Stephanie Mumma

 

Department

Earth Sciences

Degree

Masters

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Shields Valley Middle School

Teacher Partner

Carol Galey

Fellowship Year

2008

Research

My research interests lie within the broad topic of climate change – specifically, paleoecology.  I am currently analyzing a 9-meter lake sediment core which was retrieved from Lower Red Rock Lake in the Centennial Valley, just west of West Yellowstone.  As a paleoecologist, I am concerned with ecologic communities from the past, and my lake core spans an impressive 25,000 years of time.  By extracting pollen from selectively spaced samples, and by the fortuitous unique morphologic nature of pollen, I am reconstructing a 25,000 year record of how vegetation has changed in the lake’s vicinity since the last full-glacial.  My research questions focus on the nature of vegetation in response to climate.  “How has vegetation in the Centennial Valley changed since the last glacial maximum?”  “How does it compare to other vegetation records in the Greater Yellowstone Ecosystem (GYE)?”  and finally “Are there global climate signals that show up as patterns in my vegetation record?”   

It is important to know the biotic response to drastic changes in climate such as those involved in glacial-interglacial transitions, so we can better understand what biotic changes we can expect with future climate change.  Records of this length are rare in the GYE, as much of the region was covered in ice during the last glacial.  Most of the existing lakes in the region were formed as a result of glacial recession, so my record since the full-glacial will fill an interesting gap in paleoenvironmental research. 

 

Bio

            I am originally from southern Ohio, where I received my BS in Geological Sciences at Ohio University.  Following my undergraduate work, I became interested in Paleoclimate and Paleoecology after working as a technician at Scripps Institute of Oceanography in La Jolla, CA.  Our lab focused on gaining an understanding of past climate variations by examining isotopic changes in microscopic organisms through time from marine sediment cores. 

            When not teaching or looking at pollen through a microscope, I enjoy rock-climbing, running, hiking, surfing, and singing.  I also love traveling, and try to incorporate the previously mentioned activities into my vacation itineraries.