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Graduate Students

Current Graduate Students

Joanne Ballard Joanne Ballard
Ph.D. Student in GeographyDissertation Title: Late Quaternary Environments of the Southeastern U.S.: Evidence from Carbon Isotope Signatures in Lake SedimentsCommittee: Sally Horn (Chair), Henri Grissino-Mayer, Philip Li, and Chad Lane
Thaddeus G. Bissett
Ph.D. Candidate in Anthropology

Dissertation Title: Investigating the origins of the Shell Mound Archaic: Occupational histories and interaction among shell-bearing sites in western Tennessee.

Committee: David G. Anderson (Chair), Benjamin Auerbach, Jeff Chapman, and Russell Zaretzki

Annie Blankenship
Ph.D. Candidate in Anthropology

Dissertation Title: The Sky Above, The Mud Below: Landscapes of the Prehistoric Rock Art of the Cumberland Plateau Region

Committee: David G. Anderson  (Chair)

Mathew Boehm Mathew Boehm
Ph.D. Student in Geography

Dissertation Title: The Vegetation and Fire History of a Bog Communities, Chattachoochee National Forest, Georgia, U.S.A.

Committee: Sally Horn (Chair), Henri Grissino-Mayer, and Philip Li


M.S. Degree in Geography, August 2012

Thesis Title: The Vegetation and Fire History of a Southern Appalachian Bog, Whiteoak Bottoms, Nantahala National Forest, North Carolina, U.S.A.

Committee: Sally Horn (Chair), Henri Grissino-Mayer, and Philip Li

Maria Caffrey
Ph.D. Degree in Geography, May 2011

Dissertation Title: Holocene Climate and Environmental History of Laguna Saladilla, Dominican Republic

Committee: Sally Horn (Chair), Henri Grissino-Mayer, Liem Tran, and Dave Finkelstein (Earth and Planetary Sciences)

Stephen Carmody
Ph.D. Student in Anthropology

Dissertation Title: From Foraging to Food Production: A diachronic perspective on the interrelationship between people and plants on the southern Cumberland Plateau, Tennessee.

Committee: Jan Simek (Chair), Sarah Sherwood, Kandace Hollenbach, Gary Crites, and Sally Horn

Sharon Clemmensen
Ph.D. Student in Ecology and Evolutionary Biology
Savannah Collins Savannah Collins
M.S. Student in Geography

Thesis Title: Detecting Tropical Cyclone Signals in Tree Growth Reponses of Longleaf Pine (Pinus palustris Mill.), Lake Louise, Georgia, U.S.A.

Committee: Henri D. Grissino-Mayer (Chair), Kelsey Ellis, and Sally Horn

Morgan Douglas
Ecology and Evolutionary Biology
Alex Dye
M.S. Degree in Geography, May 2013

Thesis Title: Stand Dynamics and Fire History of a Southern Appalachian Pine-Hardwood Forest on Rainy Mountain, Chattahoochee National Forest, Georgia, U.S.A.

Committee: Henri Grissino-Mayer (Chair), Sally Horn, and Philip Li

John Eads
M.S. Degree in Geographym May 2013

Thesis Title: Microscopic Charcoal as Evidence of Long-term Fire History in the Cuatro Cienegas Valley, Mexico

Committee: Sally Horn (Chair), Henri Grissino-Mayer, and Philip Li

Matthew Gage
Ph.D. Candidate in Anthropology

Dissertation Title: Late Archaic Settlement and Population Maintenance in the Tennessee Valley: Examining Environmental Change, Land Use Strategies and Social Structure in the Late Archaic Southeast

Committee: Jan Simek (Chair), David Anderson, Sarah Sherwood, and Sally Horn

Niki Garland
M.S. Degree in Geography, May 2013

Thesis Title: A Dendroecological Evaluation of the Possible Effects of Coal Ash on Tree Growth, Kingston Fossil Plant, Tennessee, U.S.A.

Committee: Henri Grissino-Mayer (Chair), Sally Horn, and Philip Li

Grant Harley
Ph.D. Degree in Geography, May 2012

Dissertation Title: Vegetation Dynamics of Endangered Pine Rockland Communities in the Lower Florida Keys, U.S.A.

