List of ecoregions in the United States (WWF)


This is a list of terrestrial ecoregions of the 50 United States, as defined by the World Wildlife Fund:
RealmBiomeEcoregionState
NearcticTropical and subtropical coniferous forestsSierra Madre Occidental pine-oak forestsArizona
NearcticTropical and subtropical coniferous forestsSierra Madre Occidental pine-oak forestsNew Mexico
NearcticTropical and subtropical coniferous forestsSierra Madre Oriental pine-oak forestsTexas
NearcticTemperate broadleaf and mixed forestsAllegheny Highlands forestsNew Jersey
NearcticTemperate broadleaf and mixed forestsAllegheny Highlands forestsNew York
NearcticTemperate broadleaf and mixed forestsAllegheny Highlands forestsOhio
NearcticTemperate broadleaf and mixed forestsAllegheny Highlands forestsPennsylvania
NearcticTemperate broadleaf and mixed forestsAppalachian mixed mesophytic forestsAlabama
NearcticTemperate broadleaf and mixed forestsAppalachian mixed mesophytic forestsGeorgia
NearcticTemperate broadleaf and mixed forestsAppalachian mixed mesophytic forestsKentucky
NearcticTemperate broadleaf and mixed forestsAppalachian mixed mesophytic forestsMaryland
NearcticTemperate broadleaf and mixed forestsAppalachian mixed mesophytic forestsNorth Carolina
NearcticTemperate broadleaf and mixed forestsAppalachian mixed mesophytic forestsOhio
NearcticTemperate broadleaf and mixed forestsAppalachian mixed mesophytic forestsPennsylvania
NearcticTemperate broadleaf and mixed forestsAppalachian mixed mesophytic forestsTennessee
NearcticTemperate broadleaf and mixed forestsAppalachian mixed mesophytic forestsVirginia
NearcticTemperate broadleaf and mixed forestsAppalachian mixed mesophytic forestsWest Virginia
NearcticTemperate broadleaf and mixed forestsAppalachian-Blue Ridge forestsAlabama
NearcticTemperate broadleaf and mixed forestsAppalachian-Blue Ridge forestsGeorgia
NearcticTemperate broadleaf and mixed forestsAppalachian-Blue Ridge forestsMaryland
NearcticTemperate broadleaf and mixed forestsAppalachian-Blue Ridge forestsNew Jersey
NearcticTemperate broadleaf and mixed forestsAppalachian-Blue Ridge forestsNew York
NearcticTemperate broadleaf and mixed forestsAppalachian-Blue Ridge forestsNorth Carolina
NearcticTemperate broadleaf and mixed forestsAppalachian-Blue Ridge forestsPennsylvania
NearcticTemperate broadleaf and mixed forestsAppalachian-Blue Ridge forestsSouth Carolina
NearcticTemperate broadleaf and mixed forestsAppalachian-Blue Ridge forestsTennessee
NearcticTemperate broadleaf and mixed forestsAppalachian-Blue Ridge forestsVirginia
NearcticTemperate broadleaf and mixed forestsAppalachian-Blue Ridge forestsWest Virginia
NearcticTemperate broadleaf and mixed forestsCentral U.S. hardwood forestsAlabama
NearcticTemperate broadleaf and mixed forestsCentral U.S. hardwood forestsArkansas
NearcticTemperate broadleaf and mixed forestsCentral U.S. hardwood forestsIllinois
NearcticTemperate broadleaf and mixed forestsCentral U.S. hardwood forestsIndiana
NearcticTemperate broadleaf and mixed forestsCentral U.S. hardwood forestsKentucky
NearcticTemperate broadleaf and mixed forestsCentral U.S. hardwood forestsMississippi
NearcticTemperate broadleaf and mixed forestsCentral U.S. hardwood forestsMissouri
NearcticTemperate broadleaf and mixed forestsCentral U.S. hardwood forestsOhio
NearcticTemperate broadleaf and mixed forestsCentral U.S. hardwood forestsOklahoma
NearcticTemperate broadleaf and mixed forestsCentral U.S. hardwood forestsTennessee
