Limnological Features of a Minnesota Seepage Lake

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Abstract
A small Lake lacking stream drainage and located in a section of north-western Minnesota characterized by hard-water drainage lakes, was the subject of a 1 yr. study. The lake was poor in bound CO2, nitrogen, and phosphorus. The thermocline was shallow and there was a large O2 deficit in the deeper strata during winter and summer stagnation. Estimates of the wt. of the avg. summer crop of seston, rooted plants, bottom fauna and fish (as detd. by poisoning with rotenone) indicated a low level of productivity. There were indications that drainage features were more important than regional soil characteristics in determining the level of mineral fertility.

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