Department of Fish and Game Web Maintenance July 12-13

Wildlife Habitats — California Wildlife Habitat Relationships System

About the CWHR Habitat Classification Scheme

[woodland]

The CWHR habitat classification scheme has been developed to support the CWHR System, a wildlife information system and predictive model for California's regularly-occurring birds, mammals, reptiles and amphibians. When first published in 1988, the classification scheme had 53 habitats.  These habitats -- except the non-vegetated Barren habitat -- are described in detail in the CWHR publication entitled:

A Guide to Wildlife Habitats of California. 1988.
Edited by Kenneth E. Mayer and William F. Laudenslayer, Jr.
State of California, Resources Agency,
Department of Fish and Game
Sacramento, CA. 166 pp.

 

Link to order form.
Now online with updates -- see below!

At present, there are 59 wildlife habitats in the CWHR System27 tree, 12 shrub, 6 herbaceous, 4 aquatic, 8 agricultural, 1 developed, and 1 non-vegetated.  Please note: The 59 habitats described below were designed for use with a predictive model for terrestrial vertebrate wildlife species. They do not represent a comprehensive classification scheme for the conservation and mapping of California's terrestrial vegetation* or its marine and estuarine habitats**.

Stages are defined for virtually all habitats.  A stage is a combination of size and cover class for tree-dominated habitats, age and cover class for shrub habitats, height and cover class for herb habitats, and depth and substrate for aquatic habitats.  A field sampling protocol is well-established for determining stages in all vegetated habitats.  Special habitat elements are also defined. They include live and decadent vegetation elements such as snags, physical elements such as banks and burrows, aquatic elements, vegetative and animal diet elements and human-made elements.

The predictive model for each species has expert-applied suitability ratings for three life-requisites - breeding, cover and feeding.   For each species, each habitat stage is rated as high, medium, low or unsuitable for each of these life requirements.  Each special habitat element is also assessed as essential, secondarily essential, preferred or not rated for the species.

 

* Notes on Classification and Mapping of Terrestrial Vegetation in California

Information on classification and mapping of terrestrial vegetation is available from the Vegetation Classification and Mapping Program (VegCAMP), Biogeographic Data Branch, California Department of Fish and Game at http://www.dfg.ca.gov/biogeodata/vegcamp/.

Field sampling for CWHR habitat stages has been incorporated into the California Native Plant Society (CNPS) Rapid Assessment Protocol, to increase the utility of the resulting vegetation maps for wildlife modeling and conservation.  Information and links to field forms are available at http://www.cnps.org/cnps/vegetation/protocol.php.

Crosswalks to the CWHR habitat classification scheme are included in all of California's major vegetation and land cover mapping efforts.  Cooperation through a Vegetation MOU (Memorandum of Understanding) signed by member organizations of the California Biodiversity Council is ongoing.

 

** Notes on Classification of Marine and Estuarine Habitats in California

A classification scheme for the conservation and management of marine and estuarine habitats was developed in cooperation with the CWHR Program in 2002.  It includes descriptions for 22 marine and 19 estuarine habitats.  At present, it does not include suitability ratings to habitat stages or special habitat elements for the terrestrial amphibians, reptiles, birds and mammals currently in the CWHR System.

The new classification includes crosswalks to other important, recent classifications regarding coastal waters. Included are crosswalks to Wetlands of the Central and Southern California Coast and Coastal Watersheds; a methodology for their classification and description (Ferren et al., 1996), Baylands Ecosystem Habitat Goals: a report of habitat recommendations (U.S. Environmental Protection Agency, 1999), A classification scheme for deep sea floor habitats (Greene et al., 1999), and Wildlife-habitat relationships in Oregon and Washington (Johnson and O'Neil, 2001).  Also included are crosswalks to a national scheme for marine and estuarine ecosystems and habitat classification published by the National Oceanic and Atmospheric Administration (NOAA) in 2002 and a classification for habitats of the Channel Islands drafted in 2000 by the Channel Island National Marine Sanctuary (CINMS).  (See link below.)

