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Keyword: fire scars

A multi-century history of fire regimes along a transect of mixed-conifer forests in central Oregon, U.S.A

Publications Posted on: December 14, 2018
Dry mixed-conifer forests are widespread in the interior Pacific Northwest, but their historical fire regimes are poorly characterized, in particular the relative mix of low- and high-severity fire. We reconstructed a multi-century history of fire from tree rings in dry mixed-conifer forests in central Oregon. These forests are dominated by ponderosa pine (Pinus ponderosa Lawson & C.

Long-term, landscape patterns of past fire events in a montane ponderosa pine forest of central Colorado

Publications Posted on: December 27, 2016
Parameters of fire regimes, including fire frequency, spatial extent of burned areas, fire severity, and season of fire occurrence, influence vegetation patterns over multiple scales. In this study, centuries-long patterns of fire events in a montane ponderosa pine - Douglas-fir forest landscape surrounding Cheesman Lake in central Colorado were reconstructed from fire-scarred trees and inferences from forest stand ages.

Crossdated fire-scar fire histories from ponderosa pine-dominated forests of Idaho and western Montana

Datasets Posted on: March 27, 2015
This dataset contains dendrochronologically crossdated surface fire histories from fire scars on trees at 23 dry forest sites in Idaho and Montana west of the Continental Divide.

Central Oregon fire history: fire and forest histories of central Oregon from tree rings

Projects Posted on: January 22, 2015
Tree-rings are used to reconstruct fire and forest histories in central Oregon.

Mixed-severity fire in lodgepole-dominated forests: Are historical regimes sustainable on Oregon's Pumice Plateau, USA?

Publications Posted on: October 07, 2014
In parts of central Oregon, coarse-textured pumice substrates limit forest composition to low-density lodgepole pine (Pinus contorta Douglas ex Loudon var. latifolia Engelm. ex S. Watson) with scattered ponderosa pine (Pinus ponderosa Lawson & C. Lawson) and a shrub understory dominated by antelope bitterbrush (Purshia tridentata (Pursh) DC.).

Modern fire regime resembles historical fire regime in a ponderosa pine forest on Native American land

Publications Posted on: October 01, 2014
Forests on tribal lands in the western United States have seen the return of low-intensity surface fires for several decades longer than forests on non-tribal lands. We examined the surface fire regime in a ponderosa pinedominated (Pinus ponderosa) forest on the Hualapai tribal lands in the south-western United States.

Macroanatomy of compartmentalization in fire scars of three western conifers

Publications Posted on: September 30, 2013
Fire scars are visible evidence of compartmentalization and closure processes that contribute to tree survival after fire injury. Preliminary observations of dissected fire scars from trees injured within the last decade showed centripetal development of wound-initiated discoloration (WID) through 2-3 decades of former sapwood in Larix occidentalis and Pseudotsuga menziesii.

Multicentury fire and forest histories at 19 sites in Utah and eastern Nevada

Publications Posted on: December 14, 2011
Our objective is to provide site-specific fire and forest histories from Utah and eastern Nevada that can be used for land management or additional research. We systematically sampled fire scars and tree-recruitment dates across broad gradients in elevation and forest type at 13 sites in Utah and 1 in eastern Nevada to characterize spatial and temporal variation in historical fire regimes as well as forest structure and composition.

Multi-scale controls of historical forest-fire regimes: new insights from fire-scar networks

Publications Posted on: October 07, 2011
Anticipating future forest-fire regimes under changing climate requires that scientists and natural resource managers understand the factors that control fire across space and time. Fire scars—proxy records of fires, formed in the growth rings of long-lived trees—provide an annually accurate window into past low-severity fire regimes.