Fish data

The file “Fish data” contains 3 Excel spreadsheets, i.e. “Raw data,” “Community data,” and “Species data.” The Raw data spreadsheet shows the abundance, measured as number of individuals, and the abundance rank for all species (BioDataTaxonName) across 761 fish samples, listed by their sample identification. The fish samples were collected from 399 distinct stream localities, listed by their station identification. The Community data spreadsheet contains relevant information for the fish samples, including latitude, longitude, date of collection, species richness, evenness, total abundance (number of individuals), statistics of the Poisson lognormal fit to the sample species abundance distribution (parameters mu and sigma, gof (goodness of fit), and p (proportion of species revealed by the sample)), statistics of the square root fit to the sample rank-abundance distribution (intercept a0, slope a, and their standard errors and 95% confidence intervals), ln Tolerant:Intolerant ratio, and abundance and richness of the three fish tolerance groups (tolerant, intolerant, and moderate). Environmental data were available for a subset of 732 samples. The Species data spreadsheet lists the 460 fish species (BioDataTaxonName) encountered in this study with tolerance group designation whenever known and occurrence across 1005 stream localities.

本数据集文件"鱼类数据"包含3张Excel工作表，分别为"原始数据"、"群落数据"和"物种数据"。原始数据工作表展示了761个鱼类样本中所有物种（BioDataTaxonName）的个体数丰度及丰度排序，样本按采样编号进行罗列。这些鱼类样本采自399个独立的溪流点位，点位按监测站编号进行标注。群落数据工作表包含鱼类样本的相关信息，包括纬度、经度、采样日期、物种丰富度、均匀度、总个体丰度，以及样本物种丰度分布的泊松对数正态（Poisson lognormal）拟合统计量（参数μ和σ、拟合优度gof，以及样本揭示的物种占比p）；还包含样本秩-丰度分布的平方根拟合统计量（截距a0、斜率a及其标准误与95%置信区间）、耐污类群与不耐污类群比值的自然对数，以及3个鱼类耐污类群（耐污类、不耐污类和中度耐污类）的丰度与丰富度。其中732个样本配有环境数据。物种数据工作表列出了本研究中记录的460种鱼类（BioDataTaxonName），标注了已知的耐污类群归属，以及这些物种在1005个溪流点位中的出现情况。