The objectives of this report are as follows. First, species composition, abundance, and distribution patterns during zooplankton surveillance cruises conducted in Lake Huron including the North Channel and Georgian Bay are discussed. The presence of certain species and the absence of others provide preliminary information on water quality. Standing stock data provide a crude estimate of secondary production, particularly when compared against other regions of Lake Huron or other Great Lakes.The second and third objectives of the report are the description, by statistical techniques, of the relationships between the abundance of individual zooplankton taxa and zooplankton community structure and the physical-chemical characteristics of the environment. Phytoplankton data were not available at the time of this report writing and consequently could not be included in analyses. Statistically significant relationships, while not necessarily indicating causal links, may suggest pathways.

"Under contract with United States Environmental Protection Agency, Great Lakes National Program Office, Region V. Grants R005510010, R005510020, and R005510030." Project officer: David C. Rockwell. Appendix (one microfiche)--in pocket at back of vol. Includes bibliographical references (pages 144-149). "September 1983."