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Dr. Winslow D. Hansen

Forest Ecologist | PhD, University of Wisconsin, Madison

forest ecology, social-ecological resilience, natural disturbance

845 677-7600 x138

Forests influence climate and sustain life globally. Trees sequester carbon emissions that cause climate warming, support much of the planet’s biodiversity, and provide essential services such as fuel, food, and clean water and air. Due to climate change, increasing disturbances, and deforestation, many forests are threatened. Winslow Hansen works to understand where and why forests are at risk, and how we can avoid catastrophic losses.

Hansen uses experiments and field observation to reveal how forests are responding to environmental change. He is also developing novel techniques that integrate remote sensing and computer simulations to model forest response – scaling from individual trees up to entire biomes. Together, these complementary approaches paint a picture of current and future forest health across backyards, watersheds, and the planet.

This science is relevant to managers and policy makers tasked with stewarding forests during a time of profound change. Hansen often brings stakeholders into his research process so that results are immediately injected into decision making. For instance, Hansen worked with managers at Grand Teton National Park to evaluate whether different management strategies might reduce wildfire risk to people and help conserve some of America’s last remaining wildlands. Hansen is building on this work to determine where people and forests may be most threatened by fires across the western United States, including California.

Hansen, Winslow D., Meg A. Krawchuk, Anna T. Trugman, and Park Williams. 2022. “The Dynamic Temperate And Boreal Fire And Forest-Ecosystem Simulator (Dynafforest): Development And Evaluation”. Environmental Modelling &Amp; Software 156. Elsevier BV: 105473. doi:10.1016/j.envsoft.2022.105473.
Gill, NS, MG Turner, CD Brown, SI Glassman, SL Haire, Winslow D. Hansen, ER Pansing, SB St Clair, and DF Tomback. 2022. “Limitations To Propagule Dispersal Will Constrain Postfire Recovery Of Plants And Fungi In Western Coniferous Forests”. Bioscience. doi:10.1093/biosci/biab139.
Hansen, Winslow D., Ryan Fitzsimmons, Justin Olnes, and Park Williams. (2021) 2021. “An Alternate Vegetation Type Proves Resilient And Persists For Decades Following Forest Conversion In The North American Boreal Biome”. Journal Of Ecology 109 (1): 85-98. doi:
Abatzoglou, JT, DS Battisti, AP Williams, Winslow D. Hansen, BJ Harvey, and CA Kolden. (NOV 2) 2021. “Projected Increases In Western Us Forest Fire Despite Growing Fuel Constraints”. Communications Earth & Environment 2 (1). doi:10.1038/s43247-021-00299-0.
Hansen, Winslow D., Diane Abendroth, Werner Rammer, Rupert Seidl, and Monica G. Turner. (2020) 2020. “Can Wildland Fire Management Alter 21St-Century Subalpine Fire And Forests In Grand Teton National Park, Wyoming, Usa?”. Ecological Applications 30 (2). doi:10.1002/eap.2030.
Hoecker, Tyler J., Winslow D. Hansen, and Monica G. Turner. (2020/12/15/AD) 2020. “Topographic Position Amplifies Consequences Of Short-Interval Stand-Replacing Fires On Postfire Tree Establishment In Subalpine Conifer Forests”. Forest Ecology And Management 478: 118523+. doi:
