Climate Shield Cutthroat Trout (50% Brook Trout), 2040 (Feature Layer)

This feature class represents the mid-century (2030-2059) 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.

本要素类代表了21世纪中叶（2030-2059年）切喉鳟（cutthroat trout）的情景数据集，源自气候护盾（Climate Shield）鱼类分布模型。此类模型可针对单条溪流，提供与三种气候变化及溪鳟（brook trout）入侵情景相关的幼龄牛鳟与切喉鳟出现概率预测。本数据集涵盖所有水温低于11℃的潜在冷水栖息地。属性字段CT_0BRK至CT_100BRK，用于表征当栖息地内0%、25%、50%、75%、100%的位点存在溪鳟侵染时，切喉鳟在该冷水栖息地内的出现概率。上述出现概率通过气候护盾（Climate Shield）本土鳟类模型预测得到，该模型基于超过500条冷水溪流中的已知物种出现记录构建。溪流中心线基于国家水文数据集（National Hydrography Dataset, NHD）构建，但为适配建模需求及与其他数据集开展跨库关联而进行了修正。