EnviroAtlas - Native Freshwater Aquatic Biodiversity by 12-digit HUC for the Conterminous United States
This EnviroAtlas dataset describes the native freshwater aquatic biodiversity by 12-digit HUC (subwatershed) for the conterminous United States. It includes amphibians, fish, mollusks, decapods, and turtles. The metrics are: total species richness; count of threatened and endangered species; a rarity index; and a …