Our Team



david rees

David Rees - Owner / Aquatic Biologist

David received a B.S. and M.S. from Colorado State University where he studied fishery biology and ecotoxicology, respectively. He has more than 20 years experience in macroinvertebrate identification, data analysis, and report preparation. He is familiar with EPA protocols and more than 100 indices (metrics) using algae and benthic macroinvertebrates to evaluate aquatic conditions. David has extensive experience working with private entities, state agencies, and federal agencies including the USDA Forest Service, Colorado Division of Wildlife, U.S. Fish and Wildlife Service, and the Bureau of Reclamation. He is a member of the Society for Freshwater Science (SFS) and a certified taxonomist receiving a score of 100% on the NABS certification exams for Western EPT taxa and Chironomidae. David has been an author or co-author on more than 50 technical reports and publications. He has project experience in ten western states and conducted benthic macroinvertebrate studies on more than 60 Colorado rivers and streams alone.


Elizabeth Shelley - Biologist



erica ricci

Erica Ricci - Data Specialist

Erica received a B.S. in Biology with Environmental Resource Management from Chadron State College, which included extensive work in entomology, limnology, ecology, and botany. While working on her B.S. degree, Erica completed taxonomic research on the plant Order Dipsacales. Her work is expected to be published in the next edition of South Dakota Flora. She has also presented results from her research at the 2012 Black Hills Area Botanist & Ecologist Workshop and has assisted the U.S. National Forest Service in locating rare plant species communities. Now, at Timberline Aquatics, Inc., Erica's responsibilities include sample processing, data entry, and quality control. She has sorted and processed benthic macroinvertebrate samples from multiple watersheds in Colorado and is familiar with family level identifications for aquatic macroinvertebrates from the western U.S.


Michelle Fillion - Laboratory Technician



Dana Musto - Laboratory Technician