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Ecological Subregions: Sections and Subsections of the Conterminous

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Ecological Subregions: Sections and Subsections of the Conterminous 242 Pacific Lowland Mixed Forest Province 313B Navaho Canyonlands Section 332B Western Glaciated Plains Section M333C Northern Rockies Section 211 Northeastern Mixed Forest Province 222L North Central U.S. Driftless and Escarpment Section 232I Northern Atlantic Coastal Flatwoods Section 313Ba Chuska Mountains Woodland Subsection 332Ba Drift Plains Subsection M333Ca Livingston Mountains Subsection 125∞0'0"W 120∞0'0"W 115∞0'0"W 110∞0'0"W 105∞0'0"W 100∞0'0"W 95∞0'0"W 90∞0'0"W 85∞0'0"W 80∞0'0"W 75∞0'0"W 70∞0'0"W 65∞0'0"W 222La Menominee Eroded Pre-Wisconsin Till Subsection 232Ia Lower Terraces Subsection 242A Puget Trough Section 313Bc Chuska Valley Cold Desert Shrubland Subsection 332Bb James River Lowland Subsection M333Cb Canadian Rockies-Whitefish, Swan Mountains Subsection 211A Aroostook Hills and Lowlands Section 222Lb Melrose Oak Forest and Savannah Subsection 232Ib Tidal Area Subsection 242Aa Fraser Lowland Subsection 313Bd Chaco Basin High Desert Shrubland Subsection 332Bc Glacial Lake Dakota Subsection M333Cc Mission-Swan Valley-Flathead River Subsection 211Aa Aroostook Hills Subsection 222Lc Mississippi-Wisconsin River Ravines Subsection 242Ab Eastern Puget Riverine Lowlands Subsection 313Be San Juan Basin North Subsection 332Bd Southern Missouri Coteau Slope Subsection M333Ce Flathead Thrust Faulted Mountains Subsection 211Ab Aroostook Lowlands Subsection 222Ld Kickapoo-Wisconsin River Ravines Subsection 232J Southern Atlantic Coastal Plains and Flatwoods Section 242Ac San Juan Islands Subsection 313Bo San Mateo Mountains Woodlands Subsection 332Be Southern Missouri Coteau Slope Subsection M333Cf Northern Rocky Mountain Front Subsection 222Le Mineral Point Prairie-Savannah Subsection 232Ja Sand Hills Subsection 211B Maine-New Brunswick Foothills and Lowlands Section 242Ad Olympic Rainshadow Subsection 313Bp San Mateo Mountains Coniferous Forest Subsection M333Cg Middle Rocky Mountain Front Subsection 242Aa 222Lf Western Paleozoic Plateau Subsection 232Jb Northern Loam Plains Subsection ECOLOGICAL SUBREGIONS: SECTIONS AND 211Ba Central Maine Foothills Subsection 242Ae Eastern Puget Uplands Subsection 313Bs San Agustin Plains Grassland Subsection 332C Nebraska Sand Hills Section M333Ch Southern Rocky Mountain Front Subsection 232Jc Southwestern Loam Hills Subsection 211Bb Maine-New Brunswick Lowlands Subsection 242Af Central Puget Lowlands Subsection 332Ca Northern and Western Sand Hills Subsection 242Ac 222M Minnesota and Northeast Iowa Morainal-Oak Savannah Section 232Jd Lower Loam Hills Subsection 242Ag Southern Puget Prairies Subsection 313C Tonto Transition Section 332Cb Sand Hills Borders Subsection 222Ma Alexandria Moraine-Hardwood Hills Subsection 232Je Atlantic Southern Loam Hills Subsection 242Ae 211C Fundy Coastal and Interior Section 242Ah Cowlitz-Chehalis Foothills Subsection 313Ca Verde Plains Desert Grass-Shrubland Subsection 332Cc Central Nebraska Loess Hills Subsection M242Dd SUBSECTIONS OF THE CONTERMINOUS UNITED STATES 222Mb Big Woods Moraines Subsection 232Jf Gulf Southern Loam