Research Interests: I am broadly interested in landscape ecology, vegetation ecology, plant community ecology and statistical applications in ecology. In particular, I am interested in vegetation patterns across large spatial scales. This includes understanding environmental gradients associated with changes in species composition and vegetation change over time as it relates to succession, disturbance, and potential changes in climate.

Current Research Programs:
1) Long-term ecological research (LTER),
2) Vegetation mapping of BNZ and CPCRW,
3) Circumboreal vegetation mapping,
4) Plant community regeneration and successional trajectories following fire,

Examples of Research Support:
"Managing fire with fire in Alaskan black spruce forests: Impacts of fire severity on successional trajectory and future forest flammability", USDI/USDA Joint Fire Sciences Program, $467,026.00, 2005-2007

"Changing Boreal Forest: Resilience and Vulnerability", National Science Foundation- Long-Term Ecological Research Program, $1.6 million (one of 26 Senior Investigators), 2004-2006

"Landscape fragmentation and Forest Fuel Load Accumulation", Cooperative Research agreement between SALRM and IITF USDA Forest Service, $24,000, 2002-2004

Examples of Publications:
Hollingsworth, T.N., M.D. Walker, F.S. Chapin III, and A. Parsons (submitted). Scale dependent controls over species composition in black spruce communities. Canadian Journal of Forest Research.

Hollingsworth, T.N., E.A.G. Schuur, F.S. Chapin III, and M.D. Walker (in prep). The role of plant community composition as a predictor of regional soil carbon storage in the boreal black spruce ecosystem. Ecological Applications.

Chapin, F.S. III, T.N. Hollingsworth, D.F. Murray, L.A. Viereck, and M.D. Walker. (in press). Chapter 6. Floristic Diversity and Distribution in Alaska's Boreal Forest in M. Oswood, F.S. Chapin III, editors. Alaska's Changing Boreal Forest. Oxford University Press, Oxford.

Walker, D.A., N.A. Auerbach, T.K. Nettleton, A.Gallant, and S.M. Murphy. August, 1997. Arctic System Science Flux Study Data Report. Happy Valley Permanent Vegetation Plots: site factors, physical and chemical soil properties, plant species cover, photographs, soil descriptions and ordination. Tundra Ecosystems Analysis and Mapping Laboratory, University of Colorado.