Download or read book Hydrologic Effects of Mountain Pine Beetle Infestation and Salvage harvesting Operations written by John F. Rex and published by . This book was released on 2009 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project was developed to identify a set of risk indicators to predict the risk of summer-ground loss at the watershed level within the Vanderhoof Forest District (VFD) and others, subsequent to the mountain pine beetle (MPB) infestation of lodgepole pine stands. This report was done in relation to the VFD annual cut of stands, and the following difficultings that operators found in running their equipment in wet versus dry soils in harvest years. Risk indicators were selected from available GIS information, aerial photographs, and local knowledge. The most effective indicators for predicting the risk of wet-ground areas at the watershed level were found to be lodgepole pine content, understorey, drainage density, sensitive soils, and the topographic index, all of whose values are available from provincial databases. The work includes information on materials and methods, results and discussion, the authors' conclusions, as well as recommendations.--Includes text from document.
Download or read book Quantifying the Water Resource Impacts of Mountain Pine Beetle and Associated Salvage Harvest Operations Across a Range of Watershed Scales written by Markus Schnorbus and published by Canadian Museum of Civilization/Musee Canadien Des Civilisations. This book was released on 2010 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents the results of a project done to assess the potential for impacts and changes to the peak-flow regime throughout various sub-basins of the Fraser River Watershed. The vast size and the physical complexity of the Fraser River Basin make it extremely difficult to directly measure the hydrologic effects of beetle kill and salvage harvesting. As a result, a hydrology model has been used to assess the hydrologic consequences of the current outbreak. The project is part of a larger effort in quantifying the water resource impacts of the pine beetle and salvage harvesting across a range of watershed scales.--Includes text from document.
Download or read book Impact of Mountain Pine Beetle Infestation and Salvage Harvesting on Seasonal Snow Melt and Runoff written by Sarah Boon and published by . This book was released on 2008 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This study examines the impact of mountain pine beetle infestation on forest canopy structure on the Nechako Plateau, and the resulting impacts on snow accumulation and ablation under varied climatic conditions. Stand-scale results were used to drive a physically-based, distributed hydrological model of the Van Tine Creek watershed and assess watershed-scale hydrologic response to four harvesting/infestation scenarios."--Document.
Download or read book A Synthesis of the Hydrological Consequences of Large scale Mountain Pine Beetle Disturbance written by Markus Schnorbus and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mountain Pine Beetle written by Fred L. Bunnell and published by . This book was released on 2011 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document provides a synthesis of recently completed studies to assess the ecological consequences of forest management after attack by mountain pine beetle or other large-scale disturbances. Studies are assessed for their contributions to gaps in knowledge previously identified in the Mountain Pine Beetle Initiative Working Paper "Evaluating effects of large scale salvage logging for mountain pine beetle on terrestrial and aquatic vertebrates," which was published in 2004. This report focuses on studies developed through the federal Mountain Pine Beetle Initiative, the federal Mountain Pine Beetle Program, and the complementary BC Forest Science Program. Relevant information from other jurisdictions is sometimes included to augment those studies. Topics examined are: the impacts of beetle kill and salvage operations on habitat attributes; the impacts of beetle kill and salvage operations on attendant processes, such as snag fall rates, light interception, and snow accumulation; and the wildlife response to large-scale beetle outbreaks and management strategies. For each of these three topics, we provide a summary of: research to date; pertinent findings to date; and gaps in research.
Download or read book Review and Synthesis of Potential Hydrologic Impacts of Mountain Pine Beetle and Related Harvesting Activities in British Columbia written by J. F. Hélie and published by . This book was released on 2005 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Pine Beetle Infestations and Treatments on Hydrology and Geomorphology written by Younes Alila and published by . This book was released on 2009-01-01 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mountain pine beetle (MPB) epidemic is creating disturbances with unprecedented values of equivalent cut area over larger watersheds. While the effect of these disturbances on the watershed hydrologic response could be significant, it cannot be inferred from the current literature. The present knowledge of hydrologic changes resulting from forest disturbances is based on experiments conducted either at the stand level or on small watersheds less than few square kilometres. The main objective of this study is to predict the magnitude of the impact of MPB infestations and treatments by salvage logging on the water yield and peak flow regimes and the subsequent implications on channel geomorphology at multiple scales.--Document.
Download or read book Mountain Pine Beetle and Salvage Harvesting Influence on Small Stream Riparian Zones written by John F. Rex and published by . This book was released on 2009 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper reports on the investigation of the influence of the mountain pine beetle infestation and salvage harvesting on small stream and riparian zone ecological function, shade, and temperature. Small streams (less than a 2 m bankfull width) were selected because they are the most prominent stream type within a watershed and they determine many ecological characteristics of larger downstream channels.--Document.
