Bighorn_Sheep_Seasonal_Range

This data set represents the 2025 bighorn sheep seasonal range boundaries for Wyoming. Seasonal range delineations depict lands that are important in each season for certain biological processes within a herd unit. Seasonal range boundaries are based on long-term observation data, specific research projects, and professional judgement. Ranges are digitized at a scale of 1:100,000 using USGS 1:100,000 DRGs as a backdrop for heads up digitizing, and are revised as needed by the Wyoming Game and Fish Department. Current seasonal range definitions are based on a 1990 document drafted by the Wyoming Chapter of The Wildlife Society in cooperation with the Wyoming Game and Fish Department and federal land agencies.本数据集涵盖怀俄明州（Wyoming）2025年大角羊（bighorn sheep）季节性活动范围边界数据。季节性活动范围划定结果用于表征各季节内牧群单元开展特定生物活动所需的重要栖息区域。该边界的划定依托长期观测数据、专项研究项目及专业研判形成。活动范围以美国地质调查局（United States Geological Survey, USGS）1:10万比例尺数字栅格图（Digital Raster Graphics, DRGs）为底图，通过目视数字化方式按1:10万比例尺完成矢量化处理，并由怀俄明州鱼类与野生动物管理局（Wyoming Game and Fish Department）根据实际需求进行更新修订。当前采用的季节性活动范围界定标准，基于1990年由美国野生动物学会（The Wildlife Society）怀俄明分会联合怀俄明州鱼类与野生动物管理局及联邦土地管理机构共同起草的文件制定。