Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Examining Effectiveness Of Oregons Forest Practice Rules For Maintaining Warm Season Maximum Stream Temperature Patterns In The Oregon Coast Range
Download Examining Effectiveness Of Oregons Forest Practice Rules For Maintaining Warm Season Maximum Stream Temperature Patterns In The Oregon Coast Range full books in PDF, epub, and Kindle. Read online Examining Effectiveness Of Oregons Forest Practice Rules For Maintaining Warm Season Maximum Stream Temperature Patterns In The Oregon Coast Range ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Examining Effectiveness of Oregon's Forest Practice Rules for Maintaining Warm-season Maximum Stream Temperature Patterns in the Oregon Coast Range by : Jennifer Marie Fleuret
Download or read book Examining Effectiveness of Oregon's Forest Practice Rules for Maintaining Warm-season Maximum Stream Temperature Patterns in the Oregon Coast Range written by Jennifer Marie Fleuret and published by . This book was released on 2006 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stream temperature, as an important component of stream ecosystems, can be affected by forest harvesting through removal of riparian shade and changes in hydrology. Riparian Management Areas (RMAs), as implemented through the current Oregon Forest Practice Rules, are designed, in part, to maintain stream temperature following forest harvesting. However, effectiveness of RMAs in achieving this outcome is uncertain. The objective of this research was to examine effectiveness of RMAs, as outlined by the current Oregon Forest Practices Act and the Northwest State Forests Management Plan, in maintaining warm-season temperature patterns of streamwater. Twenty-two headwater streams, on either private- or state-owned forestlands in the Oregon Coast Range that encompassed a range of RMA widths and harvest prescriptions, were evaluated for effectiveness of RMAs on stream temperature. A Before-After-Control-Impact/Intervention design was used, and each stream had an upstream control and a downstream treatment reach. Temperature probes were placed 1) at the top of the control reach, 2) at the boundary between the control and treatment reaches, and 3) at the bottom of the treatment reach from June to September for four years starting in 2002. All but one stream have at least two years of pre2 harvest temperature data, and one year of post-harvest temperature data. Selected stream and riparian characteristics were collected every 60 m within the control and treatment reaches once prior to and once following harvest. I hypothesized that RMAs would be effective if pre-harvest warmseason maximum temperature patterns were maintained following harvest treatments. Comparisons of temperature patterns between control and treatment reaches both pre- and post-harvest indicate that my hypothesis should be rejected because warm-season maximum temperature patterns were not maintained when mean values in treatment reaches across all study streams were considered. Difference in temperature gradients between control and treatment reaches averaged 0.6°C, based on two years of pre-harvest and one year of post-harvest data. This indicates that more warming or less cooling occurred in treatment reaches than occurred in control reaches when pre-harvest and post-harvest periods were compared, suggesting that current RMAs for small- and medium fishbearing streams of the Oregon Coast Range are not effective for maintenance of warm-season maximum temperature patterns.
Book Synopsis Revision of the Resource Management Plans of the Western Oregon Bureau of Land Management Districts by :
Download or read book Revision of the Resource Management Plans of the Western Oregon Bureau of Land Management Districts written by and published by . This book was released on 2008 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Contributions of Riparian Vegetation and Stream Morphology to Headwater Stream Temperature Patterns in the Oregon Coast Range by : Danielle D. Smith
Download or read book Contributions of Riparian Vegetation and Stream Morphology to Headwater Stream Temperature Patterns in the Oregon Coast Range written by Danielle D. Smith and published by . This book was released on 2004 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: The role of riparian forests in maintaining temperatures of headwater streams is well established and is a foundation of forest practice rules designed to protect streamwater quality. However, detailed investigation is still needed quantifying specific characteristics of stream systems that affect streamwater temperature including riparian features, stream morphology, and subsurface interactions. The objectives of this research were to investigate summertime streamwater temperature patterns and identify characteristics within headwater streams and riparian zones that influence stream temperature. This study was designed to evaluate these relationships prior to logging in 38 perennial headwater catchments of the Oregon Coast Range. Stream reaches of greater than 1000 m were instrumented with temperature probes and selected stream and riparian characteristics were measured at 60-m intervals within each study reach in 2002 and 2003. A subset of the streams was examined in 2003 to determine the potential influence of streamwater residence time on temperature patterns. Findings suggest that canopy cover is the driving factor controlling summer stream temperature in these small headwater streams, but other stream and riparian characteristics should not be discarded. Longitudinal stream temperature patterns were quite variable for these forested streams and results suggest a high degree of complexity in small headwater streams. Maximum 7-day moving average temperatures ranged from 11.4°C to 16.8°C, with three streams above the standard 16°C threshold. Effects of stream and riparian characteristics on stream temperature were strongest when average of the weekly high temperature was assessed, suggesting this may be a more sensitive index of stream temperature than the commonly used maximum 7-day moving average. Results of tracer dilution tests were inconclusive in that temperature was not consistently correlated to residence time in streams.