Revision to Marine and Estuarine Habitats of the California Wildlife Habitat Relationships System (2002)

 


 A Guide to Wildlife Habitats of California. 1988. 

 Updates
Contributing Authors, Acknowledgements, and Preface  (950 kb)
 
Introduction and Scope  (2,594 kb)

    How to Use the Guide

    How to Classify Habitats

    Special Habitat Elements

    Available Habitat Stages

Revised Classification Rules (2005)
Wooded Habitat Sampling Datasheet
Analysis of Wooded Habitat Sampling Data
Non-Wooded Habitat Sampling Datasheet
Analysis of Non-Wooded Habitat Sampling Data
Habitat Element Checklist
Available Habitat Stages for Agricultural Habitats
Definition of Added Human Element- Mine
Crosswalk Between WHR and California Vegetation Classifications  (2,960 kb)
CWHR Crosswalked with CNPS Vegetation Classification (2005)
CWHR Crosswalked with CalVeg Classification (2005)
UNESCO Formations Within CWHR (1998)
CWHR Crosswalked with DWR Land Use Types (2008)
Literature Cited  (1,289 kb)
Plants and Animals Referenced in Text  (622 kb)
 

 


HABITAT

PRIMARY SPECIES REFERENCED IN TEXT
1988 Text Account Range Map Photo

 UPDATES
  Tree Dominated Habitats Back to Top of Page
Subalpine Conifer (SCN) Engelmann Spruce, Subalpine Fir, Mountain Hemlock
Subalpine Conifer Description Subalpine Conifer Map Subalpine Conifer Photo

 
Red Fir (RFR) Red Fir, White Fir, Lodgepole Pine
Red Fir Description Red Fir Map Red Fir Photo

 
Lodgepole Pine (LPN) Lodgepole Pine, Aspen, Mountain Hemlock
Lodgepole Pine Description Lodgepole Pine Map Lodgepole Pine Photo

 
Sierran Mixed Conifer (SMC) Douglas Fir, Ponderosa Pine, White Fir
Sierran Mixed Conifer Description Sierran Mixed Conifer Map Sierran Mixed Conifer Photo
updated description of range
White Fir (WFR) White Fir, Douglas Fir, Sugar Pine
White Fir Description White Fir Map White Fir Photo
corrected range map
Klamath Mixed Conifer (KMC) White Fir, Douglas-Fir, Ponderosa Pine
Klamath Mixed Conifer Description Klamath Mixed Conifer Map Klamath Mixed Conifer Photo
updated description
Douglas Fir (DFR) Douglas Fir, Tanoak, Ponderosa Pine
Douglas Fir Description Douglas Fir Map Douglas Fir Photo

 
Jeffrey Pine (JPN) Jeffrey Pine, Ponderosa Pine, Sugar Pine
Jeffrey Pine Description Jeffrey Pine Map Jeffrey Pine Photo

 
Ponderosa Pine (PPN) Ponderosa Pine, Jeffrey Pine, Douglas Fir
Ponderosa Pine Description Ponderosa Pine Map Ponderosa Pine Photo

 
Eastside Pine (EPN) Ponderosa Pine, Jeffrey Pine, White Fir
Eastside Pine Description Eastside Pine Map Eastside Pine Photo

 
Redwood (RDW) Redwood, Grand Fir, Sitka Spruce
Redwood Description Redwood Map Redwood Photo

 
Pinyon-Juniper (PJN) Pinyon Species, Juniper Species, Mountain Mahogany Species
Pinyon-Juniper Description Pinyon-Juniper Map Pinyon-Juniper Photo

 
Juniper (JUN) Juniper Species, White Fir, Jeffrey Pine
Juniper Description Juniper Map Juniper Photo

 
Aspen (ASP) Aspen, Willows, Alders
Aspen Description Aspen Map Aspen Photo

 
Closed-Cone Pine-Cypress (CPC) Sargent Cypress, Monterey Cypress, Monterey Pine
Closed Cone Pine-Cypress Description Closed Cone Pine-Cypress Map Closed Cone Pine-Cypress Photo

