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    Linked disturbance interactions in South-Central Alaska: implications for ecosystems and people

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    Author
    Hansen, Winslow D.
    Keyword
    Human ecology
    Alaska, Southcentral
    Taiga ecology
    Ecological disturbances
    Environmental degradation
    Nature
    Effect of human beings on
    Wildfires
    Forest fires
    Taigas
    Ecology
    Spruce bark beetles
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    Metadata
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    URI
    http://hdl.handle.net/11122/8246
    Abstract
    Communities and ecosystems in the Alaskan boreal forest are undergoing substantial change. People contribute to this change. They are also impacted by the consequences. For example, wildfire and spruce bark beetle (Dendroctonus rufipennis) outbreaks have increased in frequency and severity due to warming trends, affecting the ecosystem and services important to people. I conducted a study to explore the social and ecological implications of changing natural disturbances. I evaluated how the occurrence of spruce bark beetle outbreak has altered the probability of wildfire between 2001 and 2009 on the Kenai Peninsula, Alaska. Modeling the effects of bark beetle outbreak on the probability of large wildfire (> 500 ha) and small wildfires (<500 ha), I found that the influence of the outbreak differed as a function of wildfire size. The occurrence and length of outbreak increased large wildfire probability. Small wildfires were mediated by human influence and less so by bark beetle outbreak. I also used spatial econometric techniques to estimate how wildfires and the bark beetle outbreak affected property values on the Kenai Peninsula in 2001 and 2010. I found that wildfires> 3.3 ha and the bark-beetle outbreak increased property values. Wildfires <3.3 ha decreased property values.
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 2013
    Table of Contents
    Chapter 1. General introduction -- Chapter 2. Linked disturbance interactions in South-Central Alaska: the effects of a spruce bark beetle (Dendroctonus rufipennis) outbreak on a changing boreal wildfire regime -- Chapter 3. The effects of a spruce bark beetle outbreak and wildfires on property values in the wildland-urban interface of South-central, Alaska, USA -- 4. General conclusions.
    Date
    2013-05
    Type
    Thesis
    Collections
    Forest Sciences

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