Index Catalog // ScholarsArchive@OSU

Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

Creator:: Giesen, Thomas William
Abstract:: Fire is a major disturbance process in many forests. Long-term studies of the biogeochemical effects of fires, especially on soils, are very rare. Consequently, long-term effects of fire on soils are often hypothesized from short-term effects. In a chronosequence study, I studied 24 western Cascades (Oregon) forest stands thought to...
Resource Type:: Masters Thesis
Full Text:: (Oregon) forest stands thought to have been initiated in fire. Twelve of those burned about 150 years

Fire history and pattern in a Cascade Range landscape

Creator:: Morrison, Peter H. and Swanson, Frederick J.
Abstract:: Fire history from years 1150 to 1985 was reconstructed by analyzing forest stands in two 1940-hectare areas in the central-western Cascade Range of Oregon. Serving as records for major fire episodes, these stands revealed a highly variable fire regime. The steeper, more dissected, lower elevation Cook-Quentin study area experienced more...
Resource Type:: Technical Report

Fire history in three vegetation types on the eastern side of the Oregon Cascades

Creator:: Bork, Joyce L.
Abstract:: Historic fire return intervals in three different vegetation types dominated by ponderosa pine (Pinus ponderosa Laws.) were determined using fire scarred trees. Dendrochronological techniques were used to achieve accuracy in dating fire scars on samples collected from six 40 acre plots established in each site. Mean fire return intervals (MFRI)...
Resource Type:: Dissertation

Temporal and spatial variability of historic fire frequency in the southern Willamette Valley foothills of Oregon

Creator:: Robbins, Danielle
Abstract:: A crossdated fire history was reconstructed for a 1562 km2 area in the southern Willamette foothills of Oregon, using fire scars and tree origin years from twelve sites. The purpose of this study was to determine fire frequency for each site and to quantify temporal and spatial variability of fire...
Resource Type:: Masters Thesis
Full Text:: under the umbrella of her Forest Service study to determine fire history for the whole of the

Age structure, developmental pathways, and fire regime characterization of Douglas-fir/western hemlock forests in the central western Cascades of Oregon

Creator:: Tepley, Alan J.
Abstract:: Descriptions of the fire regime in the Douglas-fir/western hemlock region of the Pacific Northwest traditionally have emphasized infrequent, predominantly stand-replacement fires and an associated linear pathway of stand development, where all stands proceed along a common pathway until reset by the next fire. Although such a description may apply in...
Resource Type:: Dissertation
Full Text:: in other fire-history studies in the central western Cascades of Oregon (Stewart 1986, 1989

The use of burned forest by breeding birds following the Biscuit Fire in southwest Oregon

Creator:: Donaghy Cannon, Michelle M.
Abstract:: Fire severity is hypothesized as an important driver of bird responses to wildfire. For those species that typically respond negatively to increasing severity, Accessibility of high-severity burned forest may be dependent on the proximity of unburned or low-severity burned forest to meet all of the needs of breeding bird species...
Resource Type:: Dissertation
Full Text:: THE USE OF BURNED FOREST BY BREEDING BIRDS FOLLOWING THE BISCUIT FIRE IN SOUTHWEST OREGON

Effects of wildfire burn severity on soil microbial communitiesand invasive plant species in the Cascade Range of Oregon

Creator:: Hebel, Cassie L.
Abstract:: Fire suppression in the last several decades has resulted in unprecedented accumulations of organic matter on the landscape, leading to an increase in large, intense wildfires. This study investigated the soil microbial community (using phospholipid fatty acid analysis) across recently burned forests on the eastern slope of the Cascade Range...
Resource Type:: Masters Thesis
Full Text:: both the USDA Forest Service, Pacific Northwest Research Station and Oregon State University

Mixed-Severity Fire Effects on Biological Legacies and Vegetation Response in Pseudotsuga Forests of Western Oregon's Central Cascades, USA

Creator:: Dunn, Christopher J.
Abstract:: Mixed-severity fire occurrence is increasingly recognized in Pseudotsuga forests of the Pacific Northwest, but questions remain about how tree mortality varies, and forest structure is altered, across the disturbance gradient observed in these fires. Therefore, we sampled live and dead biological legacies at 45 one ha plots, with four 0.10...
Resource Type:: Dissertation
Full Text:: fire stimulated soil seedbanks increased the total species richness from 23 to 46. The life-history

A contingent valuation study of the value of reducing fire hazards to old-growth forests in the Pacific Northwest

Creator:: Loomis, John B., Gonzalez-Caban, Armando, and Gregory, Robin (Robin Scott)
Abstract:: A contingent valuation methodology was applied to old-growth forests and critical habitat units for the Northern Spotted Owl in Oregon to esimate the economic value to the public in knowing that rare and unique ecosystems will be protected from fire for current and future generations. Generalizing to the whole state,...
Resource Type:: Technical Report

Vegetation and soil microbial communities three years after wildfire in spruce-fir forests of northwestern Wyoming

Creator:: Hooke, Jennifer Suzanne
Abstract:: The Normalized Burn Ratio and Composite Burn Index were used to classify burn severity in three sites that experienced lightning-ignited wildfire in the year 2000. The effect of burn severity (unburned, low, moderate, and high severity classes) was investigated on vegetation and soil microbial community composition. Vegetation communities showed a...
Resource Type:: Masters Thesis
Full Text:: assistance of the Oregon State University Departments of Forest Resources and Forest Science. My graduate

ScholarsArchive@OSU

Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

Fire history and pattern in a Cascade Range landscape

Fire history in three vegetation types on the eastern side of the Oregon Cascades

Temporal and spatial variability of historic fire frequency in the southern Willamette Valley foothills of Oregon

Age structure, developmental pathways, and fire regime characterization of Douglas-fir/western hemlock forests in the central western Cascades of Oregon

The use of burned forest by breeding birds following the Biscuit Fire in southwest Oregon

Effects of wildfire burn severity on soil microbial communitiesand invasive plant species in the Cascade Range of Oregon

Mixed-Severity Fire Effects on Biological Legacies and Vegetation Response in Pseudotsuga Forests of Western Oregon's Central Cascades, USA

A contingent valuation study of the value of reducing fire hazards to old-growth forests in the Pacific Northwest

Vegetation and soil microbial communities three years after wildfire in spruce-fir forests of northwestern Wyoming

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