 
Montane Hardwood-Conifer (MHC) Ponderosa Pine, Incense Cedar, California Black Oak
Montane Hardwood-Conifer Description Montane Hardwood-Conifer Map Montane Hardwood-Conifer Photo

 
Montane Hardwood (MHW) Canyon Live Oak, California Black Oak, Oregon White Oak
Montane Hardwood Description Montane Hardwood Map Montane Hardwood Photo

 
Blue Oak Woodland (BOW) Blue Oak, Interior Live Oak, California Buckeye
Blue Oak Woodland Description Blue Oak Woodland Map Blue Oak Woodland Photo

 
Valley Oak Woodland (VOW) Valley Oak, California Walnut, California Sycamore
Valley Oak Woodland Description Valley Oak Woodland Map Valley Oak Woodland Photo

 
Coastal Oak Woodland (COW) Coast Live Oak, Engelmann Oak, Island Oak
Coastal Oak Woodland Description Coastal Oak Woodland Map Coastal Oak Woodland Photo
updated description of dominants
Blue Oak-Foothill Pine (BOP) Foothill Pine, Blue Oak, Interior Live Oak
Blue Oak-Foothill Pine Description Blue Oak-Foothill Pine Map Blue Oak-Foothill Pine Photo

 
Eucalyptus (EUC) Blue Gum, Red Gum
Eucalyptus Description Eucalyptus Map Eucalyptus Photo

 
Montane Riparian (MRI) Black Cottonwood, Bigleaf Maple, White Alder
Montane Riparian Description Montane Riparian Map Montane Riparian Photo

 
Valley Foothill Riparian (VRI) Cottonwood, Sycamore, Valley Oak
Valley Foothill Riparian Description Valley Foothill Riparian Map Valley Foothill Riparian Photo

 
Desert Riparian (DRI) Tamarisk, Mesquite, Fremont Cottonwood
Desert Riparian Description Desert Riparian Map Desert Riparian Photo

 
Palm Oasis (POS) Fan Palm, Velvet Ash, California Sycamore
Palm Oasis Description Palm Oasis Map Palm Oasis Photo

 
Joshua Tree (JST) Joshua Tree, Juniper Species, Mojave Yucca
Joshua Tree Description Joshua Tree Map Joshua Tree Photo

 
  Shrub Dominated Habitats Back to Top of Page
Alpine Dwarf-Shrub (ADS) Oceanspray, Greene Goldenweed, Mountain Heather
Alpine Dwarf-Shrub Description Alpine Dwarf-Shrub Map Alpine Dwarf-Shrub Photo

 
Low Sage (LSG) Low Sagebrush, Black Sagebrush, Rabbitbrush Species
Low Sage Description Low Sage Map Low Sage Photo

 
Bitterbrush (BBR) Bitterbrush Species, Big Sagebrush, Rubber Rabbitbrush
Bitterbrush Description Bitterbrush Map Bitterbrush Photo

 
Sagebrush (SGB) Sagebrush Species, Rabbitbrush Species, Horsebrush
Sagebrush Description Sagebrush Map Sagebrush Photo

 
Montane Chaparral (MCP) Ceanothus Species, Manzanita Species, Bitter Cherry
Montane Chaparral Description Montane Chaparral Map Montane Chaparral Photo

 
Mixed Chaparral (MCH) Scrub Oak, Ceanothus Species, Manzanita Species
Mixed Chaparral Description Mixed Chaparral Map Mixed Chaparral Photo

 
Chamise-Redshank Chaparral (CRC) Chamise, Redshank, Ceanothus Species
Chamise-Redshank Chaparral Description Chamise-Redshank Chaparral Map Chamise-Redshank Chaparral Photo

 
Coastal Scrub (CSC) Coyotebush, California Buckwheat, Sage Species
Coastal Scrub Description Coastal Scrub Map Coastal Scrub Photo

 
Desert Succulent Shrub (DSS) Octillo, Mojave Yucca, Desert Agave
Desert Succulent Shrub Description Desert Succulent Shrub Map Desert Succulent Shrub Photo