Book Synopsis Oregon's Forest Practice Rules by : Paul W. Adams
Download or read book Oregon's Forest Practice Rules written by Paul W. Adams and published by . This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Meeting Water Quality Objectives on State and Private Forest Lands Through the Oregon Forest Practices Act by : Oregon. Forest Practices Act Technical Work Group
Download or read book Meeting Water Quality Objectives on State and Private Forest Lands Through the Oregon Forest Practices Act written by Oregon. Forest Practices Act Technical Work Group and published by . This book was released on 1977 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Influence of Contemporary Forest Harvesting on Summer Stream Temperatures in Headwater Streams of Hinkle Creek, Oregon by : Kelly Maren Kibler
Download or read book The Influence of Contemporary Forest Harvesting on Summer Stream Temperatures in Headwater Streams of Hinkle Creek, Oregon written by Kelly Maren Kibler and published by . This book was released on 2008 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stream temperature is a water quality parameter that directly influences the quality of aquatic habitat, particularly for cold-water species such as Pacific salmonids. Forest harvesting adjacent to a stream can increase the amount of solar radiation the stream receives, which can elevate stream temperatures and impair aquatic habitat. Oregon Forest Practice Rules mandate that forest operators leave Riparian Management Areas (RMAs) adjacent to streams in order to minimize the water quality impacts from forest harvesting. However, RMAs that contain overstory merchantable conifers are not required for small non-fish-bearing streams in Oregon, thus there is potential for increases in stream temperature to occur in headwater streams after harvesting. There is concern that increases in stream temperatures and changes to onsite processes in non-fish-bearing, headwater streams may propagate downstream and impair habitat in fish-bearing streams. The objectives of the following work are to assess the effects of contemporary forest management practices on stream temperatures of small non-fish-bearing headwater streams and to develop new knowledge regarding the physical processes that control reach-level stream temperature patterns. Summer stream temperatures were measured for five years in six headwater streams in the Hinkle Creek basin in southern Oregon. After four years, four of the streams were harvested and vegetated RMAs were not left between the streams and harvest units. The watersheds of the two remaining streams were not disturbed. Post-harvest stream temperatures were monitored for one year in all six streams. Each harvested stream was paired with one unharvested stream and regression relationships for maximum, minimum and mean daily stream temperatures were developed. Changes to temperatures of harvested streams were detected by comparing the mean pre-harvest regression relationship to the mean post-harvest relationship. Change detection analyses that considered the mean response among all four harvested streams indicated that maximum daily stream temperatures did not increase after harvesting, but that minimum and mean daily temperatures decreased significantly after harvesting. Additionally, diel stream temperature fluctuations were significantly greater one year after harvesting. Pre- and post-harvest surveys of canopy closure in the harvested and unharvested streams were completed in order to compare levels of stream shading before and after harvest. The post-harvest survey quantified canopy closure from remaining overstory vegetation as well as from logging slash that partially covered the harvested streams. The surveys indicated that mean overstory canopy closure in the harvested streams decreased by 84% as a result of the harvest, but as the logging slash provided considerable cover, total canopy closure decreased by only 20%. It is possible that the logging slash effectively attenuated solar radiation and prevented extreme temperature increases in the harvested streams. However, it is likely that streamflow increased after harvesting and that the increased streamflow also prevented increases to maximum temperatures and contributed to lower minimum and mean stream temperatures.
