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Silviculture Practices for Enhancing Old Forest Stand Structure in Red- and Blue-Listed Plant Communities in the CDFmm Interim Document
This document addresses the challenge of balancing timber harvesting with the conservation of at-risk plant communities that depend on mature and old forest conditions in British Columbia's Coastal Douglas Fir biogeoclimatic zone. Recognizing the sca...This document addresses the challenge of balancing timber harvesting with the conservation of at-risk plant communities that depend on mature and old forest conditions in British Columbia's Coastal Douglas Fir biogeoclimatic zone. Recognizing the scarcity of these older forests, the document outlines silvicultural practices aimed at maintaining existing structural diversity in high-conservation areas and accelerating the development of old-growth characteristics in younger, more homogenous stands. Ultimately, it seeks to equip forest professionals with strategies to enhance the ecological functions of older forests within provincial forest lands. -
British Columbia's Interior Fisher Wildlife Habitat Decision Aid
This document synthesizes scientific and experiential knowledge regarding the habitat needs of fishers, a forest-dependent carnivore considered a Species at Risk. The guide offers practical considerations for managing forests within fisher territorie...This document synthesizes scientific and experiential knowledge regarding the habitat needs of fishers, a forest-dependent carnivore considered a Species at Risk. The guide offers practical considerations for managing forests within fisher territories, covering aspects like denning, resting, and foraging habitats, aiming to help maintain essential resources during forestry operations such as harvesting and silviculture. This document seeks to integrate fisher conservation with forest management practices in British Columbia's interior. -
Silvicultural Systems
This webinar details the core concepts of silvicultural systems, which are comprehensive approaches to forest management defined by three continuous elements: regeneration, tending, and harvesting. These systems are structured along a practical spect...This webinar details the core concepts of silvicultural systems, which are comprehensive approaches to forest management defined by three continuous elements: regeneration, tending, and harvesting. These systems are structured along a practical spectrum of harvest intensity, starting with low-disturbance selection methods suitable for shade-tolerant species and culminating in high-intensity treatments like clearcutting, which favor light-demanding species. The choice of technique, such as the multi-step shelterwood method or the more localized seed tree method, depends entirely on the desired future condition of the stand and the ecology of the target tree species. Successful silviculture is presented as both a science and an art, requiring creative application of various treatments, including intermediate thinning, to achieve specific outcomes. -
Variable Retention Decision Aid for Biodiversity and Habitat Retention
This extension note serves as a practical guide for forest managers in coastal British Columbia. It introduces the variable retention silvicultural system, a method focused on retaining important ecological features like old trees and snags during h...This extension note serves as a practical guide for forest managers in coastal British Columbia. It introduces the variable retention silvicultural system, a method focused on retaining important ecological features like old trees and snags during harvesting to support biodiversity and habitat connectivity. The aid outlines key considerations for planning and implementing VR, including identifying biological anchors, setting retention targets based on landscape context and management objectives, and managing potential risks such as windthrow and dwarf mistletoe, ultimately aiming for sustainable forest management that balances timber harvesting with ecological values. -
Silviculture Treatments for Ecosystem Management in the Sayward (STEMS) Establishment Report for STEMS 1 Snowden Demonstration Forest
This document details the establishment of a significant forestry experiment called Silviculture Treatments for Ecosystem Management in the Sayward. The core purpose of STEMS is to compare different forest harvesting and management techniques beyond ...This document details the establishment of a significant forestry experiment called Silviculture Treatments for Ecosystem Management in the Sayward. The core purpose of STEMS is to compare different forest harvesting and management techniques beyond traditional clearcutting in second-growth Douglas-fir stands. This comparison evaluates their impacts on forest productivity, economics, and public perception, aiming to provide scientific data for making informed decisions about sustainable, multiple-use forest management. The project replicates a similar study in Washington State to enhance the reliability and broader applicability of its findings, addressing the increasing demand for forestry practices that balance timber production with ecological and social values. -
Roberts Creek Study Forest - Harvesting, Windthrow, and Conifer Regeneration Within Alternative Silviculture Systems in Douglas-fir Dominated Forests on the Sunshine Coast
