Global 200
The Global 200 is the list of ecoregions identified by the World Wide Fund for Nature (WWF) as priorities for conservation. According to the WWF, an ecoregion is defined as a "relatively large unit of land or water containing a characteristic set of natural communities that share a large majority of their species, dynamics, and environmental conditions (Dinerstein et al. 1995, TNC 1997)."
The WWF assigns a conservation status to each ecoregion in the Global 200: critical or endangered; vulnerable; and relatively stable or intact. Over half of the ecoregions in the Global 200 are rated endangered.
Global 200: Terrestrial
Tropical and subtropical moist broadleaf forests
Tropical and subtropical dry broadleaf forests
Tropical and subtropical coniferous forests
Temperate broadleaf and mixed forests
Temperate coniferous forests
Tropical and subtropical grasslands, savannas, and shrublands
Temperate grasslands, savannas, and shrublands
Flooded grasslands and savannas
Montane grasslands and shrublands
Mediterranean forests, woodlands, and shrub
Deserts and xeric shrublands
Global 200: Freshwater ecoregions
Large rivers
Indomalaya
- Mekong River (Cambodia, China, Laos, Myanmar, Thailand, Vietnam)
Large river headwaters
Afrotropic
- Congo basin piedmont rivers and streams (Angola, Cameroon, Central African Republic, Democratic Republic of Congo, Gabon, Republic of Congo, Sudan)
Nearctic
- Mississippi piedmont rivers and streams (United States)
Neotropic
- Upper Amazon rivers and streams (Bolivia, Brazil, Colombia, Ecuador, French Guiana (France), Guyana, Peru, Suriname, Venezuela)
- Upper Paraná rivers and streams (Argentina, Brazil, Paraguay)
- Brazilian Shield Amazonian rivers and streams (Bolivia, Brazil, Paraguay)
Small rivers
Afrotropic
- Upper Guinea rivers and streams (Côte d'Ivoire, Guinea, Liberia, Sierra Leone)
- Madagascar freshwater (Madagascar)
- Gulf of Guinea rivers and streams (Angola, Cameroon, Democratic Republic of Congo, Equatorial Guinea, Gabon, Nigeria, Republic of Congo)
- Cape rivers and streams (South Africa)
Nearctic
- Southeastern rivers and streams (United States)
- Pacific Northwest coastal rivers and streams (United States)
- Gulf of Alaska coastal rivers and streams (Canada, United States)
Neotropic
- Guianan freshwater (Brazil, French Guiana, Guyana, Suriname, Venezuela)
- Greater Antillean freshwater (Cuba, Dominican Republic, Haiti, Puerto Rico)
Palearctic
- Balkan rivers and streams (Albania, Bosnia and Herzogovina, Bulgaria, Croatia, Greece, Macedonia, Turkey, Yugoslavia)
- Russian Far East rivers and wetlands (China, Mongolia, Russia)
Large lakes
Afrotropic
- Rift Valley lakes (Burundi, Democratic Republic of Congo, Ethiopia, Kenya, Malawi, Mozambique, Rwanda, Tanzania, Uganda, Zambia)
Neotropic
- High Andean lakes (Argentina, Bolivia, Chile, Peru)
Small lakes
Afrotropic
- Cameroon crater lakes (Cameroon)
Australasia
- Lakes Kutubu and Sentani (Indonesia, Papua New Guinea)
- Central Sulawesi lakes (Indonesia)
Indomalaya
- Philippines freshwater (Philippines)
- Inle Lake (Myanmar)
- Yunnan lakes and streams (China)
Neotropic
- Mexican highland lakes (Mexico)
Xeric basins
Australasia
- Central Australian freshwater (Australia)
Palearctic
- Anatolian freshwater (Syria, Turkey)
Global 200 Marine ecoregions
Temperate shelfs and seas
Mediterranean
- Mediterranean Sea (Albania, Algeria, Bosnia and Herzegovina, Croatia, Cyprus, Egypt, France, Greece, Israel, Italy, Lebanon, Libya, Malta, Monaco, Morocco, Serbia & Montenegro, Slovenia, Spain, Syria, Tunisia, Turkey)
North Temperate Atlantic
- Northeast Atlantic Shelf Marine (Belgium, Denmark, Estonia, Finland, France, Germany, Ireland, Latvia, Lithuania, Netherlands, Norway, Poland, Russia, Sweden, United Kingdom)
- Grand Banks (Canada, St. Pierre and Miquelon (France), United States)
- Chesapeake Bay (United States)
North Temperate Indo-Pacific
Temperate upwelling
North Temperate Indo-Pacific
South Temperate Indo-Pacific
Tropical upwelling
Eastern Tropical Atlantic
- Canary Current (Canary Islands, Gambia, Guinea-Bissau, Mauritania, Morocco, Senegal, Western Sahara)
Tropical coral
Western Indo-Pacific
- Maldives, Chagos, and Lakshadweep atolls (Chagos Archipelago (United Kingdom), India, Maldives, Sri Lanka)
- Red Sea (Djibouti, Egypt, Eritrea, Israel, Jordan, Saudi Arabia, Sudan, Yemen)
- Arabian Sea (Djibouti, Iran, Oman, Pakistan, Qatar, Saudi Arabia, Somalia, United Arab Emirates, Yemen)
- East African Marine (Kenya, Mozambique, Somalia, Tanzania)
- West Madagascar Marine (Comoros, Madagascar, Mayotte and Iles Glorieuses (France), Seychelles)
Western Tropical Atlantic
- Mesoamerican Reef (Belize, Guatemala, Honduras, Mexico)
- Greater Antillean Marine (Bahamas, Cayman Islands, Cuba, Dominican Republic, Haiti, Jamaica, Puerto Rico, Turks and Caicos Islands, United States)
- Southern Caribbean Sea (Aruba, Columbia, Netherlands Antilles, Panama, Trinidad and Tobago, Venezuela)
- Northeast Brazil Shelf Marine (Brazil)