A Eutrophic Lake: Lake Mendota, Wisconsin by Thomas D. Brock

By Thomas D. Brock

Lake Mendota has frequently been referred to as "the so much studied lake on the earth. " starting within the "classic" interval of limnology within the overdue nineteenth century and carrying on with during the current time, this lake has been the topic of a large choice of experiences. even though lots of those stories were released in available journals, an important quantity have seemed in neighborhood monographs and reviews, ephemeral records, or poorly disbursed journals. so far, there was no try at an artificial therapy ofthe substantial volume of labor that has been released. One purpose of the current ebook is to provide a com­ prehensive compilation of the foremost early reports on Lake Mendota and to ascertain how they impinge on very important present-day organic questions. moreover, this publication offers a precis of box and laboratory paintings conducted in my very own laboratory over a interval of approximately 6 years and indicates the place correlations with previous paintings exist. The e-book can be ofinterest to limnologists wanting a prepared connection with information and released papers in this very important lake, to biogeochemists, ocean­ ographers, and low-temperature geochemists drawn to lakes as version sys­ tems for worldwide methods, and to lake managers drawn to knowing momentary and long term adjustments in lake platforms. even though the main thrust ofthe current booklet is ecologicaland environmental, enough heritage has been offered on different facets ofLake Mendota's limnology in order that the e-book also needs to be necessary to nonbiologists.

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Extra info for A Eutrophic Lake: Lake Mendota, Wisconsin

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Average wind power by Julian week, 1966- I975, over Lake Mendota. Units are power, lOs ergs -ern"? ·day-I. Bars are ± standard error of the mean . From Stauffer (1980). 2. 5. 1 Data for 1950's from McCaskey (1955); for 1970's from Lathrop (1979). All values to be multiplied by 106• All units, rn>, Direct groundwater measurements of Brock et al. 96 X 106 rn! yr- '. 2. Overland runoff directly into the lake, R 3. Input from streams and rivers, I 4. Ground water seepage, GI Water leaves the lake from the following sources: 1.

A. Ragotzkie. 1955. Rate of water replacement in a bay of Lake Mendota, Wisconsin . American Journal ofScience, 253: 533-539. A. E. Suomi. 1952. The circulation of Lake Mendota. Transactions ofAmerican Geophysical Union, 1: 42-46. B. A. Bryson. 1959. An investigation of the circulation over Second Point Bar, Lake Mendota. Limnology and Oceanography, 4: 140-144. Cline, Denzel R. 1965. Geology and ground-water resources of Dane County, Wisconsin. s. Geological Survey Water-Supply Paper 1779-U, 64 pp.

6. Seasonal changes in water temperature for the years 1906 and 1976. The figure for 1906 also presents data for dissol ved oxygen concentration (ppm , numb ers in italics). Data for 1906 from Birge and Juday (1911) and for 1976 from the present work. The figure for 1906 is from Mortimer (1956). 6 0. 2 Snow Cover Gone - 0. 7. Albedo of Lake Mendota preceding ice breakup. From Ragotzkie (1978). more importantly due to the present of snow (Ragotzkie, 1978). In a heavy snow year, light penetration into Lake Mendota may be very low, thus reducing the development of under-water algal blooms.

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