A5050421565- Forest Ecology and Biodiversity Studies
- Fire effects on ecosystems
- Ecology and Vegetation Dynamics Studies
- Forest Management and Policy
- Tree-ring climate responses
- Forest ecology and management
- Remote Sensing and LiDAR Applications
- Rangeland and Wildlife Management
- Species Distribution and Climate Change
- Plant Water Relations and Carbon Dynamics
- Lichen and fungal ecology
- Botany and Plant Ecology Studies
- Conservation, Biodiversity, and Resource Management
- Remote Sensing in Agriculture
- French Urban and Social Studies
- Landslides and related hazards
- Soil erosion and sediment transport
- Atmospheric and Environmental Gas Dynamics
- Bacteriophages and microbial interactions
- Geology and Paleoclimatology Research
- Forest Insect Ecology and Management
- Land Use and Ecosystem Services
- Forest Biomass Utilization and Management
- Plant and animal studies
Université du Québec à Chicoutimi
2021-2024
Université Laval
2014-2024
Ministère des Ressources naturelles et des Forêts
2014-2021
Université du Québec à Montréal
2016-2021
Université du Québec en Abitibi-Témiscamingue
2019
Ministry of Natural Resources and Wildlife
2010-2017
Ministry of Natural Resources and Forestry
2013
Université du Québec à Rimouski
2008-2009
Significance Black spruce is the dominant tree species in boreal North America and has shaped forest flammability, carbon storage, other landscape processes over last several thousand years. However, climate warming increases wildfire activity may be undermining its ability to maintain dominance, shifting forests toward alternative forested nonforested states. Using data from across America, we evaluate whether loss of black resilience already widespread. Resilience was most common outcome,...
Abstract Predicting future ecosystem dynamics depends critically on an improved understanding of how disturbances and climate change have driven long-term ecological changes in the past. Here we assembled a dataset >100,000 tree species lists from 19th century across broad region (>130,000km 2 ) temperate eastern Canada, as well recent forest inventories, to test effects anthropogenic disturbance, temperature moisture dynamics. We evaluate composition using four indices quantifying...
Satellite-derived spectral indices such as the relativized burn ratio (RBR) allow fire severity maps to be produced in a relatively straightforward manner across multiple fires and broad spatial extents. These often have strong relationships with field-based measurements of severity, thereby justifying their widespread use management science. However, satellite-derived been criticized because non-standardized units render them difficult interpret relative on-the-ground effects. In this...
The 2023 wildfire season in Québec set records due to extreme warm and dry conditions, burning 4.5 million hectares indicating persistent escalating impacts associated with climate change. This study reviews the unusual weather conditions that led fires, discussing their extensive on forest sector, fire management, boreal caribou habitats, particularly profound effects First Nation communities. wildfires significant declines productivity timber supply, overwhelming management resources,...
Abstract The 2023 wildfire season in Québec set records due to extreme warm and dry conditions, burning 4.5 million hectares indicating persistent escalating impacts associated with climate change. study reviews the unusual weather conditions that led fires, discussing their extensive on forest sector, fire management, boreal caribou habitats, particularly profound effects First Nation communities. wildfires significant declines productivity timber supply, overwhelming management resources,...
Logging-induced changes from preindustrial (1930) to current conditions (2002) were studied in a landscape covering 13 550 ha eastern Quebec. Age and types of forest cover compared between 1930 2002 maps. In addition, we relative species abundance living stems coarse woody debris study these at the stand scale. More than 90% was composed stands older 100 years. A balsam fir (Abies balsamea (L.) Mill.) white spruce (Picea glauca (Moench) Voss) dominated conifer (77% area) formed matrix...
Land use history has altered natural disturbance dynamics, causing widespread modifications of the earth's forests. The aim this study is to reconstruct a regional, spatially-explicit, fire and logging for large southern boreal forest landscape (6,050 km2) eastern Canada. We then examined long-term influence land history, fires, physiographical gradients on area's disturbances regimes, present-day age structure tree species composition. Spatially-explicit (1820–2005) (1900–2005) histories...
