Gravel Bars Can Be Critical for Biodiversity Conservation: A Case Study on Scaly-sided Merganser in South China

This dataset inlcudes occurrences of Scaly-sided Merganser <em>Mergus squamatus</em> along a 40 km river section of Yuan River, in Central China, for three consecutive winters, and the landscape metrics of river gravel bars from geo-rectified fine resolution (0.6 m) aerial image data. We built habitat suitability models (Generalized Linear Models - GLMs) with the dataset to study the effects of landscape metrics and human disturbance on Scaly-sided Merganser presence probability.

本数据集涵盖中国中部沅江40公里河段连续三个冬季的中华秋沙鸭（Scaly-sided Merganser，学名：Mergus squamatus）的出现记录，以及基于地理校正的0.6米高分辨率航空影像数据提取的河流砾石滩景观指数。我们使用该数据集构建了生境适宜性模型——广义线性模型（Generalized Linear Models，缩写GLMs），以探究景观指数与人为干扰对中华秋沙鸭出现概率的影响。