Kelly Smalling
I am interested in the exposure and effects of contaminants including current-use pesticides and other endocrine active compounds on fish and wildlife with a focus on amphibian populations.
I am an environmental organic chemist who has been working with the USGS since 2004. My current research focuses on the occurrence, fate and effects of emerging contaminants including current-use pesticides in the environment. I am the lead for the Amphibian Research and Monitoring Initiative's Contaminants Project, the project coordinator of the "EDC effects on fish and wildlife in the Cheseapeake Bay Watershed" project through the Contaminants Biology Program, and a member of the Toxic Substances Hydrology Program's Pesticide Fate Research Team.
Education and Certifications
BS in Chemistry from the University of Alabama in Huntsville in 1999
MSPH in Environmental Health Science from the University of South Carolina in 2003
Science and Products
Pre-listing Science Support in the Northeast
Pilot Study Provides Information on Contaminant Exposure from Tap Water at Residential and Workplace Sites in the United States
Unique Methods Used to Understand Frog Exposure to Pesticides in Agricultural Settings
Emerging Contaminants and their Effects on Fish and Frogs
Point and Nonpoint Sources of Endocrine Disrupting Compounds and the Potential effects on Fish and Frogs in the New Jersey Pinelands
Pesticides and Amphibian Pathogens in Natural and Created Wetlands in the New Jersey Pinelands
Endocrine Disrupting Chemicals and Prevalence of Intersex in Fish Populations in New Jersey
Endocrine Disrupting Compounds in the Chesapeake Bay Watershed Science Team
Pesticides Common in California Estuary
Pesticides Found in Amphibians from Remote Areas in California
Mixtures of Pesticides Detected in Crab Embryos
Target-chemical concentrations and bioassay results for assessment of mixed-organic/inorganic chemical and biological exposures in Minneapolis/St Paul, Minnesota tapwater, August 2019
PFAS Reconnaissance Landscape Data
Images and Identifications of Wild Bees Collected in Eastern Iowa, 2019
Target-Chemical Concentrations and Microbiological Results for Assessment of Mixed Contaminant and Biological Exposures in Bottled Water, 2020
Pesticide residues in passive samplers and bee tissue from Conservation Reserve Program fields across an agricultural gradient in eastern Iowa, USA, 2019 (ver 2.0, October 2023)
Organic and inorganic constituents in surface water and native and non-native fish and frog health data collected from streams, impoundments and wetlands in the New Jersey Pinelands, 2017-2020 (ver. 1.1, August 2022)
Current-use pesticides, nutrients, chloride, and metals in ponds and stormwater basins of the New Jersey Pinelands, 2018-20
Target-Chemical Concentration Results for Assessment of Mixed-Organic/Inorganic Chemical and Biological Exposures in North Dakota and South Dakota Tapwater, 2019
Concentrations of organic and inorganic constituents in tapwater samples from California in 2020-21 (ver. 3.1, March 2024)
Current use pesticides in larval amphibian tissues, amphibian pathogen and wetland sediment screening data from three northeastern National Wildlife Refuges, 2013-2014
Metal concentrations in sediment and amphibian tissues from wetlands sampled across the United States
Pesticide concentrations in surface waters of the Sacramento Valley rice-growing regions, 2010
Density declines, richness increases, and composition shifts in stream macroinvertebrates
Predicted aquatic exposure effects from a national urban stormwater study
Energy-related wastewater contamination alters microbial communities of sediment, water, and amphibian skin
Improving understanding and coordination of science activities for PFAS in the Chesapeake watershed
Juxtaposition of intensive agriculture, vulnerable aquifers, and mixed chemical/microbial exposures in private-well tapwater in northeast Iowa
Occurrence of mixed organic and inorganic chemicals in groundwater and tapwater, town of Campbell, Wisconsin, 2021–22
Wild bee exposure to pesticides in conservation grasslands increases along an agricultural gradient: A tale of two sample types
Bottled water contaminant exposures and potential human effects
Estrogenic activity response to best management practice implementation in agricultural watersheds in the Chesapeake Bay watershed
