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Primary production and light availability in Lake Onalaska: Results of a pilot study to evaluate continuous water quality monitors for use in Upper Mississippi River backwaters

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To evaluate the performance of a continuous monitoring device (Waterlogger) developed at Iowa State University, a pilot study was conducted on Lake Onalaska, Wisconsin (Navigational Pool 7 of the Upper Mississippi River), between June 28 and October 4, 1990. The devices recorded subsurface (20 cm) temperature and dissolved oxygen and surface and subsurface (50 cm) light (photon flux of photosynthetically active radiation) every 6 minutes at eight sites. The Waterlogger device stores its measurements electronically on battery-powered memory (RAM) within the unit and can transmitted the recorded data directly to a personal computer. Conversion of the Waterlogger readings to calibrated engineering units is achieved by additional processing [...]

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  • Upper Midwest Environmental Sciences Center (UMESC)

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Report by Iowa State University, Ames, Iowa, for the U.S. Fish and Wildlife Service, Environmental Management Technical Center, Onalaska, Wisconsin

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