This chapter describes some of the major terrestrial biomes in the world; tropical forests, savannas, deserts, temperate grasslands ... Tropical rainforests have an emergent layer of tall trees ...

Some of the world’s main biomes include rainforest, desert, savannah, grassland, woodland and tundra. Each biome has characteristics that make it unique, for example Alaska is a type of tundra.

The temperate index is calculated from terrestrial and freshwater populations from the Palearctic and Nearctic realms, and marine populations found north or south of the tropics. The global tropical ...