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DF007
Dendrochronology study of fire history, Andrews Experimental Forest and central western Cascades, Oregon, 1482-1952

PRINCIPAL INVESTIGATOR: Frederick J. Swanson
ORIGINATOR: Peter D. Adrian Teensma
OTHER RESEARCHER: Peter D. Adrian Teensma
DATA SET CONTACT PERSON: Donald L. Henshaw
ABSTRACTOR: Peter J. Weisberg
METADATA CREATION DATE:
21 Aug 1995
MOST RECENT METADATA REVIEW DATE:
10 Jul 2013
KEYWORDS:
Disturbance, Disturbance, Long-Term Ecological Research (LTER), history, dendrochronology, fires, disturbance, fire history
PURPOSE:
To describe the historical fire regime of the study area. To compare fire frequencies over different historical periods. To test whether fire regimes vary spatially according to landscape or topographic controls.
METHODS:
Experimental Design - DF007:
Description:

An average of 6.5 (range: 1 - 23) stumps or trees were sampled (for origin dates, scar dates) over 359 sample sites, 30 of which lie just outside the study area. Study sites were selected to represent the range of stand age-class patches as interpreted from 1:12,000 aerial photograpy, and to include the boundaries between these patches. Since, most sites are located in clearcuts, the distribution of clearcuts strongly influenced the distribution of sample sites. Within sites, trees or stumps were sampled to include all age- classes present, to include the oldest individual present, and to include a maximal number of fire scars.

Field Methods - DF007 :
Description:

Tree origin dates and fire scar dates were recorded on stumps in the field. Increment cores were collected and used for trees in intact stands. A master fire chronology was constructed where the presence of seral tree species regeneration or fire scars for each fire year is listed for each site. Each fire episode was then mapped. Fire frequency was determined, and compared according to elevation, aspect, physiographic unit and cultural period. ANOVA and multiple comparisons tests were used for these comparisons.

SUPPLEMENTAL INFORMATION:
This data is published in: Fire History and Fire Regimes of the Central Western Cascades of Oregon by Peter Dominic Adrian Teensma A Dissertation, Department of Geography, University of Oregon, PhD, August 1987
TAXONOMIC SYSTEM:
None
GEOGRAPHIC EXTENT:
Central western Oregon Cascades (McKenzie River Watershed)
ELEVATION_MINIMUM (meters):
472
ELEVATION_MAXIMUM (meters):
1540
MEASUREMENT FREQUENCY:
once only
PROGRESS DESCRIPTION:
Complete
UPDATE FREQUENCY DESCRIPTION:
notPlanned
CURRENTNESS REFERENCE:
Observed