Erin Muths, PhD
Dr. Erin Muths is a Research Zoologist at the Fort Collins Science Center who specializes in amphibian demography, disease ecology and conservation.
Dr. Muths holds a doctorate in Zoology from the University of Queensland, Australia. Since joining the USGS in 1995, she has studied amphibians in Colorado and around the world. Dr. Muths specializes in amphibian demography, disease ecology and conservation. Current research projects include reintroductions of boreal toads in Rocky Mountain National Park, demography of chorus frog and boreal toad populations in Colorado and Wyoming, and salamander disease and occurrence in the desert southwest and Mexico. She is on several graduate student committees at Colorado State University, the University of Colorado and at the CCMB Laboratory for Conservation of Endangered Species in Hyderabad, India.
Professional Experience
U.S. Geological Survey - Biological Resources Division Fort Collins Science Center, Fort Collins, CO, April 1995 - present
University of Queensland Brisbane, Australia; Southwest Queensland, Australia, Ph.D. research, June 1991 - January 1995
Archbold Biological Station Lake Placid, FL, Research Intern, October 1990 - March 1991
Kansas State University, Division of Biology Manhattan, KS, Master's Research, Research Assistant, August 1988 - May 1990
Smithsonian Institution, Conservation Research Center Front Royal, VA, Intern, December 1987 - March 1988
Affiliations and Memberships*
USGS Amphibian Research and Monitoring Initiative - Principle Investigator, Southern Rocky Mountains, 2000 - present
The Society for Conservation Biology, 1989 – 2011
The American Society of Mammalogists, 1994 – 2002
Colorado Boreal Toad Recovery Team, 1996 – present
Society for Northwestern Vertebrate Biology 1997 – 2007
Research Associate – Denver Zoological Foundation, 1998 – present
Partners in Amphibian and Reptile Conservation, 1999 – present; SW PARC – Steering Committee, 2008 – 2011
Society for the Study of Amphibians and Reptiles, 2000 – 2014; representative to joint Herpetological Education Committee, 2017 – 2020; Committee chair 2020
Co-Editor, Journal of Herpetology, 2010 – 2015; Section Editor, Journal of Herpetology, 2014 – present
American Society of Ichthyologists & Herpetologists, 2002 – present
Herpetologists’ League 2007 – present; Executive Council 2007 – 2011; Chair, EE Williams Research Grant Committee, 2009-2010
Science and Products
A Framework for Guiding Management Decisions for Amphibians in an Uncertain Future
Modeling Colonization of a Population of Chiricahua Leopard Frogs
Amphibian Chytrid Fungus Sampling in Arizona and Mexico
Species Conservation
Amphibian Research and Monitoring Initiative: Rocky Mountain Region
Elucidating mechanisms underlying amphibian declines in North America using hierarchical spatial models
Current and future hydrology and occupancy predictions for boreal toads (Anaxyrus boreas boreas) in the Southern Rocky Mountains Current and future hydrology and occupancy predictions for boreal toads (Anaxyrus boreas boreas) in the Southern Rocky Mountains
Data on tiger salamander body mass, behavioral activity, and insecticide residues Data on tiger salamander body mass, behavioral activity, and insecticide residues
Amphibian (chorus frog, wood frog, tiger salamander) surveys in Rocky Mountain National Park (1986-2022) Amphibian (chorus frog, wood frog, tiger salamander) surveys in Rocky Mountain National Park (1986-2022)
Reduced representation sequencing and genotyping of Arizona Toads (Anaxyrus microscaphus) from the southwestern United States Reduced representation sequencing and genotyping of Arizona Toads (Anaxyrus microscaphus) from the southwestern United States
Mercury concentrations in amphibian tissues across the United States, 2016-2021 Mercury concentrations in amphibian tissues across the United States, 2016-2021
