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Matthew Bogard

nophotoMatthew Bogard
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Contact

514-987-3000, ext 2927

Université du Québec à Montréal
Pavillon des sciences biologiques, SB-2805
2080 St-Urbain
Montréal, Québec
H2X 3X8
Canada

Diploma(s)

Ongoing Diploma(s)

2012-present: PhD in Biology, Université du Québec à Montréal.

Thesis - Linking ecosystem metabolism and carbon dioxide in boreal lakes.  Supervised by Dr. Paul del Giorgio

Completed Diploma(s)

MSc in Biology: 2011. University of Regina.

Thesis - Effects of anthropogenic urea on northern Great Plains lakes: Ecological implications based on experimental and observational studies. Supervised by Dr. Peter Leavitt

BSc in Biology: 2004. University of Saskatchewan.

Thesis - New potential methods for measuring the effect and recovery of uranium mining activities on the biodiversity and ecosystem function in lakes and flooded pits in northern Saskatchewan.Supervised by Dr. Jeff Hudson.

Current project

Supersaturation and efflux of CO2 from boreal waters to the atmosphere is typical, and represents an important contribution to the atmospheric greenhouse gas balance, but a unified, mechanistic understanding of this phenomenon is unclear.   In boreal soft-water lakes, whole-lake respiration of land-derived carbon in excess of photosynthesis is often considered the main reason for this phenomenon, making lake metabolism metrics a fundamental gauge of the movement of energy and material across the landscape.  However, accurately measuring metabolism, and determining the importance of within-lake biological production (respiration) and uptake (photosynthesis) of CO2 is obscured by abiotic CO2 sources (e.g., DIC loading and speciation, photo-oxidation) and sinks (CO2 sequestration as HCO3- and CaCO3), and by direct terrestrial inputs of CO2.  Consequently, the role of metabolism in lake CO2 flux, what controls this link, and how this link varies throughout the boreal biome are unclear.  Understanding this link is a necessary step to better forecasting how boreal biome C dynamics are both responding to, and influencing the global greenhouse gas budget.  To better understand the controls and importance of the metabolism-CO2 link in lakes of the Eastern Canadian boreal biome, I propose to investigate how external factors (e.g., climate and landscape), within-lake factors (e.g., water chemistry & biota), metabolism, and CO2 dynamics interact by combining information from a large boreal lake database with both mesocosm experimentation and intensive annual sampling in two boreal lakes.  My thesis will begin with a study of abiotic and biological controls of lake pCO2 (chapter 1), followed by an in depth investigation of the patterns and controls of lake P and R (chapters 2 and 3, respectively).  The study will conclude with an evaluation of the balance and magnitude of P and R, and how this balance might respond to, and consequently impact climate-driven changes in the boreal biome.

Articles for submission

Bogard, M.J., R.J. Vogt, D.B. Donald, L. Bunting, E. Jeppesen, M. Søndergaard, and P.R. Leavitt. Differential effects of urea on algal community composition along a gradient of fertilization in eutrophic lakes. In prep. 

Bogard, M.J., D.B. Donald, M.J. Waiser, V.P. Tumber, K. Finlay, P.R. Leavitt. Differential effects of urea fertilization on algal and bacterial production in eutrophic lakes. In prep.

K. Finlay, R.J. Vogt, M.J. Bogard, D. Conrad, B. Wissel, P.R. Leavitt. Atmospheric warming may reduce CO2 efflux from northern hardwater lakes. In prep.

Scott, D., Z. J. Quiñones-Rivera, M.J. Bogard, P.R. Leavitt, B. Wissel. Differential responses of dissolved oxygen and dissolved inorganic carbon to metabolic activity in freshwater lakes:  insights from a mesocosm eutrophication experiment. In review.

 

Publications

Donald, D., M.J. Bogard, K. Finlay, L. Bunting, P.R. Leavitt. 2013. Phytoplankton-specific response to enrichment of phosphorus-rich surface waters with ammonium, nitrate, and urea. PloS one 8 (1), e53277.

Bogard, M.J., D. Donald, K. Finlay, P.R. Leavitt. 2012. Distribution and regulation of urea in lakes of central North America. Freshwater Biology. 57:1277-1292.

Donald, D., M.J. Bogard, K. Finlay, P.R. Leavitt. 2011. Comparative effects of urea, ammonium, and nitrate on phytoplankton abundance, community composition, and toxicity in a hypereutrophic lake. Limnology and Oceanography. 56(6): 2161-2175.

Sereda, J., M.J. Bogard, J. Hudson, T. Dessouki, and D. Helps. 2011. Climate Warming and the Onset of Salinization: Rapid changes in the Limnology of Two Northern Plains Lakes. Limnologica. 41(1):1-9.

Finlay, K., A. Patoine, D.B. Donald, M.J. Bogard, and P.R. Leavitt. 2010. Experimental evidence that pollution with urea can degrade water quality in phosphorus-rich lakes of the northern Great Plains. Limnology and Oceanography. 55(3): 1213–1230.

Dessouki, T., J. Hudson, R. Neal and M. Bogard. 2005. The effects of phosphorus additions on the sedimentation of contaminants in a uranium mine pit-lake. Water Research. 39:3055-3061.

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