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Estimating the Nitrogen and Phosphorus Loads of Wintering Waterfowl Feces in Lake Paldang  

Lee, Jangho (Han-River Environment Research Center, National Institute of Environmental Research)
Park, Hae-Kyung (Han-River Environment Research Center, National Institute of Environmental Research)
Publication Information
Journal of Korean Society on Water Environment / v.26, no.2, 2010 , pp. 311-316 More about this Journal
Abstract
We estimated the nitrogen and phosphorus loads of wintering waterfowl feces in Lake Paldang. The average number of individual birds that belonged to Anatidae species was 2,852.5 from 2005 to 2008 in Lake Paldang. The number of Anatidae reached 97.4% of the total number of individual birds. For evaluating the loading amounts of N and P by waterfowl to Lake Paldang, the feces dry weight (g/day) of each Anatidae species was estimated by multiplying the body weight of the each bird by 2.25% and assumed that N and P in feces contain 1.46% and 0.33%, respectively. We assigned probability 1/3 to the nutrient decomposition of the bird feces in water. The nitrogen loading by wintering waterfowl feces was 0.06 ton/year and the phosphorus loading was 0.001 ton/year. These amounts were 0.0002% of all N loadings and 0.0001% of all P loadings. Therefore the wintering waterfowl might have little impact on the water quality in terms of eutrophication in Lake Paldang.
Keywords
Lake Paldang; Nitrogen; Phosphorus; Waterfowl feces;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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