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Lawrence Gray (Biology): Stream Ecology
My research interest is in the ecology of streams and rivers with special emphasis on macroinvertebrate communities. I have studied streams in Kansas, Arizona, Colorado, Wyoming, and Utah from perspectives of basic research in secondary production, succession and nutrient cycling as well as applied research in effects of sedimentation and urban runoff on stream ecosystems. Current research involves sampling of macroinvertebrates for the Utah Division of Water Quality in the Spanish Fork River drainage basin in Utah County and the Weber River basin in Summit County, Utah, as part of ongoing monitoring of water quality for TMDL assessment. Also with the Utah Division of Water Quality, I am examining macroinvertebrates at 30+ sites in the wetlands surrounding the Great Salt Lake to determine changes in community composition in response to nutrient enrichment and salinity gradients. I have ongoing sampling in the Spanish Fork River basin to evaluate recovery of stream habitats and macroinvertebrate communities after stream rehabilitation. Sites include Thistle Creek and the mainstem of the Spanish Fork River.

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