Forest plantations are recognized as a silvicultural tool for ensuring timber supply that meets public expectations regarding sustainable forest management. However, they also part of the scenario shows greatest potential artificialization natural forests. From firsthand perspective, intensive plantation silviculture objectives may appear antagonistic to those ecosystem Here we describe process through which defined and documented issues, then propose solutions allow integration into We...
Abstract Aims Our study aimed to: (1) document the preindustrial (1925) forest composition prior to extensive logging; (2) magnitude of changes from 1925 2005; and (3) identify relative influence logging natural disturbances as drivers present‐day composition. Location Boreal in central Quebec, eastern Canada. Methods We used a dense network georeferenced historical (~1925) plots ( n = 30 033) evaluated with using modern (1980s 2000s). reconstructed long‐term, spatially explicit history...
Abstract A better understanding of how disturbance impacts tree diversity at different scales is essential for our ability to conserve and manage forest ecosystems in the context global changes. Here we test land use‐related disturbances on since 19th century across a broad region (>150,000 km 2 ) northern temperate forests eastern Canada. We used large unique dataset early surveys conducted during (>130,000 species lists), along with modern inventories (>80,000 plots), analyse...
Abstract Forest anthropogenic and natural stand-replacing disturbances are increasing worldwide due to global change. Many uncertainties regarding the regeneration growth of these young forests remain within context changing climate. In this study, we investigate effects climate, tree species composition, other landscape-scale environmental variables upon boreal forest regrowth following clearcut logging in eastern Canada. Our main objective was predict future climate changes post-logging...
In Canada, as in other large forested countries of the world, managers and scientists alike question what can happen to forest biodiversity under long-term industrial management. Recent studies may help us understand how species react when habitat is lost past a certain threshold landscape. case population, “critical for habitat” does exist habitat, which defined by minimal proportion needed be preserved avoid drastic population declines or massive loss. this paper, two types thresholds are...
In the context of ecosystem management, present study aims to compare natural and present-day forested landscapes a large territory in Quebec (Canada). Using contemporary long-term fire cycles, each forest landscape is defined according variability its structure composition, compared landscape. This analysis was conducted address question whether human activities have moved these ecosystems outside range variability. The encompassed area 175 000 km2 divided into 14 landscapes. framework that...
Abstract Questions Do early land survey records of the ‘line description’ type allow accurate reconstructions pre‐settlement forest composition? Did surveyors record all tree taxa in stands encountered along surveyed lines? Were ranked according to their relative importance stands? What criteria did used rank Location Northern range limit northern hardwoods, L ower S t. awrence region, eastern Q uébec, C anada. Methods Validation 1695 taxon lists recorded by 19th century through comparison...
One-quarter of forest areas worldwide are managed for forestry purposes. Depending upon the type practice and intensity management, may alter forests to various degrees raise sustainability issues. To mitigate alteration natural by promote sustainability, ecosystem management has been implemented widely over past quarter century. A need remains development comprehensive operational assessment approaches validate its effectiveness. Naturalness could be used effectiveness since this concept...
Abstract Background Tree-related microhabitats (hereafter, “TreMs”) are key components of forest biodiversity but they still poorly known in North American hardwood forests. The spatial patterns living trees bearing TreMs “TreM-trees”) also remain to be determined. As logging practices can lead a loss TreM-trees and their associated biodiversity, it is essential identify the factors explaining TreM occurrence better integrate them into management. We therefore inventoried 4 0.5-ha survey...
Areas affected by forest fires are increasing worldwide, making salvage logging (i.e., harvesting fire-affected trees) an increasingly used practice to reduce the economic impacts of fire on forestry. However, can have strong ecological impacts, notably post-fire regeneration and biodiversity. Burn severity degree which impact vegetation soil) is also a central element that interacts with pre-fire characteristics salvages control dynamics In ecosystem-based management context, spatial...