Giant Forest fire history

-1600 -1400 -1200 -1000 -800 -600 -400 -200 0 200 400

CCW 01

CCW 02

CCW 03

CCW 04

CCW 05

LIN 01

CM N 07

CM C 08

CM C 03

G ia nt Fo re st fire -sc a rre d tre e s

Vegetation, species composition plot data:

Compare pre-settlement compositionestimates with current stand composition.

Relate pre (and post) settlement compositionwith fire regime characteristics among and betweenplots, sites, and transects.

High variability in forest composition between plots

Estimates of b.a. increase from pre-settlement conditionvaried from 0 to 100%. Average increase ~50%.

Giant sequoia fire record in the Circle Meadow areanow 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

CEMO (0.15%)

CADE (42.46%)

PIPO (22.69%)PSME (2.48%)

QUCH (12.38%)QUKE (19.84%)

HEL Post83m2/ha

CEMO (0.25%)CADE (15.32%)

PIPO (27.77%)

PSME (2.25%)QUCH (20.90%)

QUKE (33.50%)

HEL Pre49.1m2/ha

Helispot fire history site

Elevation 1350m MFI ~6yrs

Plot species composition

Raymond mountain and Biledo Meadow, Yosemite

Upper elevation sites, Yosemite NP