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You are here >1Up Info > Wildlife, Animals, and Plants > Plant Species > Shrub > Species: Quercus garryana | Oregon White Oak
 

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FIRE ECOLOGY

SPECIES: Quercus garryana | Oregon White Oak
FIRE ECOLOGY OR ADAPTATIONS : Fire ecology: Historically, Oregon white oak was subjected to a fire regime of low-severity surface fires occurring every few years. A study in the Oregon white oak woodlands of Humbolt Redwoods State Park, California, revealed a history of fire every 7.5 to 13.3 years during the presettlement era [47]. Frequent fire resulted in the open savannas typical of presettlement times in the Willamette Valley, Oregon, and the bald hills of California [49]. Dead woody fuels were scant, but flashy fuels (grasses) were abundant and dry early in summer. The fire spread rate was moderated by the gentle topography typical of this cover type. Fire seldom spread into adjacent coniferous forests [5]. Plant adaptations: Oregon white oak has adapted to low- to moderate-severity fire by sprouting from the bole, root crown, and roots [25,36,48]. Sprouts of this species grow far more rapidly than do seedlings. Young trees not subjected to periodic top-kill by fire followed by sprouting often do not attain sexual maturity before they succumb to herbivory [48]. Initial establishment of seedlings is somewhat dependent on fire also. Although this species does not require a bare mineral seedbed, seedling recruitment is greatly enhanced when the litter layer has been removed by fire [4]. POSTFIRE REGENERATION STRATEGY : Tree with adventitious-bud rootcrown/ soboliferous species root sucker Ground residual colonizer (onsite, initial community) Secondary colonizer - offsite seed

Related categories for Species: Quercus garryana | Oregon White Oak

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Information Courtesy: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. Fire Effects Information System

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