Service Description: Rare Bird Richness, Areas of Conservation Emphasis (ACE), version 3.0.
Rare species richness is a measure of the diversity of rare species in the landscape, and is one measurement used to describe the distribution of overall species biodiversity in California for the California Department of Fish and Wildlife’s (CDFW) Areas of Conservation Emphasis Project (ACE). Other measures of terrestrial species biodiversity included in the ACE terrestrial biodiversity summary are native species richness and terrestrial endemism. Here, rare species richness represents a count of the total number of rare terrestrial species potentially present in each hexagon based on documented species occurrence information. The data can be used to view patterns of species rarity, and to identify areas of high rarity richness across the state and in each ecoregion. Users can view a list of species that contribute to the richness counts for each hexagon.
The rare species richness summary depicts relative rare species diversity within each ecoregion across the state, so that areas of highest diversity within each ecoregion are highlighted. To achieve this, the data in the summary layer was normalized by taxonomic group and by ecoregion (see Data Sources and Models Used, below). The rare species richness by taxonomic group layers give a statewide overview of rarity for each individual taxonomic group, showing counts of species per hexagon for amphibians, birds, mammals, plants, and reptiles.
Service ItemId: 8f5f585d7d56426a956d95f22c2e8ad7
Has Versioned Data: false
Max Record Count: 2000
Supported query Formats: JSON
Supports applyEdits with GlobalIds: False
Supports Shared Templates: False
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Layers:
Description: For more information, see the Rare Species Richness Factsheet at https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=150814.
The user can view a list of species potentially present in each hexagon in the ACE online map viewer https://apps.wildlife.ca.gov/ace/. Note that the names of some rare species, such as those at risk of over-collection, have been suppressed from the list of species names per hexagon, but are still included in the species counts.
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.
ACE Areas of Conservation Emphasis; Program Lead; California Department of Fish and Wildlife (CDFW); Biogeographic Data Branch; ; ; ; ACE@wildlife.ca.gov;
Spatial Reference: 102100 (3857)
Initial Extent:
XMin: -14354384.5334925
YMin: 3767214.03304
XMax: -12199876.2770075
YMax: 5228815.11156
Spatial Reference: 102100 (3857)
Full Extent:
XMin: -13849232.2818
YMin: 3833650.4457
XMax: -12705028.5287
YMax: 5162378.6989
Spatial Reference: 102100 (3857)
Units: esriMeters
Child Resources:
Info
Supported Operations:
Query
ConvertFormat
Get Estimates