Download or read book The Effect of Downed trees on Harvesting Productivity and Costs in Beetle killed Stands written by Yaejun Kim and published by . This book was released on 2016 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mountain pine beetle has impacted over 5 million hectares of pine forests in the Rocky Mountains region in the United States. Although some beetle-killed stands are available for salvage harvesting, there are many uncertainties in harvesting beetle-killed stands including safety, costs, recoverable products and their values. These uncertainties impose limitations on the ability of land managers to make timely decisions regarding beetle-killed stand management. This study aimed to quantify the difficulty of harvesting operations in beetle-killed forest stands with various downed-tree proportions. A detailed time study was conducted on a whole tree clear-cut harvest using a ground-based system in western Montana in August 2015. The effects of downed-trees on machine productivity and cost were analyzed using the collected field data. Our results indicated that tree conditions, including standing or down, not only significantly affected the productivity of the feller-buncher, but also affected the unit costs and productivity of the entire harvesting system, changing of the bottleneck machine in a combined felling, skidding and delimbing operation. This research also provided insight into how optimized system configuration may help cope with the increase of harvesting cost caused by the temporal changes in beetle-killed stand conditions, allowing forest managers and practitioners to understand the potential impact of delayed stand management decisions on harvesting costs and outcomes.
Download or read book The Effect of Mountain Pine Beetle Attack and Salvage Harvesting on Streamflows written by British Columbia. Forest Practices Board and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mountain Pine Beetle written by United States. Congress. House. Committee on Natural Resources. Subcommittee on Water and Power and published by . This book was released on 2009 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluating Effects of Large scale Salvage Logging for Mountain Pine Beetle on Terrestrial and Aquatic Vertebrates written by Fred L. Bunnell and published by . This book was released on 2004 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Net Precipitation Within Small Group Infestations of the Mountain Pine Beetle written by and published by . This book was released on 1991 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrologic Impacts of the Mountain Pine Beetle in Headwater Streams of the Black Hills of Western South Dakota written by Brian Lawrence Freed and published by . This book was released on 2016 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountain pine beetle (Dendroctonus ponderosae) infestation has affected large areas of the central and southern Black Hills of western South Dakota, similar to elsewhere in the Rocky Mountains. The hydrologic response of watersheds to pine beetle infestation has been studied by other researchers; these were typically for sub alpine settings where runoff is dominantly derived from snowpack. There is a need for investigations of the hydrologic response of ponderosa pine (Pinus ponderosa) forests, which are not snow dominated systems, but rather are semi-arid settings where evapotranspiration potentially plays a greater role in the hydrologic budget. The Rainfall Response Aquifer and Watershed Flow (RRAWFLOW) model has been successfully used to model springflow in the Black Hills, including Rhoads Fork Spring in the headwaters of Rapid Creek.
Download or read book A Synthesis of the Hydrological Consequences of Large scale Mountain Pine Beetle Disturbance written by Markus Schnorbus and published by . This book was released on 2011 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current synthesis is a review of research examining the effects of large-scale mountain pine beetle (MPB)-related disturbance conducted predominantly over the past five years. The emphasis is on research that explicitly examines the impact of beetle kill (or biotic disturbance in general) and the cumulative effects of large scale salvage harvesting operations in response to beetle kill. In general, forest disturbance has been found to increase snow accumulation and melt, reduce interception loss and evaporation, and increase runoff and stream flow.--Document.
Download or read book Salvage Harvest Effects on Advance Tree Regeneration Soil Nitrogen and Fuels Following Mountain Pine Beetle Outbreak in Lodgepole Pine written by Jacob M. Griffin and published by . This book was released on 2013 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The extent and severity of recent native bark beetle (Dendroctonae) outbreaks in western North America have created a pressing need for forest managers to understand potential consequences of post-disturbance management. For example, post-outbreak timber harvest (i.e., salvage harvest) could alter future forest development, productivity and susceptibility to subsequent disturbance. To assess the potential for such consequences, we measured first-year effects of post-outbreak timber harvest on tree regeneration, soil nitrogen (N) availability and fuels by using a paired and replicated before?after-control-impact (BACI) experimental design with eight pairs of 0.25-ha plots in beetle-killed lodgepole pine (Pinus contorta var. latifolia) in Greater Yellowstone (Wyoming, USA). Post-outbreak timber harvest reduced total (live + dead) lodgepole pine basal area by 90%. Total sapling density (advance regeneration) declined by about 50% following harvest, with tall (30?140 cm) saplings declining most, but mean post-harvest sapling density still exceeded 1600 stems ha^?1. Relative species density was unaffected and remained dominated by lodgepole pine. Soil temperature at the litter?soil interface was warmer during summer in harvested stands, and soil View the MathML source concentration increased with harvest relative to untreated plots. Soil View the MathML source concentration and resin bag N accumulation increased through time in all beetle-killed plots and were not affected by harvest. Following harvest, dead woody surface fuels in all size categories doubled, and canopy fuel load and canopy bulk density both were reduced; dead fuel depth, duff depth, and canopy base height did not differ between untreated and harvested plots. Harvest did reduce canopy fuels, but the natural progression of needle shedding after beetle-kill accounted for 25?40% of this total canopy fuel reduction. Salvage harvest seems unlikely to alter post-outbreak successional trajectories in these lodgepole pine forests. However, the altered fuel complex (immediate increase in dead woody surface fuels and expected long-term reduction in large-diameter fuels) in harvested plots could cause subsequent fire behavior and effects to differ between harvested and untreated stands.
Download or read book The Effect of Mountain Pine Beetle Attack and Salvage Harvesting on Streamflows written by British Columbia. Forest Practices Board and published by . This book was released on 2007 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
