The University of Tennessee, Knoxville

The LTRS


Personnel of the Laboratory of Tree-Ring Science

 

Director

Dr. Henri D. Grissino-Mayer

 

Associate Director

Dr. Sally P. Horn

 

Doctoral Students


Lauren Stachowiak

As an undergraduate at the University of Wisconsin-Whitewater, Lauren conducted her first project in dendrochronology. She comes to us after completing her M.S. degree at the University of Pennsylvania. For her doctoral research, Lauren will be investigating the climate and wildfire drivers that might be leading to encroachment of pinyon-juniper forests onto neighborning grasslands at El Malpais National Monument in New Mexico.

 

Masters Students


Dorothy Rosene

Dorothy joins us from Indiana State University where she received her undergraduate degree and training under Dr. James Speer. She's been very helpful in the field and laboratory already, too, helping out on projects conducted at the TVA coal ask spill in Kingston, Tennessee and on wood collected from a drib dam in Fredericksburg, Virginia. For her master's project, Dorothy will be investigating the varying climate response of several hardwood tree species along an elevational gradient in Great Smoky Mountains National Park, Tennessee.


Sarah Jones

Sarah comes to us from our very own Department of Geography and she also worked as a laboratory assistant in the LTRS for over two years as an undergraduate. In 2011, she won the Michelle D. Pfeffer Outstanding Senior Award in our department. She spent three summers with us helping collect samples at El Malpais and El Morro National Monuments, and has assisted on many other projects already. For her master's project, Sarah is investigating the stand dynamics of the "pygmy forests" on the McCarty's Lava Flow at El Malpais, where she's already collected hundreds of cores from nearly 300 trees.


Alex Dye
Alex Dye

Alex comes to us from Tennessee Tech and has already been on numerous field trips held by the lab. His master's research will focus on the forests of Rainy Mountain in the Chattooga Ranger District of the Chattahoochee National Forest in northeastern Georgia. He'll be collecting cores from several hundred trees in numerous plots across the mountain, as well as fire-scarred pine sections, to learn more about the stand and disturbance history of the mountain.


Liz SchneiderLiz Schneider

Liz comes to us with a wealth of knowledge about dendrochronology, coming from the University of Oregon where as an undergraduate she studied with Dan Gavin and Aquila Flower where Liz gained considerable experience with tree-ring dating. Liz's master's research will follow a long line of students and be conducted in El Malpais National Monument, investigating the relationships between past fire activity and climate, especially for the last 200 years.


Maegen Rochner

Maegen comes to us from Indiana University-Southeast where she double-majored in English and Geology and earned a perfect 4.0 GPA. She wishes to capitalize on her geoscience training by using tree rings to learn more about earth surface processes. This semester, she will begin her masters project that will involve using tree-ring data to date historic and prehistoric debris flow events in the Anakeesta Ridge area of Great Smoky Mountains National Park in Tennessee.

 

Alumni of the Laboratory of Tree-Ring Science

Michael R. Armbrister, 2002. Changes in Fire Regimes and the Successional Status of Table Mountain Pine (Pinus pungens Lamb.) in the Southern Appalachians, USA. M.S. thesis, The University of Tennessee, Knoxville. 151 pp.

Elizabeth A. Atchley, 2004. The Effects of Habitat Alterations on Growth and Vitality of Torreya taxifolia Arn. in Northern Florida, U.S.A.: A Dendroecological Study. M.S. thesis, The University of Tennessee, Knoxville. 245 pp.

