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    Description

    Quantifying the effects of forestry best management practices (BMPs) on sediment and nutrient loads is a critical need. Through an exhaustive literature search, three paired forested watershed studies in the eastern United States were found that permitted the calculation of BMP efficiencies--the percent reduction in sediment or nutrients achieved by BMPs. For sediment, BMP efficiencies ranged from 53 to 94% during harvest and up to 1 year after harvesting. For nutrients, BMP efficiencies were higher for total nitrogen (60-80%) and phosphorus (85-86%), which included particulate and sediment-bound forms, than for nitrate-nitrogen (12%), which occurs primarily in the dissolved phase. Results indicate forestry BMPs can significantly reduce sediment and nutrient loads; however, BMPs appear to be more effective at reducing pollutants associated with surface runoff than with subsurface flow.

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    Citation

    Edwards, Pamela; Williard, Karl W.J. 2010. Efficiencies of forestry best management practices for reducing sediment and nutrient losses in the eastern United States. Journal of Forestry. July/August: 245-249.

    Keywords

    harvesting, nitrogen, paired watersheds, phosphorus, water quality

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https://www.fs.usda.gov/treesearch/pubs/36543