Hills Subsection M333D Bitterroot Mountains Section 211Ca Maine Eastern Interior Subsection 242Ai Cowlitz-Newaukum Prairie Floodplains Subsection 313Cb Chino High Plains Grassland Subsection 332Cd West Central Lakes Subsection 242Ab 222Mc Anoka Sand Plain Subsection 232Jg Floodplains and Terraces Subsection M333Da Coeur d’Alene Mountains Subsection M333Ag 211Cb Maine Eastern Coastal Subsection 313Cc Mazatzal Mountains Interior Chapparral Subsection 332Ce Western Loess and Till Plains Subsection M242Ac M242Da 222Md Rosemont Baldwin Plains and Moraines Subsection M333Db St. Joe-Bitterroot Mountains Subsection 232K Florida Coastal Plains Central Highlands Section 242B Willamette Valley Section 313Cd Mazatzal Mountains Woodland Subsection 332Cf Central Platte Valley Subsection 242Ad 211D Central Maine Coastal and Embayment Section 222Me Oak Savannah Till and Loess Plains Subsection 242Ba Portland-Vancouver Basin Subsection M333Dc Clark Fork Valley and Mountains Subsection 242Ae M242De 232Ka Florida Northern Highlands Subsection M333Ae 211Da Central Maine Embayment Subsection 313D Painted Desert Section 332D North Central Great Plains Section M333Dd North Idaho Hills and Valleys Subsection M333Ae 222N Lake Agassiz-Aspen Parklands Section 232Kb Florida Central Highlands Subsection 242Bb Prairie Terraces and Floodplains Subsection M242Ai Regional products compiled at a scales of 1:500,000 to 1:1,000,000 by Forest Service regional ecological mappers in participation with 211Db Casco Bay Coast Subsection 242Bd Valley Foothills Subsection 313Da Little Colorado River Valley Cold Desert Shrubland Subsection 332Da Ponca Plains Subsection M333De Clearwater Mountains and Breaks Subsection M333Ad 222Na Aspen Parklands Subsection 242Ae M242Db M333Ag 211Dc Penobscot Coast Subsection 313Db Painted Desert Steppe Grassland Subsection 332Dd Southern Missouri Coteau Slope Subsection 232L Gulf Coastal Lowlands Section 242Af 342Im federal, state, and non-governmental partners. Regional products recompiled at a scale of 1:1,000,000 following map unit criteria within 222R Wisconsin Central Sands Section 232La LA-MS Gulf Coast Flatwoods-Bays and Barrier Islands Subsection 313Dc Hopi Mesas Woodland Subsection 332De Southern Missouri Coteau Subsection M334 Black Hills Coniferous Forest Province M242Aa M242Ad M333Ah M333Ab 211E St . Lawrence and Champlain Valley Section M242 Cascade Mixed Forest - Coniferous Forest - Alpine Meadow Seattle 222Ra Central Wisconsin Sand Plain Subsection 232Lb GA-FL Gulf Coast Flatwoods-Bays and Barrier Islands Subsection 313De Kaibab Woodland Subsection 332Df Southern River Breaks Subsection 211Ea St. Lawrence Glacial Marine Plain Subsection Province M334A Black Hills Section M242DgM242Df the National Hierarchical Framework of Ecological Units by: 222Rb Neilsville Sandstone Plateau Subsection 232Lc FL Gulf Coast Flatwoods-Bays and Barrier Islands Subsection 313Df Kaibab Coniferous Forest Subsection 332Dg Dakota-Nebraska Eroded Tablelands Subsection M242Ae 242Af 342Id M333Ba 242Ae 211Eb St. Lawrence Till Plain Subsection M334Aa Black Hills Foothills Subsection M333Cc M242A Oregon and Washington Coast Ranges Section M333Ad 211Ec Champlain Glacial Lake and Marine Plains Subsection 332E South Central Great Plains Section M334Ab Black Hills