Committee: Henri Grissino-Mayer (Chair), Sally Horn, Carol Harden, and Jennifer Franklin (Forestry, Wildlife, Fisheries)

Alisa Hass Alisa Hass
Ph.D. Student in Geography

Committee: Sally Horn (Chair)

Phillip Hollingsworth, Jr.
Ecology and Evolutionary Biology
Allison Ingram Allison Ingram
M.S. Student in Geography

Committee: Henri Grissino-Mayer (Chair)

Erik Johanson Erik Johanson

Ph.D. Student in Geography

Committee: Sally Horn (Chair), Henri Grissino-Mayer


M.A. Degree in Anthropology, May 2012

Thesis Title: Predictive Modeling in Kisatchie National Forest: Archaeological Site Locations in Western Louisiana

Committee: David G. Anderson (Chair), Boyce N. Driskell, and Kandace Hollenbach

Matthew Kerr Matthew Kerr

Ph.D. Student in Geography

Committee: Sally Horn (Chair) and Henri Grissino-Mayer


M.S. Degree in Geography, May 2014

Thesis Title: Stable Isotope Analysis of Lake Sediments from Laguna Santa Elena and Laguna Azul, Costa Rica.

Committee: Sally Horn (Chair), Henri Grissino-Mayer, and Chad Lane

Megan Hoak King
M.A. Student in Anthropology

M.A. Thesis Title: The Distribution of Paleoindian Debitage from the Pleistocene Terrace at the Topper Site: An Evaluation of a Possible Pre-Clovis Occupation (38Al23)

Committee: David G. Anderson (Chair), Boyce Driskell, Kandace Hollenbach

Desiree Kocis
M.S. Degree in Geography, May 2012

Thesis Title: Fire History Reconstruction in the National Key Deer Refuge based on Macroscopic Charcoal in Palmetto Pond, No-Name Key, Florida, U.S.A.

Committee: Sally Horn (Chair), Henri Grissino-Mayer, and Liem Tran

Jim Kocis
M.S. Degree in Earth and Planetary Sciences, May 2011

Thesis Title: Reconstructing Holocene Paleoenvironments from Floodplain Paleosol and Sedimentary Sequences in the Interior of Southeastern North America.

Committee: Zheng-Hua Li and Linda Kah (Co-Chairs), Steven Driese, David Finkelstein, and Sally Horn

Lisa LaForest
Ph.D. Degree in Geography, August 2012

Dissertation Title: Fire Regimes of Lower-elevation Forests in Great Smoky Mountains National Park, Tennessee, U.S.A.

Committee: Henri Grissino-Mayer (Chair), Sally Horn, Carol Harden, and Wayne Clatterbuck (Forestry, Wildlife, Fisheries)

Robert Lassen
Ph.D. Candidate in Anthropology

Dissertation Title: The Potential for Gender Distinctions in Folsom-Era Hunting Technology

Committee: David G. Anderson (Chair), Boyce Driskell

Nancy Li Nancy Li

Ph.D. Student in Geography

Dissertation Title: Glacial History of the Tian Shan Mountains, China

Committee: Philip Li (Chair), Henri Grissino-Mayer, and Sally Horn


M.S. Degree in Geography, December 2010

Thesis Title: The Impact of Oceanic-Atmospheric Oscillation Change in the Southeastern United States Abstracted from Tree-Ring Network Data

Committee: Henri Grissino-Mayer (Chair), Sally Horn, and Carol Harden

Zewen Liu
M.S. Degree in Geography, August 2012

Thesis Title: Response of Lake Level Fluctuations to Climate Change in the Tibetan Plateau in the Past Four Decades Investigated Using Landsat Images

Committee: Philip Li (Chair)

Scott Meeks
Ph.D. Candidate in Anthropology

Dissertation Title: The Rise and Fall of Mississippian Chiefdoms in the Vacant Quarter and Beyond: Assessing Socio-Political Change in the Mississippian Southeast from a Panarchical Perspective

Committee: Jan Simek (Chair), David Anderson, Boyce Driskell, and Sally Horn

Alex Pilote
M.S. Degree in Geography, May 2012

Thesis Title: Stand History of Old-Growth Ponderosa Pine Forests, El Malpais National Monument, New Mexico, U.S.A.

Committee: Henri Grissino-Mayer (Chair), Sally Horn, and Saskia van de Gevel (Appalachian State University)

Becky Potter Becky Potter
M.S. Student in Geography

Committee: Philip Li (Chair), Henri Grissino-Mayer, and Sally Horn

Maegen Rochner Maegen Rochner
M.S. Student in Geography

Thesis Title: Dendrogeomorphic Analysis of Debris Flow Activity in the Mt. Le Conte Area, Great Smoky Mountains National Park, Tennessee, U.S.A.

Committee: Henri Grissino-Mayer (Chair), Sally Horn, and Carol Harden

Dorothy Rosene Dorothy Rosene
M.S. Student in Geography

Thesis Title: Climate Response of Hardwood Trees Growing along an Elevational Transect, Great Smoky Mountains National Park, Tennessee, U.S.A.

Committee: Henri Grissino-Mayer (Chair), Sally Horn, and Philip Li

Monica Rother
M.S. Degree in Geography, August 2010

Thesis Title: Influences of Climate and Anthropogenic Disturbances on Wildfire Regimes of the Zuni Mountains, New Mexico, U.S.A.

