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The following is a list of marine ecoregions, as defined by the WWF and The Nature Conservancy. The WWF/Nature Conservancy scheme groups the individual ecoregions into 12 marine realms, which represent the broad latitudinal divisions of polar, temperate, and tropical seas, with subdivisions based on ocean basins.
Other classifications of marine ecoregions or equivalent areas have been widely developed at national and regional levels, as well as a small number of global schemes. Each of these systems, along with numerous regional biogeographic classifications, was used to inform the MEOW system.
Ecoregions of North America, featuring the 50 United States, the District of Columbia and the five inhabited territories. The following is a list of United States ecoregions as identified by the World Wide Fund for Nature (WWF). The United States is a megadiverse country with a high level of endemism across a wide variety of ecosystems.
The World Wildlife Fund (WWF) identifies terrestrial, marine, freshwater, and ecoregions: . Global 200; List of terrestrial ecoregions (WWF) 867 terrestrial ecoregions. List of marine ecoregions (WWF), 232 marine ecoregions of the coastal and continental shelf areas.
Terrestrial Ecoregions of the World (Olson et al. 2001, BioScience) WWF terrestrial ecoregions of the world One way of mapping the world into 18 terrestrial vegetation biomes, each containing one or more ecoregions EPA level III ecoregions in the contiguous United States. Alaska ecoregions (102-120) not shown.
This page was last edited on 20 September 2020, at 18:08 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
This is a list of terrestrial ecoregions as compiled by the World Wildlife Fund (WWF). The WWF identifies terrestrial , freshwater , and marine ecoregions . The terrestrial scheme divides the Earth's land surface into 8 biogeographic realms , containing 867 smaller ecoregions.
The classification system has four levels. Only the first three levels are shown on this list. "Level I" divides North America into 15 broad ecoregions. "Level II" subdivides the continent into 52 smaller ecoregions. "Level III" subdivides those regions again into 182 ecoregions. [1] [2] "Level IV" is a further subdivision of Level III ...