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Life and Environmental Sciences Seminar (4/10/2017)

Date: 
April 10, 2017 - 10:30am to 11:30am

Dr. Sora Kim
Department of Earth and Environmental Science
University of Kentucky

Eocene shark week: interrelationships between ecology and environment

ABSTRACT 

The Eocene is often invoked as an analogue to future climate change because greenhouse conditions extended to high latitudes. Fossil evidence from the Eocene Arctic and Antarctic include temperate flora and fauna from marine and terrestrial ecosystems. The most abundant marine vertebrate fossils found in Eocene high latitude localities are sand tiger shark teeth, which yield environmental and ecological data related to water conditions and body size, respectively. I use modern sharks as an analogue to provide physiological, environmental, and ecological context for interpretation in deep time. In addition, I compare water salinity and body size of sand tiger shark teeth at Eocene mid- and high latitude localities to evaluate potential latitudinal effects on ecology. The abundance of fossil shark teeth in the geological record offers an opportunity to explore their ecological plasticity during periods of climate change. 

BIOGRAPHY 

My research questions focus on ecosystem responses to ecological change over broad time and spatial scales. I blend the disciplines of biogeochemistry, paleontology, ecology, and physiology using stable isotope techniques. Currently my research explores the interaction between ecology, environment, and climate in two time periods and study systems: Eocene sharks and Holocene terrestrial ecosystems. While these are vastly different directions, I use similar approaches to delve into the biogeochemical mechanisms and processes with modern analogues for physiology and ecology, then wider applications in deeper time. 

 

Location

Location: 
Classroom and Office 1 Building, Room 322

Contact Information

Name: 
Asmeret Asefaw Berhe
Title: 
Associate Professor
Department: 
Life and Environmental Sciences, School of Natural Sciences
Address: 
5200 North Lake Rd.
Merced, CA 95343
United States
Address: 
5200 North Lake Rd.
Merced, CA 95343
United States