Christine P. Biermann, 2009. Twentieth Century Changes in the Climate Response of Yellow Pines in Great Smoky Mountains National Park, Tennessee, U.S.A. M.S. thesis, The University of Tennessee, Knoxville. 171 pp.
Jacob J. Cseke, 2003. A Dendroecological Approach for Dating Individual Small-scale Canopy Disturbance Events, Great Smoky Mountains National Park, Tennessee, USA. M.S. thesis, The University of Tennessee, Knoxville. 247 pp.
Georgina G. DeWeese, 2007. Past Fire Regimes of Table Mountain Pine (Pinus pungens Lamb.) Stands in the Central Appalachian Mountains, Virginia, U.S.A. Ph.D. dissertation, The University of Tennessee, Knoxville. 308 pp.
Ian C. Feathers, 2010. Fire History from Dendrochronological Analyses at Two Sites near Cades Cove, Great Smoky Mountains National Park, U.S.A. M.S. thesis, The University of Tennessee, Knoxville. 139 pp.
Niki A. Garland, 2013. A Dendroecological Evaluation of the Effects of Coal Ash on Tree Growth, Kingston Fossil Plant, Harriman, Tennessee, U.S.A. M.S. thesis, The University of Tennessee, Knoxville. 80 pp.
Grant L. Harley, 2012. Tree Growth Dynamics, Fire History, and Fire-Climate Relationships in Pine Rocklands of the Florida Keys, U.S.A. Ph.D. dissertation, The University of Tennessee, Knoxville. 232 pp.
Joseph P. Henderson, 2006. Dendroclimatological Analysis and Fire History of Longleaf Pine (Pinus palustris Mill.) in the Atlantic and Gulf Coastal Plain. Ph.D. dissertation, The University of Tennessee, Knoxville. 463 pp.
Lisa B. LaForest, 2012. Fire Regimes of Lower‐elevation Forests in Great Smoky Mountains National Park, Tennessee, U.S.A. Ph.D. dissertation, The University of Tennessee, Knoxville. 279 pp.
Evan R. Larson, 2005. Spatiotemporal Variations in Fire Regimes of Whitebark Pine (Pinus albicaulis Engelm.) Forests, Western Montana, USA, and Their Management Implications. M.S. thesis, The University of Tennessee, Knoxville. 232 pp.
Daniel B. Lewis, 2003. Fire Regimes of Forested Kipukas in El Malpais National Monument, New Mexico, U.S.A. M.S. thesis, The University of Tennessee, Knoxville. 145 pp.

Daniel B. Lewis, 2009. Deciphering Climate from the Characterization of Ring Width, Carbon, and Oxygen Isotopes in Latewood Tree-Ring Cellulose, Big Thicket National Preserve, Texas, U.S.A. Ph.D. dissertation, The University of Tennessee, Knoxville. 106 pp.
Nancy Li, 2011. Dendroclimatic Analysis of Oscillations for the Southeastern United States from Tree-Ring Network Data. M.S. thesis, The University of Tennessee, Knoxville. 190 pp.
David F. Mann, 2002. The Dendroarchaeology of the Swaggerty Blockhouse, Cocke County, Tennessee. M.S. thesis, The University of Tennessee, Knoxville. 139 pp.


David F. Mann, 2008. Treeline Responses to Climate Change in High-elevation Landscapes of Western Montana, U.S.A. Ph.D. dissertation, The University of Tennessee, Knoxville. 230 pp.
Alison C. Miller, 2007. Fire History of Caribbean Pine (Pinus caribaea var. bahamensis (Griseb.) W.H. Barrett & Golfari) Forests on Abaco Island, The Bahamas. M.S. Research Paper, The University of Tennessee, Knoxville. 84 pp.
Dana L. Miller, 2005. A Tree-ring Oxygen Isotope Record of Tropical Cyclone Activity, Moisture Stress, and Long-term Climate Oscillations for the Southeastern U.S. Ph.D. dissertation, The University of Tennessee, Knoxville. 169 pp.
Whitney L. Nelson, 2008. Assessing the Tree-ring Oxygen Isotope Hurricane Proxy along the Atlantic and Gulf Coastal Seaboards, U.S.A. Ph.D. dissertation, The University of Tennessee, Knoxville. 287 pp.
Alex Pilote, 2012. Interacting Effects of Fire Activity, Climate, and Habitat Diversity on Forest Dynamics, El Malpais National Monument, New Mexico, USA. M.S. thesis, The University of Tennessee, Knoxville. 100 pp.
William M. Reding, 2002. Assessment of Spatial and Temporal Patterns of Log Structures in East Tennessee. M.S. thesis, The University of Tennessee, Knoxville. 67 pp.
Monica T. Rother, 2010. Influences of Climate and Anthropogenic Disturbances on Wildfire Regimes of the Zuni Mountains, New Mexico, U.S.A. M.S. thesis, The University of Tennessee, Knoxville. 152 pp.
Jessica D. Slayton, 2010. Separating the Effects of Wildfires from Climate Response in Ponderosa Pine (Pinus ponderosa Douglas ex. C. Lawson), Central Idaho, U.S.A. M.S. thesis, The University of Tennessee, Knoxville. 124 pp.
Christopher A. Underwood, 2007. Century-scale Trends in Climatic Variability for the Pacific Northwest from Western Juniper (Juniperus occidentalis Hook. ssp. occidentalis) Tree-ring Data. M.S. thesis, The University of Tennessee, Knoxville. 211 pp.
 

