Entomology Commons^™

Reevaluating Abrupt Biological Discontinuity In A Small Michigan (Usa) Stream – Differences In The Organic Biomass Of Aquatic Macroinvertebrate Functional Feeding Groups Based On Benthic And Terrestrial Habitat, David C. Houghton, Danae Sollie, Daniel Votel, Elizabeth Potwardowski

The Great Lakes Entomologist

To examine the effects of habitat and benthic substrate differences on macroinvertebrate assemblages along a single continuum, we tested three sites along a small northern Lower Michigan stream over a four-year period. Terrestrial habitat along the stream abruptly changed from a cedar forest, to an open meadow, to a hardwood forest within a 1.4 km reach. Reflecting these changes, overhead canopy coverage and in-stream woody debris were higher at the two forested sites, whereas the organic biomass of periphyton was higher at the meadow site. The meadow site also had faster stream velocity and a greater volume of coarse benthic …