Committee: Henri Grissino-Mayer (Chair), Sally Horn, and Carol Harden

Douglas Sain
Ph.D. Student in Anthropology

Dissertation Title: Evaluating Pre-Clovis at the Topper Site (38Al23), South Carolina

Committee: David G. Anderson (Chair), Boyce Driskell

John Sakulich
Ph.D. Degree in Geography, May 2011

Dissertation Title: A Dendrochronological Approach for Analyzing the Geographic Range Structure of Tree Species

Committee: Henri Grissino-Mayer (Chair), Sally Horn, Carol Harden, Nicholas Nagle, and Nate Sanders (Ecology and Evolutionary Biology)

Elizabeth Schneider
M.S. Degree in Geography, May 2014

Thesis Title: Low-Frequency Climate Drivers of Wildfire Activity, El Malpais National Monument, New Mexico, U.S.A.

Committee: Henri D. Grissino-Mayer (Chair), Sally Horn, and Philip Li

Alice Schoen
M.S. Degree in Geography, May 2011

Thesis Title: An 8000-year Sediment Record of Vegetation and Environmental History from Laguna Tortuguero, Puerto Rico

Committee: Sally Horn (Chair), Henri Grissino-Mayer, and Chad Lane (University of North Carolina-Wilmington)

Ian Slayton
M.S. Degree in Geography, August 2010

Thesis title: A Vegetation History from Emerald Pond, Great Abaco Island, The Bahamas, Based on Pollen Analysis

Committee Members: Sally Horn (Chair), Henri Grissino-Mayer, and Ken Orvis

Jessica Slayton
M.S. Degree in Geography, December 2010

Thesis Title: Response of Ponderosa Pine to Variable Temporal Scale Environmental Processes, French Creek Drainage, Idaho

Committee: Henri Grissino-Mayer (Chair), Sally Horn, and Carol Harden

Mark Spond
Ph.D. Degree in Geography, December 2011

Dissertation Title: A Multi-proxy Approach to Understanding Environmental Dynamics in Old-Growth Woodlands, El Malpais National Monument, New Mexico, U.S.A.

Committee: Henri Grissino-Mayer (Chair), Sally Horn, Carol Harden, and Wayne Clatterbuck (Forestry, Wildlife, Fisheries)

Lauren Stachowiak Lauren Stachowiak
Ph.D. Student in Geography

Dissertation Title: Applied GIS and Fire Behavior in a Pine Rockland Ecosystem, Big Pine Key, Florida, U.S.A.

Committee: Henri D. Grissino-Mayer (Chair), Sally Horn, Nicholas Nagle, and Wayne Clatterbuck

Zack Taylor
Ph.D. Degree in Geography, May 2010

Dissertation Title: Spatial Variation in Organic Carbon and Stable Isotopic Composition of Lake Sediments at Laguna Zoncho, Costa Rica

Committee: Sally Horn (Chair), Carol Harden, Ken Orvis, and Dave Finkelstein (Earth and Planetary Sciences)

Chris Underwood
Ph.D. Degree in Geography, May 2013

Dissertation Title: Fire and Forest History in Native Yellow Pine and Mixed Hardwood-Pine Communities of the Southern Appalachian Mountains, U.S.A.

Committee: Sally Horn (Chair), Henri Grissino-Mayer, Carol Harden, and Kandace Hollenbach (Anthropology)

Matthew Valente Matthew Valente
Ph.D. Student in Geography

Dissertation Title: Late Quaternary Palaeoenvironments and Biota of Cuatro Cienegas, Mexico

Committee: Sally Horn (Chair), Henri Grissino-Mayer, Darrin Hulsey (Ecology and Evolutionary Biology), and Maarten Kappelle

Annie Walker
Graduate Student in Earth and Planetary Sciences
Martin Walker
M.A. Student in Anthropology

Thesis Title: Variability in Late Archaic Shell Rings in the Southeastern United States

Brian Watson
M.S. Degree in Geography, May 2010

Thesis Title: An Investigation of Stratigraphic Evidence for an Abrupt Climatic Event 8200 yr BP in Valle de las Morrenas, Costa Rica

Committee: Sally Horn (Chair), Carol Harden, Ken Orvis, and Chad Lane (University of North Carolina-Wilmington)

Sarah Jones Wayman Sarah Jones Wayman
M.S. Student in Geography

Thesis Title: Stand History, Structure, and Composition of the Pygmy Forests at El Malpais National Monument, New Mexico, U.S.A.

Committee: Henri Grissino-Mayer (Chair), Sally Horn, and Philip Li

Kevin Willis Kevin Willis
Ph.D. Student in Geography

Committee: Sally Horn (Chair)