Ecosystem Domains

Ecosystem Domains Map
Click on a specific DOMAIN in the map above or the list below

Alaska, Hawaii, and Puerto Rico domains...

100 POLAR DOMAIN
     120 Tundra Division
         124 Arctic Tundra Province
         125 Bering Tundra (Northern) Province
         126 Bering Tundra (Southern) Province
       M120 Tundra Division - Mountain Provinces
         M121 Brooks Range Tundra--Polar Desert Province
         M125 Seward Peninsula Tundra--Meadow Province
         M126 Ahklun Mountains Tundra--Meadow Province
         M127 Aleutian Oceanic Meadow--Heath Province
     130 Subarctic Division
         131 Yukon Intermontane Plateaus Tayga Forest
         135 Coastal Trough Humid Tayga Province
         139 Upper Yukon Tayga Province
       M130 Subarctic Division - Mountain Provinces
         M131 Yukon Intermontane Plateaus Tayga--Meadow Province
         M135 Alaska Range Humid Tayga--Tundra--Meadow
         M139 Upper Yukon Tayga--Meadow Province
200 HUMID TEMPERATE DOMAIN
     210 Warm Continental Division
         212 Laurentian Mixed Forest Province
       M210 Warm Continental Division - Mountain Provinces
         M212 Adirondack-New England Mixed Forest--Coniferous Forest--Alpine Meadow Province
     220 Hot Continental Division
         221 Eastern Broadleaf Forest (Oceanic) Province
         222 Eastern Broadleaf Forest (Continental) Province
       M220 Hot Continental Division - Mountain Provinces
         M221 Central Appalachian Broadleaf Forest--Coniferous Forest--Meadow Province
         M222 Ozark Broadleaf Forest--Meadow Province
     230 Subtropical Division
         231 Southeastern Mixed Forest Province
         232 Outer Coastal Plain Mixed Forest Province
         234 Lower Mississippi Riverine Forest Province
       M230 Subtropical Division - Mountain Provinces
         M231 Ouachita Mixed Forest--Meadow Province
     240 Marine Division
         242 Pacific Lowland Mixed Forest Province
       M240 Marine Division - Mountain Provinces
         M242 Cascade Mixed Forest--Coniferous Forest--Alpine Meadow Province
     250 Prairie Division
         251 Prairie Parkland (Temperate) Province
         255 Prairie Parkland (Subtropical) Province
     260 Mediterranean Division
         261 California Coastal Chaparral Forest and Shrub Province
         262 California Dry Steppe Province
         263 California Coastal Steppe, Mixed Forest, and Redwood Forest Province
       M260 Mediterranean Division - Mountain Provinces
         M261 Sierran Steppe--Mixed Forest--Coniferous Forest--Alpine Meadow Province
         M262 California Coastal Range Open Woodland-Shrub-Coniferous Forest--Meadow Province
300 DRY DOMAIN
     310 Tropical/Subtropical Steppe Division
         311 Great Plains Steppe and Shrub Province
         313 Colorado Plateau Semidesert Province
         315 Southwest Plateau and Plains Dry Steppe and Shrub Province
       M310 Tropical/Subtropical Steppe Division - Mountain Provinces
         M313 Arizona-New Mexico Mountains Semidesert-Open Woodland--Coniferous Forest--Alpine Meadow Province
     320 Tropical/Subtropical Desert Division
         321 Chihuahuan Semidesert Province
         322 American Semidesert and Desert Province
     330 Temperate Steppe Division
         331 Great Plains-Palouse Dry Steppe Province
         332 Great Plains Steppe Province
       M330 Temperate Steppe Division - Mountain Provinces
         M331 Southern Rocky Mountain Steppe--OpenWoodland--Coniferous Forest--Alpine Meadow Province
         M332 Middle Rocky Mountain Steppe--Coniferous Forest--Alpine Meadow Province
         M333 Northern Rocky Mountain Forest-Steppe--Coniferous Forest--Alpine Meadow Province
         M334 Black Hills Coniferous Forest Province
     340 Temperate Desert Division
         341 Intermountain Semidesert and Desert Province
         342 Intermountain Semidesert Province
       M340 Temperate Desert Division - Mountain Provinces
         M341 Nevada-Utah Mountains Semidesert--Coniferous Forest--Alpine Meadow Province
400 HUMID TROPICAL DOMAIN
     410 Savanna Division
         411 Everglades Province
       M410 Savanna Division - Mountain Provinces
         M411 Puerto Rico Province
     420 Rainforest Division
       M420 Rainforest Division - Mountain Provinces
         M423 Hawaiian Islands Province

Appendix 1 - Regional climates, based on the Koppen system of classification (1931)

Appendix 2 - Climate diagrams of representative climate stations

Appendix 3 - Approximate area and proportionate extent of ecoregions at the province level in the United States

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Date last modified: August 21, 2008