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Ecological Integrity Assessments (EIAs)
for Washington’s Ecological Systems

For a description of EIA methodology see one of these links:

EIA Summary: what is an EIA and how it is applied (128K PDF).

Applying NatureServe's Ecological Integrity Assessment Methodology to Washington's Ecological Systems, a more comprehensive description of EIAs (397K PDF).

To view an EIA document for an individual ecological system (PDF format, 74 - 264 KB), click on the link below. The list is grouped by geographic region and then by upland or wetland.

Columbia Basin
   Upland

Columbia Basin Foothill and Canyon Dry Grassland
Columbia Basin Palouse Prairie
Columbia Basin Steppe and Grassland
Columbia Plateau Low Sagebrush Steppe
Columbia Plateau Scabland Shrubland
Inter-Mountain Basins Active and Stabilized Dunes
Inter-Mountain Basins Big Sagebrush Steppe
Inter-Mountain Basins Cliff and Canyon
Inter-Mountain Basins Greasewood Flat
Inter-Mountain Basins Montane Big Sagebrush Steppe
Inter-Mountain Basins Semi Desert Grassland
Inter-Mountain Basins Semi Desert Shrub Steppe

   Wetland

Columbia Basin Foothill Riparian Woodland and Shrubland
Columbia Plateau Vernal Pool
Inter-Mountain Basins Alkali Closed Depression
Inter-Mountain Basins Playa
Modoc Basalt Flow Vernal Pool
North American Arid Freshwater Emergent Marsh

Eastern Washington Montane
   Upland

East Cascades Mesic Montane Mixed-Conifer Forest and Woodland
East Cascades Oak-Ponderosa Pine Forest and Woodland
Northern Rocky Mountain Dry-Mesic Montane Mixed Conifer Forest
Northern Rocky Mountain Foothill Conifer Wooded Steppe
Northern Rocky Mountain Lower Montane, Foothill and Valley Grassland
Northern Rocky Mountain Mesic Montane Mixed Conifer Forest
Northern Rocky Mountain Montane-Foothill Deciduous Shrubland
Northern Rocky Mountain Ponderosa Pine Woodland and Savanna
Northern Rocky Mountain Subalpine Deciduous Shrubland
Northern Rocky Mountain Subalpine-Upper Montane Grassland
Northern Rocky Mountain Subalpine Woodland and Parkland
Northern Rocky Mountain Western Larch Woodland and Savanna
Rocky Mountain Aspen Forest and Woodland
Rocky Mountain Cliff, Canyon and Massive Bedrock
Rocky Mountain Lodgepole Pine Forest
Rocky Mountain Subalpine Dry-Mesic Spruce-Fir Forest and Woodland
Rocky Mountain Subalpine Mesic-Wet Spruce-Fir Forest and Woodland

   Wetland

Northern Rocky Mountain Lower Montane Riparian Woodland and Shrubland
Rocky Mountain Alpine-Montane Wet Meadow
Rocky Mountain Subalpine-Montane Mesic Meadow
Rocky Mountain Subalpine-Montane Riparian Shrubland
Rocky Mountain Subalpine-Montane Riparian Woodland

Western Washington
   Upland

North Pacific Alpine and Subalpine Dry Grassland
North Pacific Broadleaf Landslide Forest and Shrubland
North Pacific Dry Douglas-fir Forest and Woodland
North Pacific Dry-Mesic Silver Fir-Western Hemlock-Douglas-fir Forest
North Pacific Herbaceous Bald and Bluff
North Pacific Hypermaritime Shrub and Herbaceous Headland
North Pacific Hypermaritime Sitka Spruce Forest
North Pacific Hypermaritime Western Redcedar-Western Hemlock Forest
North Pacific Maritime Coastal Sand Dune and Strand
North Pacific Maritime Dry-Mesic Douglas-fir-Western Hemlock Forest
North Pacific Maritime Mesic-Wet Douglas-fir-Western Hemlock Forest
North Pacific Montane Massive Bedrock, Cliff and Talus
North Pacific Montane Shrubland
North Pacific Mountain Hemlock Forest
North Pacific Oak Woodland
Willamette Valley Upland Prairie and Savanna

   Wetland

North Pacific Bog and Fen
North Pacific Coastal Interdunal Wetland
North Pacific Hardwood-Conifer Swamp
North Pacific Intertidal Freshwater Wetland
North Pacific Lowland Riparian Forest and Shrubland
North Pacific Montane Riparian Woodland and Shrubland
North Pacific Shrub Swamp
Temperate Pacific Freshwater Emergent Marsh
Temperate Pacific Subalpine-Montane Wet Meadow
Temperate Pacific Tidal Salt and Brackish Marsh
Willamette Valley Wet Prairie


Washington Natural Heritage Program - www.dnr.wa.gov/ResearchScience/Topics/NaturalHeritage/Pages/amp_nh.aspx
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Washington Dept. of Natural Resources, PO Box 47014, Olympia, WA 98504-7014