Aquatic Amphibian Irreplaceability - ACE [ds2754]

For more information, see the Aquatic Rarity-weighted Richness Factsheet at https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=150854. The aquatic irreplaceability summary depicts the areas of highest irreplaceability across the state. To achieve this, the data was normalized by taxonomic group (see Data Sources and Models Used, below). The aquatic irreplaceability by taxonomic group layers give a statewide overview of irreplaceability for each individual taxonomic group, showing irreplaceability weights (RWI values) for aquatic amphibians, fish, and aquatic reptiles, and counts of rare endemic aquatic amphibians and reptiles per watershed. The California Department of Fish and Wildlife’s (CDFW) Areas of Conservation Emphasis (ACE) is a compilation and analysis of the best-available statewide spatial information in California on biodiversity, rarity and endemism, harvested species, significant habitats, connectivity and wildlife movement, climate vulnerability, climate refugia, and other relevant data (e.g., other conservation priorities such as those identified in the State Wildlife Action Plan (SWAP), stressors, land ownership). ACE addresses both terrestrial and aquatic data. The ACE model combines and analyzes terrestrial information in a 2.5 square mile hexagon grid and aquatic information at the HUC12 watershed level across the state to produce a series of maps for use in non-regulatory evaluation of conservation priorities in California. The model addresses as many of CDFWs statewide conservation and recreational mandates as feasible using high quality data sources. High value areas statewide and in each USDA Ecoregion were identified. The ACE maps and data can be viewed in the ACE online map viewer, or downloaded for use in ArcGIS. For more detailed information see https://www.wildlife.ca.gov/Data/Analysis/ACE and https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=24326.