Diversity of endemic cold-water amphipods threatened by climate warming in northwestern China

Aim: Climate change threatens freshwater faunal diversity. To prioritize areas for conservation, patterns in the distribution of species must be understood. We apply genetic analysis and species distribution models to identify patterns in the distribution of freshwater amphipods around Xinjiang, China, and project the impact of climate change on endemic species.
Location: Xinjiang, China.
Methods: A time-calibrated tree containing 37 freshwater amphipod molecular samples from Xinjiang is built to calculate phylogenetic diversity, the standardized effect sizes of phylogenetic diversity, weighted endemism, and phylogenetic endemism, in 100 × 100 km grid cells. Niche differentiation among species in an area of high phylogenetic endemism is explored using n-dimensional hypervolumes and principal components analyses. Present-day and projected future suitability of habitat of endemic freshwater amphipod species is described using species distribution models.
Results: Areas of high freshwater ..., , , # Diversity of endemic cold-water amphipods threatened by climate warming in northwestern China

[https://doi.org/10.5061/dryad.h44j0zpsg](https://doi.org/10.5061/dryad.h44j0zpsg)

Datasets for phylogenetic analysis.

## Description of the data and file structure

1.gene\_partition.txt: Used to explain the position of each gene in a tandem sequence.
2.xinjiang\_28S\_COI.fasta: A file of tandem sequence.
3.RAxML\_xinjiang\_tree.tre: A phylogenetic tree from the 52-tip data set.
4.MCMC\_tree.tre:  A time-calibrated tree using three calibration points.

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