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Do nutrients vary regionally in streams?

nutrients regionally Streams
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Do nutrients vary regionally in streams?

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Natural features, such as geology, climate, hydrology, soils, and land-management practices, such as tile drainage, irrigation, and conservation strategies, affect the movement of nutrients from the land to water and thereby often result in different concentration patterns over large regions. Concentrations of total nitrogen and total phosphorus in agricultural streams were high (greater than 3.17 milligrams per liter, mg/L for total nitrogen and greater than 0.28 mg/L for total phosphorus) at most sites in the Northeast, Midwest, and Northwest. These sites are in areas that receive large annual inputs of nitrogen and phosphorus in the form of fertilizer and manure, and (in some cases) nitrogen from atmospheric deposition. High concentrations in the Midwest are influenced by the prevalence of tile drains, which facilitate water movement from fields to streams. High concentrations at many sites in the Northwest, the Northern Plains, the Southwest, and California might be influenced by l

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