The levels of inorganic nitrogen in Arctic ecosystems were substantially lower than the amount of nitrogen actually taken up by plants as : Arctic sedges can take up organic forms of nitrogen.
Arctic is a unique ecosystem with complex food web made up of organisms adapted to extreme conditions and is one of the most biologically productive ecosystems supporting many large fisheries and migratory birds that come to the Arctic in the summer to breed.
Nitrogen lack is related to the soil type. Excessive irrigation and heavy rains causes nitrogen deficiency because of overwatering. Lack of soil moisture hinders the absorption of water-soluble nutrients by plant roots.
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