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Modern fire regime approximates historical fire regime in a forest on tribal lands
Presented by Amanda STAN on 16 May 2013 from 09:00 to 09:20
Type: Oral Presentation
We examined the surface fire regime in a ponderosa pine-dominated forest on the Hualapai tribal lands in Arizona. Using 113 fire-scarred trees from five 25-ha sites, we inferred spatio-temporal attributes and regulators of the fire regime over three land-use periods (historical, suppression, modern) between 1702 and 2007. Fire frequency and synchroneity patterns were similar, but fire seasonality was dissimilar, between the historical and modern periods. Statistical models identified a suite of variables representing climate, fuels, and human land uses that were associated with the probability of a site burning over time. Results suggest that the current fire regime in our study area, which predominately consists of prescribed fires implemented since the 1960s, approximates the past frequent surface fire regime that occurred here and in similar forest types on non-tribal lands in the southwestern United States. These results may be useful for informing management in the region as climate warms.