Aquatic-Terrestrial Carbon Fluxes and Carbon Budget of a Boreal Lake in Quebec
Waterbodies are major hotspots for carbon (C) transformation and can play an immense role in C fluxes across an entire watershed. Knowledge on the biogeochemical cycling of C explores how C moves through terrestrial and aquatic systems, but seldom examine the lateral movement through the landscape. In creating C budgets of ecosystems, these values are often derived and estimated, posing uncertainties in the global C budget. For instance, the redistribution of organic matter has important implications on biogeochemical cycling of essential biological solutes, like NH4, NO3, CO2, CH4, and terrestrial carbon sequestration. Therefore, in these attempts, a mass-balance approach should be utilized to determine the movement of C to better constrain C fluxes in a landscape. This will include deriving CO2 and CH4 fluxes from the subsurface flow, stream, and lake of a watershed. The goal for our research is to paint a more holistic picture of what is happening at the intersection of aquatic and terrestrial systems and how they impact the net production of carbon emissions to the atmosphere. More broadly, we want to understand the interface and lateral transport of carbon from terrestrial ecosystems into aquatic ecosystems on a boreal lake in Québec.
Gabriel Duran and Paul del Giorgio
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