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To qualify as a biodiversity hotspot on Myers' 2000 edition of the hotspot map, a region must meet two strict criteria: it must contain at least 1,500 species of vascular plants (more than 0.5% of the world's total) as endemics, and it has to have lost at least 70% of its primary vegetation. [6] Globally, 36 zones qualify under this definition. [7]
The European Environmental Agency (EEA) divides Europe into a total of eleven terrestrial biogeographical regions and seven regional seas. [1] The agency has issued the Digital Map of European Ecological Regions (DMEER), and operates with a total of 70 ecoregions, of which 58 are within the European continent.
The biogeographic regions of Europe are biogeographic regions defined by the European Environment Agency. They were initially limited to the European Union member states, but later extended to cover all of Europe west of the Urals, including all of Turkey. The map of biogeographic regions is deliberately simplified and ignores local anomalies.
The terrestrial scheme divides the Earth's land surface into 8 biogeographic realms, containing 867 smaller ecoregions. Each ecoregion is classified into one of 14 major habitat types , or biomes . In 2017 the WWF team revised ecosystem names and boundaries in the Arabian Peninsula, drier African regions, and Southeastern United States.
Megadiversity means exhibiting great biodiversity. The main criterion for megadiverse countries is endemism at the level of species, genera and families. A megadiverse country must have at least 5,000 species of endemic plants and must border marine ecosystems.
Key Biodiversity Areas (KBA) are geographical regions that have been determined to be of international importance in terms of biodiversity conservation, using globally standardized criteria published by the IUCN as part of a collaboration between scientists, conservation groups, and government bodies across the world. [1]
Raster maps of environmental variables including soil pH, potential evapotranspiration, average snow depth, and more. Global 200: Vector data from WWF of "a set of the Earth's terrestrial, freshwater, and marine ecoregions that harbor exceptional biodiversity and are representative of its ecosystems." [7] Global Lakes and Wetlands Database
The Global 200 is the list of ecoregions identified by the World Wide Fund for Nature (), the global conservation organization, as priorities for conservation.According to 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".