Loren Knopper

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2005-2007: National Sciences and Engineering Research Council of Canada (NSERC) Industrial Research and Development Fellow (IRDF), Jacques Whitford, Ottawa, Ontario

2004-2005: National Sciences and Engineering Research Council of Canada (NSERC) Visiting Fellow in Canadian Government Laboratories. National Wildlife Research Centre, Canadian Wildlife Service, Ottawa, Ontario

2004: Ph.D., Biology, University of Ottawa, Ontario Canada

1999: M.Sc., Biology, University of New Orleans, Louisiana USA

1996: B.Sc., Biology, University of Guelph, Ontario Canada


Ecological risk assessment; Human health risk assessment; Toxicology; Pesticides; Biomarkers; Pollinators; Wind turbines and human health; Risk Assessment


From 2011-present.


Berger, R.G., Ashtiani, P., Ollson, C.A., Whitfield Aslund, M. McCallum, L.C., Leventhall, G. and Knopper, L.D. 2015 Health-based audible noise guidelines account for infrasound and low-frequency noise produced by wind turbines. Front. Public Health 3:31. doi: 10.3389/fpubh.2015.00031

Knopper, L.D., Ollson, C.A., McCallum, L.C., Whitfield Aslund, M.L., Berger, R.G., Souweine, K. and McDaniel, M. 2014. Wind turbines and human health. Front. Public Health 2:63. doi: 10.3389/fpubh.2014.00063

McCallum, L., Whitfield Aslund, M., Knopper, L.D., Ferguson, G.M. and Ollson, C.A.  2014. An investigation of wind energy and health: quantifying electromagnetic fields around wind turbines in Canada. Environmental Health 2014, 13:9.

Ollson, C.A., Knopper, L.D., Whitfield Aslund, M., and Jayasinghe, R. 2014. Site specific risk assessment of an energy-from-waste thermal treatment facility in Durham Region, Ontario, Canada. Part A: Human health risk assessment. Science of the Total Environment. 466-467: 345-356. 

Ollson, C.A., Whitfield Aslund, M., Knopper, L.D., Dan, T. 2014. Site specific risk assessment of an energy-from-waste/ thermal treatment facility in Durham Region, Ontario, Canada. Part B: Ecological risk assessment. Science of the Total Environment.   466-467: 242-252.

Whitfield Aslund, M., Ollson, C.A., and Knopper, L.D. 2013. Projected contributions of future wind farm development to community noise and annoyance levels in Ontario, Canada. Energy Policy. http://dx.doi.org/10.1016/j.enpol.2013.07.070

Ollson, C.A., McCallum, L., Whitfield Aslund, M., and Knopper, L.D. 2013. Are the findings of ‘Effects of industrial wind turbine noise on sleep and health’ supported? Noise and Health. 15(63): 148-150

Smith, P.G., Boutin, C., and Knopper, L.D. 2012. Vanadium pentoxide phytotoxicity: effects of species selection and nutrient concentration. Archives of Environmental Contamination Toxicology 64(1): 87-96.

Garron, C., Knopper, L.D., Ernst, W.R., and Mineau, P. 2012. Assessing the genotoxic potential of chlorothalonil drift from potato fields in Prince Edward Island, Canada. Archives of Environmental Contamination and Toxicology. 62(2):222-232.

Saunders, J., Knopper, L.D., Koch, I, Reimer, KJ. 2011. Inclusion of soil arsenic bioaccessibility in ecological risk assessment and comparison with biological effects. Science of the Total Environment. 412-413: 132-137.

Knopper, L.D. and Ollson, C.A. 2011. Health Effects and Wind Turbines: A Review of the Literature. Environmental Health. 10 (1):78. http://www.ehjournal.net/content/10/1/78

McAuley, C. and Knopper, L.D. 2011.  Impacts of Traditional Food Consumption Advisories: Compliance, Changes in Diet and Loss of Confidence in Traditional Foods. Environmental Health; 10 (55). http://www.ehjournal.net/content/10/1/55

Saunders, J., Knopper, L.D., Hough, C., Koch, I, Reimer, KJ. 2011. Arsenic transformations in terrestrial small mammal food chains from contaminated sites in Canada. Journal of Environmental Monitoring 13: 1784-1792.

Dr. Loren Knopper is an internationally recognized environmental health scientist with a diverse and considerably experienced practice. With close to 20 years of experience, Loren’s professional career has focused on human and ecological toxicology, human health and ecological risk assessment, public communication and scientific training, specifically in terms of two primary sectors (energy and agrochemical). Dr. Knopper has led and conducted complex human health and ecological risk assessments at contaminated sites and in support of numerous federal and provincial environmental assessments (e.g., oil refineries, off shore drilling, in situ and mining oil sands and coal development, carbon capture and storage, hydroelectric, wind power, solar power, energy-from-waste), and has conducted numerous deterministic and probabilistic risk assessments for the purposes of registration review of different pesticides under The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) in the United States. He recently presented a work plan to the United States Environmental Protection Agency for conducting a weight of evidence risk assessment based on multiple lines of evidence for a neonicotinoid pesticide. Dr. Knopper is also actively involved with aiding clients with the registration of agrochemical products with regulatory bodies in the United States and Canada.

For many of these projects he has been involved in risk/scientific communication (through public open houses and workshops) with a wide variety of stakeholders including various levels of government, regulatory officials, industry representatives, aboriginal councils, school boards, the media and the general public. He has acted as an expert witness and provided legal support on a number of occasions. Dr. Knopper's work in public communication is innovative in that it is not strictly confined to speaking to the research world but brings scientific knowledge directly into local communities. Dr. Knopper is at the forefront of this innovative approach and is a compassionate and trustworthy figure, upholding the highest ideals and standards.

Loren also maintains a very active academic practice that he couples with his role as a health consultant. He has conducted human and ecological toxicology and health investigations dealing with the study of electromagnetic fields in schools and around wind power projects and transmission lines; he has conducted field (oral and drift pathways) and laboratory (oral and inhalation exposure) research with Environment Canada on avian and mammalian exposure to pesticides; and he has conducted novel research into the use and development of non-lethal biomarkers of exposure and effects by following a broad interdisciplinary approach (e.g., molecular biology, genotoxicity, reproductive biology, physiology) for pesticides, metals and petroleum hydrocarbons. He has taught undergraduate and graduate courses in toxicology and risk assessment at three universities in Ontario, has given workshops for professional development credits and holds Adjunct Professor appointments at the University of Waterloo, the Royal Military College of Canada, and the University of Guelph. He has been supervisor and committee member for a number of M.Sc. and Ph.D. candidates and post-doctoral fellows.

Dr. Knopper has been the recipient of numerous graduate and post-graduate awards, his research has been published in various peer reviewed journals, he acts as a reviewer for numerous journals, and he has presented his work at many scientific conferences and public events. In 2013 Loren was nominated by the Eni Scientific Secretariat as a candidate for the prestigious international Eni Award, which recognizes researchers who have achieved internationally significant results in the field human activity and the natural environment.