Download or read book Vegetation Response After Wildfires in National Forests of Northeastern Oregon Classic Reprint written by Charles Grier Johnson Jr. and published by Forgotten Books. This book was released on 2019-02-25 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Vegetation Response After Wildfires in National Forests of Northeastern Oregon The vegetation of the Blue Mountains is highly adapted to periodic fire in forest, shrubland, and grassland ecosystems. Flanagan (1996) rated the principal tree species into categories of resistance. The trees occurring in the Blues, Wallowas, and Seven Devils rate as follows on his scale. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Vegetation Response After Wildfires in National Forests of Northeastern Oregon written by Charles G. Johnson and published by . This book was released on 1998 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vegetation Response After Wildfires in National Forests of Northeastern Oregon written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vegetation of Oregon and Washington Classic Reprint written by Jerry F. Franklin and published by Forgotten Books. This book was released on 2017-11-25 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Vegetation of Oregon and Washington The Pacific Northwest is among the more diverse regions of North America in environ ment and vegetation. Oregon and Washington, the heart of this region, encompass wet coast al and dry interior mountain ranges, miles of coastline, interior valleys and basins, and high desert plateau (fig. Moisture, temperature, and substrate vary greatly. Natural vegetation types range from dense coastal forests of tow ering conifers through woodland and savanna to shrub steppe. The ecology and plant geography of the region have been studied by scientists for over half a century. Major contributors have ih cluded W. S. Cooper, R. Daubenmire, H. P. Hansen, L. A. Isaac, V. J. Krajina, D. B. Law rence, T. T. Munger, M. E. Peck, C. V. Piper, E. H. Reid, and G. B. Rigg. Unfortunately, most of the knowledge which has been gath ered is fragmented - dispersed through jour nals, books, theses, and unpublished files Of data. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Historical and Current Forest Landscapes of Eastern Oregon and Washington written by and published by . This book was released on 1995 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Post fire Vegetation Response to Snow in the Western United States written by Katie Blauvelt and published by . This book was released on 2013 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: The western United States is experiencing significant changes in wildfire and snow regimes as a result of warming temperatures. An amplification of wildfire activity and reduction in snow water equivalent, snow covered area, and earlier spring snowmelt are documented trends that are projected to continue into the future. With an increase in wildfire activity, it is important to understand how a reduction in snow will impact regenerating vegetation in the western United States. The first objective of this study was to assess summer vegetation biomass response to antecedent winter snow on a local scale by determining the physiographic characteristics that influence the relationship between snow and vegetation in the case of the 2002 Biscuit Fire. The second objective was to assess the broad scale regional patterns of regenerating vegetation response to snow, by comparing the correlation between summer vegetation biomass and antecedent winter snow before and after large wildfires across the western United States. Remote sensing data and spatial-temporal statistics were used to analyze the relationship between snow and vegetation. In the local scale analysis, the 2002 Biscuit Fire was analyzed, which burned over 2,000 km2 in southwest Oregon and northern California. Nonparametric Multiplicative Regression (NPMR) was used to explore the complex relationships between multiple predictor variables (winter snow frequency, elevation, slope, aspect, and burn severity) and the summer vegetation response variable (enhanced vegetation index, or EVI), before and after the Biscuit Fire burned. The burned area was subset by soil type to determine how soil texture influenced the snow and vegetation relationship. In the regional scale analysis, the Pearson's Correlation Coefficient was calculated to analyze the relationship between winter snow frequency and summer EVI before and after 23 wildfires across the western United States. In the case of the Biscuit Fire, summer EVI responded negatively to snow before the fire, and responded positively to snow after the fire. EVI in coarse-textured skeletal soils exhibited the clearest shift to a positive response to snow after the fire burned, while EVI in fine-textured clay soils did not exhibit this type of shift. The regional analysis proved that wildfire disturbances affect the relationship between snow and vegetation differently across the western United States. Seven fires clustered near the Biscuit Fire in northern California and southwestern Oregon behaved similar to the Biscuit Fire, shifting from a negative pre-fire snow and EVI correlation to a less negative or positive post-fire snow and EVI correlation. The majority of these fires had relatively low average elevations (430 to 1708 m) with greater than 80% forest land cover. Ten fire areas exhibited a significant positive pre and post-fire snow and EVI correlation. The majority of these fires had relatively high average elevations (1612 to 2291 m) and consisted of greater than 50% shrub, scrub, and grass land cover. The local scale analysis suggests that the condition of the vegetation (undisturbed vs. regenerating) and the soil texture in which it grows affects its response to winter snow. The low water holding capacity of coarse-textured soils and the short root-lengths of regenerating vegetation may result in greater dependence on snow as a water resource. Regionally, vegetation type and elevation may affect the vegetation's response to snow; short-rooted shrubs at higher elevations above the transient snow zone may be more dependent on snow as a water resource. These results suggest that the relationship between snow and vegetation is not constant, depending on the condition of the vegetation. Increases in wildfire activity and a reduction of snow in the future may impact successional trajectories in certain regions where vegetation may have historically relied on snowmelt to regenerate.

