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biome
A biome is a formation of plants and animals that have common characteristics due to similar climates and can be found over a range of continents.〔(The World's Biomes ), Retrieved August 19, 2008, from (University of California Museum of Paleontology )〕 Biomes are distinct from habitats, because any biome can comprise a variety of habitats.
==Classification==
Biomes are defined by climate regimes and biogeography.
A 1978 study on North American grasslands found a positive logistic correlation between evapotranspiration in mm/yr and above-ground net primary production in g/m2/yr. The general results from the study were that precipitation and water use led to above-ground primary production, while solar irradiation and temperature lead to below-ground primary production (roots), and temperature and water lead to cool and warm season growth habit.〔Pomeroy, Lawrence R. and James J. Alberts, editors. Concepts of Ecosystem Ecology. New York: Springer-Verlag, 1988.〕 These findings help explain the categories used in Holdridge’s bioclassification scheme (see below), which were then later simplified by Whittaker. The number of classification schemes and the variety of determinants used in those schemes, however, should be taken as strong indicators that biomes do not fit perfectly into the classification schemes created.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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