Road mortality risk of a protected felid across fragmented and heterogeneous landscapes in Central Europe: collision risk map and R code

Material related to the manuscript 'Road mortality risk of a protected felid across fragmented and heterogeneous landscapes in Central Europe' (Bastianelli et al., 2025) published in the Journal of Environmental Management: https://www.sciencedirect.com/science/article/pii/S0301479725041283 It contains: - R code used for the data preparation, analysis, and display of results; - Predicted probability of wildcat-vehicle collision occurrence on the complementary log-log scale ranging between 0 and 1, in each 100 x 100 m pixel of the raster grid covering the road network in Germany. - Multivariate environmental similarity surface (MESS) extrapolation uncertainty map, quantifying the degree of extrapolation to novel environments (i.e. extrapolation required for predictions in areas not included in the training data). Pixels with negative values (MESS < 0) represent environments that differ more strongly from those in the training data and might result in unreliable predictions. Wildcat is a protected felid (Bern Convention and the EU Habitats Directive), and raw data of wildcat-vehicle collision locations cannot be shared.本数据集关联发表于《Journal of Environmental Management》（环境管理期刊）的论文《中欧破碎化异质景观中受保护猫科动物的道路致死风险》（*Road mortality risk of a protected felid across fragmented and heterogeneous landscapes in Central Europe*，Bastianelli等，2025），论文链接：https://www.sciencedirect.com/science/article/pii/S0301479725041283 本数据集包含以下内容： - 用于数据预处理、分析及结果可视化的R代码； - 覆盖德国道路网络的栅格网格（raster grid）中每一100×100米像素对应的野猫-车辆碰撞发生概率预测值，该值以互补双对数尺度（complementary log-log scale）计算，取值范围为0至1； - 多元环境相似性表面（Multivariate environmental similarity surface, MESS）外推不确定性图，用于量化模型向全新环境的外推程度（即对训练数据未覆盖区域进行预测时所需的外推程度）。栅格像素值为负（MESS < 0）时，代表该区域环境与训练数据的环境差异较大，由此得到的预测结果可能不可靠。 欧洲野猫（wildcat）作为受保护的猫科动物（felid），受《伯尔尼公约》与欧盟《栖息地指令》保护，因此无法公开其车辆碰撞位置的原始数据。