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Description: For more information, see the Terrestrial Connectivity Factsheet at https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=150835.
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/ACEand https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=24326.
California Terrestrial Connectivity update, June 30, 2019: California Department of Fish and Wildlife, Conservation Analysis Unit.
ACE 3 Working Group and ACE 3 Development Team, California Department of Fish and Wildlife. ACE 3 Connectivity Subgroup: Melanie Gogol-Prokurat, Shannon Lucas, Steve Torres, Sandra Hill, Peter Perrine, Karen Miner, Elizabeth Hubert, Stuart Itoga, and Kristi Cripe.
Statewide datasets:
Natural Landscape Blocks – California Essential Habitat Connectivity Analysis [ds621] (Spencer et al. 2010)
Essential Connectivity Areas - California Essential Habitat Connectivity Analysis [ds620] (Spencer et al. 2010)
Terrestrial Landscape Intactness (1km) - 2016 [ds2670], https://databasin.org/datasets/e3ee00e8d94a4de58082fdbc91248a65
Omniscape (TNC 2018) https://www.scienceforconservation.org/science-in-action/connectivity-roadmap)
Regional datasets:
South Coast Missing Linkages [ds419] (South Coast Wildlands 2008)
Wildlife Linkages – San Joaquin Valley [ds417] (Endangered Species Recovery Program 1996; USFWS 1998, Table 11)
Habitat Connectivity – Ventura County [ds565] (subset of South Coast Missing Linkages, ds419; South Coast Wildlands 2008)
Linkage Design for the California Desert Linkage Network [ds822] (Penrod et al. 2012)
Linkage Design for the California Bay Area Linkage Network [ds852] (Penrod et al. 2013)
Northern Sierra Nevada Foothills Wildlife Linkages [ds1005] (Krause et al. 2015)
Northern Sierra Nevada Foothills Riparian Corridors [ds1018] (Krause et al. 2015)
Core Linkages – Region 5 – Connectivity Monitoring Strategic Plan [ds2698] (SDMMP and TNC 2017, Volume 2B, Section 8)
Core Habitat Areas – Region 5 – Connectivity Monitoring Strategic Plan [ds2697] (SDMMP and TNC 2017, Volume 2B, Section 8)
Central Valley Core Reserved and Corridors [ds2693] (Huber et al, UC Davis)
Focused Planning Areas – Northwestern San Diego County [ds2770]
Orange County Reserves [ds2699] (County of Orange 1996, Section 4.4)
Mayacamas to Berryessa [ds2819]
Coyote Valley and Santa Clara Valley [ds2823]
Modoc Habitat Connectivity (Gallo et al., Conservation Biology Institute, 2019)
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