 
Desert Wash (DSW) Paloverde Species, Desert Ironwood, Mesquite
Desert Wash Description Desert Wash Map Desert Wash Photo

 
Desert Scrub (DSC) Creosotebush, Catclaw Acacia, Desert Agave
Desert Scrub Description Desert Scrub Map Desert Scrub Photo

 
Alkali Desert Scrub (ASC) Allscale, Saltbush Species, Shadscale
Alkali Desert Scrub Description Alkali Desert Scrub Map Alkali Desert Scrub Photo

 
  Herbaceous Dominated Habitats Back to Top of Page
Annual Grassland (AGS) Wild Oats, Soft Chess, Brome Species
Annual Grassland Description Annual Grassland Map Annual Grassland Photo
updated range map and description of range
Perennial Grassland (PGS) California Oatgrass, Hairgrass, Sweet Vernalgrass
Perennial Grassland Description Perennial Grassland Map Perennial Grassland Photo
updated range map and description of range
Wet Meadow (WTM) Sedge Species, Rush Species, Tufted Hairgrass
Wet Meadow Description Wet Meadow Map Wet Meadow Photo
Fresh Emergent Wetland (FEW) Cattail, Bulrush, Redroot Nutgrass
Fresh Emergent Wetland Description Fresh Emergent Wetland Map Fresh Emergent Wetland Photo
Saline Emergent Wetland (SEW) Cordgrass, Pickleweed, Bulrush
Saline Emergent Wetland Description Saline Emergent Wetland Map Saline Emergent Wetland Photo
Pasture (PAS) Bermuda Grass, Ryegrass, Tall Fescue
Pasture Description Pasture Map Pasture Photo
  Aquatic Habitats
  (** See also "Notes Classification of Marine and Estuarine Habitats")
Back to Top of Page
Riverine (RIV) Water Moss, Algae, Duckweed
Riverine Description Riverine Map Riverine Photo
Lacustrine (LAC) Plankton, Duckweed, Water Lilies
Lacustrine Description Lacustrine Map Lacustrine Photo
Estuarine (EST) Plankton, Algae, Eel Grass
Estuarine Description Estuarine Map Estuarine Photo
Marine (MAR) Plankton, Algae, Kelp
Marine Description Marine Map Marine Photo
  Developed Habitats Back to Top of Page
Cropland (CRP) Tomatoes, Corn, Wheat
Cropland Description Cropland Map Cropland Photo

Replaced by DGR, IGR, IRH, IRF, RIC
Dryland Grain Crops (DGR) Cereal Rye, Barley, Wheat
  Text Account (1999)
Range Map (1999)
Photo
Irrigated Grain Crops (IGR) Corn, Dry Beans, Safflower
  Text Account (1999)
Range Map (1999)
Photo
Irrigated Hayfield (IRH) Alfalfa, Hay
  Text Account (1999)
Range Map (2002)
Photo
Irrigated Row and Field Crops (IRF) Tomatoes, Cotton, Lettuce
  Text Account (1999)
Range Map (1999)
Photo
Rice (RIC) Rice
  Text Account (1999)
Range Map (1999)
Photo
Orchard - Vineyard (OVN) Apples, Oranges, Grapes
Orchard - Vineyard Description Orchard - Vineyard Map Orchard - Vineyard Photo

Replaced by DOR, EOR, VIN
Deciduous Orchard (DOR) Almonds, Walnuts, Peaches
  Text Account (1999)
Range Map (1999)
Photo
Evergreen Orchard (EOR) Oranges, Avocados, Lemons
  Text Account (1999)
Range Map (1999)
Photo
Vineyard (VIN) Grapes, Kiwi Fruit, Boysenberries
  Text Account (1999)
Range Map (1999)
Photo
Urban (URB) Grass Lawns, Ornamental Trees, Hedges
Urban Description Urban Map Urban Photo
  Non-vegetated Habitats Back to Top of Page
Barren (BAR) Rock, Gravel, Soil
  Text Account (1999)
Range Map (1999)
Photo 1
Photo 2

 

Link to a list of habitats by county.