66 resources found

This document outlines the principles and specific strategies guiding forest management within the Aleza Lake Research Forest. It's structured into key sections covering silvicultural practices, goals, and standards, emphasizing a balanced approach to timber production, ecological values, research, and education. The document details aspects like reforestation methods, species selection, rotation lengths, and management of competing vegetation, all while considering climate change adaptation and forest health. This document serves as a comprehensive guide for ensuring sustainable and diverse forest management on the ALRF landbase, aligning with both provincial regulations and the unique objectives of a research and demonstration forest.

This document details an analysis using the PrognosisBC model to evaluate various partial-cutting silvicultural options for long-term forest management compared to clearcutting. The authors explore how different harvesting methods in a specific forest type could meet sustainability targets, encompassing biodiversity, visual quality, old-growth recruitment, and timber production over a 100-year rotation. By modeling several scenarios and comparing their outputs, the study aims to familiarize readers with the PrognosisBC tool and demonstrate its utility in assessing trade-offs and informing complex forest management decisions, while also acknowledging the model's limitations and the crucial role of professional judgment.

This FREP Report #8 details a timber-focused evaluation of partially harvested forest areas within a specific management unit. Its core purpose was to determine if the resulting stand conditions aligned with the government's objectives for timber, as outlined in the Forest and Range Practices Act. The evaluation employed both routine and intensive assessment methods to analyze various indicators, such as stocking levels, wood volume, and tree quality, and even used growth simulation to predict future stand development under different management scenarios. The report aimed to assess the effectiveness of partial harvesting practices in meeting timber objectives and to provide recommendations for improvement in practices, evaluation methods, and related policies.

This technical report evaluates how different timber harvesting methods affect the microclimate of the Chilcotin Plateau to determine the best strategies for preserving threatened woodland caribou habitat. By comparing traditional clearcuts with partial cutting systems, such as group selection and shelterwoods, researchers tracked critical variables including soil temperature, frost frequency, and snow-melt dates over a seven-year period. The study found that while clearcuts offer warmer soils, partial cuts provide a vital sheltering effect that significantly reduces the occurrence and severity of lethal summer frosts for young trees and essential lichens. This document suggests that strategically managing opening sizes and microsite placement can balance the needs of timber production with the environmental conditions necessary to sustain caribou forage and forest regeneration.

This document evaluates the long-term effectiveness of dispersed tree retention as an alternative to clearcutting in the coast-interior transition zone of British Columbia. By monitoring a Douglas-fir forest near Boston Bar for fifteen years, the study examines how various levels of overstorey shading influence natural regeneration success, stand structure, and biological legacies. The data reveals that while residual trees enhance the micro-climate for new growth, they face significant mortality from windthrow, Douglas-fir bark beetle, and wildfire, leading to a substantial decline in living density over time. This document suggests that while dispersed retention provides valuable biodiversity attributes like snags and woody debris, an aggregated retention pattern might offer greater stability and protection against environmental stressors.

This document investigates the effectiveness of different harvesting methods for establishing Douglas-fir regeneration in the dry climate of British Columbia's interior. By comparing clearcutting against shelterwood systems, which retain partial tree canopies, the authors examine how varying levels of shade and protection influence the survival and size of new trees. The study found that while individual tree growth and crown volume were most robust in clearcut areas, the shelterwood treatments significantly improved the density of natural regeneration. This document suggests that a heavy-removal shelterwood may offer the ideal balance, providing adequate growth rates while acting as an insurance policy for a fully stocked forest.

This document summarizes a decade of experimentation aimed at balancing timber extraction with the preservation of northern caribou habitat in British Columbia. The document outlines various alternative silvicultural systems, such as irregular shelterwood and group selection, to protect the terrestrial and arboreal lichens essential for caribou winter survival. Beyond wildlife management, the text evaluates how these harvesting methods influence forest regeneration, microclimate stability, and windthrow risk compared to traditional clearcutting. This document serves as a scientific foundation for regional recovery plans and sustainable land-use strategies for threatened species in the Southern Interior Forest Region.

This document explores a group shelterwood silviculture system designed to maintain the biological and economic diversity of boreal mixedwood forests in British Columbia. The study investigates how creating strategic gaps in the forest canopy can balance the competing needs of trembling aspen, which thrives in full sunlight, and white spruce, which benefits from partial shade and protection during its early stages. By evaluating initial outcomes related to regeneration density, soil conditions, and the presence of snags and woody debris, this project seeks an alternative to clear-cutting that mimics natural disturbances. This document aims to establish a long-term management framework that sustains timber yields while preserving the complex vertical and horizontal stand structures essential for wildlife habitat and ecosystem health.

This document serves as a first approximation of guidelines for managing forests in British Columbia. Recognizing the historical influence of First Nations' cultural burning and the current challenges of overstocked stands and wildfire risk, it outlines a strategic shift in silvicultural practices. The report details Best Management Practices (BMPs), structured around key aspects like appropriate silvicultural systems, restoration thinning, regeneration, and resilience to disturbances like fire and pests. The document aims to guide practitioners and inform policy, moving towards healthier, more resilient Douglas-fir ecosystems that balance ecological values, community safety, and sustainable resource use.

