Habitat associations and effects of urbanization on macroinvertebrates of a small, high-plains stream

We described the relations between abundance of macroinvertebrates and several habitat variables in Crow Creek within F.E. Warren Air Force Base, Laramie County, Wyoming. Water velocity and longitudinal location showed the highest numbers of significant correlations with abundance of macroinvertebrate taxa. Changes in the macroinvertebrate community with changes in longitudinal location appeared to result from increasing urbanization with downstream movement. Caenis lattipennis, Ceratopogonidae, and Dubiraphia sp. were rare in the downstream portion of the study reach that has received substantial human disturbance.