FIRE
SCARS: THE STORY OF A PONDEROSA PINE
The trees of our region write their own histories year by year,
recording the wet and the dry winters, the heat and the cold, and the
fires, especially the fires, in their living bodies. The study of tree
rings and fire scars has revealed a wealth of information about our
forests, and has confirmed that frequent fire was almost universal
throughout the Klamath-Siskiyou until the beginning of the twentieth
century. The following is the life story of one ponderosa pine and its
experiences with fire.
1723. A New Life. On a
soggy April day,
the needles of an infant ponderosa pine pierced the duff, and a tree
was born. Eight months earlier, the seed had whirled out its cone and
had flown spinning to a fortunate landing under the shade of an ancient
and half-dead black oak. Falling into ashes left by a fire just weeks
before, it was quickly covered. There it sheltered through the
summer’s heat, the autumn’s rain, and the
winter’s snow, until
springtime lit the fuse of life.
The tiny pine’s world was a valley in the eastern Siskiyou
Mountains. In the park-like forest of great trees, only three grew
within a
hundred feet of the seedling: the black oak, an giant sugar pine, and
a well-grown Douglas-fir. The seedlings’s parent, an old
ponderosa
pine, was nearly two hundred feet further up the slope. Between the
two, a trail worn by the feet of elk, wolves, and Dakubetede people
angled upward toward the ridgeline and dropped over a low saddle into
the next drainage. At the bottom of the valley, Pine Creek rushed
north toward the Ta’khoo-pe River, later called the
Applegate.
1732. Nine years old. The
pine had grown
well. It stood over 10 feet tall, and was 4 inches across at its base.
The oak above it had died, and the slow process of decay was sending a
steady trickle of nutrients into the pine’s roots. In
September, a
line of flames blew up over the ridge and swept down the slope. It was
not a large fire, but it kindled more strongly in the pile of fallen
bark heaped under the oak, and the side of the pine nearest the flames
was scorched. In the following weeks, the young tree repaired itself
with tough new bark. Hidden beneath that bark, the pine recorded its
first fire scar.
1737. Fourteen years old.
In the depths
of winter, a starving porcupine waddled across the open expanse of snow
to the young pine and laboriously began to climb. Reaching the topmost
rosette of branches, it settled into place and started to gnaw. Within
a few hours, the uppermost trunk of the pine was stripped of bark, and
its growing tip was dead.