NearcticTemperate broadleaf and mixed forestsEast Central Texas forestsTexas
NearcticTemperate broadleaf and mixed forestsEastern Great Lakes lowland forestsNew York
NearcticTemperate broadleaf and mixed forestsEastern Great Lakes lowland forestsVermont
NearcticTemperate broadleaf and mixed forestsEastern forest-boreal transitionNew York
NearcticTemperate broadleaf and mixed forestsMississippi lowland forestsArkansas
NearcticTemperate broadleaf and mixed forestsMississippi lowland forestsIllinois
NearcticTemperate broadleaf and mixed forestsMississippi lowland forestsKentucky
NearcticTemperate broadleaf and mixed forestsMississippi lowland forestsLouisiana
NearcticTemperate broadleaf and mixed forestsMississippi lowland forestsMississippi
NearcticTemperate broadleaf and mixed forestsMississippi lowland forestsMissouri
NearcticTemperate broadleaf and mixed forestsMississippi lowland forestsTennessee
NearcticTemperate broadleaf and mixed forestsNew England-Acadian forestsConnecticut
NearcticTemperate broadleaf and mixed forestsNew England-Acadian forestsMaine
NearcticTemperate broadleaf and mixed forestsNew England-Acadian forestsMassachusetts
NearcticTemperate broadleaf and mixed forestsNew England-Acadian forestsNew Hampshire
NearcticTemperate broadleaf and mixed forestsNew England-Acadian forestsNew York
NearcticTemperate broadleaf and mixed forestsNew England-Acadian forestsVermont
NearcticTemperate broadleaf and mixed forestsNortheastern coastal forestsConnecticut
NearcticTemperate broadleaf and mixed forestsNortheastern coastal forestsDelaware
NearcticTemperate broadleaf and mixed forestsNortheastern coastal forestsMaine
NearcticTemperate broadleaf and mixed forestsNortheastern coastal forestsMaryland
NearcticTemperate broadleaf and mixed forestsNortheastern coastal forestsMassachusetts
NearcticTemperate broadleaf and mixed forestsNortheastern coastal forestsNew Hampshire
NearcticTemperate broadleaf and mixed forestsNortheastern coastal forestsNew Jersey
NearcticTemperate broadleaf and mixed forestsNortheastern coastal forestsNew York
NearcticTemperate broadleaf and mixed forestsNortheastern coastal forestsPennsylvania
NearcticTemperate broadleaf and mixed forestsNortheastern coastal forestsRhode Island
NearcticTemperate broadleaf and mixed forestsNortheastern coastal forestsVermont
NearcticTemperate broadleaf and mixed forestsOzark Mountain forestsArkansas
NearcticTemperate broadleaf and mixed forestsOzark Mountain forestsOklahoma
NearcticTemperate broadleaf and mixed forestsSoutheastern mixed forestsAlabama
NearcticTemperate broadleaf and mixed forestsSoutheastern mixed forestsGeorgia
NearcticTemperate broadleaf and mixed forestsSoutheastern mixed forestsLouisiana
NearcticTemperate broadleaf and mixed forestsSoutheastern mixed forestsMaryland
NearcticTemperate broadleaf and mixed forestsSoutheastern mixed forestsMississippi
NearcticTemperate broadleaf and mixed forestsSoutheastern mixed forestsNorth Carolina
NearcticTemperate broadleaf and mixed forestsSoutheastern mixed forestsPennsylvania
NearcticTemperate broadleaf and mixed forestsSoutheastern mixed forestsSouth Carolina
NearcticTemperate broadleaf and mixed forestsSoutheastern mixed forestsTennessee
NearcticTemperate broadleaf and mixed forestsSoutheastern mixed forestsVirginia
NearcticTemperate broadleaf and mixed forestsSouthern Great Lakes forestsIndiana
NearcticTemperate broadleaf and mixed forestsSouthern Great Lakes forestsMichigan
