Cutting Edge Lectures in Science: Environmental change in Canada鈥檚 Arctic: How Different is the Present from the Past?
A presentation by Dr. Marianne Douglas (Director,
Canadian Circumpolar Institute and Professor, Earth and Atmospheric
Sciences, University of Alberta)
Arctic regions are experiencing high degrees of
environmental change, including thinning of arctic sea ice,
increased deposition of airborne pollutants, as well as evidence of
a longer growing season. In order to assess the present rate and
effect of these changes to the terrestrial system, we examine lake
sediments (paleolimnology) to reconstruct past natural baseline
conditions. Our investigations of aquatic ecosystems reveal that
they are undergoing important changes in their physical, chemical
and biological characteristics. Understanding these changes
provides insight into what future arctic conditions may
prevail.
In this presentation I will use examples from our research on lakes
and ponds in the Canadian High Arctic to show some of the practical
applications of paleolimnology in studying regional climate change,
archaeology, and airborne pollutants.
Free, everyone welcome. Seating is limited. No
reservations necessary.聽The conference is聽followed by a
reception.