Download or read book Environment Vegetation and Regeneration After Timber Harvest in the Hungry Pickett Area of Southwest Oregon Classic Reprint written by Joseph N. Graham and published by Forgotten Books. This book was released on 2017-11-18 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Environment, Vegetation, and Regeneration After Timber Harvest in the Hungry-Pickett Area of Southwest Oregon We studied the Hungry - Pickett area to derive relationships between environmental factors and post-harvest forest regeneration in clearcut and partial cut areas These relationships were developed on Bureau of Land Management land, but they should be useful throughout the study area. Our objective was to compare forested sites in terms of relative difficulty of regeneration. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Environment Vegetation and Regeneration After Timber Harvest in the Applegate Area of Southwestern Oregon Classic Reprint written by Don Minore and published by Forgotten Books. This book was released on 2017-11-19 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Environment, Vegetation, and Regeneration After Timber Harvest in the Applegate Area of Southwestern Oregon We subjected all of the quantitative environmental variables to two stepwise multiple regression analyses - one with stocking percent as the dependent variable and the other with number of seedlings per acre as the dependent variable. Environmental variables with significant coefficients were retained in the resulting multiple regression equations. The equations accounting for the most variation are presented here as mathematical models for comparing forest sites in terms of regeneration after clearcutting. Topographic variation limited the sample size to less than 30 subplots in several extremely irregular clearcut units. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Fire Severity and Vegetation Response to Fire in Riparian Areas of the Biscuit and B B Complex Fires Oregon written by Jessica E. Halofsky and published by . This book was released on 2007 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fire is the dominant disturbance process in western U.S. forests, and although effects of fire in upland forests are relatively well-studied, there is little information about fire effects on riparian forests, critical areas of the landscape for both habitat and water quality. This dissertation examines different aspects of fire effects in riparian areas of two recent fires in Oregon, the Biscuit Fire in southwestern Oregon and the B & B Complex Fire in the Cascade Mountain Range. In the first of three studies, I compared riparian fire severity to that in uplands and investigated factors influencing riparian fire severity in both fire areas. In a second study, the relationships among ground-based indices of fire severity in riparian areas, and the relationships between ground-based and remotely-sensed indices of fire severity, were examined. In a third study, I investigated patterns in post-fire riparian plant community regeneration in the same areas. I found that understory fire severity was significantly lower in riparian areas compared to adjacent uplands, suggesting a decoupling of understory fire effects in riparian areas versus uplands. However, there were no differences in overstory fire severity between riparian areas and uplands in either fire. Understory and overstory fire severity indices were found to be weakly related, suggesting that there are limitations in the use of both types of fire severity indices. However, both overstory and understory fire severity in riparian areas were most strongly predicted by upland fire severity. Riparian fuel properties were also strong predictors of riparian fire severity. Patterns in post-fire riparian regeneration were influenced, at a coarse spatial scale, by factors associated with position in a watershed (headwater versus main stem channels) in the Biscuit Fire and by elevation/plant association in the B & B Complex Fire. At a finer spatial scale, differences in species composition and microsite conditions between deciduous hardwood- and conifer-dominated communities, and understory fire severity, influenced patterns of post-fire regeneration. Results of these studies suggest that management practices that reduce upland fire severity may also reduce riparian fire severity. Results also suggest that post-fire riparian regeneration efforts be tailored to site-specific vegetation conditions of complex riparian environments.

