Monthly water temperature profile series were taken in a near-shore harbor area of Lake Michigan near a fossil-fueled electric generating facility at Michigan City, Indiana. Profiles were recorded every 6 hours over 24 hours at monthly intervals from June through September, 1970. Zooplankton and macrobenthos were sampled monthly from stations at 2, 3 and 5 m depths in the heated-water discharge area in the harbor.A thermal plume was present during each sampling series. The extent of the plume varied and was capable of charging directions within short periods of time. Maximum recorded temperature in the plume was 28 C, but the maximum difference in temperature between plume and control area was only 4 C.Zooplankton species diversity was similar between experimental and control areas. Higher zooplankton densities were found in the harbor area but did not appear to be plume related. Benthos populations were lower in the experimental area compared to the control area. Any effect of the heated water in the harbor area was complicated due to the probable but unknown influence of water quality from Trail Creek.Ball State UniversityMuncie, IN 47306
| Identifer | oai:union.ndltd.org:BSU/oai:cardinalscholar.bsu.edu:handle/181276 |
| Date | 03 June 2011 |
| Creators | Cochran, Michael C. |
| Contributors | McComish, Thomas S. |
| Source Sets | Ball State University |
| Detected Language | English |
| Format | viii, 94 leaves : ill. ; 28 cm. |
| Source | Virtual Press |
| Coverage | nl----- |
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