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Post-Drainage Evolution of Wolverine Lake, Old Crow Flats, Yukon by Danielle Chiasson

NSERC PermafrostNet seminar - Post-Drainage Evolution of Wolverine Lake, Old Crow Flats, Yukon by Danielle Chiasson (Université Laval). This presentation explores the post-drainage evolution of vegetation succession and basin morphology of a large lake that drained in Old Crow Flats prior to anthropogenic climate warming. Old Crow Flats is a large permafrost lowland undergoing rapid landscape change related to catastrophic lake drainage events and landscape-scale shrubification. While post-drainage conditions have been well documented in modern lake basins, little is known about the evolution from young basins to old. Danielle will present the results from her radiocarbon dated macrofossil analyses of the margin and centre of a drained lake basin. By reconstructing the history of vegetation succession and its associated permafrost conditions better comparisons can be made of past and present basin evolution.