Ecoregions
115 WWF terrestrial ecoregions
Biodiversity Heatmap
Species count by biogeographic realm and taxonomic class
| Realm | Acidimicrobiia | Acidobacteriae | Aconoidasida | Actinomycetia | Actinopterygii | Aenigmatarchaeia | Agaricomycetes | Alphaproteobacteria |
|---|---|---|---|---|---|---|---|---|
| Afrotropic | — | — | 1 | — | — | — | 1 | — |
| Australasia | — | — | — | — | 1 | — | — | — |
| Indomalaya | — | — | — | — | 1 | — | 1 | — |
| Nearctic | — | — | — | — | — | — | — | — |
| Neotropic | — | — | — | — | — | — | 1 | — |
| Oceania | — | — | — | — | 1 | — | — | — |
| Palearctic | — | — | — | — | 1 | — | 1 | — |
| Antarctic | — | — | — | — | — | — | — | — |
Low
High
Boreal Forests / Taiga (15)
Alaska Peninsula montane taiga
NA0601
Nearctic
48877 km²
Central Canadian Shield forests
NA0602
Nearctic
271655 km²
Cook Inlet taiga
NA0603
Nearctic
28042 km²
Copper Plateau taiga
NA0604
Nearctic
17257 km²
Eastern Canadian forests
NA0605
Nearctic
465732 km²
Eastern Canadian Shield taiga
NA0606
Nearctic
757987 km²
Interior Alaska-Yukon lowland taiga
NA0607
Nearctic
426276 km²
Northern Canadian Shield taiga
NA0612
Nearctic
632841 km²
Northern Cordillera forests
NA0613
Nearctic
169391 km²
Northwest Territories taiga
NA0614
Nearctic
334352 km²
Southern Hudson Bay taiga
NA0616
Nearctic
373301 km²
Mid-Canada Boreal Plains forests
NA06376
Nearctic
569720 km²
Midwest Canadian Shield forests
NA06377
Nearctic
757040 km²
Muskwa-Slave Lake taiga
NA06378
Nearctic
298907 km²
Watson Highlands taiga
NA06383
Nearctic
239104 km²
Deserts & Xeric Shrublands (13)
Baja California desert
NA1301
Nearctic
77590 km²
Central Mexican matorral
NA1302
Nearctic
59195 km²
Chihuahuan desert
NA1303
Nearctic
501897 km²
Colorado Plateau shrublands
NA1304
Nearctic
283435 km²
Great Basin shrub steppe
NA1305
Nearctic
300878 km²
Gulf of California xeric scrub
NA1306
Nearctic
23537 km²
Meseta Central matorral
NA1307
Nearctic
124975 km²
Mojave desert
NA1308
Nearctic
127338 km²
Snake-Columbia shrub steppe
NA1309
Nearctic
193188 km²
Sonoran desert
NA1310
Nearctic
224486 km²
Tamaulipan matorral
NA1311
Nearctic
16237 km²
Tamaulipan mezquital
NA1312
Nearctic
125091 km²
Wyoming Basin shrub steppe
NA1313
Nearctic
132682 km²
Mediterranean Forests, Woodlands & Scrub (4)
Temperate Broadleaf & Mixed Forests (17)
Allegheny Highlands forests
NA0401
Nearctic
73238 km²
Appalachian mixed mesophytic forests
NA0402
Nearctic
181485 km²
Appalachian-Blue Ridge forests
NA0403
Nearctic
163311 km²
East Central Texas forests
NA0405
Nearctic
55753 km²
Eastern Great Lakes lowland forests
NA0407
Nearctic
129943 km²
Gulf of St. Lawrence lowland forests
NA0408
Nearctic
36257 km²
Mississippi lowland forests
NA0409
Nearctic
116119 km²
New England-Acadian forests
NA0410
Nearctic
334383 km²
Ozark Mountain forests
NA0412
Nearctic
69495 km²
Southern Great Lakes forests
NA0414
Nearctic
227945 km²
Western Great Lakes forests
NA0416
Nearctic
290091 km²
Appalachian Piedmont forests
NA04330
Nearctic
166117 km²
Eastern Canadian Forest-Boreal transition
NA04333
Nearctic
318861 km²
Interior Plateau US Hardwood Forests
NA04336
Nearctic
123527 km²
Northeast US Coastal forests
NA04339
Nearctic
73433 km²
Ozark Highlands mixed forests
NA04340
Nearctic
106391 km²
Upper Midwest US forest-savanna transition
NA04343
Nearctic
136417 km²
Temperate Coniferous Forests (24)
Alberta-British Columbia foothills forests
NA0502
Nearctic
121629 km²
Arizona Mountains forests
NA0503
Nearctic
110910 km²
Atlantic coastal pine barrens
NA0504
Nearctic
14308 km²
