Teresa Hollingsworth

Acting Director and Program Manager


Email: teresa.hollingsworth@usda.gov
Phone: (406) 542-4199
Fax: (406) 542-4196

790 East Beckwith Avenue
Missoula, Montana 59801

Curriculum Vitae


Ph.D Biological Sciences, 2004 – University of Alaska Fairbanks, Fairbanks AK. Dissertation: Quantifying variability in the Alaskan black spruce ecosystem: Linking vegetation, carbon, and fire history. 

M.Sc Biological Sciences, 2000- Lancaster University, Lancaster England Thesis: The role of soil amino acids in the structure and functioning of upland grasslands in Great Britain. 

B.A. Environmental, Population and Organismic Biology, 1997- University of Colorado Boulder, Boulder CO.


Teresa is a plant community and disturbance ecologist, who is the Deputy Director of the Aldo Leopold Wilderness Research Institute. She came to ALWRI from PNW Research Station, where she spent 20 years as a Research Ecologist, Team Leader of the Boreal Ecology Team, and Forest Director for Bonanza Creek Experimental Forest. She has extensive research, service and leadership experience including serving as Co-PI on the Bonanza Creek Long-Term Ecological Research (LTER) Program, Acting Program Manager for the Ecosystems Process and Function Program at PNW Research Station, U.S. Representative on the International Boreal Ecology Association Leadership Council, and co-advising over 15 masters and PhD students. Scientifically, she is broadly interested in understanding environmental gradients associated with changes in species composition, vegetation change over time as it relates to succession, disturbance, and potential changes in climate. Teresa is committed to outreach and education as it relates to wilderness science and has also had the privilege of involvement in a variety of education and outreach programs, including a science camp for foster children and other kids in state care called “Fostering Science”, and a collaborative knowledge exchange with artists called “In a Time of Change”.

To learn more about Teresa's research, visit her Research Information Tracking System page on the USDA FS website.

Selected publications


Grzesik, E., T.N. Hollingsworth, R.W. Ruess, and M.R. Turetsky (2022). Fuel loads and plant traits as community-level predictors of emergent properties of vulnerability and resilience to a change fire regime in black spruce forest of boreal Alaska. JGR Biogeosciences 127 e2021JG006696. https://doi.org/10.1029/2021JG006696

Hollingsworth, T.N., A.L. Breen, R.E. Hewitt, and M.C. Mack (2021). Does fire always accelerate shrub expansion in Arctic Alaska tundra? Examining a novel grass-dominated successional trajectory on the Seward Peninsula. Arctic Alpine and Antarctic Research 53:1 93-109 https://doi.org/10.1080/15230430.2021.1899562 (won 2021 Editor’s Choice Award)

Houseman, B.H., R.W. Ruess, T.N. Hollingsworth, and D. Verbyla (2020). Can Siberian postfire Alder N-fixation offset N-loss in severe fires in boreal Alaska? Quantifying post-fire Siberian alder distribution, growth, and nitrogen-fixation in two burn scars in the Yukon-Tanana ecoregion. PLoS One 15(9): e0238004 https://doi.org/10.1371/journal.pone.0238004

Hewitt, R.E., F.S. Chapin III, T.N. Hollingsworth, M.C. Mack, A.V. Rocha, and D.L. Taylor (2020). Limited overall impacts of ectomycorrhizal inoculation on recruitment of boreal trees into Arctic tundra following wildfire belie species-species responses. PLoS One 15(7): E0235932 https://doi.org.10.1371/journal.pone.0235932

Johnstone, J.F., G. Celis, M.C. Mack, F.S. Chapin III, T.N. Hollingsworth, M. Jean (2020). Factors shaping alternate successional trajectories in burned black spruce forests of Alaska. Ecosphere 11(5): e03129. 10.1002/ecs2.3129

Cold, H.S., T.J. Brinkman, T.J, C.L. Brown, T.N. Hollingsworth, D.L. Verbyla, K.M. Heeringa, and D.R.N Brown (2020). Assessing vulnerability of subsistence travel to effects of environmental change in Interior Alaska. Ecology and Society 25(1):20. https://doi.org/10.5751/ES-11426-250120

Julianus, E.L, T.N. Hollingsworth, A.D. McGuire, and K. Kielland (2019). Moose (Alces alces) browse availability and use in response to post-fire succession on Kanuti National Wildlife Refuge, Alaska. Alces 55: 67-89.

