Technical Integrity / Collaboration / Exceptional Results

Robert Pastorok, Ph.D.

Associate of Integral

Dr. Robert Pastorok is an internationally recognized expert in ecological modeling and risk assessment to support FIFRA/ESA pesticide assessments, Superfund site evaluations, NRDAs, and management of natural resources.  As an ecologist with more than 30 years of experience, he has led the development of risk management decision frameworks, ecotoxicological empirical methods, and new ecological models to assess population- and ecosystem-level effects of chemicals and other stressors.  Dr. Pastorok has been a key participant in efforts to improve risk assessment methods including the EPA Framework for Ecological Risk Assessment, European programs advancing the state of population modeling for ecological risk assessment of pesticides (LEMTOX, CREAM, and MODELINK), the 2014 CropLife America Science Forum on Population Modeling for Assessing Risks of Pesticides to Endangered Species, the 2015 CropLife America Workshop on Guidance for Assessing Risks of Pesticides to Endangered Species, and an ongoing National Institute for Mathematical and Biological Synthesis work group to model impacts of toxic chemicals on ecosystem services.  He has designed and taught EPA courses and an industry-targeted continuing education course on population and ecological modeling.  His earlier work on wildlife exposure modeling was incorporated into EPA’s ECOFRAM guidance on pesticide risk assessment.  Dr. Pastorok led Superfund ecological risk assessments at the Upper Clark Fork River (Montana), Elliott Bay (Washington), McCormick & Baxter Creosoting Site (Oregon), and other sites.

Dr. Pastorok has authored more than 25 peer-reviewed publications and was lead author and editor of the seminal book Ecological Modeling in Risk Assessment:  Chemical Effects on Populations, Ecosystems, and Landscapes (2000, CRC Press).

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