2026 Ronald S. Tjeerdema: Environmental Sciences Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Environmental Sciences	58	3327	3182	1285	1189	247	10012

Overview

Ronald S. Tjeerdema is affiliated with the University of California, Davis in the United States. Their research primarily focuses on environmental science and agricultural and biological sciences, with a particular emphasis on pollution, plant science, health, toxicology and mutagenesis, industrial and manufacturing engineering, and water science and technology.

Their work covers several main topics, including:

Pesticide and Herbicide Environmental Studies
Pharmaceutical and Antibiotic Environmental Impacts
Weed Control and Herbicide Applications
Water Quality Monitoring and Analysis
Advanced Oxidation Water Treatment
Toxic Organic Pollutants Impact
Environmental Toxicology and Ecotoxicology

Recent scholarly articles authored or co-authored by Tjeerdema reflect a focus on environmental fate and risk assessments linked to pesticides in agricultural contexts. Selected papers include:

"Quantum Yield for the Aqueous Photochemical Degradation of Chlorantraniliprole and Simulation of Its Environmental Fate in a Model California Rice Field" (2020), published in Environmental Toxicology and Chemistry
"Environmental fate and aquatic risk assessment of oxyfluorfen in California rice fields" (2025), published in Integrated Environmental Assessment and Management
"Soil-Water Partitioning Behavior of Oxyfluorfen Under California Rice Field Conditions" (2023), published in ACS Agricultural Science & Technology
"CROSERF special issue preface" (2023), published in Aquatic Toxicology
"Pyrethroid-driven toxicity and its relationships with urban land use: Findings from 15 years of statewide monitoring in California watersheds" (2025), published in The Science of The Total Environment

Frequent collaborators of Tjeerdema include David Bonnar, Zachary C. Redman, Cort Anastasio, Jeff P. Eichler, and Sanjai J. Parikh.

Tjeerdema has published in several scientific journals, often those dealing with environmental toxicology, assessment, and agricultural chemical impacts. Notable venues in which they have been published include:

Environmental Toxicology and Chemistry
Integrated Environmental Assessment and Management
ACS Agricultural Science & Technology
Aquatic Toxicology
The Science of The Total Environment

Best Publications

Standardization of the Preparation and Quantitation of Water-accommodated Fractions of Petroleum for Toxicity Testing

M.M Singer;D Aurand;G.E Bragin;J.R Clark

584
Citations
Environmental fate and toxicology of fipronil

Amrith S. Gunasekara;Tresca Truong;Kean S. Goh;Frank Spurlock

463
Citations
Evaluation of metabolite extraction strategies from tissue samples using NMR metabolomics

Ching Yu Lin;Huifeng Wu;Ronald S. Tjeerdema;Mark R. Viant

429
Citations
Applications of Metabolomics in Agriculture

Richard A. Dixon;David R. Gang;Adrian J. Charlton;Oliver Fiehn

306
Citations
Detection of domoic acid in northern anchovies and California sea lions associated with an unusual mortality event.

Kathi A. Lefebvre;Christine L. Powell;Mark Busman;Gregory J. Doucette

292
Citations
Metabolomics: Methodologies and applications in the environmental sciences

Ching Yu Lin;Mark R. Viant;Ronald S. Tjeerdema

238
Citations
Metabolic effects of dinoseb, diazinon and esfenvalerate in eyed eggs and alevins of Chinook salmon (Oncorhynchus tshawytscha) determined by 1H NMR metabolomics

Mark R. Viant;Christopher A. Pincetich;Ronald S. Tjeerdema

180
Citations
Correlation between heat-shock protein induction and reduced metabolic condition in juvenile steelhead trout (Oncorhynchus mykiss) chronically exposed to elevated temperature

M. R. Viant;I. Werner;E. S. Rosenblum;A. S. Gantner

177
Citations
International NMR-Based Environmental Metabolomics Intercomparison Exercise

Mark R. Viant;Daniel W. Bearden;Jacob G. Bundy;Ian W. Burton

169
Citations
Domoic acid in planktivorous fish in relation to toxic Pseudo-nitzschia cell densities

K. A. Lefebvre;M. W. Silver;S. L. Coale;R. S. Tjeerdema

160
Citations
Toxic actions of dinoseb in medaka (Oryzias latipes) embryos as determined by in vivo 31P NMR, HPLC-UV and 1H NMR metabolomics.

