Former Graduate Students, Postdoctoral Fellows, and Visiting Scientists

Hsiao, Dr. Che-Jen. 2019-2022. Postdoctoral Fellow. Biogeochemistry of C, N, P, and S in savanna ecosystems: Long-term responses to grazing, fire, and vegetation change. [Present Position: Postdoctoral Fellow, Department Soil, Water, and Climate, University of Minnesota, St. Paul, MN, and Research Scientist, Soil Health Institute, Morrisville, NC]

Huddle, Alyssa. 2021. M.S. in Ecology, non-thesis option.  Texas A&M University.  [Present Position:  Fish and Wildlife Biologist, US Fish and Wildlife Service, Austin, TX]

Sun, Lifei. 2018-2019.  Visiting Scholar.  Forest ecosystem nitrogen cycling.  Ph.D. student, Chinese Academy of Sciences.

Zhou, Dr. Yong.  2018.  Savanna vegetation dynamics and their influence on landscape-scale C, N, and P biogeochemistry.  Ph.D. Dissertation, Texas A&M University.  [Present Position: Assistant Professor, Department of Wildland Resources, Utah State University, Logan, UT]

Tumushime, Dr. Ignacie.  2018.  Effect of nutrient availability and competition control on growth and C, N, and P dynamics in loblolly pine and slash pine plantations in north-central Florida.  Ph.D. Dissertation, Texas A&M University.  [Present Position: Assistant Director for Africa, The Borlaug Institute, Texas A&M University, College Station, TX]

Minor, Marco.  2018.  A review of angiosperm and gymnosperm wood decay in loblolly pine dominated ecosystems in the southeastern United States.  M.S., Texas A&M University.

Mushinski, Dr. Ryan.  2017.  Decade-scale influences of organic matter removal on forest soil biogeochemistry and microbial ecology.  Ph.D. Dissertation, Texas A&M University.  [Present Position:  Associate Professor, School of Life Sciences, University of Warwick, Coventry, UK]

Malghani, Dr. Saadat. 2015-2016. Postdoctoral Fellow, trace gas flux partitioning using evidence from isotopomers. [Present Position: Postdoctoral Fellow, University of Copenhagen, Denmark]

Dion, Anais.  2016.  Human dimensions of ecosystem science.  Masters of Natural Resource Development, Texas A&M University.  [Present Position:  Customer Experience Cultural Analyst, Cemex, Monterrey, Mexico]

Foote, Dr. Julie.  2014. Forest management effects on ecosystem biogeochemistry and soil microbial biomass.   Ph.D. Dissertation, Texas A&M University.  [Present Position: Lecturer III, Department of Environmental Science and Ecology, University of Texas at San Antonio, TX]

Wellman, Dr. Rachel. 2014. Climate change impacts on soil nitrogen transformations in the post oak savanna region. Ph.D. Dissertation, Texas A&M University. [Present Position: Education Coordinator, Pine Jog Environmental Education Center, Florida Atlantic University, Boca Raton, FL]

Derkowski, Darcy Moreland.  2014.  Human dimensions of ecosystem science.  Masters of Natural Resource Development, Texas A&M University. [Present Position: Business Development Manager, AIMS Companies, Houston, TX]

Hyodo, Dr. Ayumi.  2012-2014.  Postdoctoral Fellow, biogeochemistry of stable isotopes in ecological research. [Present Position:  Senior Research Development Scientist, Ingevity, North Charleston, SC]

Kantola, Dr. Ilsa.  2012.  Biogeochemistry of woody plant invasion:  Phosphorus cycling and microbial community composition. Ph.D. Dissertation, Texas A&M University.  [Present Position: Staff Scientist, Leverhulme Centre for Climate Change Mitigation, University of Illinois, Champaign-Urbana, IL]

Fegler, Melinda Barnes.  2012.  Soil total phosphorus levels in response to timber harvest practices of Pinus taeda in the western Gulf Coastal Plain.  Masters of Natural Resource Development, Texas A&M University.  [Present Position: Stewardship Coordinator & Executive Director, Jug Bay Wetlands Sanctuary, Upper Marlboro, MD]

Hollister, Dr. Emily B.  2008.  Relationships between structure and function in savanna ecosystems. Ph.D. Dissertation, Texas A&M University. [Present Position: R&D Manager, Sandia National Laboratories, Albuquerque, NM]

Biederman, Dr. Lori A. 2007-2008.  Postdoctoral Fellow, soil biology of grassland and savanna ecosystems.  [Present Position: Adjunct Associate Professor, Dept. Ecology, Evolution, and Organismal Biology, Iowa State University, Ames, IA]

Bai, Dr. Edith.  2007.  Spatial variation in soil and plant δ13C and δ15N values in a subtropical savanna: Implications for vegetation change and nutrient dynamics.  Ph.D. Dissertation, Texas A&M University. [Present Position: Professor and Dean, School of Geographical Sciences, Northeast Normal University, China]

Liu, Dr. Feng.  2007.  Spatial pattern and uncertainty of soil carbon and nitrogen in a subtropical savanna landscape in southern Texas.  Ph.D. Dissertation, Texas A&M University. [Present Position: Professor, Wuhan Botanical Garden, Chinese Academy of Sciences]

Millard, Dr. Peter.  2006.  OECD Research Fellow: Autotrophic vs. heterotrophic contributions to soil respiration in savanna ecosystems. [Present Position: General Manager of Science and Industry, Landcare Research, Lincoln, New Zealand]

Harris, Dr. Wylie N.  2005.  Management impacts on feedbacks in carbon and nitrogen cycles of Great Plains grasslands.  Ph.D. Dissertation, Texas A&M University.

