Clint Muhlfeld, Ph.D.
I am a Research Aquatic Ecologist for the USGS Northern Rocky Mountain Science Center stationed in Glacier National Park.
Research interests
I specialize in aquatic ecology, fisheries biology, ecohydrology, and conservation biology. My research focuses on understanding the complex interactions between aquatic species and their environments to guide conservation and management of freshwater fisheries and ecosystems. I focus on how human-driven stressors—such as drought, invasive species, and habitat degradation—impact native trout, valuable recreational fisheries, and freshwater ecosystems, particularly in the northern Rocky Mountains of the United States.
My research addresses various scientific and conservation issues, including:
- Predicting the impacts of environmental changes on native trout and their freshwater habitats
- Evaluating the effects of invasive species on native fishes and ecosystem health
- Conducting ecohydrological assessments of drought and water management impacts
- Investigating life history and genetic diversity of native salmonids
- Assessing the status, threats, and conservation of threatened species to inform management needs
I am passionate about multidisciplinary science collaboration and enjoy mentoring graduate students in fisheries and freshwater ecology. I also contribute to regional, national, and international science teams focused on transboundary river management and the sustainable use of freshwater resources. My ultimate goal is to conserve native species and ecosystems for future generations through research-informed management and education.
Education and Certifications
Ph.D. 2008. Fish and Wildlife Biology, Montana State University, Bozeman
M.S. 1999. Fishery Resources, University of Idaho, Moscow
B.S. 1994. Aquatic Biology, University of Montana, Missoula; University of Maine, Orono
Science and Products
Thermal tolerance of meltwater stonefly Lednia tumana nymphs from an alpine stream in Waterton–Glacier International Peace Park, Montana, USA Thermal tolerance of meltwater stonefly Lednia tumana nymphs from an alpine stream in Waterton–Glacier International Peace Park, Montana, USA
Estimating thermal regimes of bull trout and assessing the potential effects of climate warming on critical habitats Estimating thermal regimes of bull trout and assessing the potential effects of climate warming on critical habitats
Factors influencing the distribution of native bull trout and westslope cutthroat trout in western Glacier National Park, Montana Factors influencing the distribution of native bull trout and westslope cutthroat trout in western Glacier National Park, Montana
Genomic patterns of introgression in rainbow and westslope cutthroat trout illuminated by overlapping paired-end RAD sequencing Genomic patterns of introgression in rainbow and westslope cutthroat trout illuminated by overlapping paired-end RAD sequencing
The past as prelude to the future for understanding 21st-century climate effects on Rocky Mountain Trout The past as prelude to the future for understanding 21st-century climate effects on Rocky Mountain Trout
Assessing the impacts of river regulation on native bull trout (Salvelinus confluentus) and westslope cutthroat trout (Oncorhynchus clarkii lewisi) habitats in the upper Flathead River, Montana, USA Assessing the impacts of river regulation on native bull trout (Salvelinus confluentus) and westslope cutthroat trout (Oncorhynchus clarkii lewisi) habitats in the upper Flathead River, Montana, USA
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
Thermal tolerance of meltwater stonefly Lednia tumana nymphs from an alpine stream in Waterton–Glacier International Peace Park, Montana, USA Thermal tolerance of meltwater stonefly Lednia tumana nymphs from an alpine stream in Waterton–Glacier International Peace Park, Montana, USA
Estimating thermal regimes of bull trout and assessing the potential effects of climate warming on critical habitats Estimating thermal regimes of bull trout and assessing the potential effects of climate warming on critical habitats
Factors influencing the distribution of native bull trout and westslope cutthroat trout in western Glacier National Park, Montana Factors influencing the distribution of native bull trout and westslope cutthroat trout in western Glacier National Park, Montana
Genomic patterns of introgression in rainbow and westslope cutthroat trout illuminated by overlapping paired-end RAD sequencing Genomic patterns of introgression in rainbow and westslope cutthroat trout illuminated by overlapping paired-end RAD sequencing
The past as prelude to the future for understanding 21st-century climate effects on Rocky Mountain Trout The past as prelude to the future for understanding 21st-century climate effects on Rocky Mountain Trout
Assessing the impacts of river regulation on native bull trout (Salvelinus confluentus) and westslope cutthroat trout (Oncorhynchus clarkii lewisi) habitats in the upper Flathead River, Montana, USA Assessing the impacts of river regulation on native bull trout (Salvelinus confluentus) and westslope cutthroat trout (Oncorhynchus clarkii lewisi) habitats in the upper Flathead River, Montana, USA
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.