Friday, December 1, 2017 3:30pm
About this Event
1819 Oak Dr, Hamilton, NY 13346, USA
Ellen Currano, Departments of Botany, Geology & Geophysics, University of Wyoming, will present. Fossil plants are most often preserved as isolated leaves, not entire organisms, making it especially challenging to reconstruct 3-dimensional ecosystems from fossil remains. New proxies involving leaf venation, micromorphological structure, and carbon isotopes are currently being developed to reconstruct vegetation structure from isolated leaf fossils. Fossil leaves also record insect feeding traces, direct evidence of two levels in a fossil food web, and changes in insect herbivory can be related to environmental changes. Case studies using fossil leaves from the western US and Ethiopia will examine changes in forest ecosystems during times of climate change, including the Paleocene-Eocene Thermal Maximum, a geologically abrupt perturbation to the carbon cycle and global climate that is the best geologic analog for modern-day global warming. This NASC Colloquium Series lecture is co-sponsored by CORE Scientific Perspectives, the Geology Department, and Impulse. Reception to follow.
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