Disturbances: Fire and Beetle Climate Space Fire Regimes

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Disturbances: Fire and Beetle

Climate Space Fire Regimes: Informing LCC Design now and in the future

Goal: Overlay current GNLCC projects with climate domains and fire databases to pinpoint restoration/mitigation treatments

Methodology o Define Climate Domains—condensed using PCA (latitudinal-temperature and longitudinal-precipitation gradient) o Characterize the current fire space—where and when do they occur within climate domains and describe by frequency and size class o Use this analysis to place into climate change scenario context and provide pathways for future mitigation and adaptation efforts

Historical Weather Data Clustering for Scenario-based fire simulation

Goal: Develop a dynamic fire management plan that incorporates historical weather and climate data to simulate fire behavior—Done through scenario trees, and hierarchical clustering, and including forecast errors

Methodology o Scenario Trees—scenarios and probabilities of how/where fire will spread, and characterize fire behavior as mild-moderate-extreme based on those probabilities o Forecast Errors: Variables to Include in estimates:

 Temperature, relative humidity, wind speed, and wind direction

 Historical data to build into forecast models

 Incorporates Euclidian distance o Ordering Historical weather data from least severe to most severe o Hierarchical Clustering: Conditional Probabilities

 Provides outputs of distribution of variables

 Counts and records the probabilities of certain conditions (severity) as a function of variables (t, rh, wd, ws)

Conclusion—uses historical weather data to support management decisions on the ground with a limited budget

Relating Severity of a Mountain Pine Beetle (MPB) Outbreak to Forest Management

Use geospatial tools and boosted regression trees to examine effect of historical harvesting decisions on spatial extent and severity of beetle-killed stands in Fraser Experimental Forest

Methodology o Map Severity

 14 experimental plots, allometric equations and RS/GIS o Examine how harvest impacted outbreak o DV—Measured outbreak severity dead/total basal area across Fraser Experimental Forest o IV—Used boosted regression trees to test effect of aspect, slope, elevation, forest management to severity

Conclusions—Management decisions made decades before outbreak were an effective defense against MPB, however a no action alternative may need to be considered

Effects of MPB on water quality

Goals: Identify appropriate modes of communication and knowledge transfer across scientists, water providers, managers, and the public; translating research to action on the ground

Collected data by diverse means, i.e. randomized household survey to communities across Front Range and

Survey elicitation of experts to understand values, perceptions and needs regarding MPB and water quality

Conclusions o Limited levels of knowledge, challenges to knowledge transfer o Identification of concerns, information needs and outreach needs—sources of info—media neighbors, and USFS o Knowledge transfer improved by increased communication—opportunities for cross-jurisdictional communication via collaboration

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