88 resources found

This extension note focuses on the hydrological equivalent clearcut area as a tool for managing forests in British Columbia that have been affected by natural disturbances like mountain pine beetle infestations. It explores how different stand-level treatments, such as salvaging timber and replanting, can influence ECA over time compared to leaving stands unsalvaged. The author examines the contributions of various stand components-including surviving trees, dead snags, and regeneration-to ECA and compares the cumulative hydrological effects of different management strategies using ECA years. The document provides a decision framework to help forest managers consider hydrological values, especially when detailed assessments aren't possible, while also acknowledging other important ecological and economic factors in rehabilitation decisions.

This extension note outlines the successional pathways of various forest ecosystems in British Columbia and how these natural trajectories are influenced by natural disturbances, forest management practices, and projected climate change. The document describes typical post-disturbance development, the impacts of human interventions like harvesting, and potential future shifts due to altered temperature and precipitation regimes. The primary aim is to provide natural resource managers with a concise overview to inform strategies for building resistant and resilient forests in the face of ongoing environmental change.

This study investigates the effects of forest thinning on the understory vegetation in ponderosa pine and Douglas-fir forests of south-central British Columbia. The study addresses the problem of forest in-growth due to fire suppression, which reduces grazing land and increases wildfire risk. Through a four-year data collection period at two sites, the researchers examined how thinning, which reduces tree density, impacts understory species diversity and biomass production. The findings indicate that while thinning may not consistently increase species diversity in the short term, it does lead to a significant increase in total understory biomass within a few years, suggesting its potential as a tool for ecological restoration and enhancing forage for livestock.

This document examines the impacts of a changing climate on British Columbia's diverse natural ecosystems and proposes conservation-oriented adaptation actions. It highlights the regional variations in anticipated temperature and precipitation changes across the province and emphasizes the need to consider these specific ecological contexts when developing management strategies. Drawing upon a review of existing literature and initiatives like the Future Forests Ecosystem Initiative, the authors present examples of actions categorized under frameworks such as the 5Rs to help natural resource practitioners support the resilience and adaptation of species and ecosystems to future climate conditions. The document advocates for a proactive approach to natural resource management that integrates climate change considerations to ensure the long-term persistence of British Columbia's natural heritage.

This paper investigates the practicality of current wildfire fuel reduction goals in north-central British Columbia by examining mechanical raking treatments within the Burns Lake Community Forest. The study assessed if these treatments achieved the targeted fuel load of 1-5 tonnes per hectare in areas deemed high risk for wildfire. Their findings suggest that meeting these targets using current methods is challenging and potentially unsustainable, highlighting the need for a standardized fuel measurement methodology and more adaptable fuel load targets that consider ecological and operational factors. The research advocates for a more feasible and scientifically sound approach to wildfire risk reduction in the region, emphasizing the importance of consistent data collection for future comparisons and improved practices.

This guide delves into the fundamental ecological principles underpinning the successful application of the shelterwood silvicultural system in British Columbia. As the second part of a three-part series, this guide emphasizes that effectively using partial cutting methods like shelterwoods requires a strong understanding of stand dynamics, which involves how forest structure changes over time due to factors such as tree regeneration, growth, competition, and disturbance. The guide highlights the crucial role of regeneration ecology, exploring the necessary conditions for new trees to establish and thrive after silvicultural interventions. This resource aims to equip forest managers with the knowledge to manipulate forest stands predictably to achieve specific management objectives by considering the interplay of these ecological processes.

This paper addresses the increasing need for forestry practices to adapt to predicted climate changes. The authors explore assisted migration, defined as the purposeful movement of species to mimic natural range expansion, as a key strategy within forest management to ensure the resilience and productivity of future forests. Recognizing that many tree species cannot naturally migrate quickly enough to keep pace with climate shifts, the paper argues that proactive interventions like assisted migration are essential. The authors discuss different forms of assisted migration, weigh the associated risks and benefits, particularly within the context of British Columbia's forestry, and outline crucial policy and research needs to effectively implement this adaptation approach.

This paper challenges the traditional view that stand-initiating fires are the dominant disturbance regime in British Columbia's wet coastal temperate rainforests. Through a comprehensive literature review and analysis of empirical data, the authors argue that fine-scale gap dynamics, resulting from the death of individual or small groups of trees, is the primary process shaping these forests. They present four lines of evidence supporting this, including the prevalence of old-growth forests dominating the landscape, the infrequency of historical fires, and the biophysical conditions that limit fire spread. The paper emphasizes that a better understanding of these natural disturbance patterns, particularly gap dynamics, is crucial for developing sustainable forest management and conservation strategies in British Columbia.

This paper investigates the factors influencing wildfire burn severity across Canada. Using statistical models applied to environmental data from 1981 to 2020, the authors identify fuel aridity as the most significant driver of how severely forests burn. Their analysis reveals that northern regions and summer months are particularly prone to high-severity fires, and they found a concerning trend of increasingly favorable conditions for severe burning in recent decades, particularly in spring and autumn. The study concludes that changing climates are making Canadian forests more susceptible to intense fires, highlighting the need for improved fire management and preparedness strategies.

This report details a research project in the dry Douglas-fir forests of central British Columbia, initiated in 2001 at Farwell Canyon. The study investigated the effects of partial cutting on forest stand dynamics, specifically examining how different harvesting methods, coupled with pre-commercial thinning and prescribed burning, could achieve objectives like improved wildlife forage, enhanced residual tree growth, and increased fire resilience. The report presents data collected over 10-14 years following these treatments, analyzing changes in stand structure, tree growth, and regeneration patterns to assess the long-term outcomes of these forest management techniques in this specific ecosystem.