Download or read book A Forest Fire Prevention Handbook for the Schools of Oregon Classic Reprint written by United States Forest Service and published by Forgotten Books. This book was released on 2017-10-22 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from A Forest Fire Prevention Handbook for the Schools of Oregon All nations need wood. A nation that does not have enough for sts of its own must import lumber from others that have a surplus. The same is true of the States Of our Union. The States with an abundance of timber must supply those that do not have enough. Forests and the products of the forest. Play an important part in our lives. Thousands of articles are made from wood to say nothing of the wood that is used in buildings, other construction work, and by the railroads. Medicines and even clothing are made from trees. Our country is now using each year pounds of artificial silk made from cellulose, which is a wood product. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Vegetation Response to Wildfire and Climate Forcing in a Rocky Mountain Lodgepole Pine Forest Over the Past 2 500 Years written by Barrie Victoria Chileen and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Disturbance and Forest Health in Oregon and Washington Classic Reprint written by Sally Campbell and published by Forgotten Books. This book was released on 2017-11-19 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Disturbance and Forest Health in Oregon and Washington Citizens, forest owners, and resource managers must all be come active to solve forest health problems in Oregon and Washington. Without cooperation and interaction among groups with diverse and opposing viewpoints, future needs and desires for products and services from regional forests will not be met. East of the Cascades, forest fuel reduction, thinning over stocked stands, and changing species are needed to reduce the risks of uncontrollable, stand-replacing wildfires and widespread insect outbreaks. West of the Cascades, the continued introduction of exotic insects, diseases, and plants threaten the existence of native forests and, without continual vigilance, chances of establish ment and spread are much greater. Air pollution, unless controlled and reduced in the Puget Sound area and the Willamette Valley, will affect increasing numbers of forest species, influencing their ability to grow and reproduce. On both sides of the Cascades, the incidence and severity of many native insects and diseases is closely linked to forest management. Awareness of the effects of different manage ment activities on insects and diseases is essential to achieve desired forest conditions. Forest management, forest health monitoring, research, and public education are the tools needed to create and main tain the forests that are so important to the people of Oregon and Washington. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Seedling Response to Vegetation Management in Northeastern Oregon written by Amanda A. Lindsay and published by . This book was released on 2009 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Northeastern Oregon geology and climate provides moderately productive conditions for forest management and timber production. Although site preparation and planting are commonly used silvicultural practices, little research exists on the efficacy of specific forest herbicides and responses of seedling survival and growth in this region. This research seeks to improve the knowledge and understanding of these practices by examining the short and long-term effects of controlling competing vegetation on early plantation establishment and growth. The first study re-evaluates ponderosa pine (Pinus ponderosa) growth and survival twenty years after hexazinone was applied in broadcast and spot treatments for control of competing vegetation. Early treatment differences in survival and growth were detected (Oester et al. 1995), and tree size has continued to diverge among treatments twenty years after planting. The second study evaluated a suite of chemical site preparation treatments and several responses: western larch (Larix occidentalis) and Douglas-fir (Pseudotsuga meziesii) seedling survival and growth, vegetation cover development, and change in growing season volumetric soil moisture. Seedling survival, seedling volume growth, and volumetric soil moisture at the end of the first and second growing seasons did not always differ among treatments, but consistently decreased where competing vegetation cover was greater. These studies provide evidence that controlling competing vegetation on these sites increases survival and growth of western larch and Douglas-fir seedlings in the first few years after planting. Although direct effects of treatment do not persist, differences in tree size among treatments are still evident after two years for Douglas-fir and western larch, and after 20 years for ponderosa pine. Results pertain directly to ponderosa pine, western larch, and Douglas-fir planted in Douglas-fir/spiraea (Pseudotsuga menziesii/Spiraea betulifolia) and Douglas-fir/common snowberry (Pseudotsuga menziesii/Symphoricarpos albus) plant associations in northeastern Oregon, but may reasonably be applied to similar sites with the same species composition throughout much of the Intermountain West.

