Decomposition of organic materials in grasslands leads to nutrient availability and nutrient cycling, which define quality and functionality of rangeland ecosystems. The inputs to the system include urine, dung, litter, and trampled vegetation and maybe influenced spatially and temporally by the grazing strategy. The nutrient cycling model of this grazed system as well as temporal changes in soil C will be reported for a grazing study conducted at the Barta Brothers Ranch in the meadows of the Sandhills region of Nebraska.

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