This document details the establishment and early findings of the Roberts Creek Study Forest. The RCSF was created to demonstrate and evaluate various alternatives to clearcutting in mature Douglas-fir dominated forests on the Sunshine Coast. By impl...This document details the establishment and early findings of the Roberts Creek Study Forest. The RCSF was created to demonstrate and evaluate various alternatives to clearcutting in mature Douglas-fir dominated forests on the Sunshine Coast. By implementing different silvicultural systems, such as dispersed retention and extended rotation, the study aims to assess their impacts on aspects like harvesting, windthrow, and the regeneration of conifer species like Douglas-fir and western redcedar, while also considering ecological, social, and economic objectives in forest management. The report outlines the study area, methodologies used for different treatments, and presents initial results regarding post-harvest stand structure, soil disturbance, windthrow patterns, seedfall, and both natural and planted regeneration. -
Montane Alternative Silviculture Systems (MASS) - Understory Vegetation Response to Alternative Silvicultural Treatments and Systems 26 Year Results
This report details the 26-year results of the Montane Alternative Silvicultural Systems Project, an integrated, long-term study designed to evaluate the biological consequences of different harvesting approaches in montane coastal forests of Britis...This report details the 26-year results of the Montane Alternative Silvicultural Systems Project, an integrated, long-term study designed to evaluate the biological consequences of different harvesting approaches in montane coastal forests of British Columbia. Researchers quantified changes in understory vegetation cover, diversity, and conifer regeneration across four systems, including clearcutting and various forms of tree retention, compared to an old-growth benchmark. The study found that while all harvesting methods led to an eventual increase in overall species richness, the uniform shelterwood retained more stand structure and pre-harvest plant species initially. The findings suggest that the retention of relatively intact mature forest patches is the most effective approach for conserving plant and non-vascular species associated with older forests. -
Windthrow Monitoring of Alternative Silvicultural Systems in Montane Coastal Forests
This research documents a six-year monitoring study at the Montane Alternative Silvicultural Systems site, examining how different harvesting methods influence the likelihood of windthrow damage in coastal montane forests. The study quantified stem ...This research documents a six-year monitoring study at the Montane Alternative Silvicultural Systems site, examining how different harvesting methods influence the likelihood of windthrow damage in coastal montane forests. The study quantified stem loss across four treatments, including clearcut, shelterwood, green tree retention, and patch cut, finding that windthrow losses were substantial across the site, which was not initially considered high risk. Although low-density green tree retention experienced the highest proportion of damaged trees, the overall greatest number of wind-damaged stems occurred in the shelterwood treatment. The data indicates that small, concentrated patch cuts resulted in the lowest amount of windthrow, suggesting that grouped retention is a more effective strategy than dispersed retention for minimizing wind damage. The authors conclude that adopting group retention strategies can better conserve structural forest elements while addressing challenges related to windthrow risk. -
Montane Alternative Silviculture Systems (MASS) - Testing Operational Economic and Biological Impacts of Alternatives to Clearcutting in a Coastal Montane Forest on Vancouver Island, British Columbia
This study documents the Montane Alternative Silvicultural Systems project, a long-term cooperative study on Vancouver Island, British Columbia, established to find forest management practices that could replace conventional clearcutting in high-ele...This study documents the Montane Alternative Silvicultural Systems project, a long-term cooperative study on Vancouver Island, British Columbia, established to find forest management practices that could replace conventional clearcutting in high-elevation coastal environments. This research initiative evaluated the operational, economic, and biological consequences of alternatives like patch cuts, green tree retention, and shelterwood logging. The findings cover crucial metrics such as operational costs and feasibility, as well as detailed ecological and silvicultural impacts on forest regeneration, soil health, and local biodiversity. The purpose of the MASS research was to provide the scientific foundation needed for implementing environmentally sustainable harvesting systems, such as variable retention, in the region's complex montane forests. -
Montane Alternative Silvicultural Systems (MASS) Vegetation Plot Photos - Planted Tree Establishment Treatments
This document on the 26-year assessment of the Montane Alternative Silvicultural Systems evaluates the success of planted Amabilis fir and Western Hemlock seedlings established in 1994. The core purpose of the MASS study is to measure the impact of ...This document on the 26-year assessment of the Montane Alternative Silvicultural Systems evaluates the success of planted Amabilis fir and Western Hemlock seedlings established in 1994. The core purpose of the MASS study is to measure the impact of four distinct establishment treatments, including control, fertilization, herbicide, or a combination, on tree growth over time. These treated plots are systematically mapped within the context of various silvicultural harvesting systems, including clearcut, green tree, patch cut, and shelterwood. The images act as an inventory, identifying the specific plot numbers selected for the 2019 photographic evaluation of the long-term experimental outcomes within each system. -
Montane Alternative Silvicultural Systems (MASS) Vegetation Plot Photos - Natural Regeneration and Understory Species
