Climate Shield Bull Trout (0% Brook Trout), 2040 (Feature Layer)

This feature class represents the mid-century (2030-2059) scenario for bull trout, derived from the Climate Shield fish distribution models. These models provide stream-specific probabilistic predictions about the occurrence of juvenile bull trout and cutthroat trout in association with three different scenarios for climate change and brook trout invasions. These datasets indicate all potential cold-water habitats less than 11 degrees Celsius. The attribute fields BT_0BRK - BT_100BRK indicate the probabilities of bull trout occurrence within a cold-water habitat based on the prevalence of brook trout at 0%, 25%, 50%, 75%, or 100% of the sites within a habitat. The probabilities were predicted using the Climate Shield native trout models developed from known species occurrence in greater than 500 cold-water streams. The stream centerlines were based on the National Hydrography Dataset (NHD) but were modified for purposes of modeling and cross-walking to other datasets.This record was taken from the USDA Enterprise Data Inventory that feeds into the https://data.gov catalog. Data for this record includes the following resources: ISO-19139 metadata ArcGIS Hub Dataset ArcGIS GeoService CSV Shapefile GeoJSON KML For complete information, please visit https://data.gov.

本特征类表示了中世纪（2030-2059年）阶段的美洲鳟鱼情景，该情景基于气候盾鱼类分布模型构建。这些模型针对特定溪流提供了关于幼年美洲鳟鱼和虹鳟鱼出现的概率预测，预测场景包括气候变化和溪红鱼入侵的三个不同情景。该数据集标示了所有潜在的温度低于11摄氏度的冷水栖息地。属性字段BT_0BRK至BT_100BRK表示了在冷水栖息地中，基于栖息地内溪红鱼分布频率（0%、25%、50%、75%或100%）的美洲鳟鱼出现的概率。这些概率是通过Climate Shield原生鳟鱼模型预测的，该模型基于超过500条冷水溪流中已知物种的出现情况开发而成。溪流中心线基于国家水文数据集（NHD），但为了建模和与其他数据集的映射，进行了相应的修改。本记录来源于美国农业部企业数据目录，该目录输入至https://data.gov目录。本记录的数据资源包括以下内容：ISO-19139元数据、ArcGIS Hub数据集、ArcGIS GeoService、CSV、Shapefile、GeoJSON。如需完整信息，请访问https://data.gov。