NearcticTemperate broadleaf and mixed forestsSouthern Great Lakes forestsNew York
NearcticTemperate broadleaf and mixed forestsSouthern Great Lakes forestsOhio
NearcticTemperate broadleaf and mixed forestsSouthern Great Lakes forestsPennsylvania
NearcticTemperate broadleaf and mixed forestsUpper Midwest forest-savanna transitionIllinois
NearcticTemperate broadleaf and mixed forestsUpper Midwest forest-savanna transitionIowa
NearcticTemperate broadleaf and mixed forestsUpper Midwest forest-savanna transitionMichigan
NearcticTemperate broadleaf and mixed forestsUpper Midwest forest-savanna transitionMinnesota
NearcticTemperate broadleaf and mixed forestsUpper Midwest forest-savanna transitionWisconsin
NearcticTemperate broadleaf and mixed forestsWestern Great Lakes forestsMichigan
NearcticTemperate broadleaf and mixed forestsWestern Great Lakes forestsMinnesota
NearcticTemperate broadleaf and mixed forestsWestern Great Lakes forestsWisconsin
NearcticTemperate broadleaf and mixed forestsWillamette Valley forestsOregon
NearcticTemperate broadleaf and mixed forestsWillamette Valley forestsWashington
NearcticTemperate coniferous forestsArizona Mountains forestsArizona
NearcticTemperate coniferous forestsArizona Mountains forestsNew Mexico
NearcticTemperate coniferous forestsArizona Mountains forestsTexas
NearcticTemperate coniferous forestsAtlantic coastal pine barrensMassachusetts
NearcticTemperate coniferous forestsAtlantic coastal pine barrensNew Jersey
NearcticTemperate coniferous forestsAtlantic coastal pine barrensNew York
NearcticTemperate coniferous forestsBlue Mountains forestsIdaho
NearcticTemperate coniferous forestsBlue Mountains forestsOregon
NearcticTemperate coniferous forestsBlue Mountains forestsWashington
NearcticTemperate coniferous forestsBritish Columbia mainland coastal forestsWashington
NearcticTemperate coniferous forestsCascade Mountains leeward forestsWashington
NearcticTemperate coniferous forestsCentral Pacific coastal forestsOregon
NearcticTemperate coniferous forestsCentral Pacific coastal forestsWashington
NearcticTemperate coniferous forestsCentral and Southern Cascades forestsOregon
NearcticTemperate coniferous forestsCentral and Southern Cascades forestsWashington
NearcticTemperate coniferous forestsColorado Rockies forestsColorado
NearcticTemperate coniferous forestsColorado Rockies forestsNew Mexico
NearcticTemperate coniferous forestsColorado Rockies forestsWyoming
NearcticTemperate coniferous forestsEastern Cascades forestsCalifornia
NearcticTemperate coniferous forestsEastern Cascades forestsOregon
NearcticTemperate coniferous forestsEastern Cascades forestsWashington
NearcticTemperate coniferous forestsFlorida sand pine scrubFlorida
NearcticTemperate coniferous forestsGreat Basin montane forestsCalifornia
NearcticTemperate coniferous forestsGreat Basin montane forestsNevada
NearcticTemperate coniferous forestsGreat Basin montane forestsOregon
NearcticTemperate coniferous forestsKlamath-Siskiyou forestsCalifornia
NearcticTemperate coniferous forestsKlamath-Siskiyou forestsOregon
NearcticTemperate coniferous forestsMiddle Atlantic coastal forestsDelaware
NearcticTemperate coniferous forestsMiddle Atlantic coastal forestsGeorgia
NearcticTemperate coniferous forestsMiddle Atlantic coastal forestsMaryland
NearcticTemperate coniferous forestsMiddle Atlantic coastal forestsNorth Carolina
NearcticTemperate coniferous forestsMiddle Atlantic coastal forestsSouth Carolina
NearcticTemperate coniferous forestsMiddle Atlantic coastal forestsVirginia
