Within northern peatlands the surface microtopography plays a role in the spatial variability of carbon gas exchange, because it influences vegetation community structure and hydrology. Bog hummocks generally have a higher carbon uptake than hollows, and carbon release is generally higher in wetter areas (hollows, lawns, pool margins). There is a lack of knowledge about the role of pools in the peatland carbon budget, in particular the internal biogeochemical processes that lead to carbon gas generation. Models that simulate pool carbon dynamics and the exchange of carbon between adjacent vegetated ridges and pools are also lacking. Specifically, the overall research objectives are:
Explore & understand the processes and controls that lead to open water pools, their developmental characteristics and how these might influence carbon gas production and exchange
Develop a simulation tool for open water pools that simulates the production, consumption, storage and exchange of carbon gases
Explore through simulation the contribution of pools to the long-term peatland carbon balance
Papers in preparation:
McEnroe, N.A., Roulet, N.T., Moore, T.R. & Garneau, M. "Does size control northern peatland pool carbon gas exchanges? CO2 and CH4 fluxes from an ombrotrophic raised bog, James Bay, Quebec"
McEnroe, N.A., Roulet, N.T. & Moore, T.R. "Limits to growth: Spatial and temporal variability in pool carbon dynamics on an ombrotrophic raised bog, James Bay, Quebec"
Co-lecturer: ENVR200 "The Global Environment-A Systems Approach" (Fall 2005). Topics: Global hydrological cycle, Human appropriation of freshwater, Global water crisis, Uncertainty in climate change & greenhouse gases, Stabilising greenhouse gas emissions, Kyoto Protocol and reducing emissions