SDE Feature Class
Tags
terrestrial, biodiversity, native, richness, rare, rarity, endemic, sensitive habitat, ACE, riparian, wetland, rare natural community, game, bird, reptile, amphibian, mammal, plant
Terrestrial Connectivity, Areas of Conservation Emphasis (ACE), version 3.2.1. Last updated 03/13/2024. The Terrestrial Connectivity dataset is one of the four key components of the California Department of Fish and Wildlifes (CDFW) Areas of Conservation Emphasis (ACE) suite of terrestrial conservation information along with terrestrial Biodiversity, Significant Habitats, and Climate Resilience. The Terrestrial Connectivity dataset summarizes information on terrestrial connectivity by ACE hexagon including the presence of mapped corridors or linkages and the juxtaposition to large, contiguous, natural areas. This dataset was developed to support conservation planning efforts by allowing user to spatially evaluate the relative contribution of an area to terrestrial connectivity based on the results of statewide, regional, and other connectivity analyses.
For more information, see the Terrestrial Connectivity Factsheet at https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=150835 .
The California Department of Fish and Wildlifes (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 .
California Terrestrial Connectivity update, March 13, 2024: 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) Least Cost Corridors (top 10%) Modoc CBI [ds3133] Connectivity Cores Modoc CBI [ds3134] Ungulate migration corridors (CDFW): Elk Migration Corridors - West Goose Lake - 1999-2002, 2018-2020 [ds2901] Elk Migration Corridors - East Shasta Valley - 1999-2001, 2016-2020 [ds2903] Elk Migration Corridors - Egg Lake - 2001-2002, 2017-2020 [ds2908] Mule Deer Migration Corridors - Upper San Joaquin River Watershed - 2013-2016 [ds2878] Mule Deer Migration Corridors - Carson River - 2012-2019 [ds2888] Mule Deer Migration Corridors - Modoc Interstate CA and OR - 1999-2001, 2017-2020 [ds2894] Mule Deer Migration Corridors - Jawbone Ridge - 2009-2015 [ds2896] Mule Deer Migration Corridors - Doyle - 2016-2019 [ds2909] Mule Deer Migration Corridors - Loyalton - 2006-2017 [ds2914] Mule Deer Migration Corridors - Verdi-Truckee - 2009-2010, 2012-2017 [ds2915] Mule Deer Migration Corridors - East Tehama - 2010-2017 [ds2931] Mule Deer Migration Corridors - Butte - 2010-2016 [ds2969] Mule Deer Migration Corridors - Blue Canyon - 2018-2020 [ds2971] Mule Deer Migration Corridors - Bucks Mountain-Mooretown - 2018-2020 [ds2972] Mule Deer Migration Corridors - Downieville-Nevada City - 2018-2020 [ds2973] Mule Deer Migration Corridors - Grizzly Flat - 2018-2021 [ds2974] Mule Deer Migration Corridors - Salt Springs - 2018-2020 [ds2975] Mule Deer Migration Corridors - Siskiyou - 2015-2020 [ds2976] Mule Deer Migration Corridors - Kern River - 2020-2021 [ds2977] Mule Deer Migration Corridors - Manache - 2020-2021 [ds2978] Mule Deer Migration Corridors - Mendocino - 2004-2013, 2017-2021 [ds3014] Pronghorn Migration Corridors - Lassen - 2014-2016 [ds2933] Pronghorn Migration Corridors - Clear Lake - 2015-2020 [ds2932] Pronghorn Migration Corridors - Likely Tables - 2014-2020 [ds2934] Pronghorn Migration Corridors - Bodie-Wassuk - 2014-2016 [ds3100]
The ACE data is subject to certain assumptions and limitations that must be considered in any use or application of the data. All ACE data layers are limited by the accuracy and scale of the input data. ACE is a compilation of the best available scientific information; however, many of these datasets are not comprehensive across the landscape, may change over time, and should be revised and improved as new data become available.
The user accepts sole responsibility for the correct interpretation and use of these data, and agrees not to misrepresent these data. CDFW makes no warranty of any kind regarding these data, express or implied. By downloading these datasets, the user understands that these data are in draft condition and subject to change at any time as new information becomes available. The user will not seek to hold the State or the Department liable under any circumstances for any damages with respect to any claim by the user or any third party on account of or arising from the use of data or maps. CDFW reserves the right to modify or replace these datasets without notification.
The ACE maps display biological and recreational values based on available data and constrained by the limitations of the data. The values may be influenced by level of survey effort in a given area. The ACE data represent broad-scale patterns across the landscape, and the value of any single hexagon should be interpreted with caution. ACE is a decision-support tool to be used in conjunction with species-specific information and local-scale conservation prioritization analyses.
The ACE maps do not replace the need for site-specific evaluation of biological resources and should not be used as the sole measure of conservation priority during planning. No statement or dataset shall by itself be considered an official response from a state agency regarding impacts to wildlife resulting from a management action subject to the California Environmental Quality Act (CEQA).
Extent
West | -124.506169 | East | -113.498451 |
North | 42.068507 | South | 32.423781 |
Maximum (zoomed in) | 1:5,000 |
Minimum (zoomed out) | 1:150,000,000 |
The ACE data is subject to certain assumptions and limitations that must be considered in any use or application of the data. All ACE data layers are limited by the accuracy and scale of the input data. ACE is a compilation of the best available scientific information; however, many of these datasets are not comprehensive across the landscape, may change over time, and should be revised and improved as new data become available.
The user accepts sole responsibility for the correct interpretation and use of these data, and agrees not to misrepresent these data. CDFW makes no warranty of any kind regarding these data, express or implied. By downloading these datasets, the user understands that these data are in draft condition and subject to change at any time as new information becomes available. The user will not seek to hold the State or the Department liable under any circumstances for any damages with respect to any claim by the user or any third party on account of or arising from the use of data or maps. CDFW reserves the right to modify or replace these datasets without notification.
The ACE maps display biological and recreational values based on available data and constrained by the limitations of the data. The values may be influenced by level of survey effort in a given area. The ACE data represent broad-scale patterns across the landscape, and the value of any single hexagon should be interpreted with caution. ACE is a decision-support tool to be used in conjunction with species-specific information and local-scale conservation prioritization analyses.
The ACE maps do not replace the need for site-specific evaluation of biological resources and should not be used as the sole measure of conservation priority during planning. No statement or dataset shall by itself be considered an official response from a state agency regarding impacts to wildlife resulting from a management action subject to the California Environmental Quality Act (CEQA).