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Efficiencies of forestry best management practices for reducing sediment and nutrient losses in the eastern United StatesAuthor(s): Pamela Edwards; Karl W.J. Williard
Source: Journal of Forestry. July/August: 245-249.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
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DescriptionQuantifying 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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CitationEdwards, 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.
Keywordsharvesting, nitrogen, paired watersheds, phosphorus, water quality
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