Jeffrey D. Muehlbauer, PhD
Unit Leader - Alaska Cooperative Fish and Wildlife Research Unit
Jeffrey's research focus is on linking hydrological and geomorphic conditions in rivers to the structure of aquatic communities. His work focuses on aquatic insects and macroinvertebrates, salmonid fishes and feeding ecology, and freshwater and riparian food webs. He is involved in basic and applied research in a variety of river ecosystems worldwide, including dam removal in Arizona.
His current role at USGS is at the Alaska Cooperative Fisheries and Wildlife Research Unit as the Unit Leader, in cooperation with the University of Alaska Fairbanks and partners. Jeffrey teaches courses in aquatic food web ecology and stream ecology. Jeff is a river and stream ecologist who specializes in macroinvertebrate communities, fisheries, and food webs. His research is focused on linking hydrological and geomorphic conditions in rivers to the structure of aquatic communities.
He is involved in wetland mitigation in North Carolina, food web studies on the Danube River in Austria/Hungary/Serbia and glacially-fed rivers in Italy, and large dam impacts on the Colorado River and on the impacts of climate change, mining, and other stressors in Alaskan streams and rivers.
Professional Experience
Unit Leader - Alaska Cooperative Fish and Wildlife Research Unit
Assistant Unit Leader - Alaska Cooperative Fish and Wildlife Research Unit
USGS Grand Canyon Monitoring and Research Center
Education and Certifications
BS - Northern Arizona University
MS - University of North Carolina
PhD - University of North Carolina
Science and Products
Community Science in Grand Canyon
Invertebrate Drift Downstream of Colorado River Basin Dams
Insect Drift
Aquatic Insects
Invertebrate data (2012-2021) from the Colorado River in Grand Canyon and flow data (1921-2021) from the Lees Ferry gage (09380000) on the Colorado River near Page, AZ
Gross primary production estimates and associated light, sediment, and water quality data from the Colorado River below Glen Canyon Dam
Population genetic analysis of three aquatic macroinvertebrate species from samples in Grand Canyon (Arizona, USA) tributaries and nearby reference streams, 2016-2021
Benthic macroinvertebrate tailwater data in the Colorado River Basin, 2013 & 2015
Carbon, nitrogen, and phosphorus content of adult emergent Diptera before and after a fire-storm sequence in the Colorado River near Shinumo Creek, Grand Canyon, AZ
Stream Drift Sampling in Arizona, 2014Data
Angel Lichen Moth Abundance and Morphology Data, Grand Canyon, AZ, 2012
Flow management for hydropower extirpates aquatic insects, undermining river food websData
U.S. Geological Survey Grand Canyon Monitoring and Research Center: Proceedings of the fiscal year 2023 annual reporting meeting to the Glen Canyon Dam Adaptive Management Program
Reimagining large river management using the Resist–Accept–Direct (RAD) framework in the Upper Mississippi River
Colorado River Basin
Insectivorous bat foraging tracks the availability of aquatic flies (Diptera)
Little bugs, big data, and Colorado River adaptive management: Preliminary findings from the ongoing bug flow experiment at Glen Canyon Dam
Experimental reductions in sub-daily flow fluctuations increased gross primary productivity for 425 river kilometers downstream
Population connectivity of aquatic insects in a dam-regulated, desert river
Applied citizen science in freshwater research
Hydropeaking intensity and dam proximity limit aquatic invertebrate diversity in the Colorado River Basin
Variables affecting resource subsidies from streams and rivers to land and their susceptibility to global change stressors
Net-spinning caddisfly distribution in large regulated rivers
Spatial population structure of a widespread aquatic insect in the Colorado River Basin: Evidence for a Hydropsyche oslari species complex
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Community Science in Grand Canyon
Invertebrate Drift Downstream of Colorado River Basin Dams
Insect Drift
Aquatic Insects
Invertebrate data (2012-2021) from the Colorado River in Grand Canyon and flow data (1921-2021) from the Lees Ferry gage (09380000) on the Colorado River near Page, AZ
Gross primary production estimates and associated light, sediment, and water quality data from the Colorado River below Glen Canyon Dam
Population genetic analysis of three aquatic macroinvertebrate species from samples in Grand Canyon (Arizona, USA) tributaries and nearby reference streams, 2016-2021
Benthic macroinvertebrate tailwater data in the Colorado River Basin, 2013 & 2015
Carbon, nitrogen, and phosphorus content of adult emergent Diptera before and after a fire-storm sequence in the Colorado River near Shinumo Creek, Grand Canyon, AZ
Stream Drift Sampling in Arizona, 2014Data
Angel Lichen Moth Abundance and Morphology Data, Grand Canyon, AZ, 2012
Flow management for hydropower extirpates aquatic insects, undermining river food websData
U.S. Geological Survey Grand Canyon Monitoring and Research Center: Proceedings of the fiscal year 2023 annual reporting meeting to the Glen Canyon Dam Adaptive Management Program
Reimagining large river management using the Resist–Accept–Direct (RAD) framework in the Upper Mississippi River
Colorado River Basin
Insectivorous bat foraging tracks the availability of aquatic flies (Diptera)
Little bugs, big data, and Colorado River adaptive management: Preliminary findings from the ongoing bug flow experiment at Glen Canyon Dam
Experimental reductions in sub-daily flow fluctuations increased gross primary productivity for 425 river kilometers downstream
Population connectivity of aquatic insects in a dam-regulated, desert river
Applied citizen science in freshwater research
Hydropeaking intensity and dam proximity limit aquatic invertebrate diversity in the Colorado River Basin
Variables affecting resource subsidies from streams and rivers to land and their susceptibility to global change stressors
Net-spinning caddisfly distribution in large regulated rivers
Spatial population structure of a widespread aquatic insect in the Colorado River Basin: Evidence for a Hydropsyche oslari species complex
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.