NearcticTemperate coniferous forestsNorth Central Rockies forestsIdaho
NearcticTemperate coniferous forestsNorth Central Rockies forestsMontana
NearcticTemperate coniferous forestsNorth Central Rockies forestsWashington
NearcticTemperate coniferous forestsNorthern California coastal forestsCalifornia
NearcticTemperate coniferous forestsNorthern California coastal forestsOregon
NearcticTemperate coniferous forestsNorthern Pacific coastal forestsAlaska
NearcticTemperate coniferous forestsOkanogan dry forestsWashington
NearcticTemperate coniferous forestsPiney Woods forestsArkansas
NearcticTemperate coniferous forestsPiney Woods forestsLouisiana
NearcticTemperate coniferous forestsPiney Woods forestsOklahoma
NearcticTemperate coniferous forestsPiney Woods forestsTexas
NearcticTemperate coniferous forestsPuget lowland forestsWashington
NearcticTemperate coniferous forestsSierra Nevada forestsCalifornia
NearcticTemperate coniferous forestsSierra Nevada forestsNevada
NearcticTemperate coniferous forestsSouth Central Rockies forestsMontana
NearcticTemperate coniferous forestsSouth Central Rockies forestsSouth Dakota
NearcticTemperate coniferous forestsSouth Central Rockies forestsWyoming
NearcticTemperate coniferous forestsSoutheastern conifer forestsAlabama
NearcticTemperate coniferous forestsSoutheastern conifer forestsFlorida
NearcticTemperate coniferous forestsSoutheastern conifer forestsGeorgia
NearcticTemperate coniferous forestsSoutheastern conifer forestsLouisiana
NearcticTemperate coniferous forestsSoutheastern conifer forestsMississippi
NearcticTemperate coniferous forestsWasatch and Uinta montane forestsIdaho
NearcticTemperate coniferous forestsWasatch and Uinta montane forestsUtah
NearcticTemperate coniferous forestsWasatch and Uinta montane forestsWyoming
NearcticBoreal forests/taiga Alaska Peninsula montane taigaAlaska
NearcticBoreal forests/taiga Cook Inlet taigaAlaska
NearcticBoreal forests/taiga Copper Plateau taigaAlaska
NearcticBoreal forests/taiga Interior Alaska-Yukon lowland taigaAlaska
NearcticTropical and subtropical grasslands, savannas, and shrublandsWestern Gulf coastal grasslandsLouisiana
NearcticTropical and subtropical grasslands, savannas, and shrublandsWestern Gulf coastal grasslandsMississippi
NearcticTropical and subtropical grasslands, savannas, and shrublandsWestern Gulf coastal grasslandsTexas
NearcticTemperate grasslands, savannas, and shrublandsCalifornia Central Valley grasslandsCalifornia
NearcticTemperate grasslands, savannas, and shrublandsCanadian aspen forests and parklandsMinnesota
NearcticTemperate grasslands, savannas, and shrublandsCanadian aspen forests and parklandsNorth Dakota
NearcticTemperate grasslands, savannas, and shrublandsCentral and Southern mixed grasslandsKansas
NearcticTemperate grasslands, savannas, and shrublandsCentral and Southern mixed grasslandsNebraska
NearcticTemperate grasslands, savannas, and shrublandsCentral and Southern mixed grasslandsOklahoma
NearcticTemperate grasslands, savannas, and shrublandsCentral and Southern mixed grasslandsTexas
NearcticTemperate grasslands, savannas, and shrublandsCentral forest-grasslands transitionIllinois
NearcticTemperate grasslands, savannas, and shrublandsCentral forest-grasslands transitionIndiana
NearcticTemperate grasslands, savannas, and shrublandsCentral forest-grasslands transitionIowa
NearcticTemperate grasslands, savannas, and shrublandsCentral forest-grasslands transitionKansas
