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I aid in the Lyell Centre’s temporal analysis of the carbon composition of headwater streams, helping to determine both seasonal fluctuations and rapid responses to extreme rainfall events through fieldwork and laboratory analysis. I am also helping to develop and execute investigations into the photochemical and microbial degradation of river water carbon, for both peat-dominated temperate headwater streams and the headwaters of tropical rainforests.
This project is built around a recently-completed field campaign in the Iwokrama rainforest, Guyana, to characterize the mobilization of dissolved organic carbon in headwater streams during the onset of the rainy season. Particularly, the aim of this project is to identify optically invisible dissolved organic matter (iDOM) and quantify this currently under-researched component to improve global DOM models and correct remote sensing of DOM, neither of which currently account for iDOM.