COMMUNITY STRUCTURE AND HABITAT PREFERENCES OF AQUATIC
MACROINVERTEBRATES IN THE TAHQUAMENON AND PERE
MARQUETTE RIVERS


Christopher J. Frederick
School of Science and Natural Resources
Lake Superior State University
Sault Ste. Marie, MI 49783

Abstract

	In the fall of 1995, I conducted a study on the riffle areas of the Tahquamenon
River and the South Branch of the Pere Marquette River. Three sites on each river were
chosen and partitioned into twelve equal sections. Four sections from each site were then
examined for physical attributes and aquatic macroinvertebrate commurnty structure. The
Tahquamenon River had a significantly higher density of Ephemeroptera and total EPTs
(Ephemeroptera, Plecoptera, and Trichoptera) per site than the South Branch of the Pere
Marquette River. Macroinvertebrate abundance at these locations was directly related to
water velocity and inversely related to depth.


Selected References

Borror,	Donald J., and White, Richard E. 1970. A Field Guide to the Insects of America
North of Mexico. Houghton Mifflin Company, Boston, Massachusetts, USA.

McCafferty, W.P. 1983. Aquatic Entomology: The Fisherman's and Ecologist's
Illustrated Guide to Insects and Their Relatives. Jones and Bartlett Publishers,
INC., Boston, Massachusetts, USA.