Influences on Ecosystem Function IV: Nitrogen Biogeochemistry
Influences on Ecosystem Function IV: Nitrogen Biogeochemistry
Ungulate grazing, primarily by elk and bison, accelerates nitrogen cycling within the northern-range system by consumption, digestion, excretion, and subsequent mineralization. Ungulate use does not in and of itself increase or decrease the total nitrogen content of the system. The content is determined by input-output processes that include fixation, denitrification, volatilization, soil erosion, aerosol transport, and seasonal elk movements. Without measurements of the input-output processes, no nitrogen budget for the system can be formulated.
Keywords: nitrogen cycling, mineralization, input-output processes, denitrification, fixation, volatilization, erosion
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