Climate Shield Cutthroat Trout (50% Brook Trout), 1980 (Feature Layer)

This feature class represents the historical (1970-1999) scenario for cutthroat 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 CT_0BRK - CT_100BRK indicate the probabilities of cutthroat 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.

该特征类代表的是1970年至1999年间的刀鳃鳟鱼历史情景，该情景数据源自气候盾鱼类分布模型。这些模型针对特定河流，提供了关于幼年大鳟鱼和刀鳃鳟鱼出现的概率预测，预测情景包括气候变化和溪鳟鱼入侵的三种不同情况。这些数据集标示了所有潜在的低于11摄氏度的冷水栖息地。属性字段CT_0BRK至CT_100BRK表示刀鳃鳟鱼在冷水栖息地出现的概率，该概率基于栖息地内溪鳟鱼分布的比例，分别为0%、25%、50%、75%或100%。这些概率是通过Climate Shield本地鳟鱼模型预测的，该模型基于在超过500条冷水溪流中已知的物种出现情况进行开发。河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修改。该记录源自美国农业部企业数据目录，并输入至https://data.gov目录。该记录的数据包括以下资源：ISO-19139元数据、ArcGIS Hub数据集、ArcGIS GeoService、CSV文件、Shapefile、GeoJSON和KML。欲获取完整信息，请访问https://data.gov。