Data for assessing relation among niche component in aquatic vertebrates species

This archive contains two datasets used to investigate species coexistence and trophic ecology, submitted in support of research.<b>Dataset 1: bd_coexistence.xlsx</b> contains data on species coexistence, including niche overlap indices and species traits across different niche dimensions. Key variables include species identification, niche overlap values, population width, and various niche metrics (IS, WIC, BIC, TNW) along with their corresponding indices. Taxonomic information (Family, Order, Class) is also included.<b>Dataset 2: bd_isotopes_sp.xlsx</b> provides stable carbon (¹³C) and nitrogen (¹⁵N) isotope ratios from various species, along with associated ecological and biological information. Data includes a variety of aquatic vertebrate species from different families and orders, with isotope measurements taken across different seasons and locations. Trophic niche metrics such as total niche width (TNW), within-individual component (WIC), between-individual component (BIC), and the ratio of WIC to TNW are included, as well as an individual specialisation metric (EI).

本归档文件包含两份用于探究物种共存与营养生态学的数据集，已提交以支撑相关研究。数据集1：bd_coexistence.xlsx 收录物种共存相关数据，涵盖不同生态位维度下的生态位重叠指数与物种性状信息。核心变量包括物种标识、生态位重叠值、种群宽度，以及各类生态位指标（IS、WIC、BIC、TNW）及其对应指数；同时包含分类学信息，即科（Family）、目（Order）、纲（Class）。数据集2：bd_isotopes_sp.xlsx 提供不同物种的稳定碳（¹³C）与氮（¹⁵N）同位素比值数据，以及相关生态学与生物学信息。数据涵盖多个科、目的水生脊椎动物类群，同位素测定覆盖不同季节与采样地点。该数据集同时收录营养生态位指标，包括总生态位宽度（TNW）、个体内组分（WIC）、个体间组分（BIC）以及WIC与TNW的比值，此外还包含个体特化度指标（EI）。