Total mercury, methylmercury, and isotopic composition in various life stages of boreal chorus frogs (Pseudacris maculata) at two subalpine ponds in the Rocky Mountains, CO, USA, 2015 Total mercury, methylmercury, and isotopic composition in various life stages of boreal chorus frogs (Pseudacris maculata) at two subalpine ponds in the Rocky Mountains, CO, USA, 2015
Handling times: tagging vs photos, Boreal toads in WY/CO 2020 Handling times: tagging vs photos, Boreal toads in WY/CO 2020
Chorus frog density and population growth, Cameron Pass, Colorado, 1986-2020 Chorus frog density and population growth, Cameron Pass, Colorado, 1986-2020
Boreal toad metamorph capture, recapture and covariates data, Colorado 2017-2018 Boreal toad metamorph capture, recapture and covariates data, Colorado 2017-2018
Capture-recapture, disease and covariate data for boreal toads from Blackrock Wyoming 2019 Capture-recapture, disease and covariate data for boreal toads from Blackrock Wyoming 2019
Demographic data from two chorus frog populations in Colorado Demographic data from two chorus frog populations in Colorado
Amphibian capture mark-recapture Amphibian capture mark-recapture
Amphibian diversity of the western Colorado canyonlands including potential threats from nonnative bullfrogs and disease Amphibian diversity of the western Colorado canyonlands including potential threats from nonnative bullfrogs and disease
Independent and interactive effects of disease and methylmercury on demographic rates across multiple amphibian populations Independent and interactive effects of disease and methylmercury on demographic rates across multiple amphibian populations
Assessing potential collateral effects on amphibians from insecticide applications for flea control and plague mitigation Assessing potential collateral effects on amphibians from insecticide applications for flea control and plague mitigation
Assessing the effects of climate and visitor use on amphibian occupancy in a protected landscape with long-term data Assessing the effects of climate and visitor use on amphibian occupancy in a protected landscape with long-term data
Pan-amphibia distribution of the fungal parasite Batrachochytrium dendrobatidis varies with species and temperature Pan-amphibia distribution of the fungal parasite Batrachochytrium dendrobatidis varies with species and temperature
Unburned habitat essential for amphibian breeding persistence following wildfire Unburned habitat essential for amphibian breeding persistence following wildfire
Quantifying intraspecific variation in host resistance ad tolerance to a lethal pathogen Quantifying intraspecific variation in host resistance ad tolerance to a lethal pathogen
Genetic Connectivity in the Arizona toad (Anaxyrus microscaphus): implications for conservation of a stream dwelling amphibian in the arid Southwestern U.S. Genetic Connectivity in the Arizona toad (Anaxyrus microscaphus): implications for conservation of a stream dwelling amphibian in the arid Southwestern U.S.
Broad-scale assessment of methylmercury in adult amphibians Broad-scale assessment of methylmercury in adult amphibians
Conservation genomics of an endangered montane amphibian reveals low population structure, low genomic diversity and selection pressure from disease Conservation genomics of an endangered montane amphibian reveals low population structure, low genomic diversity and selection pressure from disease
Priority research needs to inform amphibian conservation in the Anthropocene Priority research needs to inform amphibian conservation in the Anthropocene
Successful eradication of invasive American bullfrogs leads to coextirpation of emerging pathogens Successful eradication of invasive American bullfrogs leads to coextirpation of emerging pathogens
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.