Blue Mountains forests
NA0505
Nearctic
70911 km²
Central British Columbia Mountain forests
NA0509
Nearctic
140060 km²
Colorado Rockies forests
NA0511
Nearctic
145702 km²
Eastern Cascades forests
NA0512
Nearctic
53257 km²
Great Basin montane forests
NA0515
Nearctic
8901 km²
Klamath-Siskiyou forests
NA0516
Nearctic
48358 km²
Northern California coastal forests
NA0519
Nearctic
13593 km²
Okanogan dry forests
NA0522
Nearctic
52636 km²
Puget lowland forests
NA0524
Nearctic
36181 km²
Sierra Nevada forests
NA0527
Nearctic
53103 km²
South Central Rockies forests
NA0528
Nearctic
176757 km²
Wasatch and Uinta montane forests
NA0530
Nearctic
45693 km²
British Columbia coastal conifer forests
NA05349
Nearctic
110921 km²
Central Pacific Northwest coastal forests
NA05351
Nearctic
77510 km²
Central-Southern Cascades Forests
NA05352
Nearctic
58854 km²
Fraser Plateau and Basin conifer forests
NA05355
Nearctic
104685 km²
North Cascades conifer forests
NA05358
Nearctic
35270 km²
Northern Pacific Alaskan coastal forests
NA05360
Nearctic
64304 km²
Northern Rockies conifer forests
NA05361
Nearctic
284264 km²
Piney Woods
NA05363
Nearctic
152132 km²
Queen Charlotte Islands conifer forests
NA05365
Nearctic
10241 km²
Temperate Grasslands, Savannas & Shrublands (19)
California Central Valley grasslands
NA0801
Nearctic
46490 km²
Canadian Aspen forests and parklands
NA0802
Nearctic
327663 km²
Edwards Plateau savanna
NA0806
Nearctic
74964 km²
Montana Valley and Foothill grasslands
NA0808
Nearctic
100079 km²
Nebraska Sand Hills mixed grasslands
NA0809
Nearctic
59123 km²
Texas blackland prairies
NA0814
Nearctic
43382 km²
Central US forest-grasslands transition
NA08387
Nearctic
228324 km²
Central Tallgrass prairie
NA08388
Nearctic
342467 km²
Central-Southern US mixed grasslands
NA08389
Nearctic
274963 km²
Cross-Timbers savanna-woodland
NA08390
Nearctic
88188 km²
Flint Hills tallgrass prairie
NA08392
Nearctic
27932 km²
Mid-Atlantic US coastal savannas
NA08393
Nearctic
78476 km²
Northern Shortgrass prairie
NA08396
Nearctic
719348 km²
Northern Tallgrass prairie
NA08397
Nearctic
82919 km²
Palouse prairie
NA08398
Nearctic
83923 km²
Southeast US conifer savannas
NA08399
Nearctic
521305 km²
Southeast US mixed woodlands and savannas
NA08400
Nearctic
28 km²
Western shortgrass prairie
NA08402
Nearctic
487149 km²
Willamette Valley oak savanna
NA08403
Nearctic
14885 km²
Tropical & Subtropical Coniferous Forests (3)
Tropical & Subtropical Dry Broadleaf Forests (1)
Tropical & Subtropical Grasslands, Savannas & Shrublands (1)
Tundra (18)
Alaska-St. Elias Range tundra
NA1101
Nearctic
165303 km²
Aleutian Islands tundra
NA1102
Nearctic
12279 km²
Arctic coastal tundra
NA1103
Nearctic
50041 km²
Arctic foothills tundra
NA1104
Nearctic
130337 km²
Beringia lowland tundra
NA1106
Nearctic
153512 km²
Beringia upland tundra
NA1107
Nearctic
47229 km²
Brooks-British Range tundra
NA1108
Nearctic
160610 km²
Davis Highlands tundra
NA1109
Nearctic
98542 km²
Interior Yukon-Alaska alpine tundra
NA1111
Nearctic
153588 km²
Kalaallit Nunaat High Arctic tundra
NA1112
Nearctic
149284 km²
Ogilvie-MacKenzie alpine tundra
NA1116
Nearctic
302981 km²
Pacific Coastal Mountain icefields and tundra
NA1117
Nearctic
106663 km²
Torngat Mountain tundra
NA1118
Nearctic
32767 km²
Ahklun and Kilbuck Upland Tundra
NA11404
Nearctic
50824 km²
Canadian High Arctic tundra
NA11412
Nearctic
649702 km²
Canadian Low Arctic tundra
NA11413
Nearctic
840832 km²
Canadian Middle Arctic Tundra
NA11414
Nearctic
985868 km²
Kalaallit Nunaat Arctic steppe
NA11417
Nearctic
329027 km²