Picture of John  Giesy

John Giesy Professor Emeritus, Department of Veterinary Biomedical Sciences

Research Area(s)

  • Environmental toxicology

Academic Credentials

  • BSc, Alma College
  • MSc and PhD, Michigan State University

Dr. John P. Giesy is currently a professor and Canada Research Chair in Environmental Toxicology in the WCVM's Department of Veterinary Biomedical Sciences and the Toxicology Centre at the University of Saskatchewan. He is also Distinguished Professor Emeritus of Zoology at Michigan State University in East Lansing, Michigan, where he was a professor for 26 years. He is also Chair Professor at Large of Biology and Chemistry at City University of Hong Kong and Concurrent Professor of Environmental Science at Nanjing University, China.


Research Interests

  • Toxicity and reproductive effects of herbicides, chlorinated dioxins, and perfluorinated compounds in fish and fish-eating mammals.
  • Fate and effects of PAHs, pesticides, and halogenated and perflourinated compounds in the environment.
  • Effects of endocrine modulating compounds in fish and wildlife.
  • Development and application of analytical and bioanalytical techniques to environmental issues.
  • Ecological risk assessment of industrial and agricultural chemicals.


Dr. Giesy is a world leading eco-toxicologist with interests in many aspects of eco-toxicology, including both the fates and effects of potentially toxic compounds and elements, particularly in the area of ecological risk assessment. He has conducted research into the movement, bioaccumulation, and effects of toxic substances at different levels of biological organization, ranging from biochemical to ecosystem.

Dr. Giesy has done extensive research in the areas of metal speciation, multi-species toxicity testing, biochemical indicators of stress in aquatic organisms, fate and effects of PAHs, halogenated hydrocarbons, including chlorinated dibenzo-dioxins and -furans, PCBs and pesticides. Dr. Giesy discovered the phenomenon of photo enhanced toxicity of organic compounds, such as PAHs. His studies include both laboratory and field as well as mesocosm studies and apply tools from molecular biology to ecosystem-level. He was the first to report the occurrence of perfluorinated compounds in the environment.

Dr. Giesy has published more than peer-reviewed articles and presented more than 1,000 lectures world-wide. His research is much used and cited by other researchers: Dr. Giesy is in the top 0.1 per cent of active authors (ISI Current Contents) and was the second most cited author in the field of Ecology/Environmental Science over the period of 1997-2007 (In-Cites; http://in-cites.com/top/2007/third07-env.html).


Zhao, X.-L., S.-L Liu, P.-F. Wang, Z. Tang, H.-Y. Niu, Y.-Q. Cai, F.-C. Wu, H. Wang, W. Meng and J.P. Giesy.  2015.  Surfactant-modified Flowerlike Layered Double Hydroxide-coatedmagnetic Nanoparticles for Preconcentration of Phthalate Esters from Environmental Water Samples. J. Chromatogr. A.  1414:22–30.  DOI.org/10.1016/j.chroma.2015.07.105

Wang, H., X.-L. Zhao, W. Meng, P.-F. Wang, F.-C. Wu, Z. Tang, X.-J. Han and J.P. Giesy.  2015.  Cetyltrimethylammonium Bromide-Coated Fe3O4Magnetic Nanoparticles for for Analysis of 15 Trace Polycyclic Aromatic Hydrocarbons in Aquatic Environments by Ultraperformance, Liquid Chromatography with Fluorescence Detection.  Anal. Chem.  7:7667−7675.  DOI: 10.1021/acs.analchem.5b01077

Zhao, X.-L., S.-L. Liu, Z. Tang, H.-Y. Niu, Y.-Q. Cai, W. Meng, F.-C. Wu and J.P. Giesy.  2015.  Synthesis of Magnetic Metalorganic Framework (MOF) for Efficient Removal of Organic Dyes from Water.  Nature Sci. Repts. 5:11849  DOI: 10.1038/srep11849

 Fu, Z.-Y., F.-C. Wu, C.-L. Mo, Q.-J. Deng, W. Meng, J.P. Giesy.  2016.  Comparison of Arsenic and Antimony Biogeochemical Behavior in Water, Soil and Tailings from Xikuangshan, China. Sci. Total. Environ. 539:97–104.  DOI: org/10.1016/j.scitotenv.2015.08.146

 Gao, S.-X. Y. Wan, G.-M. Zheng, K. Luo, K. Kannan, J.P. Giesy, M.H.W. Lam and J.-Y. Hu.  2015.  Organobromine Compound Profiling in Human Adipose: Assessment of Sources of Bromophenol.  Environ. Pollut. 204:81-89.

 Li, J., J.P. Giesy, L.-Q. Yu, G.-Y. Li, C.-S. Liu.  2015.  Effects of Tris(1,3-dichloro-2-propyl) Phosphate (TDCPP) in Tetrahymena thermophila: Targeting the Ribosome.  Nature Sci. Repts. 5:10562 | DOI: 10.1038/srep10562.

Wang, Y., F.-C. Wu, J.P. Giesy, C.-L. Feng, Y.-D. Liu, N. Qin, and Y.-J. Zhao.  2015.  Non-Parametric Kernel Density Estimation of Species Sensitivity Distributions in Developing Water Quality Criteria of Metals.  Environ. Sci. Pollut. Res. 22:13980–13989.  DOI 10.1007/s11356-015-4602-8

Morandi, G.D., S.B. Wiseman, A. Pereira, R. Mankidy, I.G.M. Gault, J.W. Martin and J.P. Giesy.  2015.  Effects-Directed Analysis of Dissolved Organic Compounds in Oil 2 Sands Process-Affected Water.  Environ. Sci. Technol.  (On Line)  DOI: 10.1021/acs.est.5b02586

Al Naggar, Y., S. Wiseman, J.-X. Sun, G. C. Cutler, M. Aboul-Soud, E. Naiem, M. Mona, A. Seif, and J.P. Giesy.  2015.  Effects of environmentally-relevant mixtures of four common organophosphorus insecticides on the honey bee (Apis mellifera L.)  J. Insect Physiol. 82:85–91. DOI:org/10.1016/j.jinsphys.2015.09.004

Zhu, Y.-R, F.-C. Wu, Z.-Q. He, J.P. Giesy, W.-Y. Feng, Y.-S. Mu, C.-L. Feng, X.-L. Zhao, H.-Q. Liao and Z. Tang,.  2015.  Influence of natural organic matter on the bioavailability and preservation of organic phosphorus in lake sediments.  Chem. Geol. 397:51–60.  DOI: org/10.1016/j.chemgeo.2015.01.006