DOI: 10.5061/dryad.2jm63xstb
title: Distribution patterns and drivers of non-endemic and endemic glires species in China

description: Spatial patterns and determinants of species richness in complex
 geographical regions are important subjects of current biogeography and
 biodiversity conservation research. Glires are small herbivorous mammal
 species with limited migratory ability that may serve as an indicator of
 biodiversity and ecosystems. Herein, we aimed to evaluate how multiple
 ecological hypotheses could explain the species richness patterns of
 glires in China. Initially, we constructed a mapping grid of 80 × 80 km2
 squares which covered China’s land mass and mapped the distribution ranges
 of the 237 glires species that had recorded. The glires taxa were
 separated into three response variables based on their distribution: (a)
 all species, (b) non-endemic species, and (c) endemic species. The species
 richness patterns of the response variables were evaluated using four
 predictor sets: (a) hydrothermal characteristics, (b) climatic
 seasonality, (c) habitat heterogeneity, and (d) human factors. We
 performed regression tree analysis, multiple linear regression analysis,
 and variation partitioning analyses to determine the effects of predictors
 on spatial species patterns. The results showed that the distribution
 pattern of species richness was the highest in the Hengduan Mountains and
 surrounding areas in southwest China. However, only a few endemic species
 adapted to high-latitude environments. It was found that there are
 differences in the determinants between non-endemic and endemic species.
 Habitat heterogeneity was the most influential determinant for the
 distribution patterns of non-endemic species richness. Climatic
 seasonality was the best predictor to determine the richness distribution
 pattern of endemic species, whereas this was least affected by human
 factors. Furthermore, it should be noted, that hydrothermal
 characteristics were not strong predictors of richness patterns for all or
 non-endemic species, which may be due to the fact that there are also more
 species in some areas with less precipitation or energy. Therefore, glires
 are likely to persist in areas with characteristics of high habitat
 heterogeneity and stable climate.
description: Through the collection and arrangement of
 literature and books, a total of 21,089 effective distribution points of
 237 species of 2 orders, 14 families and 84 genera of glires with
 geographic distribution information were recorded. There are 67 endemic
 and 170 non-endemic species. Based on the species distribution data, the
 distribution ranges of 237 species were mapped. we divided the Chinese
 territory into grid cell operating units of 80 × 80
 km<sup>2</sup> to eliminate the influence of area on species
 distribution patterns. Finally, the distribution map of 237 species was
 superimposed on the grid map, and the number of species appearing in a
 single grid cell was counted to obtain the species richness distribution
 map. The number of species in each grid cell represents the species
 richness. The data represented here is the species richness of each grid
 cell including the longitude and latitude of a grid. Numerical One (1)
 denotes the presence of species while zero (0) is the absence of species
 in the grid.