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Keyword: Palmer Drought Severity Index

Climate and human influences on historical fire regimes (AD 1400-1900) in the eastern Great Basin (USA)

Publications Posted on: January 12, 2016
High fire activity in western North America is associated with drought. Drought and fire prevail under negative El Niño Southern Oscillation (ENSO) and Pacific Decadal Oscillation (PDO) phases in the Southwest and with positive phases in the Northwest. Here, I infer climate effects on historic fire patterns in the geographically intermediate, eastern Great Basin and seek out evidence of human influence on reconstructed fire regimes.

Multi-century fire-regime forensics: the past as a guide for restoring landscape resilience

Projects Posted on: April 16, 2015
Multi-century fire and forest histories are reconstructed using dendrochronological techniques to assess past variation in fire regimes at various scales of time and space.

Testing ecoregions in Kentucky and Tennessee with satellite imagery and Forest Inventory data

Publications Posted on: July 20, 2009
Ecoregions are large mapped areas of hypothesized ecological uniformity that are delineated subjectively based on multiple physical and biological components. Ecoregion maps are seldom evaluated because suitable data sets are often lacking.

Multi-season climate synchronized historical fires in dry forests (1650-1900), Northern Rockies, USA

Publications Posted on: April 14, 2008
Our objective was to infer the climate drivers of regionally synchronous fire years in dry forests of the U.S. northern Rockies in Idaho and western Montana. During our analysis period (1650-1900), we reconstructed fires from 9245 fire scars on 576 trees (mostly ponderosa pine, Pinus ponderosa P. & C.

Climate effects on historical fires (1630-1900) in Utah

Publications Posted on: March 14, 2008
We inferred climate effects on fire occurrence from 1630 to 1900 for a new set of crossdated fire-scar chronologies from 18 forested sites in Utah and one site in eastern Nevada. Years with regionally synchronous fires (31 years with fire at ≥20% of sites) occurred during drier than average summers and years with no fires at any site (100 years) were wetter than average.

Climate drivers of regionally synchronous fires in the inland northwest (1651-1900)

Publications Posted on: March 14, 2008
We inferred climate drivers of regionally synchronous surface fires from 1651 to 1900 at 15 sites with existing annually accurate fire-scar chronologies from forests dominated by ponderosa pine or Douglas-fir in the inland Northwest (interior Oregon,Washington and southern British Columbia).Years with widespread fires (35 years with fire at 7 to 11 sites) had warm spring - summers and warm-dry summers, whereas years with no fires at any site (