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In ecology, functional groups are collections of organisms based on morphological, physiological, behavioral, biochemical, environmental responses or on trophic criteria. In ocean biogeochemical modelling, the following four criteria have been proposed:〔Le Quere et al. (2005). Ecosystem dynamics based on plankton functional types for global ocean biogeochemistry models. Global Change Biology Vol 11 (11), 2016-2040, 〕 * That the collection of organisms, called a plankton function type (PFT), should have an explicit biogeochemical role * that the PFT should be defined by a distinct set of physiological, environmental, or nutrient requirements controlling its biomass and productivity, * that the behavior of the PFT should have distinct effects on the performance of other PFTs, for instance, through selective depletion of nutrients or grazing, and * that the PFT should be of quantitative importance in at least some region of the ocean. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Functional group (ecology)」の詳細全文を読む スポンサード リンク
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