This document on the 26-year assessment of the Montane Alternative Silvicultural Systems study focuses on natural regeneration and understory species within various managed forest environments. The MASS study is highly structured, comparing distinct...This document on the 26-year assessment of the Montane Alternative Silvicultural Systems study focuses on natural regeneration and understory species within various managed forest environments. The MASS study is highly structured, comparing distinct silvicultural systems such as clearcut, shelterwood, and old growth by utilizing three separate replicates for each treatment type. Data collection relies on establishing Permanent Vegetation Plots, which incorporate smaller, precisely defined nested sub-plots to monitor detailed plant life, including herbs, bryophytes, and tagged conifer species like Amabilis fir and Western Hemlock. These images function as a structured index, associating specific plot and photo numbers with each experimental manipulation across the research site. -
Montane Alternative Silvicultural Systems (MASS) Conifer Growth and Understory Vegetation Response to Alternative Silvicultural Treatments and Systems - 15 Year Results
This comprehensive 15-year report details the Montane Alternative Silvicultural Systems Project, which tested the efficacy of different harvesting treatments, including clearcutting, patch cutting, and various forms of retention, on forest health an...This comprehensive 15-year report details the Montane Alternative Silvicultural Systems Project, which tested the efficacy of different harvesting treatments, including clearcutting, patch cutting, and various forms of retention, on forest health and regeneration in coastal British Columbia. Key findings reveal that while conifer survival remained consistent across treatments, tree height and volume growth was generally slower in the shelterwood environment due to reduced light, and the single most effective way to boost planted tree growth was through intensive vegetation control. Conversely, the shelterwood system successfully maintained the greatest understory species diversity and composition most similar to the uncut old-growth forest, minimizing the loss of shade-loving plants. The long-term data emphasizes a crucial trade-off: maximizing early conifer growth favors more open treatments, but retaining pre-harvest biodiversity values is best achieved with substantial canopy protection. -
Montane Alternative Silvicultural Systems (MASS) 25 Year Growth of Planted and Natural Regeneration
The Montane Alternative Silvicultural Systems project is a 25-year study designed to evaluate how different harvesting methods impact regeneration, wildlife habitat, and aesthetics at high elevations on Vancouver Island. This research compared stand...The Montane Alternative Silvicultural Systems project is a 25-year study designed to evaluate how different harvesting methods impact regeneration, wildlife habitat, and aesthetics at high elevations on Vancouver Island. This research compared standard clearcutting with three alternative silvicultural systems including patch cut, green tree, and shelterwood, while tracking the growth and survival of five conifer species. The findings revealed that planted Douglas-fir was the fastest growing species across all treatments, despite experiencing the highest rate of mortality. The research also confirmed that post-planting efforts such as vegetation control significantly improved the volume and growth of species like western hemlock and amabilis fir over the long term. -
Growth Check in Amabilis Fir at the Montane Alternative Silvicultural Systems (MASS) Study Site
This study, conducted at the Montane Alternative Silvicultural Systems site, investigated the phenomenon of growth check in young amabilis fir trees, characterized by a sharp decline in annual height increment approximately ten years after planting....This study, conducted at the Montane Alternative Silvicultural Systems site, investigated the phenomenon of growth check in young amabilis fir trees, characterized by a sharp decline in annual height increment approximately ten years after planting. Researchers hypothesized that this severe growth limitation was linked to aggressive competition from ericaceous shrubs, such as Vaccinium species, resulting in limited nutrient availability, particularly nitrogen deficiency. By comparing different harvest treatments and the use of early herbicide treatment, the study concluded that vegetation control was the most significant factor in maintaining growth - trees without herbicide were often severely stunted and exhibited greater Vaccinium cover. The findings establish that high shrub competition coupled with low foliar nitrogen are reliable indicators for diagnosing and predicting this critical growth failure on coastal montane sites. -
Factors Influencing the Density of Natural Regeneration in Uniform Shelterwoods Dominated by Douglas-fir in the Sub-Boreal Spruce Zone
This study investigates the factors influencing natural regeneration in uniform shelterwood systems, specifically focusing on Douglas-fir in the Sub-Boreal Spruce Zone. The study details methods for assessing seedfall density, seed predation, seedbed...This study investigates the factors influencing natural regeneration in uniform shelterwood systems, specifically focusing on Douglas-fir in the Sub-Boreal Spruce Zone. The study details methods for assessing seedfall density, seed predation, seedbed distribution, and the germination and survival rates of seedlings under various harvesting treatments. The core purpose is to understand how these elements interact to determine successful conifer regeneration, particularly noting that rotting wood and mineral soil are superior seedbeds compared to forest floor and moss, and that while harvesting can increase mineral soil exposure, it is often insufficient to maximize regeneration without additional scarification. The findings suggest that while all tested shelterwood methods promote adequate regeneration and frost protection, lower residual basal areas combined with significant forest floor disturbance are most favorable for Douglas-fir seedling growth and survival. -