Former and Current Undergraduate Assistants and Interns

We are proud that our current and former laboratory assistants and interns (65 total) represent a high level of diversity among under-represented groups (20 female assistants) and ethnic backgrounds (Hispanic, Chinese, Indian, and Middle Eastern descents).

  1. Bill Dennis (Fall 2001)
  2. Damian Kolbay (Fall 2001)
  3. Ryan Hove (Spring 2002)
  4. Justin Graham (Spring 2002)
  5. Jason Tankersley (Spring 2002)
  6. Chris Halcomb (Fall 2002)
  7. Ryan Justice (Fall 2002)
  8. Ashley Heaton (Spring 2003)
  9. Lindsay Criss (Spring 2003)
  10. Preston Roberts (Summer and Fall 2003)
  11. Darrin Thompson (Spring 2004)
  12. James Barnes (Spring 2004)
  13. Michelle Pfeffer (Summer 2004-Spring 2006)
  14. Scott Burgett (Fall 2005)
  15. Pamela Dalal (Fall 2005)
  16. Tim Green (Fall 2005-Summer 2006)
  17. Christian Vessels (Fall 2005-Spring 2006)
  18. Brian Watson (Fall 2005-Spring 2006)
  19. Jessie Lynne Donaldson (Spring 2006)
  20. Matt McConnell (Spring and Fall 2006)
  21. Andrew Gaskins (Fall 2006)
  22. Maggie Stevens (Summer 2006-Spring 2007)
  23. Ian Feathers (Fall 2006-Spring 2007)
  24. Travis Kilgore (Spring 2007)
  25. Philip White (Spring and Fall 2007)
  26. Jessica Pollock (Summer and Fall 2007)
  27. Chris Corliss (Fall 2007)
  28. Yashar Taleb-Haghipoor (Fall 2007)
  29. Kasra Taleb-Haghipoor (Fall 2007)
  30. Lucrecia Martinez (Fall 2007-Spring 2008)
  31. Kenric McCay (Fall 2007-Spring 2008)
  32. Milly Maples (Fall 2007-Spring 2008)
  33. Nicole Samu (Fall 2007-Spring 2008)
  34. Barry Gibbs (Spring 2008)
  35. Kevin Patrick Russell (Summer 2008-Fall 2009)
  36. Sarah Grady (Fall 2008)
  37. Brad Yarger (Fall 2008)
  38. Alexander Pooler (Fall 2008)
  39. Josh Brown (Fall 2008)
  40. Ruby Munoz (Fall 2008-Spring 2009)
  41. Matthew McDonnell (Summer 2009)
  42. Matthew Peterson (Fall 2009)
  43. Noah Newport (Fall 2009)
  44. Jennifer White (Fall 2009-Spring 2010)
  45. Kody Honeyman (Fall 2009-Spring 2010)
  46. Scott Basford (Spring and Fall 2010)
  47. Haley Capel (Fall 2010)
  48. Rachel Smith (Summer 2010)
  49. Niki Garland (Summer 2009-Summer 2010)
  50. Chris Petruccelli (Spring 2010-Fall 2012)
  51. Sarah Jones (Summer 2009-Summer 2011)
  52. Josh Turner (Summer 2010-Spring 2011)
  53. Stephanie Stampfli (Spring 2011)
  54. Maria Owens (Summer 2011-Spring 2012)
  55. James Ensley (Fall 2011)
  56. Ebony Lemons (Fall 2011)
  57. Matthew Hamilton (Fall 2011)
  58. Richard Merino (Spring 2012)
  59. Dakota Anderson (Spring 2012)
  60. Luke Wylie (Fall 2012)
  61. Bryson Conner (Fall 2012)
  62. Brandon Corrier (Spring 2013)
  63. Alex Collier (Spring 2013)
  64. Grant Wilder (Spring 2013)
  65. Chaney Swiney (Spring 2013)

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The flagship campus of the University of Tennessee System