Morgun, Dr. Evgeny.  2004.  Senior Fulbright Fellow: Mechanisms of soil carbon storage and dynamics in grassland ecosystems. [Present Position: Professor, Soil Science Department, Moscow State University, Moscow, Russia]

Liao, Dr. Julia D.  2004. Woodland development and soil carbon and nitrogen dynamics and storage in a subtropical savanna ecosystem.  Ph.D. Dissertation, Texas A&M University. [Present Position: Ecologist, Railroad Commission of Texas, Austin, TX]

Hailemichael, Dr. Million.  2002-2004.  Postdoctoral Fellow, biogeochemistry of grassland and savanna ecosystems.  [Present Position:  Research Scientist, Dept. Biological Sciences, Idaho State University, Pocatello, ID]

Dai, Dr. Xiaoyan.  2002-2004.  Postdoctoral Fellow, biochemistry of soil organic matter in grassland and savanna ecosystems. [Present Position: Soil Scientist, Railroad Commission of Texas, Austin, TX]

Hubbard, Dr. J. Andrew. 2003. Fire-grazing interactions in a mixed-grass prairie.  Ph.D. Dissertation, Texas A&M University. [Present Position: Network Program Manager, Sonoran Desert Inventory and Monitoring Network, National Park Service, Tucson, AZ]

Hays, Kelley A.  1999.  Summer fire impacts and isotopic assessment of vegetation dynamics in Texas coastal Quercus virginiana communities.  M.S. Thesis, Texas A&M University. [Present Position: Wildlife/Urban Interface Specialist, U.S. Fish and Wildlife Service, North Carolina]

McCulley, Dr. Rebecca L.  1998.  Soil respiration and microbial biomass in a savanna parkland landscape: Spatio-temporal variation and environmental controls.  M.S. Thesis, Texas A&M University. [Present Position: Professor and Department Head, University of Kentucky, Lexington, KY]

Ziehr, Lori Herrmann.  1995.  The effects of increased woody plant abundance on the carbon and nitrogen cycles of a subtropical savanna ecosystem.  B.S. Honors Thesis, Texas A&M University.   [Present Position: Acting State Conservationist, USDA/NRCS, Columbus, OH]

Marshall, Dr. Samuel B.  1995.  Biogeochemical consequences of livestock grazing in a juniper-oak savanna.  M.S. Thesis, Texas A&M University. [Present Position: Manager of Nonpoint Source Program and CAFO Coordinator, Tennessee Department of Agriculture, Nashville, TN]

Finlayson, Michelle M.  1995.  M.S. in Ecology, non-thesis option.  Texas A&M University.

Schuster, J. Kent.  1994.  M.S. in Ecology, non-thesis option.  Texas A&M University [Present Position: Attorney-at-Law, Austin, Texas]

Yoder, Dr. Carolyn K.  1993.  Soil water utilization by herbaceous species of the southern Great Plains: Evidence from isotopically labeled water.  M.S. Thesis, Texas A&M University.

Watts, Dr. Stephen E.  1993.  Rooting patterns of co-occurring woody plants on contrasting soils in a subtropical savanna.  M.S. Thesis, Texas A&M University.[Present Position:  Chief of Conservation Branch and Restoration Ecologist, Department of Defense, Edwards Air Force Base, California]

Elsik, Dr. Christine G.  1992.  Growth, physiology, and δ13C of loblolly and shortleaf pine as affected by ozone and soil water deficit.  M.S. Thesis, Texas A&M University.  [Present Position: Professor, Division of Animal Sciences, University of Missouri, Columbia, MO]

Casar, Dr. Isabel.  1991-1992.  Postdoctoral Fellow, biogeochemistry of tropical dry forests. [Present Position:  Professor, Universidad Nacional Autonoma de Mexico, Mexico City]

Midwood, Dr. Andrew J.  1990-1992.  Postdoctoral Fellow, biogeochemistry of grasslands and savannas.  [Present position:  Senior Soil Scientist, Terramera Inc., Vancouver, British Columbia, Canada]

Zitzer, Dr. Stephen F.  1990-1992.  Postdoctoral Fellow, biogeochemistry of grasslands and savannas.  [Present Position:  Professor, Desert Research Institute, University of Nevada]

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