Danielle Lemire

Danielle Lemire

MSc Student Dr. Igor Lehnherr, supervisor
Email:
danielle.lemire@mail.utoronto.ca

Research and Professional Interests

My passion for the environment led me to complete a degree in Environmental Biology and eventually led to me pursuing a master’s in Physical Geography. My research studies whether climate-warming, through the melting of glaciers, is releasing legacy mercury (Hg) trapped in glaciers into downstream waterbodies. I will compare the accumulation of Hg through time in ice and sediment cores collected from Lake Hazen, Ellesmere Island, NU. Overall, this data will allow me to determine the amount of legacy Hg, in addition to modern inputs of Hg accumulating in Lake Hazen and whether this is a health concern for Indigenous people consuming traditional country food (i.e., Arctic char). I hope my study will elucidate whether climate change may delay the benefit of decreasing Hg emissions, and help improve models of global Hg cycling, lead to the development of policies on Hg management, and better manage contaminant exposure for Arctic people and wildlife.

Why Geography at UTM?

I became interested in the University of Toronto because it is a globally top-ranked public research university in Canada. In addition, the opportunity to do fieldwork in the Arctic and the resources available through the Geography department at UTM ultimately led to my decision to complete a master’s degree at UTM.

Honours and Awards

  • W. Garfield Weston Award for Northern Research ($15,000)
  • Donald F. Putnam Graduate Scholarship ($1500)
  • University of Saskatchewan Entrance Scholarship ($500)

Presentations

  • Lemire D, Lehnherr I, Young C, De Silva A, Criscitiello A, Kirk J, Varty S (November 15-19, 2020). Using ice and sediment cores to quantify climate-warming induced inputs of legacy mercury to Lake Hazen, Nunavut. Poster presentation at the SETAC conference in Fort Worth, Texas.
  • Lemire D, Lehnherr I, Young C, De Silva A, Criscitiello A, Kirk J, Varty S (November 3-7, 2019). Using ice and sediment cores to quantify climate-warming induced inputs of legacy mercury to Lake Hazen, Nunavut. Poster presentation at the SETAC conference in Toronto, ON.
  • Lemire, D., Lehnherr, I., Young, C., De Silva, A., Criscitiello, A., Kirk, J. (September 8-13, 2019) Using ice and sediment cores to quantify climate-warming induced inputs of legacy mercury to Lake Hazen, Nunavut. Poster presentation at the ICMGP conference in Krakow, Poland.
  • Lemire, D., Lehnherr, I., Young, C., De Silva, A., Criscitiello, A., Kirk, J. (May 6-7, 2019) Comparing temporal trends of mercury accumulation recorded in ice and sediment cores from the Lake Hazen watershed (Nunavut). Poster presentation at the University of Toronto Polar Workshop in Mississauga, ON.
  • Lemire, D., Lehnherr, I., Young, C., De Silva, A., Criscitiello, A., Kirk, J. (May 1-3, 2019) Comparing temporal trends of mercury accumulation recorded in ice and sediment cores from the Lake Hazen watershed (Nunavut). Poster presentation at the PALS conference in Waterloo, ON.
  • Lemire, D., Lehnherr, I., Young, C., De Silva, A., Criscitiello, A., Kirk, J. (December 10, 2018) Comparing temporal trends of mercury accumulation recorded in ice and sediment cores from the Lake Hazen watershed (Nunavut). Poster presentation at the ArcticNet ASM conference, Ottawa, ON.

Publications

  • St. Pierre, K. A., St. Louis, V. L., Lehnherr, I., Gardner, A., Serbu, J., Mortimer, C. A., Muir, D.C.G., Wiklund, J.A., Lemire, D., Szostek, L., & Talbot, C. (2019). Drivers of Mercury Cycling in the Rapidly Changing Glacierized Watershed of the High Arctic’s Largest Lake by Volume (Lake Hazen, Nunavut, Canada). Environ. Sci. Technol., 53 (3), 1175–1185.
  • Jamwal, A., Lemire, D., Driessnack, M., Naderi, M., Niyogi, S. Interactive effects of chronic dietary selenomethionine and cadmium exposure in rainbow trout (Oncorhynchus mykiss): A preliminary study. Chemosphere 197 (2018) 550-559

Research

Research Supervisor/mentor: 
Dr. Igor Lehnherr

Other

Education: 
MSc Student - University of Toronto
BSc Environmental Biology - University of Saskatchewan