Predicting concentration of total phosphorus and chlorophyll a in a lake with short hydraulic residence time

The relationship between total phosphorus and chlorophyll-a was determined for Skinner lake (Indiana), a watershed of nearly 4000 ha, with 68 per cent agricultural land and 32 per cent forest and wetlands. A phosphorus-dependent algal yield in the epilimnion was found, with 90 per cent of total phos...

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Bibliographic Details
Published in:Hydrobiologia 1985-01, Vol.122 (3), p.231-241
Main Authors: PREMO, B. J, MCNABB, C. D, PAYNE, F. C, BATTERSON, T. R, CRAIG, J. R, SIAMI, M
Format: Article
Language:English
Subjects:
Earth sciences
Earth, ocean, space
Exact sciences and technology
Freshwater
Hydrology. Hydrogeology
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Summary:The relationship between total phosphorus and chlorophyll-a was determined for Skinner lake (Indiana), a watershed of nearly 4000 ha, with 68 per cent agricultural land and 32 per cent forest and wetlands. A phosphorus-dependent algal yield in the epilimnion was found, with 90 per cent of total phosphorus loading reaching the lake by streamflow, of which 93 per cent entered during snowmelt and spring overturn. The Vollenweider model was modified to accommodate features unique to the lake, and indicated that mean epilimnetic total phosphorus and chlorophyll-a in inlet streams could be assessed from the lake water residence time during the spring overturn and the summer stratification. Variability in lake models which averaged data over an annual period could be reduced by considering lake-specific seasonal variation in the hydrology and external total phosphorus loading.
ISSN:0018-8158
1573-5117
DOI:10.1007/BF00018283