Professor Carl Mitchell
Carl Mitchell is a Professor in the Department of Physical and Environmental Sciences at the University of Toronto - Scarborough, with graduate appointments in the Department of Geography, the UTSC Department of Physical and Environmental Sciences, and the School of the Environment at the University of Toronto. Dr. Mitchell completed his PhD in Physical Geography at the University of Toronto in 2007 and undertook a postdoctoral fellowship at the Smithsonian Environmental Research Center until July 2008, when he was hired as an Assistant Professor at UTSC. He served within the earth and environmental science community as the President of the Canadian Geophysical Union (2019-21). Professor Mitchell is also an Associate Editor at Frontiers in Environmental Science.
Dr. Mitchell usually teaches:
and starting Fall 2026,
Dr. Haiyong (Planck) Huang, Postdoctoral Fellow
Dr. Huang completed his Ph.D. research in 2024, investigating molecular interactions between dissolved organic matter, sulphur and mercury to better understand when and where mercury becomes more bioavailable to microbes who produce methylmercury. His postdoctoral research is diving more deeply into mercury bioavailability in stream sediment.
Sayuri Sagisaka Mendez, PhD Candidate
Sayuri began her PhD in September 2020. She is conducting a series of lab-scale experiments to broaden our understanding of how land cover changes and climate change impact mercury cycling processes, especially methylation and demethylation in wetland soils in relation to plant cover.
Adelheid Willsie, PhD Student
Adelheid just began her PhD in September 2025 and is focusing on novel mercury deposition process in coastal arctic systems, as well as the fate of mercury through deposition to snow through melt. She completed her MSc at Trent University working on mercury cycling processes and the application of natural abundance mercury stable isotopes.
Alice Hamam, MSc Student
Alice began her MSc in May 2025. She is working on cold region hydrological processes using field, remote sensing and GIS approaches in the High Arctic.
Sofia Perez Vasquez, Summer Research Assistant
Sofia is helping out with all aspects of our arctic field work program during the summer 2026 term.
Recent Postdoc, Ph.D. and Masters Alumni
Dr. Katrina MacSween (postdoc).
Dr. Meng Si (postdoc).
Dr. Colin McCarter (postdoc). Now Assistant Professor at Nipissing University.
Dr. Vaughn Mangal (postdoc). Now Assistant Professor at Brock University.
Dr. Wai Ying Lam (postdoc). Now Senior Surface Water Specialist at Ontario Ministry of Environment, Conservation and Parks.
Dr. Wai Ying Lam (PhD 2024). Now Senior Surface Water Specialist at Ontario Ministry of Environment, Conservation and Parks.
Dr. Haiyong (Planck) Huang (PhD 2024). Now postdoc with WATER group at UTSC.
Dr. David McLagan (PhD 2018). Co-supervised with Prof. Frank Wania. Now Assistant Professor at Queen's University.
Dr. Kristine Haynes (PhD 2017). Now Postdoctoral Fellow at Wilfrid Laurier University.
Dr. Rachel Strickman (PhD 2017). Now Environmental Consultant in Seattle area.
Erika Bullen (MSc 2026)
Ishani Sharma (MEnvSc 2025)
Sarah Gigi (MSc 2025)
Sarah McGonigal (MEnvSc 2024)
Yilei Ao (MEnvSc 2023).
Chelsea Crundwell (MEnvSc 2021).
Jiaying Liu (MEnvSc 2021).
Rodrigo Santos Sousa (MEnvSc 2020).
Mike Tredree (MEnvSc 2020).
Talin Atikian (MEnvSc 2019).
Barton Graff (MEnvSc 2019).
Yidan Zhang (MEnvSc 2018). Currently PhD student in South Korea.
Kevin Ng (MSc 2017).
Fauzia Akhter (MEnvSc 2017). Currently science teacher at the US Military Academy.
Tim Trembath (MEnvSc 2017). Currently PhD student at University of Waterloo.
Nadine Hanneson (MEnvSc 2016). Currently environmental consultant.
David Lane (MSc 2015). Currently PhD student in Chemistry.