PublishedData.csv：预处理的提取数据集。数据文件采用“长格式”，即每一行包含一个破碎斑块、遗传指标（A、He、Sh、PLP和Fis）、物种、遗传标记与研究的组合数据
* MetadataS1_Table_PublishedData_ColumnExplanation.csv：表S2的列说明
* DataS1_Tabl...