Land Disturbance and Pygmy Rabbit Occupancy Values Associated With Oil and Gas Extraction in Southwestern Wyoming, 2012

Pygmy rabbits (Brachylagus idahoensis) are a Species of Greatest Conservation Need in Wyoming. They are designated as such because they are sagebrush obligates and entrained in the health and intactness of sagebrush steppe landscapes. Southwest Wyoming, where pygmy rabbits occur, has become an epicenter of domestic oil and gas exploration and this activity contributes to loss and fragmentation of sagebrush habitats. This tabular file that was used for analysis contains the following data/information: survey site, plot, and gas field; pygmy rabbit occupancy status; UTM coordinates associated with occupancy (dithered to protect pygmy rabbits from further disturbance); an index value indicating amount of fresh pygmy rabbit sign present on each survey plot; UTM coordinates (dithered) associated with the single greatest concentration of fresh pygmy rabbit sign on each plot; shrub and sagebrush cover values on each plot, extracted from Wyoming Sagebrush Map data (Homer, C. G., C. L. Aldridge, D. K. Meyer, and S. J. Schell. 2012. Multi-scale remote sensing sagebrush characterization with regression trees over Wyoming, USA: Laying a foundation for monitoring. International Journal of Applied Earth Observation and Geoinformation 14:233–244); area covered by each of 10 gas field infrastructure elements; vegetative cover and infrastructure all were mapped within 0.5 km and 1 km radius of each plot focal point (i.e., UTM coordinates associated with occupancy). Full description of each variable in this data set are provided in Germaine, et al. (http://dx.doi.org/10.1002/ecs2.1817).侏兔（Pygmy Rabbit，*Brachylagus idahoensis*）在美国怀俄明州被列为"保护优先级最高物种"。将其纳入该类别的原因在于，它们属于山艾专性物种，其生存完全依附于山地蒿草原（sagebrush steppe）景观的健康状态与完整性。侏兔的分布区——怀俄明州西南部，现已成为国内油气勘探的核心区域，此类活动加剧了山艾生境的丧失与破碎化。本用于分析的表格数据集包含以下数据信息：调查样点、样方与油气田；侏兔生境占据状态；与生境占据记录相关联的UTM坐标（已进行坐标扰动处理，以避免对侏兔种群造成进一步干扰）；各调查样方上新鲜侏兔活动痕迹量的指数值；各样方内新鲜侏兔活动痕迹最密集单点对应的UTM坐标（已进行坐标扰动）；从《怀俄明州山艾地图》数据中提取的各样方内灌木与山艾盖度值（Homer, C. G.、C. L. Aldridge、D. K. Meyer及S. J. Schell，2012年：《利用回归树在美国怀俄明州开展多尺度遥感山艾特征表征：构建监测基础》，《国际应用地球观测与地理信息学报》，14卷：233–244）；10项油气田基础设施要素各自的覆盖面积；植被盖度与基础设施的空间分布均在各样方焦点（即与生境占据记录关联的UTM坐标）周边0.5km与1km半径范围内完成测绘。本数据集各变量的完整说明详见Germaine等人的研究（http://dx.doi.org/10.1002/ecs2.1817）。