Albrich, Katharina, Werner Rammer, Monica G. Turner, Zak Ratajczak, Kristin H. Braziunas, Winslow D. Hansen, and Rupert Seidl. (2020) 2020. “Simulating Forest Resilience: A Review”. Global Ecology And Biogeography 29 (12): 2082-2096. doi:
Seidl, Rupert, Juha Honkaniemi, Tuomas Aakala, Alexey Aleinikov, Per Angelstam, Mathieu Bouchard, Yan Boulanger, et al. (2020) 2020. “Globally Consistent Climate Sensitivity Of Natural Disturbances Across Boreal And Temperate Forest Ecosystems”. Ecography 43 (7): 967-978. doi:
Turner, Monica G., Kristin H. Braziunas, Winslow D. Hansen, and Brian J. Harvey. (2019/06/04/AD) 2019. “Short-Interval Severe Fire Erodes The Resilience Of Subalpine Lodgepole Pine Forests”. Proceedings Of The National Academy Of Sciences 116 (23): 11319-11328. doi:
Hansen, Winslow D., and Monica G. Turner. (2019) 2019. “Origins Of Abrupt Change? Postfire Subalpine Conifer Regeneration Declines Nonlinearly With Warming And Drying”. Ecological Monographs 89 (1). doi:
Morris, J.L., S. Cottrell, C.J. Fettig, R.J. DeRose, K.M. Mattor, V.A. Carter, J. Clear, et al. (2018) 2018. “Bark Beetles As Agents Of Change In Social–Ecological Systems”. Frontiers In Ecology And The Environment 16. doi:
Braziunas, Kristin H., Winslow D. Hansen, Rupert Seidl, Werner Rammer, and Monica G. Turner. (2018/12/15/AD) 2018. “Looking Beyond The Mean: Drivers Of Variability In Postfire Stand Development Of Conifers In Greater Yellowstone”. Forest Ecology And Management 430: 460-471. doi:
Hansen, Winslow D., J.P. Scholl, A.E. Sorensen, K.E. Fisher, J.A. Klassen, L. Calle, G.S. Kandlikar, et al. (2018) 2018. “How Do We Ensure The Future Of Our Discipline Is Vibrant? Student Reflections On Careers And Culture Of Ecology:”. Ecosphere 9 (2). doi:
Hansen, Winslow D., Kristin H. Braziunas, Werner Rammer, Rupert Seidl, and Monica G. Turner. (2018/04/AD) 2018. “It Takes A Few To Tango: Changing Climate And Fire Regimes Can Cause Regeneration Failure Of Two Subalpine Conifers”. Ecology 99 (4): 966-977. doi:
Rose, K.C., R.A. Graves, Winslow D. Hansen, B.J. Harvey, J. Qiu, S.A. Wood, C. Ziter, and M.G. Turner. (2017) 2017. “Historical Foundations And Future Directions In Macrosystems Ecology”. Ecology Letters 20 (2). doi:
Morris, Jesse L, Stuart Cottrell, Christopher J Fettig, Winslow D. Hansen, L Sherriff, Vachel A Carter, Jennifer L Clear, et al. (2016) 2017. “Managing Bark Beetle Impacts On Ecosystems And Society : Priority Questions To Motivate Future Research”. Journal Of Applied Ecology 54 (3): 750-760. doi:
Brinkman, T.J., Winslow D. Hansen, F.S. Chapin, G. Kofinas, S. BurnSilver, and T.S. Rupp. (2016) 2016. “Arctic Communities Perceive Climate Impacts On Access As A Critical Challenge To Availability Of Subsistence Resources”. Climatic Change 139 (3-4). doi:
Hansen, Winslow D., Stuart Chapin, Helen T Naughton, Scott Rupp, and David Verbyla. (2016) 2016. “Forest-Landscape Structure Mediates Effects Of A Spruce Bark Beetle ( Dendroctonus Rufipennis ) Outbreak On Subsequent Likelihood Of Burning In Alaskan Boreal Forest”. Forest Ecology And Management 369: 38-46. doi:
Brinkman, Todd, Winslow D. Hansen, Stuart Chapin, Shauna BurnSilver, and Scott Rupp. (2016) 2016. “Perceptions Of Climate Impacts On The Availability Of Subsistence Resources In The Arctic: Importance Of Access”. Climatic Change 139: 413-427. doi:
Hansen, Winslow D., W.H. Romme, A. Ba, and M.G. Turner. (2016) 2016. “Shifting Ecological Filters Mediate Postfire Expansion Of Seedling Aspen (Populus Tremuloides) In Yellowstone”. Forest Ecology And Management 362: 218-230. doi: