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13-17 May 2013
Tucson, Arizona
US/Arizona timezone
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Linking climate-fire relationships: A fire history of Pinus ponderosa in Valles Caldera National Preserve, New Mexico

Presented by Mrs. Christina RESTAINO on 15 May 2013 from 18:00 to 21:00
Type: Poster Presentation
Board #: 18

Content

We collected fire scars from Ponderosa pine (Pinus ponderosa) to characterize the fire frequency and severity of a stand in the Valles Caldera National Preserve in New Mexico. We developed a master-tree chronology using Douglas- fir (Pseudotsuga menziesii) cores to cross-date fire scars to detect precise fire years. After identifying fire event years, we qualitatively assessed seasonality of fire based on the position of scar in the sapwood and heartwood. Superposed-epoch analysis (SEA) was used to investigate the relationship between fire years and climate. The period of analysis was limited to 1700-1900 in order to meet a threshold of three recording trees. Most fires in the Jemez Mountains occur during the early part of the growing season, usually May through early July. Results from the SEA suggest that fire years are linked to both current and antecedent year climate, with wet conditions two years prior and dry conditions in the year of the fire.

Place

Location: DoubleTree
Room: Salon E

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