T.W. Swetnam, Laboratory of Tree-Ring Research

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Presentation transcript:

T.W. Swetnam, Laboratory of Tree-Ring Research Falk et al. 2011 Frontiers Ecol & Environ. T.W. Swetnam, Laboratory of Tree-Ring Research

T.W. Swetnam, Laboratory of Tree-Ring Research Fire Scar! T.W. Swetnam, Laboratory of Tree-Ring Research

T.W. Swetnam, Laboratory of Tree-Ring Research Fire-scarred trees can be reliable recorders of low to moderate intensity fires, and in some circumstances high intensity fires as well. T.W. Swetnam, Laboratory of Tree-Ring Research

Dieterich & Swetnam 1982

Caprio & Swetnam 1995

T.W. Swetnam, Laboratory of Tree-Ring Research

L LE ME EE D

T.W. Swetnam, Laboratory of Tree-Ring Research The fire-scar chronology network in southwestern North America currently includes about 120 sites. Most sites 10-100 ha, some >1000 ha. Typical sample sizes  10-50 fire scarred trees, hundreds in a few cases. The SW fire history network represents the collective effort of many people and institutions over more than 3 decades. Could draw ellipses around the sub-regions T.W. Swetnam, Laboratory of Tree-Ring Research