Lake classification in Nova Scotia from phosphorous loading, transparency and hypolimnetic oxygen consumption
Schwartz, P. Y.
Underwood, J. K.
Nova Scotian Institute of Science
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Three indices of eutrophication are used to compare effects of urbanization on seven headwater lakes near Halifax, Nova Scotia. Annual (1983) inputs of phosphorus were calculated and compared with lake Secchi transparencies and rates of consumption of hypolimnetic oxygen (Thienemann index). Results from transparency and oxygen deficits were similar but implied greater eutrophication than did the phosphorus index. Brief discussion of some inherent problems of each index is included.