Drivers of anuran assemblage structure in a subtropical montane region

Elevation gradients provide excellent semi-experimental conditions to investigate how the spatial distribution of biodiversity is shaped by the environment. Here we investigate how temperature, productivity, and elevation are related to the diversity of anuran assemblages in a montane region of the southern Brazilian Atlantic Forest. We sampled 20 half-hectare plots between 2020 and 2021, distributed along a sharp elevation gradient. Anuran species richness and abundance decreased with increasing elevation. We show a positive relationship between ambient temperature and frog species richness and abundance, highlighting the importance of temperature in shaping assemblages along the elevation gradient. In contrast, productivity did not affect species richness and abundance, suggesting that available energy via resources does not limit local frog diversity. We further observed marked differences in the composition of anuran assemblages between low and high elevation areas, which were relat..., , , ### Description of the data and file structure

##### **KB\_data.csv**: General data collected for each sample plot.

* site: Name of each plot (20 plots in total).
* richness: Number of species observed.
* abundance: Number of individuals observed.
* npp: Mean net primary productivity (kgC/m²).
* bio1: Mean annual temperature (ºC).
* elevation: Elevation (masl).
* area: Categorical classification of plots as lowlands or highlands based on elevation.
* region: Plots were located in three different regions: Serra Furada (PAESF), Santa Bárbara (Sta. Bárbara), and Morro da Igreja (Morro).

**KB_abun_data.csv**: Species abundance data for each plot.

* site: Name of each plot (20 plots in total).
* columns 2 to 25: Abundance of each observed species.
* elevation: Elevation (masl).
* bio1: Mean annual temperature (ºC).
* npp: Mean net primary productivity (kgC/m²).
* area: Categorical classification of plots as lowlands or highlands based on elevation.
* region: Plots were located in three d...

海拔梯度为探究环境如何塑造生物多样性的空间分布提供了优质的半实验条件。本研究聚焦巴西南部大西洋森林的山地区域，探究温度、生产力与海拔如何与无尾两栖类（anuran）群落多样性相关联。研究于2020至2021年间沿陡峭海拔梯度布设了20个半公顷样地并开展采样。结果显示，随海拔升高，无尾两栖类的物种丰富度与个体多度均呈下降趋势。本研究证实环境温度与无尾两栖类物种丰富度及个体多度呈正相关关系，凸显了温度在塑造海拔梯度上的群落组成中的关键作用。与之相反，生产力并未对物种丰富度与个体多度产生显著影响，这表明通过资源传递的可利用能量并未限制当地蛙类的群落多样性。本研究进一步观测到高低海拔区域间的无尾两栖类群落组成存在显著差异，二者的关联为……

### 数据与文件结构说明

##### **KB_data.csv**：各采样样地的通用采集数据
* site：每个样地的名称（共计20个样地）
* richness：观测到的物种数量
* abundance：观测到的个体总数
* npp：平均净初级生产力（单位：kgC/m²）
* bio1：年平均气温（单位：℃）
* elevation：海拔高度（米以上海平面，masl）
* area：基于海拔高度将样地划分为低地或高地的分类变量
* region：样地所在的3个不同区域：塞拉富拉达（Serra Furada，PAESF）、圣巴巴拉（Santa Bárbara，Sta. Bárbara）以及莫罗达伊格雷哈（Morro da Igreja，Morro）

**KB_abun_data.csv**：各采样样地的物种多度数据
* site：每个样地的名称（共计20个样地）
* 第2至25列：各观测物种的个体多度
* elevation：海拔高度（米以上海平面，masl）
* bio1：年平均气温（单位：℃）
* npp：平均净初级生产力（单位：kgC/m²）
* area：基于海拔高度将样地划分为低地或高地的分类变量
* region：样地所在的3个不同……