U.S. Fish & Wildlife ServiceMore Details Stream SR was estimated by summing the total number of mussel species predicted within each stream. Stream-level weighted endemism was calculated by weighting each species' presence in the stream by the inverse of the total number of streams it was predicted to occupy, then summing across all species predicted present within the stream. This biodiversity metric therefore provides context about the range extent of the species predicted within the stream (e.g., higher values indicate either high richness or the presence of several range-restricted species). Stream-level corrected weighted endemism was calculated by dividing weighted endemism by the total number of species predicted present within the stream. This metric therefore corrects for an abundance of species predicted present within a stream (meaning, larger corrected weighted endemism values indicate the presence of more range-restricted species). Endemism metrics were rescaled to fall between zero and one to increase metric interpretability. These rescaled values were used in ensuing analyses. Stream-level SR and endemism metrics within each HUC region were strongly right-skewed (many smaller values and few large values). Fields of Note COMID - Stream reach ID SS_SR - Estimated species richness SS_WE - Estimated weighted endemism SS_CWE - Corrected weighted endemism Additional Resources This data, as well as data layers depicting hot/cold spots of species richness and other biodiversity metrics at HUC4, HUC6, and HUC8 spatial scales, are available for download here: https://www.sciencebase.gov/catalog/item/65d762ced34ec3e1801d7e30 .ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/26142dcd378c44e4b75884d79e6e6b06_0engU.S. Fish and Wildlife Service Open DataPublicMidwest Mussel Species Richness Estimates [United States]Web servicesUnited StatesLast Modified: 2024-04-26