Literature review on the effect of conspecific density on animal dispersal (2000-2023)

We review empirical studies of animal dispersal in relation to conspecific density to examine the evidence for density-dependent dispersal among taxa and test whether reports of its occurrence are taxon-specific and/or biased by the methodology employed. We conducted a thorough review of the literature (2000 - 2023) and found k = 97 empirical studies of amphibians, birds, fishes, invertebrates, mammals, or reptiles that had tested for a correlation between conspecific density and animal dispersal. From each, we derived the correlation coefficient of the relationship between density and dispersal, which we z-transformed to obtain the effect size, Zr. We also extracted and compiled information on taxonomic group, sex, age, migratory behavior, experimental setup, dispersal metric, density metric, and variable type, as well as temporal and spatial scale to test their relationships with Zr using linear regressions and multilevel mixed-effect modeling., , , # Literature review on the effect of conspecific density on animal dispersal (2000-2023)

[https://doi.org/10.5061/dryad.cz8w9gj6c](https://doi.org/10.5061/dryad.cz8w9gj6c)

## Description of the data and file structure

This data was extracted from studies included in the systematic review on density-dependent dispersal by Jreidini and Green (2024) in Movement Ecology.

For information on this study, contact primary author Nathalie Jreidini: [[e-mail]](mailto:[e-mail]). 

All data extracted from studies included in the meta-analysis were either obtained from the corresponding manuscript or the open-access dataset linked to the study.

For information on individual studies included in the review, the short-hand citations are found in the CSV file and the list of citations can be found in Appendix 1 of the manuscript.

Variables included in the dataset and their explanation:

* Citation: short-hand citation of the article/study
* Year: Year of ...

本研究围绕与同种密度（conspecific density）相关的动物扩散实证研究展开系统综述，旨在检验不同生物类群中密度依赖型扩散（density-dependent dispersal）的存在证据，并验证相关报道是否具有类群特异性，抑或受所采用研究方法的影响而存在偏倚。我们对2000年至2023年的相关文献进行了全面梳理，最终纳入97项针对两栖类、鸟类、鱼类、无脊椎动物、哺乳类及爬行类的实证研究，上述研究均检验了同种密度与动物扩散之间的相关性。从每项研究中，我们提取了密度与扩散关系的相关系数，并通过Z转换（z-transformed）得到效应量Zr。同时，我们还提取并整理了类群、性别、年龄、迁徙行为、实验设计（experimental setup）、扩散度量指标（dispersal metric）、密度度量指标（density metric）、变量类型及时空尺度等信息，随后借助线性回归与多层混合效应模型（multilevel mixed-effect modeling），检验上述变量与Zr之间的关联。

# 同种密度对动物扩散影响的文献综述（2000-2023）

[https://doi.org/10.5061/dryad.cz8w9gj6c](https://doi.org/10.5061/dryad.cz8w9gj6c)

## 数据与文件结构说明
本数据集源自Jreidini与Green（2024）发表于《Movement Ecology》的密度依赖型扩散系统综述（systematic review）研究。如需了解该研究详情，可联系第一作者Nathalie Jreidini：[[e-mail]](mailto:[e-mail])。
本荟萃分析（meta-analysis）纳入的所有研究数据，均来自对应研究论文或该研究附带的开放获取数据集。
综述中纳入的单项研究的简略引用信息可在CSV文件中查看，完整引用列表可参见论文的附录1。

数据集包含的变量及其解释如下：
* 引用：对应文章/研究的简略引用标识
* 年份：……的年份