Limestone Plateau-Core Highlands Subsection M333Aa M333Cf 331Db 222U Lake Whittlesey Glaciolacustrine Plain Section M242Aa Coastal Lowlands and Uplands Subsection 315 Southwest Plateau and Plains Dry Steppe and Shrub Province 342Ib 211Ed Champlain Hills Subsection 234 Lower Mississippi Riverine Forest Province M333Ca 222Ua Western Paleozoic Plateau Subsection 332Ea Smokey Hills Subsection M242Ad 242Ab David T. Cleland; Jerry A. Freeouf; James E. Keys; Greg J. Nowacki; Constance A. Carpenter; W. Henry McNab M242Ac Low Olympics Subsection 242Ag M242Dh 342Ib 211Ab 211Ee St. Lawrence Glacial Lake Plain Subsection 222Ub Mad River Interlobate Plains Subsection 315A Pecos Valley Section 332Ef Eastern Arkansas River Lowlands Subsection 341 Intermountain Semi-Desert and Desert Province M333Ad M333Bb 234A Southern Mississippi Alluvial Plain Section M242Ad Volcanics Subsection M333Ai 222Uc Maumee Lake Plain Subsection 315Aa Artesia Plains Desert Grass-Shrubland Subsection 332En Eastern Sand Sage-Mixed Prairie Subsection M242Af 342Ib 211F Northern Glaciated Allegheny Plateau Section 234Aa Southern Mississippi River Alluvial Plain Subsection M242Ae Outwash Subsection 341A Bonneville Basin Section 222Ud Southeast Lake Michigan Plains and Dunes Subsection 234Ad Baton Rouge Terrace Subsection 315Ab Pecos Valley Desert Shrubland Subsection 242Ah M242Ba 342Ia 342Ib M333Cb 211Aa 211Fa Cattaraugus Highlands Subsection M242Af Willapa Hills Subsection 332F South Central and Red Bed Plains Section 341Aa Escalante Desert Subsection M242Bc 222Ue Saginaw Clay Lake and Till Plain Subsection 234Ah Macon Ridge Subsection 315Ad Chupadera High Plains Grassland Subsection 242Ai 342Ie M333Da USDA Forest Service 211Fb Central Allegheny Plateau Subsection M242Ag Mid-Coastal Sedimentary Subsection 332Fa Northern South Central and Red Bed Plains Subsection 341Ab Mineral Mountains Subsection M242Ad 331Da M211Aa M211Ab 211Fc Eastern Allegheny Plateau Subsection M242Ah Southern Coastal Mountains Subsection 332Fb Southern South Central and Red Bed Plains Subsection 234C Atchafalaya and Red River Alluvial Plains Section 315B Texas High Plains Section 341Ac Needle-Wah Wah-Confusion Mountains Subsection 332Ae 211Fd Pocono Plateau Subsection 223 Central Interior Broadleaf Forest Province M242Ai High Olympics Subsection 332Fc Eastern South Central and Red Bed Plains Subsection 342Ig M333Bc 331Dh 331La Regions 234Ca Red River Alluvial Plain Subsection 315Ba Querecho Plains Grassland Subsection 341Ap Stansbury Range Subsection 242Ah 211Ff Glaciated High Plateau Subsection M333Cg 331Ea 315Bb Morrison High Plains Grassland Subsection 332Fd Canadian River Dune Belt Subsection 341Aq Canyon Mountain Range Subsection 331Ka 332Ab 223A Ozark Highlands Section 234Cb Atchafalaya Alluvial Plain Subsection M242B Western Cascades Section M242Bb M242Cb 315Bc Canadian River Canyon and Hills Woodland Subsection 341Ar Grassy-Lakeside-Hogup Mountains and Valleys Subsection M242Af 342Ib 332Aa Southern Research Station 211G Northern Unglaciated Allegheny Plateau Section 223Aa St. Francois Knobs and Basins Subsection 234Cc Teche Terrace Subsection M242Ba West Cascade Slope Forest Subsection M242Aa M333Ce 45∞0'0"N 223Ab Central Plateau Subsection 234Cd Opelousas
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