Papers by Trisalyn Nelson
Published by forrex forum for research and extension in Natural resources
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Conservation Physiology, 2014
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Canadian Journal of Remote Sensing, 2014
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The Journal of Wildlife Management, 2015
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Ecological Processes, 2012
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Journal of exposure science & environmental epidemiology, Jan 25, 2015
Radon is a carcinogenic radioactive gas produced by the decay of uranium. Accumulation of radon i... more Radon is a carcinogenic radioactive gas produced by the decay of uranium. Accumulation of radon in residential structures contributes to lung cancer mortality. The goal of this research is to predict residential radon vulnerability classes for the province of British Columbia (BC) at aggregated spatial units. Spatially referenced indoor radon concentration data were partitioned into low, medium, and high classes of radon vulnerability. Radon vulnerability classes were then linked to environmental and housing data derived from existing geospatial datasets. A Balanced Random Forests algorithm was used to model environmental predictors of indoor radon vulnerability and values at un-sampled locations across BC. A model was generated and evaluated using accuracy, precision, and kappa statistics. The influence of predictor variables was investigated through variable importance and partial dependence plots. The model performed 34% better than a random classifier. Increased probabilities of...
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Journal of Biogeography, 2014
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In western Canada, the current outbreak of mountain pine beetle (Dendroctonus ponderosae) is of u... more In western Canada, the current outbreak of mountain pine beetle (Dendroctonus ponderosae) is of unprecedented proportions. Annual aerial overview surveys (AOS) are the primary means of accounting for the area and severity of mountain pine beetle impacts. Typically, reports of impacted areas do not consider severity—the proportion of trees killed within a given area. A common misconception is that all
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Canadian Journal of Remote Sensing, 2014
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Applied Geography, 2015
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Annals of GIS, 2015
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Papers by Trisalyn Nelson