Brown, D.R.N, T.J. Brinkman, D.L. Verbyla, H. Cold. C. Brown, and T.N. Hollingsworth (2018). Changing river ice seasonality and impacts on interior Alaskan communities. Weather, Climate, and Society 10(4): doi 10.1175/WCAS-D-17-0101.1

Cahoon, S.M.P, P.F. Sullivan, A.H. Brownlee, R.R. Pattison, H-E Andersen, K. Legner, T.N. Hollingsworth (2018). Contrasting drivers and trends of boreal tree growth: implications for a biome shift in interior Alaska. Ecology 99(6): doi 10.1002/ecy.2223

Hewitt, R.E., T.N. Hollingsworth, F.S. Chapin III, and D.L. Taylor (2017). The potential for mycobiant sharing between shrubs and seedlings to facilitate tree establishment after wildfire at Alaska arctic treeline. Molecular Ecology 2017: 1-13 DOI: 10.1111/mec.14143

Winterstein, M., T.N. Hollingsworth, and C. Parker (2016). A range extension of Carex sartwellii in interior Alaska. Canadian Field Naturalist 130(3): 191-198.

Sullivan, P.F., R.R. Pattison, A.H. Brownlee, and T.N. Hollingsworth (2016). Effect of tree-ring detrending method on apparent growth trends of black and white spruce in interior Alaska. Environmental Research Letters 11: 114007 doi:10.1088/1748-9326/11/11/114007

Chapin III, F.S., A.J Conway, J. Johnstone, T.N. Hollingsworth, and J. Hollingsworth (2016). Absence of net long-term successional facilitation by alder in a boreal Alaska floodplain. Ecology DOI: 10.1002/ecy.1529

Abbott, B.W., J.B. Jones, E.A.G. Schuur, F.S. Chapin III, W.B. Bowden, M.S. Bret-Harte, H.E. Epstein, M.D. Flannigan, T.K. Harms, T.N. Hollingsworth, M.C. Mack, A.D. McGuire, S.M. Natali, A.V. Rocha, S.E. Tank, M.R. Turetsky, J.E. Vonk, K.P. Wickland, and the Permafrost Carbon Network. (2016). Can increased biomass offset carbon release from permafrost region soils, streams and wildfire? An expert assessment. Environmental Research Letters 11(3): 034014

Hewitt, R.E., A.P. Bennett, A.L. Breen, T.N. Hollingsworth, D.L. Taylor, F.S. Chapin III and T.S. Rupp (2015). Getting to the root of the matter:  landscape implications of plant-fungal interactions for tree migration in Alaska. Landscape Ecology 31: 895-911.

Taylor, D. L., T.N. Hollingsworth, J. McFarland, N. Lennon, C. Nusbaum, and R.W. Ruess. (2014). A first comprehensive census of fungi in soil reveals both hyperdiversity and fine-scale niche partitioning. Ecological Monographs 84(1): 3-20.

Spellman, K.V., C.P.H. Mulder, and T.N. Hollingsworth (2014). Susceptibility of burned black spruce (Picea mariana) forests to non-native plant invasions in interior Alaska. Biological Invasions doi:10.1007/s10530-013-0633-6

Hollingsworth, T.N., J.F. Johnstone, E.L. Bernhardt, and F.S Chapin III (2013). Fire severity filters regeneration traits to shape community assembly in Alaska’s boreal forest. PLoS One 8(2): e56033. doi:10.1371/journal.pone.0056033.

Thompson, J, A. Weik, F. Swanson, S. Carpenter, N. Fresco, T. Hollingsworth, T. Spies, and D. Foster (2012). Scenario studies as a synthetic and integrative research activity for LTER. Bioscience 62(4): 367-376.

Wolken, J.M., T.N. Hollingsworth, T.S. Rupp, F.S. Chapin III, S. F. Trainor, et al. (2011). Evidence and implications of projected climate change on Alaska’s forest ecosystems. Ecosphere 2(11): 124. doi:10.1890/ES11-00288.1.

Mack, M.C., M.S. Bret-Harte, T.N. Hollingsworth, R.R. Jandt, E.A.G. Schuur, G.R. Shaver, D.L. Verbyla. (2011). Climate warming and novel disturbance in arctic tundra: carbon and nitrogen emissions from a large wildfire and its consequences for ecosystem structure. Nature 45: 489-492.

