Collin Eagles-Smith
I am a Research Ecologist with the USGS Forest and Rangeland Ecosystem Science Center in Corvallis, Oregon. My research focuses on the interactions among ecological processes, contaminant bioaccumulation, and effects on wild populations.
My work specifically focuses on (1) the ecological factors regulating contaminant bioaccumulation and trophic transfer, with an emphasis on food web processes and contaminant cycling, (2) land use practices and ecosystem restoration effects on contaminant cycling through food webs, and (3) the sublethal effects of contaminants on individuals and contaminant-induced impairment to reproduction in the wild. My research is broadly applied across taxa - primarily fish and waterbirds, and habitat types - including lakes, freshwater wetlands, agricultural fields, and estuarine habitats.
Professional Experience
2010-present: Supervisory Research Ecologist, USGS Forest and Rangeland Ecosystem Science Center, Corvallis, OR
2007-2010: Wildlife Biologist, USGS Western Ecological Research Center, Davis, CA
2003-2007: Biologist, U.S. Fish and Wildlife Service, Sacramento, CA
Education and Certifications
Ph.D., Ecology, University of California, Davis, CA (2006)
B.S., Environmental Resource Sciences - Magna Cum Laude, University of California, Davis, CA (2000)
Science and Products
Contaminant Ecology Research Team (FRESC)
Contaminant Bioaccumulation through Food Webs
Body Symmetry in Forster's Terns Related to Mercury Exposure
New Method Improves Measurement of Bullet Fragments in Culled Varmints
Synthesis of Mercury Distribution and Bioaccumulation Across Western North America
Mercury in Fish from 21 National Parks in the West
Mercury cycling, bioaccumulation, and risk across western North America: a landscape scale synthesis linking long-term datasets
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Total mercury and methylmercury in biota from Cottage Grove Reservoir, Coast Fork Willamette River, and additional reservoirs in Oregon (ver. 2.0, February 2024)
Survival, growth, behavior and mercury concentrations of mayflies exposed to elevated dietary methylmercury and aqueous selenium
Anticoagulant rodenticide concentrations in blood and tissue of California condors and turkey vultures (ver. 2.0, May 2023)
Biomass and methylmercury concentrations in biweekly biological samples from Brownlee and Oxbow Reservoir outflows, Snake River Hells Canyon Complex (Idaho-Oregon), 2018-2019
Mercury in fishes from Clear Lake, California, 2019 and 2020 (ver. 2.0, February 2022)
Total Mercury Concentrations in Dragonfly Larvae from U.S. National Parks (ver. 8.0, December 2022)
Mercury Concentrations and Stable Isotopes in Riparian Songbirds and Invertebrates from the Willamette River, Oregon, 2013
Mercury Concentrations and Mercury Isotopes in Salmonid fishes from the Snake River and tributaries in Idaho and Oregon, 2015 and 2019 (ver. 2.0, February 2021)
Mercury Bioaccumulation in US National Parks Using Dragonfly Larvae as Biosentinels, 2009-2018
Total Mercury Concentrations in Smallmouth Bass from Chesapeake Bay Tributaries, USA Dataset, 2013-2017
Fish tissue mercury and selenium concentrations in Upper Colorado River Basin: 1962-2011
Trask River Watershed Study Area Forestry Bioaccumulation Dataset, 2011-2015
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
In-reservoir physical processes modulate aqueous and biological methylmercury export from a seasonally anoxic reservoir
Collateral damage: Anticoagulant rodenticides pose threats to California condors
Using carbon, nitrogen, and mercury isotope values to distinguish mercury sources to Alaskan lake trout
What are the toxicological effects of mercury in Arctic biota?
Mercury exposure of tidal marsh songbirds in the northeastern United States and its association with nest survival
Lethal impacts of selenium counterbalance the potential reduction in mercury bioaccumulation for freshwater organisms☆
Small mammal shooting as a conduit for lead exposure in avian scavengers
Metal accumulation varies with life history, size, and development of larval amphibians
Differential reliance on aquatic prey subsidies influences mercury exposure in riparian arachnids and songbirds
Demethylation of methylmercury in bird, fish, and earthworm
Isotope fractionation from In Vivo methylmercury detoxification in waterbirds
Examining historical mercury sources in the Saint Louis River estuary: How legacy contamination influences biological mercury levels in Great Lakes coastal regions
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.
To request an interview, contact fresc_outreach@usgs.gov or call (541) 750-1030.
Science and Products
Contaminant Ecology Research Team (FRESC)
Contaminant Bioaccumulation through Food Webs
Body Symmetry in Forster's Terns Related to Mercury Exposure
New Method Improves Measurement of Bullet Fragments in Culled Varmints
Synthesis of Mercury Distribution and Bioaccumulation Across Western North America
Mercury in Fish from 21 National Parks in the West
Mercury cycling, bioaccumulation, and risk across western North America: a landscape scale synthesis linking long-term datasets
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Total mercury and methylmercury in biota from Cottage Grove Reservoir, Coast Fork Willamette River, and additional reservoirs in Oregon (ver. 2.0, February 2024)
Survival, growth, behavior and mercury concentrations of mayflies exposed to elevated dietary methylmercury and aqueous selenium
Anticoagulant rodenticide concentrations in blood and tissue of California condors and turkey vultures (ver. 2.0, May 2023)
Biomass and methylmercury concentrations in biweekly biological samples from Brownlee and Oxbow Reservoir outflows, Snake River Hells Canyon Complex (Idaho-Oregon), 2018-2019
Mercury in fishes from Clear Lake, California, 2019 and 2020 (ver. 2.0, February 2022)
Total Mercury Concentrations in Dragonfly Larvae from U.S. National Parks (ver. 8.0, December 2022)
Mercury Concentrations and Stable Isotopes in Riparian Songbirds and Invertebrates from the Willamette River, Oregon, 2013
Mercury Concentrations and Mercury Isotopes in Salmonid fishes from the Snake River and tributaries in Idaho and Oregon, 2015 and 2019 (ver. 2.0, February 2021)
Mercury Bioaccumulation in US National Parks Using Dragonfly Larvae as Biosentinels, 2009-2018
Total Mercury Concentrations in Smallmouth Bass from Chesapeake Bay Tributaries, USA Dataset, 2013-2017
Fish tissue mercury and selenium concentrations in Upper Colorado River Basin: 1962-2011
Trask River Watershed Study Area Forestry Bioaccumulation Dataset, 2011-2015
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
In-reservoir physical processes modulate aqueous and biological methylmercury export from a seasonally anoxic reservoir
Collateral damage: Anticoagulant rodenticides pose threats to California condors
Using carbon, nitrogen, and mercury isotope values to distinguish mercury sources to Alaskan lake trout
What are the toxicological effects of mercury in Arctic biota?
Mercury exposure of tidal marsh songbirds in the northeastern United States and its association with nest survival
Lethal impacts of selenium counterbalance the potential reduction in mercury bioaccumulation for freshwater organisms☆
Small mammal shooting as a conduit for lead exposure in avian scavengers
Metal accumulation varies with life history, size, and development of larval amphibians
Differential reliance on aquatic prey subsidies influences mercury exposure in riparian arachnids and songbirds
Demethylation of methylmercury in bird, fish, and earthworm
Isotope fractionation from In Vivo methylmercury detoxification in waterbirds
Examining historical mercury sources in the Saint Louis River estuary: How legacy contamination influences biological mercury levels in Great Lakes coastal regions
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.
To request an interview, contact fresc_outreach@usgs.gov or call (541) 750-1030.