A biome is a geographically extensive ecosystem, occurring wherever environmental conditions are suitable for its development. Biomes are not characterized by their species it is the dominant life forms that identify them. At far-flung parts of biomes, different species may dominate the ecosystem. They may not even be closely related, but are similar in form and function because of convergent evolution. The occurrence of biomes is determined by the environmental regime in which they develop. Terrestrial biomes are primarily influenced by temperature and precipitation. Freshwater biomes are mostly affected by nutrient availability, water transparency, and depth. Marine ones biomes are affected by nutrients and physical oceanography. Tundra vegetation of short stature, occurring at high latitude (arctic) and high altitude (alpine) Boreal forest northern subarctic forest, usually dominated by coniferous trees. Montane forest a subalpine analogue of the boreal (boreal forest but on mountain) Temperate forest angiosperm-dominated forest deciduous trees of intermediate latitudes.