Download or read book Vegetation of Two Drainages in Eagle Cap Wilderness Wallowa Mountains Oregon Classic Reprint written by David N. Cole and published by Forgotten Books. This book was released on 2018-03-18 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Vegetation of Two Drainages in Eagle Cap Wilderness, Wallowa Mountains, Oregon Descriptions of vegetation structure and floristic com position and their relation to selected environmental characteristics, such as elevation and aspect will pro vide baseline data about current conditions and allow managers to evaluate and respond to future vegetational changes. This information also reveals unique ecological situations that might require special management strate gies for preservation. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Dead Fuels and Understory Vegetation Six Years After a Large Mixed severity Wildfire in Southwest Oregon written by Amy Nathanson and published by . This book was released on 2011 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: Though the mixed-evergreen forests of the Klamath Siskiyous have a long history of large, mixed-severity fires, most research in this region has concentrated on the impacts of high-severity fire. Knowledge of the ecological effects of low- and moderate-severity areas within mixed-severity fires is important because such areas may account for over half the landscape affected by a fire. The purpose of this study was to understand the relationship of fire severity with dead fuels and understory vegetation across a full range of fire severities. Study sites were located within and just outside the boundary of the 2002 Biscuit Fire, which burned 200,000 hectares in a mosaic of burn severities. Six years after the Biscuit Fire, the biomass and depth of litter and duff was lower on burned sites than unburned sites, and lowest on high-severity sites. This relationship was reversed for woody fuels>7.62 cm in diameter, where quantities were highest in high- and extreme-severity areas, though there was no evidence that quantities differed between low-severity and unburned sites. There was no evidence of a relationship between woody fuels 0.64-7.62 cm in diameter and fire severity, 6 years post-fire. There was no evidence that fuel quantities differed between sites that burned only in the Biscuit Fire with sites that also burned 15 years earlier in the 1987 Silver Fire. Fuel quantities and composition differed between burned and unburned sites, but these differences disappeared if litter and duff were not considered. Fuel classes were correlated with each other within three general size classes: small (litter, duff, and fuels 2.54 cm), medium (fuels 2.54-30 cm), and large (fuels30 cm). There was little correlation between these size classes. Vegetation response also varied by fire severity, species, and height. Generally, density for tree seedlings

Download or read book Response of Blue Huckleberry to Prescribed Fires in a Western Montana Larch Fir Forest Classic Reprint written by Melanie Miller and published by Forgotten Books. This book was released on 2017-11-19 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Response of Blue Huckleberry to Prescribed Fires in a Western Montana Larch-Fir Forest Many species of shrubs common to western forests respond to fire by reproducing vegetatively. After fire has killed the top of the plant, sprouts develop from root crowns or from rhizomes, underground stems located in duff and soil layers (fig. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Ecosystem Response to Holocene Fire and Climate Change at Hobart Lake Southwestern Oregon written by Alicia Lauren White and published by . This book was released on 2014 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oregon's southern Cascade Range contains one of the world's most biologically diverse forests. Past ecosystem responses to fire and climate change have been well studied in the Coast Range, the eastern Cascade Range, and the Klamath Mountains but the ecological and environmental histories of the southern Cascade Range are poorly understood. Therefore, an 8000-year-long record from Hobart Lake (42.09935°N, 122.48170°W, 1458m), Oregon in the southern Cascade Range was examined to better understand past changes in vegetation and fire activity, conifer biogeographic distributions, and regional climate variability. Hobart Lake is exceptional in that it has an unusually fast sedimentation rate, resulting in a detailed vegetation and fire records based on pollen and macroscopic charcoal data. From 8000 to 3500 cal yr BP, the dominance of xerophytic species, such as Pinus and Cupressaceae, and the high frequency of fires are consistent with a climate that was warm and dry. Late-Holocene vegetation from 3500 cal yr BP to the present day was characterized by an abundance of mesophytic taxa, such as Abies and Pseudotsuga, and the decline of xerophytic taxa such as Pinus. These changes, along with reduced fire frequency, suggest that the climate became cooler and wetter. In addition to the Hobart Lake record, changes in the abundance of Abies and Pseudotsuga pollen at multiple sites throughout Oregon and northern California were examined. Abies was abundant during the late glacial, its range and/or abundance contracted during the early Holocene, and it gradually became more widespread and abundant during the mid- and late-Holocene. Pseudotsuga became more abundant at northern low-elevation sites during the warm dry conditions of the early Holocene and then flourished in more southern mid-elevation sites when the climate became cooler and wetter in the late Holocene. The vegetation history at Hobart Lake and other sites is consistent with large-scale variations in regional climate related to slowly varying changes in the seasonal insolation cycle and the indirect effects of insolation on the size and strength of the northeastern Pacific subtropical high-pressure system.