Harvesting and Silviculture Systems to Protect Immature White Spruce and Enhance Deciduous Regeneration in Boreal Mixedwoods
This paper investigates innovative harvesting and silvicultural systems designed to sustainably manage western Canada's boreal mixedwood forests, specifically focusing on the protection of immature white spruce while simultaneously enhancing deciduou...This paper investigates innovative harvesting and silvicultural systems designed to sustainably manage western Canada's boreal mixedwood forests, specifically focusing on the protection of immature white spruce while simultaneously enhancing deciduous regeneration. The studies were conducted in central and northern Alberta with the aim to develop cost-effective and operational methods for balancing the needs of conifer and deciduous users to maintain biodiversity and ecosystem sustainability. Key findings include the demonstration that specific equipment and techniques can significantly reduce damage to spruce during harvest, with particular emphasis on feller-buncher operations, carefully planned machine corridors, and wind buffers to mitigate blowdown. -
Strathcona Elk Winter Range Enhancement Project
This document details the Strathcona Elk Winter Range Enhancement Project, a multi-year initiative in British Columbia focused on improving habitat for Roosevelt elk. The project's main goals were to increase forage production, create better cover, a...This document details the Strathcona Elk Winter Range Enhancement Project, a multi-year initiative in British Columbia focused on improving habitat for Roosevelt elk. The project's main goals were to increase forage production, create better cover, and ultimately support a healthier elk population through various habitat enhancement trials, including seeding, pruning, and clearing. The report summarizes the methodology, results, and recommendations from the 2004 efforts, highlighting observations on forage growth, browse availability, and elk usage patterns, alongside financial expenditures and the project's long-term objectives for elk conservation within the Strathcona Provincial Park and surrounding valleys. -
Comparison of Harvesting Phases in a Case Study of Partial Cutting Systems in Southwestern British Columbia
This report details a collaborative study evaluating different timber harvesting methods in dry Douglas-fir ecosystems. The primary goal was to compare the productivity of clearcutting with various variable retention treatments (seed-tree, regenerati...This report details a collaborative study evaluating different timber harvesting methods in dry Douglas-fir ecosystems. The primary goal was to compare the productivity of clearcutting with various variable retention treatments (seed-tree, regeneration cut, removal cut), utilizing both cable-yarding and ground-skidding systems. The study also aimed to identify operational factors affecting varibale retention efficiency and to validate procedures for these systems, noting that factors like piece size, slope, and yarding/skidding distance often overshadowed the cutting pattern's influence on productivity. -
Harvesting Options in Highly Constrained IDF Stand in the Rocky Mountain Trench
This docuemnt details a case study on harvesting options in a highly constrained forest stand within the Rocky Mountain Trench, focusing on an experimental forest management pilot project. The primary goal was to evaluate different harvesting methods...This docuemnt details a case study on harvesting options in a highly constrained forest stand within the Rocky Mountain Trench, focusing on an experimental forest management pilot project. The primary goal was to evaluate different harvesting methods such as conventional, single tree, and group selection on soil disturbance and armillaria root disease. The study describes the site's characteristics, experimental design, and the specific silvicultural prescriptions implemented to achieve objectives like maintaining water levels and reducing disease susceptibility. It further outlines the harvesting operations conducted and presents preliminary results regarding the impact of each method on stand health and soil integrity. -
Partial Cutting to Restore Old Growth Forest Conditions in the East Kootenay Trench
This document details a case study on varaible retention as a method to restore old-growth forest conditions in British Columbia's East Kootenay region. It explains how historical land management, including fire suppression, drastically altered fores...This document details a case study on varaible retention as a method to restore old-growth forest conditions in British Columbia's East Kootenay region. It explains how historical land management, including fire suppression, drastically altered forest structures, leading to a decline in biodiversity and an increase in fire risk. The study outlines a silvicultural prescription designed to mimic natural disturbances by strategically removing timber, aiming to re-establish the characteristics of pre-settlement old-growth stands, such as varied tree sizes and increased light penetration. The purpose of this study is to demonstrate a sustainable management approach that not only mitigates fire hazards but also enhances wildlife habitat and supports the long-term health of the forest ecosystem.
