Biomes are regions defined by climatic and geographical conditions. Unlike the biogeographic regions or ecozones, biomes are not defined by historical or taxonomic similarity. There are many biome classifications and each includes a different number of classes.
Terrestrial
Freshwater
Marine
Tundra
Freshwater polar
Polar
Boreal forests (taiga)
Freshwater montane
Temperate seas & shelves
Temperate mixed forest
Temperate coastal rivers
Temperate upwelling
Temperate coniferous forests
Wetlands & rivers of temperate plains
Tropical upwelling
Temperate shrublands, savannas and grasslands
Temperate montane rivers
Tropical coral
Tropical and subtropical rainforests
Tropical and subtropical coastal rivers
Kelp forest
Tropical and subtropical dry forests
Wetlands & rivers of tropical and subtropical plains
Hydrothermal springs
Tropical and subtropical coniferous forests
Endorheic basins & freshwater in arid zones
Benthic zone (sea floor)
Tropical and subtropical Shrublands, savannas and grasslands
