Biodiversity Biodiversity conservation Natural resources conservation areas Endangered plants Conservation Endangered species Conservation Natural areas Rare animals Conservation Rare plants Conservation Wetlands Bent's Old Fort National Historic Site (Colo.) Biotic communities Butterflies Conservation Butterflies Management Conservation of natural resources Grassland ecology Management Horsetooth Reservoir (Colo.) Nature conservation Plant communities Environmental aspects Plant conservation Plants Rare butterflies Conservation Rare butterflies Management Rare plants Riparian ecology Riparian plants Shrubland ecology Management Vegetation classification Vegetation mapping Wetland ecology Wildlife management areas