Climate induced change in spatial distribution of bee forage species in Southwest Western Australia

Species distribution models (SDM) for thirty key bee forage species targetted by beekeepers in Western Australia were obtained for current and a moderate emission climate scenario using the presence-only Maxent algorithm. Species occurrences are included as a Comma Separated Value (CSV) files with species name, latitude and longitude coordinates. Maxent outputs are formatted as GeoTiff files and included in folders named as respective scenario (i.e. Baseline and Future). Maxent outputs were converted to presence absence grids using maximum training sensitivity plus specificity threshold. Change in geographic distribution distribution between baseline and future was calculated for each bee forage species using QGIS. Species ranges shift maps and tablular data containing names of the study species, sample size, Maxent results (AUC and TSS), magnitude and the direction of species range shift is included as pdf file.

针对西澳大利亚蜂农所关注的三十种关键蜜蜂采食物种，本研究采用仅基于存在的Maxent算法，获得了当前和适度排放气候情景下的物种分布模型（SDM）。物种发生数据以逗号分隔值（CSV）文件的形式包含物种名称、纬度和经度坐标。Maxent算法的输出以GeoTiff文件格式呈现，并分别存放在以相应情景命名的文件夹中（例如：基线情景和未来情景）。通过最大训练敏感度加上特异性阈值，将Maxent输出转换为存在-不存在格网。使用QGIS计算了每种蜜蜂采食物种在基线情景与未来情景之间的地理分布变化。包含研究物种名称、样本量、Maxent结果（AUC和TSS）、物种分布变化幅度及方向的范围变化图和表格数据以PDF文件的形式提供。