Book Synopsis Field Guide to Oregon Forest Practice Rules by : Oregon. Department of Forestry
Download or read book Field Guide to Oregon Forest Practice Rules written by Oregon. Department of Forestry and published by . This book was released on 1980 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Oregon Forest Practices Act Water Protection Rules by : Ted Lorensen
Download or read book The Oregon Forest Practices Act Water Protection Rules written by Ted Lorensen and published by . This book was released on 1994 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Managing Oregon's Riparian Zone for Timber, Fish and Wildlife by :
Download or read book Managing Oregon's Riparian Zone for Timber, Fish and Wildlife written by and published by . This book was released on 1987 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oregon Department of Forestry Forest Practice Administrative Rules by : Oregon. Department of Forestry
Download or read book Oregon Department of Forestry Forest Practice Administrative Rules written by Oregon. Department of Forestry and published by . This book was released on 1997 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effectiveness of Washington's Forest Practice Riparian Management Zone Regulations for Protection of Stream Temperature by : Ed Rashin
Download or read book Effectiveness of Washington's Forest Practice Riparian Management Zone Regulations for Protection of Stream Temperature written by Ed Rashin and published by . This book was released on 1992 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forest Practice Rules by : Oregon. Forest Practices Section
Download or read book Forest Practice Rules written by Oregon. Forest Practices Section and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forest Practice Rules by : Oregon. Forest Practices Section
Download or read book Forest Practice Rules written by Oregon. Forest Practices Section and published by . This book was released on 1988* with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oregon Forest Practice Rules and Statutes by :
Download or read book Oregon Forest Practice Rules and Statutes written by and published by . This book was released on 2000 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Forest Practices on Peak Flows and Consequent Channel Response by : Gordon E. Grant
Download or read book Effects of Forest Practices on Peak Flows and Consequent Channel Response written by Gordon E. Grant and published by DIANE Publishing. This book was released on 2010-09 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes a database of relevant studies reporting peak flow data across rain-, transient-, and snow-dominated hydrologic zones. Provides a quantitative comparison of changes in peak flow across both a range of flows and forest practices. Increases in peak flows generally diminish with decreasing intensity of percentage of watershed harvested and lengthening recurrence intervals of flow. Peak flow effects on channel morphology should be confined to stream reaches where channel gradients are less than 0.02 and streambeds are composed of gravel and finer material. Managers should evaluate the potential risk of peak flow increases based on factors such as presence of roads, specific mgmt. treatments employed, and watershed drainage efficiency.
Book Synopsis Decision Guides for Forest Practice Laws in Oregon by : William David Klemperer
Download or read book Decision Guides for Forest Practice Laws in Oregon written by William David Klemperer and published by . This book was released on 1971 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spawned by the current interest in revising Oregon's Forest Conservation Act, this study defines the forestry regulation problem and outlines theoretical approaches to its solution. Unregulated private forestry is found to present opportunities for government intervention, the gains from which could exceed the losses. Proposed is a public goal of maximizing net satisfactions from Oregon's private forest lands, subject to specified constraints and assumptions This goal is derived in a chapter on welfare economics. Following an evaluation of past regulation goals and approaches, the study discusses guidelines for regeneration and logging regulations consistent with the assumed regulatory objective In a full employment economy it appears that public regulation of private forestry is which the unregulated market would attain (ignoring non-wood benefits). However, government leasing of private land for wood production does provide a possibility of increased satisfactions from wood output. Upon considering non-market forest benefits and undesirable side-effects of logging, welfare-increases from intervention are shown to be possible. After reviewing the concept of optimal levels of spill-over effects, the study points out the possibility that optimal levels of nonmarket damages could depend on whether the liability for damage reduction is placed on the victims or the damager. Considering both liability viewpoints, a scheme for determining optimal regeneration regulations is outlined for cases where non-market values are at stake. Approaches to optimizing levels of external non-market damages from logging are then examined under each liability scheme, considering actions causing changes in single or joint benefits. The importance of distinguishing between mutually exclusive and additive management practices is illustrated. Forestry-caused environmental changes discussed under nonmarket benefits include variations in water siltation and temperature, fish and big game populations, and scenic beauty. The study aims to assist economists advising planners of forest practices legislation and administrative regulations. Much of the information presented would be useful in designing such intervention today to approach the study's assumed regulatory goal. Other more detailed decision guides are proposed for research to determine optimal regulations on study areas. Broad application of such research results could increase welfare by a greater amount than could preliminary regulations designed immediately. Throughout the study, emphasis is placed upon the need for, and possibility of, making incremental analyses comparing marginal benefits and costs even when these marginal quantities are in different units. Evaluation of regulatory alternatives is left to decision makers, the study simply illustrates ways of arraying and comparing alternative.
Download or read book Trees to Tap written by Jon A. Souder and published by . This book was released on 2021-09-10 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: FORESTS PRODUCE ECONOMIC BENEFITS such as timber, forest products and jobs. They also provide wildlife habitat, recreation, carbon storage and clean water. In fact, most of Oregon's drinking water is sourced from our forests. But logging, forest road building, using herbicides and other activities related to growing and harvesting timber can impact the quality and quantity of water. Oregon State University scientists examine these links in this comprehensive look at watershed health.
