Data from Assessing the added value of antecedent streamflow alteration in modelling stream condition

The dataset contains long-term and short-term summaries of streamflow alteration and measures of biological condition (fish multi-metric index). Streamflow alteration metrics include the magnitude, duration, frequency, and seasonality of high and low flow streamflow. Biological condition was estimated from the National Rivers and Streams Assessment and National Water Quality Assessment fish sampling programs. Using fish samples, a fish multi-metric index was calculated and categorized into altered versus non-altered fish communities.本数据集包含径流改变的长、短期统计结果，以及生物状况的量化评估指标，该指标为鱼类多指标指数（fish multi-metric index）。径流改变的量化指标涵盖高、低流量的量级、持续时长、发生频率与季节性特征。生物状况通过全国河流与溪流评估（National Rivers and Streams Assessment）及全国水质评估（National Water Quality Assessment）的鱼类采样项目进行估算。基于鱼类采样样本，可计算得到鱼类多指标指数，并据此将鱼类群落划分为受径流改变干扰与未受干扰两类。