This LMH Document #79 outlines the principles and best practices for silvicultural systems in British Columbia, emphasizing a shift toward complex, multi-value forest management in the 21st century. Its primary purpose is to serve as a central reference and conceptual framework for forest professionals to design and implement silvicultural plans that move a stand from its current state to a desired future condition through planned interventions, known as stand development pathways. A crucial and recurring theme is the growing role of First Nations, including their traditional knowledge, values, and stewardship goals, which are integrated alongside ecological, social, and economic objectives. The document provides detailed guidance on technical aspects, such as managing for biodiversity, mitigating risks like windthrow and pests, and utilizing adaptive management for continuous improvement in forestry practices.

This FRDA Report #247 details a study comparing different methods of harvesting trees in a coastal montane forest in British Columbia. Prompted by concerns about regeneration success at higher elevations and public desire for alternatives to clearcutting, the Montane Alternative Silvicultural Systems project investigated the productivity and costs associated with uniform shelterwood, green tree retention, and patch cutting compared to traditional clearcutting. The study tracked the efficiency and expense of falling and forwarding operations, alongside measuring the impact on soil disturbance and the amount of remaining woody debris. Ultimately, the research aimed to provide insights into the economic and operational feasibility of alternative silvicultural systems in this challenging environment, while also considering their long-term ecological effects.

This LMH Document #59 outlines a management strategy for mule deer winter ranges specifically within the transition and deep snowpack zones of the Cariboo-Chilcotin region. It's structured in two main parts: the first details winter range management objectives, including long-term spatial goals, access considerations, and stand-level targets for forest structure and species composition, largely employing a group selection silviculture system. The second part provides guidance on planning forest harvests to align with these objectives, offering practical steps and a checklist for implementation, aiming to integrate timber harvesting with the maintenance and restoration of suitable mule deer habitat.

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.

This webinar explores silvicultural options for managing for mature and old-growth forest conditions across a range of forest and ownership types in the US. The consistency of these strategies with other objectives and programs tied to biodiversity conservation, climate mitigation, and forest adaptation are discussed.

This document presents a methodology for refining silviculture guidelines in British Columbia's Prince George region to enhance habitat for grizzly bears. The analysis highlights key ecological differences, noting that mountain bears flourish in open, naturally gappy environments, while plateau bears struggle in dense stands that lack forage opportunities. To address this, the authors recommend using partial cutting systems and reduced tree density to create and maintain canopy gaps that maximize light penetration, stimulating the growth of critical shrubs, roots, and berries, and also suggests protecting features like high stumps and coarse woody debris. Furthermore, this document stresses the importance of minimizing human interaction by deactivating roads and retaining vegetation for security cover, especially near high-value riparian areas. This document provides an adaptive management framework to integrate wildlife needs directly into sustainable forest planning.

This document assesses the status of experimental silviculture techniques established throughout coastal British Columbia to resolve a conflict between timber harvesting and the maintenance of grizzly bear foraging habitat. The primary approach involved using conifer cluster planting to intentionally reduce overall stocking density and create open canopy gaps necessary for the growth of critical food plants. The assessment of numerous field sites revealed that trial success was highly dependent on administrative factors, particularly securing an approved legal silviculture prescription and maintaining stable proponent staffing committed to a vegetation management plan. Consequently, the document prioritizes the best-performing large trials for long-term monitoring to measure the relationship between cluster spacing and forage production while recommending that failed or poorly stocked installations be abandoned or downgraded.

This webinar discusses operationalizing adaptive silviculture for climate change through a multi-site research network. The core purpose of the project is to provide forest managers with real-world, operational examples of integrating climate change adaptation principles into practice, specifically by fostering ecosystem resilience to uncertain futures. The research employs a consistent framework across various forest types, testing three primary adaptation strategies including resistance, resilience, and transition. The webinar details the work at the Minnesota pine site, highlighting local climate vulnerability to drought and the application of these three treatments: simple thinning for resistance, mixed-species restoration for resilience, and aggressive transition management using both native and novel, future-adapted species like Ponderosa pine.

This webinar focused on adapting timber management practices to environmental shifts. The webinar establishes the urgent need for adaptation by detailing regional climate projections, including rising temperatures and increased summer drought frequency, which pose significant threats to traditionally managed commercial species like Red Pine. The framework consisting of Resistance, Resilience, and Transition strategies is introduced, demonstrating how varying levels of silvicultural intervention, from thinning to mitigate drought to planting novel species via assisted migration, can reduce climate vulnerability. The central purpose of the discussion is to convince land managers that they can implement these science-backed silvicultural actions to sustain forest productivity and commercial value despite increasing ecological risks.

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.

This document details the Montane Alternative Silvicultural Systems study, which investigated various forest harvesting methods to find ecologically sound alternatives to traditional clearcutting practices in high-elevation coastal forests. The seven-year results demonstrated that the fastest volume growth for regenerating western hemlock and amabilis fir occurred in the treatments with the least retained overstory, such as the clearcut and patch cut systems. The study also emphasized that effective control of competing vegetation is vital for successful seedling performance, noting that herbicide use yielded significantly better growth than manual clearing. The data suggested that silvicultural systems retaining a significant canopy might reduce long-term tree growth due to increased competition and lower light levels.