A decision support tool for assessing current and future occupancy trends for boreal toads in the Southern Rocky Mountains A decision support tool for assessing current and future occupancy trends for boreal toads in the Southern Rocky Mountains
Science and Products
A Framework for Guiding Management Decisions for Amphibians in an Uncertain Future
Modeling Colonization of a Population of Chiricahua Leopard Frogs
Amphibian Chytrid Fungus Sampling in Arizona and Mexico
Species Conservation
Amphibian Research and Monitoring Initiative: Rocky Mountain Region
Elucidating mechanisms underlying amphibian declines in North America using hierarchical spatial models
Current and future hydrology and occupancy predictions for boreal toads (Anaxyrus boreas boreas) in the Southern Rocky Mountains Current and future hydrology and occupancy predictions for boreal toads (Anaxyrus boreas boreas) in the Southern Rocky Mountains
Data on tiger salamander body mass, behavioral activity, and insecticide residues Data on tiger salamander body mass, behavioral activity, and insecticide residues
Amphibian (chorus frog, wood frog, tiger salamander) surveys in Rocky Mountain National Park (1986-2022) Amphibian (chorus frog, wood frog, tiger salamander) surveys in Rocky Mountain National Park (1986-2022)
Reduced representation sequencing and genotyping of Arizona Toads (Anaxyrus microscaphus) from the southwestern United States Reduced representation sequencing and genotyping of Arizona Toads (Anaxyrus microscaphus) from the southwestern United States
Mercury concentrations in amphibian tissues across the United States, 2016-2021 Mercury concentrations in amphibian tissues across the United States, 2016-2021
Total mercury, methylmercury, and isotopic composition in various life stages of boreal chorus frogs (Pseudacris maculata) at two subalpine ponds in the Rocky Mountains, CO, USA, 2015 Total mercury, methylmercury, and isotopic composition in various life stages of boreal chorus frogs (Pseudacris maculata) at two subalpine ponds in the Rocky Mountains, CO, USA, 2015
Handling times: tagging vs photos, Boreal toads in WY/CO 2020 Handling times: tagging vs photos, Boreal toads in WY/CO 2020
Chorus frog density and population growth, Cameron Pass, Colorado, 1986-2020 Chorus frog density and population growth, Cameron Pass, Colorado, 1986-2020
Boreal toad metamorph capture, recapture and covariates data, Colorado 2017-2018 Boreal toad metamorph capture, recapture and covariates data, Colorado 2017-2018
Capture-recapture, disease and covariate data for boreal toads from Blackrock Wyoming 2019 Capture-recapture, disease and covariate data for boreal toads from Blackrock Wyoming 2019
Demographic data from two chorus frog populations in Colorado Demographic data from two chorus frog populations in Colorado
Amphibian capture mark-recapture Amphibian capture mark-recapture
Amphibian diversity of the western Colorado canyonlands including potential threats from nonnative bullfrogs and disease Amphibian diversity of the western Colorado canyonlands including potential threats from nonnative bullfrogs and disease
Independent and interactive effects of disease and methylmercury on demographic rates across multiple amphibian populations Independent and interactive effects of disease and methylmercury on demographic rates across multiple amphibian populations
Assessing potential collateral effects on amphibians from insecticide applications for flea control and plague mitigation Assessing potential collateral effects on amphibians from insecticide applications for flea control and plague mitigation
Assessing the effects of climate and visitor use on amphibian occupancy in a protected landscape with long-term data Assessing the effects of climate and visitor use on amphibian occupancy in a protected landscape with long-term data
Pan-amphibia distribution of the fungal parasite Batrachochytrium dendrobatidis varies with species and temperature Pan-amphibia distribution of the fungal parasite Batrachochytrium dendrobatidis varies with species and temperature
Unburned habitat essential for amphibian breeding persistence following wildfire Unburned habitat essential for amphibian breeding persistence following wildfire
Quantifying intraspecific variation in host resistance ad tolerance to a lethal pathogen Quantifying intraspecific variation in host resistance ad tolerance to a lethal pathogen
Genetic Connectivity in the Arizona toad (Anaxyrus microscaphus): implications for conservation of a stream dwelling amphibian in the arid Southwestern U.S. Genetic Connectivity in the Arizona toad (Anaxyrus microscaphus): implications for conservation of a stream dwelling amphibian in the arid Southwestern U.S.
Broad-scale assessment of methylmercury in adult amphibians Broad-scale assessment of methylmercury in adult amphibians
Conservation genomics of an endangered montane amphibian reveals low population structure, low genomic diversity and selection pressure from disease Conservation genomics of an endangered montane amphibian reveals low population structure, low genomic diversity and selection pressure from disease
Priority research needs to inform amphibian conservation in the Anthropocene Priority research needs to inform amphibian conservation in the Anthropocene
Successful eradication of invasive American bullfrogs leads to coextirpation of emerging pathogens Successful eradication of invasive American bullfrogs leads to coextirpation of emerging pathogens
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.
A decision support tool for assessing current and future occupancy trends for boreal toads in the Southern Rocky Mountains A decision support tool for assessing current and future occupancy trends for boreal toads in the Southern Rocky Mountains
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government