Graduate Student Advisors

What is a GSA?

The purpose of the GSA positions is to introduce student members of CEW at the start of their careers to the function and goals of the Board of Directors in hopes that, once established, they will develop an interest in chairing a CEW and/or serving on the Board of Directors.

In addition to advising the Board of Directors, the role of the GSA is to assist the Organizing Committee (OC) with the Student Program subcommittee. GSAs have a varied role and duties include evaluating and reporting on the student program to the Board of Directors, providing a level of core consistency for the student program from year to year, orient each new OC of past student events, and providing information of value to the new OC.

How to become a GSA:

Each year, the Chair of the Board sends out a broadcast email inviting graduate students to apply for one two-year appointment as an Officer of CEW. Invites usually occur after CEW in late fall and applications are received by December 31. The GSA term begins on February 1 of the calendar year in which the GSA is appointed by the Board of Directors

If you are interested in becoming a GSA, talk to one of our Board members or current GSAs to get some insight on the position and keep an eye out for the invite to apply in late fall each year. For more information contact:

Our current GSAs:

Derek Green (Graduate Student Advisor 2017-2019):

Derek began his graduate studies under the co-supervision of Drs. David Janz and Tim Jardine at the University of Saskatchewan where he completed a Masters thesis on mercury and energy dynamics in fish affected by hydroelectric development. He has since begun a PhD program with Dr. Markus Hecker and aims to use ‘omic technologies to characterize adverse outcome pathways for, and expedite risk assessment of, North American fishes. Email:

Hossein Mehdi (Graduate Student Advisor 2018 – 2020):

Hossein joined Dr. Sigal Balshine’s Aquatic Behavioural Ecology Laboratory at McMaster University in September 2017. He studies the impacts of wastewater effluent contamination in Hamilton Harbour on the physiological and behavioural responses in round goby and other freshwater fishes. He received his MSc in Biology (Water) from the University of Waterloo where he worked with Dr. Paul Craig studying the impacts of multiple stressors on energetics and stress response in fishes using lab and field approaches.  Email: