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

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Show simple item record Hansen, Winslow D. 2018-04-03T23:20:09Z 2018-04-03T23:20:09Z 2013-05
dc.description Thesis (M.S.) University of Alaska Fairbanks, 2013 en_US
dc.description.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. en_US
dc.description.tableofcontents 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. en_US
dc.language.iso en_US en_US
dc.subject Human ecology en_US
dc.subject Alaska, Southcentral en_US
dc.subject Taiga ecology en_US
dc.subject Ecological disturbances en_US
dc.subject Environmental degradation en_US
dc.subject Nature en_US
dc.subject Effect of human beings on en_US
dc.subject Wildfires en_US
dc.subject Forest fires en_US
dc.subject Taigas en_US
dc.subject Ecology en_US
dc.subject Spruce bark beetles en_US
dc.title Linked disturbance interactions in South-Central Alaska: implications for ecosystems and people en_US
dc.type Thesis en_US ms en_US
dc.identifier.department Department of Forest Sciences en_US

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