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Internal phosphorus loading to shallow Edinboro Lake in northwestern Pennsylvania

✍ Scribed by Kevin J. Garber; Richard T. Hartman

Publisher
Springer
Year
1985
Tongue
English
Weight
560 KB
Volume
122
Category
Article
ISSN
1573-5141

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✦ Synopsis

The summer stratification phosphorus budget for eutrophic Edinboro Lake in northwestern Pennsylvania was determined. Phosphorus loading from internal sources contributed 141 kg, (79%) and 55 kg, (68%) of the mass phosphorus increase in the lake in 198 1 and 1982, respectively. Calculated anaerobic sediment release rates of total phosphorus were 9.9 and 3.7 mgm-2 . d a y ' for these two years. The observed summer maximum chlorophyll a concentration was 1.5-3 times greater than that predicted by existing models. Year-to-year variability in the internal phosphorus load for this lake and others is discussed. Without a data base that will permit the comparison of lakes and with and without a significant supply of internal phosphorus, prediction of the relative importance of internal loading in a particular lake will be difficult.

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