NearcticTemperate grasslands, savannas, and shrublandsCentral forest-grasslands transitionMissouri
NearcticTemperate grasslands, savannas, and shrublandsCentral forest-grasslands transitionOklahoma
NearcticTemperate grasslands, savannas, and shrublandsCentral forest-grasslands transitionTexas
NearcticTemperate grasslands, savannas, and shrublandsCentral forest-grasslands transitionWisconsin
NearcticTemperate grasslands, savannas, and shrublandsCentral tall grasslandsIowa
NearcticTemperate grasslands, savannas, and shrublandsCentral tall grasslandsKansas
NearcticTemperate grasslands, savannas, and shrublandsCentral tall grasslandsMinnesota
NearcticTemperate grasslands, savannas, and shrublandsCentral tall grasslandsMissouri
NearcticTemperate grasslands, savannas, and shrublandsCentral tall grasslandsNebraska
NearcticTemperate grasslands, savannas, and shrublandsCentral tall grasslandsNorth Dakota
NearcticTemperate grasslands, savannas, and shrublandsCentral tall grasslandsSouth Dakota
NearcticTemperate grasslands, savannas, and shrublandsCentral tall grasslandsWisconsin
NearcticTemperate grasslands, savannas, and shrublandsEdwards Plateau savannaTexas
NearcticTemperate grasslands, savannas, and shrublandsFlint Hills tall grasslandsKansas
NearcticTemperate grasslands, savannas, and shrublandsFlint Hills tall grasslandsOklahoma
NearcticTemperate grasslands, savannas, and shrublandsMontana Valley and Foothill grasslandsMontana
NearcticTemperate grasslands, savannas, and shrublandsNebraska Sand Hills mixed grasslandsNebraska
NearcticTemperate grasslands, savannas, and shrublandsNebraska Sand Hills mixed grasslandsSouth Dakota
NearcticTemperate grasslands, savannas, and shrublandsNorthern mixed grasslandsNebraska
NearcticTemperate grasslands, savannas, and shrublandsNorthern mixed grasslandsNorth Dakota
NearcticTemperate grasslands, savannas, and shrublandsNorthern mixed grasslandsSouth Dakota
NearcticTemperate grasslands, savannas, and shrublandsNorthern short grasslandsMontana
NearcticTemperate grasslands, savannas, and shrublandsNorthern short grasslandsNebraska
NearcticTemperate grasslands, savannas, and shrublandsNorthern short grasslandsNorth Dakota
NearcticTemperate grasslands, savannas, and shrublandsNorthern short grasslandsSouth Dakota
NearcticTemperate grasslands, savannas, and shrublandsNorthern short grasslandsWyoming
NearcticTemperate grasslands, savannas, and shrublandsNorthern tall grasslandsMinnesota
NearcticTemperate grasslands, savannas, and shrublandsNorthern tall grasslandsNorth Dakota
NearcticTemperate grasslands, savannas, and shrublandsNorthern tall grasslandsSouth Dakota
NearcticTemperate grasslands, savannas, and shrublandsPalouse grasslandsIdaho
NearcticTemperate grasslands, savannas, and shrublandsPalouse grasslandsOregon
NearcticTemperate grasslands, savannas, and shrublandsPalouse grasslandsWashington
NearcticTemperate grasslands, savannas, and shrublandsTexas blackland prairiesTexas
NearcticTemperate grasslands, savannas, and shrublandsWestern short grasslandsColorado
NearcticTemperate grasslands, savannas, and shrublandsWestern short grasslandsKansas
NearcticTemperate grasslands, savannas, and shrublandsWestern short grasslandsNebraska
NearcticTemperate grasslands, savannas, and shrublandsWestern short grasslandsNew Mexico
NearcticTemperate grasslands, savannas, and shrublandsWestern short grasslandsOklahoma
NearcticTemperate grasslands, savannas, and shrublandsWestern short grasslandsSouth Dakota
