Giant Forest fire history. Vegetation, species composition plot data:  Compare pre-settlement composition estimates with current stand composition.

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Presentation transcript:

Giant Forest fire history

Vegetation, species composition plot data:  Compare pre-settlement composition estimates with current stand composition.  Relate pre (and post) settlement composition with fire regime characteristics among and between plots, sites, and transects. High variability in forest composition between plots Estimates of b.a. increase from pre-settlement condition varied from 0 to 100%. Average increase ~50%. Giant sequoia fire record in the Circle Meadow area now extended back prior to ~600BC with some replication.

Giant Forest plots

Crystal Cave Road, Giant forest Dogwood thicket with white-fir overstory

Colony Mill, Giant Forest Tree sampled for fire history in 1992Open pine stand

Helispot plot, Yosemite Incense cedar thicket with pine overstory

Helispot fire history site Elevation 1350m MFI ~6yrs Plot species composition

Raymond mountain and Biledo Meadow, Yosemite Upper elevation sites, Yosemite NP

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