Tapwater exposures, effects potential, and residential risk management in Northern Plains Nations
Potential health effects of contaminant mixtures from point and nonpoint sources on fish and frogs in the New Jersey Pinelands
Power analysis for detecting the effects of best management practices on reducing nitrogen and phosphorus fluxes to the Chesapeake Bay watershed, 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
Pre-listing Science Support in the Northeast
Pilot Study Provides Information on Contaminant Exposure from Tap Water at Residential and Workplace Sites in the United States
Unique Methods Used to Understand Frog Exposure to Pesticides in Agricultural Settings
Emerging Contaminants and their Effects on Fish and Frogs
Point and Nonpoint Sources of Endocrine Disrupting Compounds and the Potential effects on Fish and Frogs in the New Jersey Pinelands
Pesticides and Amphibian Pathogens in Natural and Created Wetlands in the New Jersey Pinelands
Endocrine Disrupting Chemicals and Prevalence of Intersex in Fish Populations in New Jersey
Endocrine Disrupting Compounds in the Chesapeake Bay Watershed Science Team
Pesticides Common in California Estuary
Pesticides Found in Amphibians from Remote Areas in California
Mixtures of Pesticides Detected in Crab Embryos
Target-chemical concentrations and bioassay results for assessment of mixed-organic/inorganic chemical and biological exposures in Minneapolis/St Paul, Minnesota tapwater, August 2019
PFAS Reconnaissance Landscape Data
Images and Identifications of Wild Bees Collected in Eastern Iowa, 2019
Target-Chemical Concentrations and Microbiological Results for Assessment of Mixed Contaminant and Biological Exposures in Bottled Water, 2020
Pesticide residues in passive samplers and bee tissue from Conservation Reserve Program fields across an agricultural gradient in eastern Iowa, USA, 2019 (ver 2.0, October 2023)
Organic and inorganic constituents in surface water and native and non-native fish and frog health data collected from streams, impoundments and wetlands in the New Jersey Pinelands, 2017-2020 (ver. 1.1, August 2022)
Current-use pesticides, nutrients, chloride, and metals in ponds and stormwater basins of the New Jersey Pinelands, 2018-20
Target-Chemical Concentration Results for Assessment of Mixed-Organic/Inorganic Chemical and Biological Exposures in North Dakota and South Dakota Tapwater, 2019
Concentrations of organic and inorganic constituents in tapwater samples from California in 2020-21 (ver. 3.1, March 2024)
Current use pesticides in larval amphibian tissues, amphibian pathogen and wetland sediment screening data from three northeastern National Wildlife Refuges, 2013-2014
Metal concentrations in sediment and amphibian tissues from wetlands sampled across the United States
Pesticide concentrations in surface waters of the Sacramento Valley rice-growing regions, 2010
Density declines, richness increases, and composition shifts in stream macroinvertebrates
Predicted aquatic exposure effects from a national urban stormwater study
Energy-related wastewater contamination alters microbial communities of sediment, water, and amphibian skin
Improving understanding and coordination of science activities for PFAS in the Chesapeake watershed
Juxtaposition of intensive agriculture, vulnerable aquifers, and mixed chemical/microbial exposures in private-well tapwater in northeast Iowa
Occurrence of mixed organic and inorganic chemicals in groundwater and tapwater, town of Campbell, Wisconsin, 2021–22
Wild bee exposure to pesticides in conservation grasslands increases along an agricultural gradient: A tale of two sample types
Bottled water contaminant exposures and potential human effects
Estrogenic activity response to best management practice implementation in agricultural watersheds in the Chesapeake Bay watershed
Tapwater exposures, effects potential, and residential risk management in Northern Plains Nations
Potential health effects of contaminant mixtures from point and nonpoint sources on fish and frogs in the New Jersey Pinelands
Power analysis for detecting the effects of best management practices on reducing nitrogen and phosphorus fluxes to the Chesapeake Bay watershed, 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.