An elevational phylogeographic diversity gradient in Neotropical birds is decoupled from speciation rates

A key question about macroevolutionary speciation rates is whether they are controlled by microevolutionary processes operating at the population level. For example, does spatial variation in population genetic differentiation underlie geographical gradients in speciation rates? Previous work suggests speciation rates increase with elevation in Neotropical birds, but underlying population-level gradients remain unexplored. Here, we characterize elevational phylogeographic diversity between montane and lowland birds in the megadiverse Andes-Amazonian system and assess its relationship to speciation rates to evaluate the link between population-level differentiation and species-level diversification. We aggregated and georeferenced nearly 7000 mitochondrial DNA sequences across 103 species or species complexes in the Andes and Amazonia and used these sequences to describe phylogeographic differentiation across both regions. Our results show increased levels of both discrete and continuous..., , , # An elevational phylogeographic diversity gradient in Neotropical birds is decoupled from speciation rates

[https://doi.org/10.5061/dryad.7pvmcvf0j](https://doi.org/10.5061/dryad.7pvmcvf0j)

README for code and data from Wacker and Winger (2023) \"An elevational phylogeographic diversity gradient in Neotropical birds is decoupled from speciation rates.\" The manuscript demonstrates an elevational gradient in phylogeographic diversity of 103 birds across the megadiverse Andes-Amazonian system, but fails to find a statistically-supported relationship between the rates of population differentiation and the rates of speciation. Here, we include the mtDNA sequence data and metadata; the code for assessing population structure, conducting PGLS, and other analyses; and figures and supplementary materials associated with the main manuscript.

## Description of the data and file structure

**Data.zip:** This folder contains sequence data for all species in the project (fasta files, nexus files, ...

关于宏观进化（macroevolutionary）成种速率的核心议题之一，是其是否受种群尺度下的微观进化（microevolutionary）过程调控。例如，种群遗传分化的空间异质性是否为成种速率地理梯度的内在驱动因素？既往研究表明，新热带界鸟类的成种速率随海拔升高而升高，但背后对应的种群尺度分化梯度仍未被探索。本研究对物种多样性极高的安第斯-亚马逊系统中的山地与低地鸟类的系统地理（phylogeographic）多样性进行了表征，并评估其与成种速率的关联，以检验种群水平分化与物种水平多样化之间的联系。我们收集并完成地理配准的近7000条线粒体DNA（mitochondrial DNA, mtDNA）序列，涵盖安第斯与亚马逊地区的103个物种或物种复合体，并利用这些序列描述了两个区域间的系统地理分化水平。本研究结果显示，离散型与连续型……

# 《新热带界鸟类的海拔系统地理多样性梯度与成种速率解耦》
https://doi.org/10.5061/dryad.7pvmcvf0j

本文件为Wacker与Winger（2023）发表的论文《新热带界鸟类的海拔系统地理多样性梯度与成种速率解耦》配套代码与数据集的说明文档。该研究揭示了物种丰富的安第斯-亚马逊系统中103种鸟类的系统地理多样性存在海拔梯度，但未发现种群分化速率与成种速率之间存在统计学上的显著关联。本数据集包含线粒体DNA序列数据与元数据（metadata）、用于评估种群结构、开展系统发育广义最小二乘（Phylogenetic Generalized Least Squares, PGLS）分析及其他相关分析的代码，以及与主论文配套的图表与补充材料。

## 数据与文件结构说明
**Data.zip：** 该文件夹包含本项目中所有物种的序列数据（FASTA格式文件、NEXUS格式文件……）