NearcticTemperate grasslands, savannas, and shrublandsWestern short grasslandsTexas
NearcticTemperate grasslands, savannas, and shrublandsWestern short grasslandsWyoming
NearcticTundraAlaska-St. Elias Range tundraAlaska
NearcticTundraAleutian Islands tundraAlaska
NearcticTundraArctic coastal tundraAlaska
NearcticTundraArctic foothills tundraAlaska
NearcticTundraBeringia lowland tundraAlaska
NearcticTundraBeringia upland tundraAlaska
NearcticTundraBrooks-British Range tundraAlaska
NearcticTundraInterior Yukon-Alaska alpine tundraAlaska
NearcticTundraOgilvie-MacKenzie alpine tundraAlaska
NearcticTundraPacific Coastal Mountain icefields and tundraAlaska
NearcticMediterranean forests, woodlands, and shrubCalifornia coastal sage and chaparralCalifornia
NearcticMediterranean forests, woodlands, and shrubCalifornia interior chaparral and woodlandsCalifornia
NearcticMediterranean forests, woodlands, and shrubCalifornia montane chaparral and woodlandsCalifornia
NearcticDeserts and xeric shrublandsChihuahuan desertArizona
NearcticDeserts and xeric shrublandsChihuahuan desertNew Mexico
NearcticDeserts and xeric shrublandsChihuahuan desertTexas
NearcticDeserts and xeric shrublandsColorado Plateau shrublandsArizona
NearcticDeserts and xeric shrublandsColorado Plateau shrublandsColorado
NearcticDeserts and xeric shrublandsColorado Plateau shrublandsNew Mexico
NearcticDeserts and xeric shrublandsColorado Plateau shrublandsUtah
NearcticDeserts and xeric shrublandsGreat Basin shrub steppeCalifornia
NearcticDeserts and xeric shrublandsGreat Basin shrub steppeIdaho
NearcticDeserts and xeric shrublandsGreat Basin shrub steppeNevada
NearcticDeserts and xeric shrublandsGreat Basin shrub steppeUtah
NearcticDeserts and xeric shrublandsMojave desertArizona
NearcticDeserts and xeric shrublandsMojave desertCalifornia
NearcticDeserts and xeric shrublandsMojave desertNevada
NearcticDeserts and xeric shrublandsMojave desertUtah
NearcticDeserts and xeric shrublandsSnake-Columbia shrub steppeCalifornia
NearcticDeserts and xeric shrublandsSnake-Columbia shrub steppeIdaho
NearcticDeserts and xeric shrublandsSnake-Columbia shrub steppeNevada
NearcticDeserts and xeric shrublandsSnake-Columbia shrub steppeOregon
NearcticDeserts and xeric shrublandsSnake-Columbia shrub steppeWashington
NearcticDeserts and xeric shrublandsSonoran desertArizona
NearcticDeserts and xeric shrublandsSonoran desertCalifornia
NearcticDeserts and xeric shrublandsTamaulipan mezquitalTexas
NearcticDeserts and xeric shrublandsWyoming Basin shrub steppeColorado
NearcticDeserts and xeric shrublandsWyoming Basin shrub steppeIdaho
NearcticDeserts and xeric shrublandsWyoming Basin shrub steppeMontana
NearcticDeserts and xeric shrublandsWyoming Basin shrub steppeUtah
NearcticDeserts and xeric shrublandsWyoming Basin shrub steppeWyoming
NeotropicalTropical and subtropical moist broadleaf forestsSouth Florida rocklandsFlorida
NeotropicalFlooded grasslands and savannasEvergladesFlorida
OceanianTropical and subtropical moist broadleaf forestsHawaiian tropical rainforestsHawaii
OceanianTropical and subtropical dry broadleaf forestsHawaiian tropical dry forestsHawaii
OceanianTropical and subtropical grasslands, savannas, and shrublandsHawaiian tropical high shrublandsHawaii
OceanianTropical and subtropical grasslands, savannas, and shrublandsHawaiian tropical low shrublandsHawaii
OceanianTropical and subtropical grasslands, savannas, and shrublandsNorthwestern Hawaii scrubHawaii