Cows In Stream Web

Effects of human perturbations on macroinvertebrates

Several studies have been conducted during the last 5 years on the effects of human perturbations such as road salt, cattle grazing, elevated CO2 levels, sedimentation, and industrial effluents on macroinvertebrates. Publications from these studies are listed below.

Strand, R. M., D. A. Herms, M. G. Kaufman, M. E. Kubiske, W. J. Mattson, E. D. Walker, K. S. Pregitzer, and R. W. Merritt. 1996. Effects of elevated CO2 and shade on the decomposition of senesced tree foliage: Impacts on the growth and survival treehole mosquitoes, pp. 101-110. In: J. Hom, R. Birdsey, and K. O'Brian (eds). Proc. 1995 Mtg. Northern Global Change Progr., USDA, Northeast Forest Expt. Stat., GTR NE-214.

Kaufman, M. G., R. M. Strand, M. E. Kubiske, W. J. Mattson, D. A. Herms, E. D. Walker, K. S. Pregitzer, and R. W. Merritt. 1996. Effects of elevated CO2 and shade on the decomposition of senesced tree foliage: Impacts on microbial activity, pp. 89-100. In: J. Hom, R. Birdsey, and K. O'Brian (eds). Proc. 1995 Mtg. Northern Global Change Progr., USDA, Northeast Forest Expt. Stat., GTR NE-214.

Strand, R. M. and R. W. Merritt. 1998. Effects of episodic sedimentation on the net-spinning caddisflies Hydropsyche betteni and Ceratopsyche sparna (Trichoptera: Hydropsychidae). Environ. Pollut. 98: 129-34.

Strand, M. and R. W. Merritt. 1999. Impacts of cattle grazing activities on stream insect communities and the riverine environment. American Entomologist 45: 13-29.

Road Salt

Salt On Pavement

Road salt

Strand, M. D. A. Herms, M. P. Ayres, M. E. Kubiske, M. G. Kaufman, E. D. Walker, K S. Pregitzer, and R. W. Merritt. 1999. Effects of atmospheric CO2, light availability and tree species on the quality of leaf detritus as a source for treehole mosquitoes. Oikos 84: 277-283.

Blasius, B. J. and R. W. Merritt. 2002. Field and laboratory investigations on the effects of road salt (NaCl) on stream macroinvertebrate communities. Environmental Pollution 120:219-231

Nedeau, E. J., R. W. Merritt, and M. G. Kaufman. 2003. The effect of an industrial effluent on an urban stream benthic community: water quality vs. habitat quality. Environmental Pollution 123: 1-13.

Benbow, M. E. and R. W. Merritt. 2004. Road salt toxicity of Michigan wetland macroinvertebrates under different testing conditions. Wetlands 24: 68-76.

Benbow, M. E, R.W. Merritt. 2005. Road Salt, pp. 319-325. In: Water Encyclopedia: Water Quality and Resource Management. Lehr, J, J Keeley and J. Lehr (Eds.). John Wiley & Sons, Inc. 717 p.


Rollins, S. L., M. Eric Benbow, and R. W. Merritt. 2006. Quantifying the potential effect of road salt on wetland phytoplankton production using a Bayesian approach to risk characterization. (MS submitted)

Salt Mesocosm Study Web

Scott Rollins