This paper details an experimental crown fire conducted in an Alberta, Canada, boreal black spruce forest to assess the effectiveness of recent crown thinning as a fuel treatment. Researchers ignited a 3. 6-hectare fire, observing its behavior in both untreated and thinned sections. The key finding was that while thinning led to a significant reduction in fire intensity, it did not reduce the fire's spread rate nor total fuel consumption. This suggests that in dense boreal black spruce with high surface fuel loads and low crown base heights, thinning alone may not prevent the rapid progression of crown fires, but it could potentially aid suppression efforts by reducing the intensity.

This paper investigates the differential ecological impacts of an extreme 2017 wildfire versus ongoing prescribed burns in Waterton Lakes National Park, AB. The core objective is to understand how reintroducing historical land-use processes, particularly through Traditional Ecological Knowledge, can enhance ecosystem resilience against modern stressors like climate change and invasive species. The study focuses on the Kenow wildfire's high-severity effects on a native-grass prairie compared to lower-severity prescribed burns, suggesting that while prescribed burning is beneficial, incorporating the full historical eco-cultural context, including the role of free-ranging bison and late-season Indigenous burning practices, is crucial for effective ecological restoration. The authors conclude that extreme disturbance is not necessarily catastrophic and that combining TEK with adaptive co-management can create landscapes more resilient to pervasive change.

This study focuses on aspen, a vital broadleaf tree, examining its distribution and health in north-central BC and the various threats it faces, including climate change, forest management practices, and ungulate grazing. It explores the ecological implications of potential aspen declines, specifically considering the relationship between aspen and beaver-created shallow water wetlands, offering recommendations for future research and management.

This guidance document outlines best management practices for fuel treatment within British Columbia's Interior-Wet Fire Weather Zone, a region characterized by its productive forests and diverse tree species like western cedar and hemlock. While typically experiencing higher precipitation and less frequent stand-replacing wildfires, drier subzones are prone to mixed-severity fire regimes. The guide emphasizes managing surface fuels, ladder fuels that allow fire to climb, and crown fuels to reduce the intensity and spread of wildfires, especially given the increased risk from climate change-induced drought and successful fire suppression efforts near communities. The document aims to provide professional guidance for mitigating wildfire threats through strategic fuel management and maintaining forest health.

The Sustainable Forest Management certificate is a flexible, career-focused program designed for forestry professionals aiming to advance their skills or pursue Registered Professional Forester designation. Delivered through three stackable micro-credentials, the program covers forest ecology, silviculture systems, harvesting practices, and forest health management. Learners gain practical, applied knowledge to assess forest disturbances and implement sustainable management strategies.

This course offers practical skills and knowledge to understand the effects of fires on natural environments through ecosystem decoding. The course also explores the impacts of, and the interactions between, fire management and forest management over the past 100 plus years. By the end of the course, participants will be able to prepare communities to respond to wildfire threats and create ecosystem resiliency through restoration methods - in fire and forest landscapes with multiple ecological objectives.

This paper explores how wildfires and beetle communities interact to influence Douglas-fir beetle outbreaks in British Columbia's forests. Traditionally, DFB populations are expected to surge after fires due to an abundance of weakened trees, but this study reveals a more complex dynamic. The presence of woodboring beetles, which also colonize fire-injured trees, can significantly constrain DFB population growth through interspecific competition. Specifically, when woodborers infest over 50% of trees in a stand, DFB reproduction falls below replacement levels, suggesting that these competitors can suppress potential DFB irruptions and ultimately influence forest resilience after disturbances.

This document investigates how partial harvesting strategies, designed to enhance mule deer habitat and allow timber extraction in British Columbia's dry Douglas-fir forests, impact complex interactions with natural disturbances like insect outbreaks and wildfires. The study, spanning 30 years, found that while short-term harvesting altered forest structure and reduced the immediate risk of crown fires and Douglas-fir beetle infestations, many of these structural and susceptibility changes reverted over the long term. The removal of harvesting residuals proved more significant in mitigating long-term disturbance risks, particularly for Douglas-fir beetles and intense surface fires, than the time elapsed since the treatment itself. The authors conclude that sustainable forest management integrating timber extraction and mule deer habitat conservation is achievable if partial harvesting occurs at intervals of 30 years or less and residuals are promptly cleared.

This paper investigates the effectiveness of various fuel treatments in mitigating wildfire behavior in British Columbia's seasonally dry forests, a region increasingly vulnerable to extreme fires. Through field measurements and fire behavior modeling, the study assessed how different combinations of thinning, pruning, and residue fuel management impact the potential for crown fires and tree mortality. Key findings suggest that high-intensity thinning is more effective at reducing both passive and active crown fire potential and tree mortality compared to low-intensity thinning, while pruning after thinning offered little additional benefit. The study also highlights that chipping or pile burning residue fuel can reduce crown fire risk, but cautions that chipping may lead to delayed tree mortality not captured by current models, indicating a need for further research on its long-term effects.

This document provides guidance on harvesting and thinning treatments within Wildland-Urban Interface areas, specifically focusing on reducing wildfire risk in British Columbia. It details a multi-step planning process for Community Wildfire Protection Plans, emphasizing the analysis of land features, existing values like public safety and wildlife habitat, and long-term visions for a fire-resilient forest dominated by Douglas-fir. The report also presents case studies illustrating various fuel reduction methods and their associated costs, alongside operational considerations and responses from professionals regarding logging systems, fuel management, and funding challenges. This document delves into fire behavior modeling to inform best practices for achieving target fuel loadings and canopy base heights, while also highlighting policy conflicts that hinder cost-efficient implementation of these crucial wildfire mitigation strategies.