Andrea Brunelle to be the guest speaker for the Global Change and Sustainability Center's Fall Seminal Series:
"Climate Driven Dynamics in Southwestern U.S. Desert Ecosystems"
Tuesday, November 5, 2013
4:00pm to 5:00pm
295 FASB (Sutton Building)
Paleoecolgical research from desert wetlands (ciénegas) in the American Southwest provides valuable information on drivers of vegetation change, and the role of disturbance, like drought and fire, in desert grasslands. Environmental reconstructions from desert wetland sediments also provide information on the resilience of these ecosystems and the climatological controls on their form and function. Analyses of proxy data, including pollen preservation ratios, have shown a distinct correlation between to the El Niño Southern Oscillation (ENSO) and prolonged wet-dry cycles. These correlations match well to other known reconstructions of ENSO. Having an additional reliable proxy for ENSO from the American Southwest is valuable for understanding changes in the strength and extent of ENSO over the last several thousand years as well as for untangling the impact of ENSO on the American Deserts from that of the North America Monsoon.
Photo credit: Patrick Alexander
Scientist in the Spotlight: Pyrogeography with Andrea Brunelle
Friday, 1st November / 2-4pm / Natural History Museum of Utah: Life Gallery - Naturalist Lab
Join pyrogeographer Andrea Brunelle to learn the geographical spread of fire in the past and the present. (Included in Museum Admission)
Nature Unleashed Inside Natural Disasters
Dr. Andrea Brunelle in the field: