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Competitive Effects Of Trembling Aspen On Lodgepole Pine Performance In The Sbs And Idf Zones Of The Cariboo Chilcotin Region Of South Central British Columbia
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Book Synopsis Competitive Effects of Trembling Aspen on Lodgepole Pine Performance in the SBS and IDF Zones of the Cariboo-Chilcotin Region of South-central British Columbia by : Teresa A. Newsome
Download or read book Competitive Effects of Trembling Aspen on Lodgepole Pine Performance in the SBS and IDF Zones of the Cariboo-Chilcotin Region of South-central British Columbia written by Teresa A. Newsome and published by . This book was released on 2003 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes & presents results of a retrospective study carried out between 1992 and 1999 in the Cariboo-Chilcotin region of British Columbia to quantify the effects of trembling aspen competition on lodgepole pine performance, and to identify competition indices or other measures of competition that could be used by field staff. Target pine were selected across neighbourhoods in six stands with varying densities of aspen. Data pertaining to pine size & condition, and to the size & location of aspen within a 70-inch radius of the pine were collected three times. Measurements began when the stands were seven to 12 years old. Various approaches are used to identify levels of aspen abundance when pine performance declined below acceptable levels. These include analyses of regression & correlation, tests of existing competition indices, and visual & statistical characterization of trends. Finally, conservative recommendations are made for the retention of aspen within pine stands in the Cariboo-Chilcotin region.
Book Synopsis Relative Impact of Aspen Competition and Soil Factors on the Performance of Lodgepole Pine and Hybrid White Spruce in North-central British Columbia by : C. DeLong
Download or read book Relative Impact of Aspen Competition and Soil Factors on the Performance of Lodgepole Pine and Hybrid White Spruce in North-central British Columbia written by C. DeLong and published by . This book was released on 2007 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Releasing conifers from the competition effects of aspen (Populus tremuloides Michx.) is a key focus of plantation management in sub-boreal and boreal forests, often at considerable cost. However, other factors affect early plantation performance. This study investigates the relative influence of aspen competition and soil factors on the performance of planted lodgepole pine (Pinus contorta Dougl. ex Loud.) and hybrid white spruce (Picea glauca [Moench] Voss x engelmannii Parry ex Engelm.) in north-central British Columbia. Plots were established across a gradient of natural aspen competition levels that resulted from a test of aspen control treatments at one site. Within these plots, 240 of each of the target conifer species were measured and their immediate soil and vegetative environment quantified. Regression trees and regression analysis were used to examine the importance of aspen competition relative to other factors in determining target conifer size."--Document.
Book Synopsis Early Effects of Manipulating Aspen Density on Lodgepole Pine Performance, Aspen Sucker Production and Stand Development in the IDFxm Subzone Near Williams Lake, B.C. by : Teresa A. Newsome
Download or read book Early Effects of Manipulating Aspen Density on Lodgepole Pine Performance, Aspen Sucker Production and Stand Development in the IDFxm Subzone Near Williams Lake, B.C. written by Teresa A. Newsome and published by . This book was released on 2004 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trembling aspen (Populus tremuloides Michx.) is a common component of forests throughout interior British Columbia, particularly in north and central parts of the province. In the Cariboo-Chilcotin area of the Southern Interior Forest Region, aspen commonly regenerates along with planted and natural lodgepole pine (Pinus contorta var. latifolia Engelm.) in the Interior Douglas-fir (IDF), Sub-Boreal Spruce (SBS), Sub-Boreal Pine-Spruce (SBPS), and Interior Cedar-Hemlock (ICH) biogeoclimatic zones. Although aspen can be a strong competitor with shade-intolerant pine, maintaining a low-density aspen component within stands offers many benefits to both individual conifers and the site as a whole. Until recently, managing aspen included reducing its presence among young pine as much as possible by applying aggressive site preparation and brushing treatments. While strategies for managing mixed broadleaf-conifer stands are now changing throughout British Columbia, forest practitioners still require information about threshold levels of broadleaves that can be retained without seriously affecting conifer performance. A retrospective study to investigate the effects of aspen competition on lodgepole pine in the Cariboo region was established in 1992 and, by 1997, results were suggesting that dry-belt (IDFdk) thresholds for aspen as tall or taller than target pine were in the range of 2000-5000 stems ha-1. To investigate pine-aspen interactions further and to more clearly define thresholds for aspen retention in the Cariboo-Chilcotin dry-belt, a variable density study was established in 1998 at a site near Meldrum Creek in the IDFxm subzone. This technical report presents 4th-year results of that study.
Book Synopsis Early Effects of Manipulating Aspen Density and Special Arrangement on Lodgepole Pine Performance, Aspen Sucker Production and Stand Development in an 11-year Old Stand in the SBPSxc Subzone of South-central British Columbia by : Teresa A. Newsome
Download or read book Early Effects of Manipulating Aspen Density and Special Arrangement on Lodgepole Pine Performance, Aspen Sucker Production and Stand Development in an 11-year Old Stand in the SBPSxc Subzone of South-central British Columbia written by Teresa A. Newsome and published by . This book was released on 2006 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mixtures of trembling aspen (Populus tremuloides Michx.) and lodgepole pine (Pinus contorta var. latifolia Engelm.) regenerate naturally throughout the Sub-Boreal Pine-Spruce (SBPS), Interior Douglas-fir (IDF), Sub-Boreal Spruce (SBS), and Interior Cedar-Hemlock (ICH) zones in the Cariboo-Chilcotin area of the Southern Interior Forest Region. Due to the rapid height growth and high initial sucker densities of young aspen, these stands generally require some management at the juvenile stage to meet conifer growth objectives. Strategies designed to lessen competition from young aspen have become more complex over the past decade. In light of current understanding of the importance of broadleaf tree species to overall ecosystem health, successful management of young pine-aspen stands now requires practitioners to find a balance between removing aspen to meet lodgepole pine growth objectives and retaining as much aspen as possible to preserve the ecosystem benefits conferred by broadleaf species, reduce suckering, and reduce silviculture treatment costs. The Clusko aspen removal study, established in 2001 in an 11-year-old lodgepole pine-trembling aspen stand in the SBPSxc subzone, investigates the effects of five levels of aspen removal on target pine, neighbourhood competitive interactions, and stand development. Treatments include: (1) an untreated control; (2) complete aspen removal; broadcast retention of (3) 1000 and (4) 2500 aspen stems ha-1; and (5) a spatial treatment that removed aspen within a 1-m radius around target pine. This report presents second-year results from the Clusko River (Clusko) study.
Book Synopsis Climate and Its Relevance to Lodgepole Pine Performance at the Sub-boreal Bednesti Research Site Over a 30-year Period (EP0995) by : Robert Matthew Sagar
Download or read book Climate and Its Relevance to Lodgepole Pine Performance at the Sub-boreal Bednesti Research Site Over a 30-year Period (EP0995) written by Robert Matthew Sagar and published by . This book was released on 2019 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Adjusting Free-growing Guidance Regarding Aspen Retention in the Cariboo-Chilcotin by : Teresa A. Newsome
Download or read book Adjusting Free-growing Guidance Regarding Aspen Retention in the Cariboo-Chilcotin written by Teresa A. Newsome and published by . This book was released on 2016 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2008, a Working Group that included British Columbia government staff (researchers, stewardship foresters, and wildlife habitat experts), a research consultant, and industry foresters was formed in the Cariboo Region of south-central British Columbia to determine how existing research concerning conifer#x13;broadleaf competitive relationships could be used to suggest change to free-growing guidelines for that region. The objective was to adjust free-growing criteria concerning broadleaf tree presence in coniferous plantations while maintaining consistency with biological thresholds for conifer growth that had been determined by local research. ...
Book Synopsis Lodgepole Pine Response to Aspen Removal in Variable Radii in the SBSdw2 Variant Near Williams Lake, B.C. by : Teresa A. Newsome
Download or read book Lodgepole Pine Response to Aspen Removal in Variable Radii in the SBSdw2 Variant Near Williams Lake, B.C. written by Teresa A. Newsome and published by British Columbia, Forest Science Program. This book was released on 2004 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mixed forests of lodgepole pine (Pinus contorta var. latifolia Engelm.) and trembling aspen (Populus tremuloides Michx.) are common throughout interior British Columbia, particularly in north and central areas of the province. In the Cariboo-Chilcotin area of the Southern Interior Forest Region, aspen commonly regenerates along with planted and natural lodgepole pine in the Sub-Boreal Spruce (SBS), Interior Douglas-fir (IDF), Sub-Boreal Pine-Spruce (SBPS), and Interior Cedar-Hemlock (ICH) zones. Historically, aspen has been regarded as a "weed" that competes with conifers, but silviculturists now recognize that there are many benefits to maintaining a broadleaf component within stands. A study was established in 1994 in the SBSdw2 variant of the Cariboo-Chilcotin region of the Southern Interior Forest Region to investigate the effects of removing aspen in 50 or 100 cm radii around crop lodgepole pine versus broadcast removal or no treatment. The primary objective of the study was to assess whether the free-growing criterion (current in 1994), which specified that no overtopping vegetation could be present within a 1 m radius around crop trees, was appropriate in pine-aspen stands, or whether a 50 cm radius zone would be adequate.
Book Synopsis Effects of Variable Aspen Retention on Stand Development, Aspen Sucker Production and Growth of Lodgepole Pine in the SBSdw1 Variant of South-central British Columbia by : Teresa A. Newsome
Download or read book Effects of Variable Aspen Retention on Stand Development, Aspen Sucker Production and Growth of Lodgepole Pine in the SBSdw1 Variant of South-central British Columbia written by Teresa A. Newsome and published by . This book was released on 2006 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mixtures of trembling aspen (Populus tremuloides Michx.) and naturally regenerated or planted lodgepole pine (Pinus contorta var. latifolia Engelm. ex S. Wats.) occur throughout interior British Columbia. To develop effective management strategies for mixed stands where softwood timber production is the primary objective, silviculturists need information about levels of broadleaves that can be retained without seriously reducing conifer performance. They also require practical guidance on using this information to develop cost-effective treatment prescriptions. To address this topic in the Cariboo-Chilcotin, a pine-aspen competition project that includes studies in a variety of ecosystems is currently under way. In 1999, an operational trial to study the effects of variable aspen retention on stand-level lodgepole pine performance and aspen sucker production was established near McKinley Lake in the SBSdw1 variant of the Central Cariboo Forest District. The study was a co-operative undertaking by the B.C. Ministry of Forests and Weldwood of Canada, Ltd. In 2002, the study was adopted by the Silvicultural Systems Research Group of the Southern Interior Forest Region as part of the pine-aspen competition project, and objectives and methods were subsequently adapted to include the collection of long-term growth and yield and stand development data. This report summarizes fourth-year pine and aspen responses to aspen retention treatments, and provides baseline stand development information.
Book Synopsis Canadian Journal of Forest Research. Journal Canadien de la Recherche Forestière by :
Download or read book Canadian Journal of Forest Research. Journal Canadien de la Recherche Forestière written by and published by . This book was released on 2005 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis British Columbia Rangeland Seeding Manual by : Allan Dobb
Download or read book British Columbia Rangeland Seeding Manual written by Allan Dobb and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Managing Identified Wildlife : Procedures and Measures by : British Columbia. Ministry of Forests
Download or read book Managing Identified Wildlife : Procedures and Measures written by British Columbia. Ministry of Forests and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Forest Practices Code guidebooks help forest resource managers plan, prescribe and implement sound forest practices that comply with the Forest Practices Code. This guidebook is designed to be a "fine filter" approach to addressing habitat requirements of critical wildlife, in addition to the "coarse filter" approach provided by the Biodiversity Guidebook and the Riparian Management Area Guidebook.
Author :British Columbia. Ministry of Forests Publisher :University of British Columbia Press ISBN 13 : Total Pages :992 pages Book Rating :4.:/5 (319 download)
Book Synopsis Establishment to Free Growing Guidebook, Cariboo Forest Region by : British Columbia. Ministry of Forests
Download or read book Establishment to Free Growing Guidebook, Cariboo Forest Region written by British Columbia. Ministry of Forests and published by University of British Columbia Press. This book was released on 2000 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focuses on the legal requirements for establishment and maintenance of a free growing stand in the Caribbo Forest Region.
Book Synopsis How to Hold a Crocodile by : Diagram Group
Download or read book How to Hold a Crocodile written by Diagram Group and published by Firefly Books. This book was released on 2003 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explains how to do practical and improbable things, such as how to roast an ox, handle a hamster, photography a fish, play the bagpipes, and vanquish a vampire.].
Book Synopsis Stand Management Prescription Guidebook by : British Columbia. Ministry of Forests
Download or read book Stand Management Prescription Guidebook written by British Columbia. Ministry of Forests and published by . This book was released on 1995 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: A stand management prescription is a document for describing actions to be carried out on a free-growing site to see that stand management activities are planned and implemented to maintain or enhance site productivity, to ensure that resource values are identified and taken into account, and to set out a series of stand management activities to produce a stand that meets the management objectives. This guide provides a logical sequence of steps on how to prepare and administer a stand management prescription in accordance with the Forest Practices Code of British Columbia. These steps include identification and collection of background information, setting of stand-level resource objectives, conducting fieldwork, preparation of the final prescription, production of the stand management prescription map, and administration.
Book Synopsis Seed and Vegetative Material Guidebook by : British Columbia. Forest Service
Download or read book Seed and Vegetative Material Guidebook written by British Columbia. Forest Service and published by . This book was released on 1995 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Forest Practices Code guidebooks help forest resource managers plan, prescribe and implement sound forest practices that comply with the Forest Practices Code. This guidebook is intended to help forest managers meet Forest Practices Code standards with respect to planning, collecting, registering and using seed and vegetative material.
Book Synopsis Guidelines for Developing Stand Density Management Regimes by : British Columbia. Forest Practices Branch
Download or read book Guidelines for Developing Stand Density Management Regimes written by British Columbia. Forest Practices Branch and published by British Columbia, Forest Practices Branch. This book was released on 1999 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stand density management is the process of controlling tree density within a stand to achieve desired objectives. Stand density management practices include the spacing of planted trees, pre-commercial thinning, and commercial thinning. A sound density management prescription must consider three elements of prediction: biological responses of the stand to treatment, economic implications of the treatment, and forest-level effects of the treatment. This document provides essential information on each of these elements, and provides a structured decision process for making site-specific density management prescriptions. Sections of the document cover the biological concepts of timber production, economic principles of timber production, forest planning considerations, the decision process, and density management planning tools. Includes glossary.
Book Synopsis Establishment to Free Growing Guidebook, Kamloops Forest Region by : British Columbia. Ministry of Forests
Download or read book Establishment to Free Growing Guidebook, Kamloops Forest Region written by British Columbia. Ministry of Forests and published by . This book was released on 2001 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
