Fire Ecology Presentations

    Capture-monitor.PNGClimate Change? Shortened Fire Return Intervals in Alaska Boreal Forests & Tundra
    Jennifer Barnes
    NPS Science for Lunch Lecture: April 8, 2014
    Links & Download:  Link to Webinar Recording

    Jennifer Barnes, Regional Fire Ecologist for the National Park Service (NPS) in Alaska shared information about fire regime and fire return intervals using plot data and photos from NPS long-term monitoring plots around the state. She shared examples of short fire return intervals in Denali National Park, Yukon-Charley Rivers in the east, and Noatak tundra fires in the west, while discussing the response of different trees and vegetation and implications for climate change.

    Picture1.pngLong-Term Impacts of Boreal Wildfire on Carbon Cycling Dynamics In Interior Alaska
    Benjamin V. Gaglioti
    Webinar: December 4, 2013
    Links & Download:  Link to Webinar Recording

    Wildland fire is a major disturbance in the boreal forest, and warming climate will likely increase the frequency and severity of burning. Fires trigger thermokarst, the thawing of permafrost, which can release large amounts of ancient carbon to the atmosphere. But how vulnerable is the organic carbon stored in permafronst in the boreal forest to a changing fire regime? Here we present a whole-watershed summary of terrestrial and aquatic carbon dynamics during multiple fire and thermokarst disturbances over the last millennia.

    hollingsworth_anaktuvukearlyresults_1.jpgEarly Results from the Anaktuvuk River Fire: How Similar are the Arctic and Boreal Forest?
    Teresa Hollingsworth
    Meeting: FETG 2009 Spring Meeting
    Download: Presentation Slides (pdf; 4.0 MB)

    Post-burn data from the 2007 Anaktuvuk River Fire has been analyzed and compared to boreal forest post-fire effects.

    johnstone_firedynamics.jpgFire and Forest Dynamics in Northern Boreal Forests
    Presenter: Jill Johnstone
    Meeting: October 2010 Webinar
    Downloads: Presentation Slides (pdf; 5.1 MB), Webinar Recording (wmv; 70 MB)

    Current changes in climate are likely to cause changes to the fire regime in Alaska and other boreal regions. How are projected changes in fire regime likely to affect the composition of boreal forests? This presentation summarizes research in interior Alaska and adjacent Yukon Territory that examines how changes in fire severity and frequency may shape future forest dynamics.

    hollingsworth_ccandsuccession.jpgImpacts of Climate Change and Shifting Fire Regime on Boreal Post-Fire Successional Trajectory
    Presenter: Teresa Hollingsworth
    Meeting: 2010 JFSP Board Visit
    Download: Presentation Slides (pdf; 2.4 MB), Recording (wmv; 9.3 MB)

    Fire acts as a catalyst and a driver of change. There is a very critical and sensitive post-fire window where fire severity strongly affects seedling recruitment patterns.  Climate change could tip this sensitive transition and impact the dominate vegetation type on a large scale.

    barnes_tundrafireregimes.jpgReconstructing Fire Regimes in Tundra Ecosystems
    Presenter: Jennifer Barnes
    Meeting: 2010 JFSP Board Visit
    Downloads: Presentation Slides (pdf; 3.1 MB), Download recording (wmv; 13.3 MB)

    Charcoal deposits collected from lake sediment in Noatak and the Seward Peninsula were used to quantify fire return intervals in tundra ecosystems and examine the relationships between fire, vegetation, and climate.

    murphy_grasslanddominance2009.jpgThe Potential Role of Grasslands in the Future Vegetation of Interior Alaska
    Presenter: Karen Murphy for Paul Duffy
    Meeting: FETG 2009 Spring Meeting
    Download: Presentation Slides (pdf; 1.6 MB)

    The goal of this proposed project is to estime the disturbance regime and environmental conditions that would result in dominance of grassland at roughly one square kilometer spatial resolution.

    higuera_tundrafireregimes.jpgTundra Fire Regimes of Alaska: The Holocene Perspective
    Presenter: Philip Higuera
    Meeting: 2009 Workshop
    Download: Presentation Slides (pdf; 28.9 MB)

    Evidence from charcoal and pollen found in lake sediments suggest that increased climate drying along with greater shrub dominance will likely increase fire frequency in tundra ecosystems.

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