Mark R. Viant;Christopher A. Pincetich;David E. Hinton;Ronald S. Tjeerdema

146
Citations
Polyhydroxybutyrate: plastic made and degraded by microorganisms.

Christine R. Hankermeyer;Ronald S. Tjeerdema

142
Citations
NMR-derived developmental metabolic trajectories: an approach for visualizing the toxic actions of trichloroethylene during embryogenesis

Mark R. Viant;Jacob G. Bundy;Christopher A. Pincetich;Jeffrey S. de Ropp

136
Citations
A Tale of Two Spills: Novel Science and Policy Implications of an Emerging New Oil Spill Model

Charles H. Peterson;Sean S. Anderson;Gary N. Cherr;Richard F. Ambrose

132
Citations
Health and survival of red abalone, Haliotis rufescens, under varying temperature, food supply, and exposure to the agent of withering syndrome.

Beverly A. Braid;James D. Moore;James D. Moore;Thea T. Robbins;Thea T. Robbins;Ronald P. Hedrick

124
Citations
Domoic acid-producing diatom blooms in Monterey Bay, California: 1991-1993.

P. M. Walz;D. L. Garrison;W. M. Graham;M. A. Cattey

122
Citations
Fate and effects of diazinon.

D J Larkin;R S Tjeerdema

111
Citations
Effects of Dispersant Treatment on the Acute Aquatic Toxicity of Petroleum Hydrocarbons

M. M. Singer;S. George;I. Lee;S. Jacobson

109
Citations
Environmental fate and toxicology of methomyl.

April R. Van Scoy;Monica Yue;Xin Deng;Ronald S. Tjeerdema

109
Citations
Identifying primary stressors impacting macroinvertebrates in the Salinas River (California, USA): Relative effects of pesticides and suspended particles

B.S. Anderson;B.M. Phillips;J.W. Hunt;V. Connor

107
Citations
Contaminant concentrations in sport fish from San Francisco Bay, 1997.

Jay A. Davis;Michael D. May;Ben K. Greenfield;Russell Fairey

102
Citations

Frequent Co-Authors

Bryn M. Phillips University of California, Davis

Brian S. Anderson University of California, Davis

Carolyn S. Friedman University of Washington

Samantha B. Joye University of Georgia

Mikko Nikinmaa University of Turku

Ponisseril Somasundaran Columbia University

Gary N. Cherr University of California, Davis

Craig E. Wheelock Karolinska Institute

David E. Hinton Duke University

Bruce R. Mate Oregon State University

External Links

Personal website of Ronald S. Tjeerdema

If you think any of the details on this page are incorrect, let us know.

Related Online Degrees & Career Pathways

For students interested in broadening their expertise beyond Environmental Sciences, pursuing related degrees online offers flexibility and diverse career opportunities. Many professionals opt for a one year MPA to gain skills in public administration, environmental policy, and management, which are crucial for leadership roles in government and non-profits focused on sustainability.

Another complementary option is earning an accredited online bachelors in sociology. This degree helps students understand the social dimensions of environmental issues, preparing them for roles that require community engagement and social impact analysis.

For those aiming to reach the highest academic levels without a traditional dissertation, some institutions offer 1 year PhD programs online no dissertation. These programs cater to professionals seeking advanced knowledge with minimal disruption to their careers.

Finally, educators or trainers interested in environmental education can explore the best EdS to EdD programs to enhance their leadership and research capabilities in academic and organizational settings.