Nossov, D.R., T.N. Hollingsworth, R.W. Ruess, and K. Kielland (2011). Development of Alnus tenuifolia stands on an Alaskan floodplain: patterns of recruitment, disease, and succession. Journal of Ecology 99: 621-633 doi: 10.1111/j.1365-2745.2010.01792.x.

Bernhardt, E.L, T.N. Hollingsworth, and F.S. Chapin III (2011). Fire severity mediates climate-driven shifts in understory composition of black spruce stands of interior Alaska. Journal of Vegetation Science 22: 32-44.

Hollingsworth, T.N, A.H. Lloyd, D.R Nossov, R.W. Ruess, B.A. Charlton, and K. Kielland (2010).  Twenty-five years of vegetation change along a putative successional chronosequence on the Tanana River, Alaska. Canadian Journal of Forest Research 40: 1273-1287 doi:10.1139/X10-094.

Johnstone, J.F., T.N. Hollingsworth, F.S Chapin III, M.C. Mack (2010). Changes in fire regime break the legacy lock on successional trajectories in Alaskan boreal forest. Global Change Biology doi: 10.1111/j.1365-2486.2009.02051.x.

Hollingsworth, T.N., E.A.G. Schuur, F.S. Chapin III, and M.D. Walker (2008). Plant community composition as a predictor of regional soil carbon storage in the boreal black spruce ecosystem.  Ecosystems 11(4): 629-642.

Hollingsworth, T.N., M.D. Walker, F.S. Chapin III, and A. Parsons (2006). Scale-dependent environmental controls over species composition in Alaskan black spruce communities. Canadian Journal of Forest Research 36: 1781-1796.

(book chapters)

Hollingsworth, T.N., R.E. Hewitt, and J.F. Johnstone. (2019). Chapter 4. Biological Drivers: Vegetation Composition Change in A. Robertson, E. Schroff, C. Markon, J. DeLapp, P. Burton, D. Reid, and V. Barber, editors.  Drivers of Landscape Change in the Northwest Boreal Region of North America: Impacts on Natural Resources, Ecosystems, and Communities. University of Alaska Press, Fairbanks.

Johnstone, J.F., X. Walker, and T.N. Hollingsworth. (2019). Chapter 2. Natural and Disturbance Drivers: Wildfires in A. Robertson, E. Schroff, C. Markon, J. DeLapp, P. Burton, D. Reid, and V. Barber, editors.  Drivers of Landscape Change in the Northwest Boreal Region of North America: Impacts on Natural Resources, Ecosystems, and Communities. University of Alaska Press, Fairbanks.

Peterson, D.L., J.M. Wolken, T.N. Hollingsworth, C.P. Giardina, J.S. Littell, L.A. Joyce, C.W, Swanston, S.D. Handler, L.E. Rustad, and S.G. McNulty. (2014). Chapter 6. Regional Highlights of Climate Change in D.L. Peterson, J.M. Vose, T. Patel-Weynand, editors, Advances in Global Change Research Volume 7: Climate Change and United States Forests. Springer, Dordrecht.

Chapin, F.S. III, T.N. Hollingsworth, D.F. Murray, L.A. Viereck, and M.D. Walker. (2006). 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.

(technical reports)

Hayward, G.D., S. Colt, M.L. McTeague, and T.N. Hollingsworth (eds) (2017) Climate change vulnerability assessment for the Chugach National Forest and the Kenai Peninsulta. Gen. Tech. Rep. PNW-GTR-950. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 368 p.

Maines, K.L., J.W. Harden, and T.N. Hollingsworth (2014). Soils, vegetation, and woody debris data from the 2001 Survey Line fire and a comparable unburned site. U.S. Geological Survey Open File Report 2014-1049. 36 p. http://pubs.usgs.gov/of/2014/1049/ .

Johnstone, J. F., T.N. Hollingsworth, and F.S. Chapin III (2008).  A key for predicting postfire successional trajectories in black spruce stands of interior Alaska.  Gen. Tech. Rep. PNW-GTR-767. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 37 p.

Hollingsworth T.N. (2008). Exploring the Alaskan Black Spruce Ecosystem: Variability in Species Composition, Ecosystem Function, and Fire History. (2008). Proceedings of the Fourth International Workshop Conservation of Arctic Flora and Fauna (CAFF) Flora Group. CAFF Technical Report No. 15, September 2008.