Ecosystem, temperate, nitrogen limitation

The availability of reactive nitrogen limits photosynthesis in a wide variety of terrestrial and marine ecosystems. Nitrogen limitation is particularly common in temperate and boreal forests, temperate grasslands, and Arctic and subalpine tundra, and in estuaries and coastal marine ecosystems in temperate zones.Introduction of relatively large external inputs of the nutrient must be expected to change the productivity of affected ecosystems, as well as the modes of their nitrogen storage and composition of their species. 

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