A5021908375- Plant Water Relations and Carbon Dynamics
- Tree-ring climate responses
- Forest ecology and management
- Ecology and Vegetation Dynamics Studies
- Remote Sensing in Agriculture
- Plant Physiology and Cultivation Studies
- Horticultural and Viticultural Research
- Species Distribution and Climate Change
- Seedling growth and survival studies
- Plant Molecular Biology Research
- Greenhouse Technology and Climate Control
- Plant Reproductive Biology
- Plant and animal studies
- Agriculture and Rural Development Research
- African Botany and Ecology Studies
- Sugarcane Cultivation and Processing
- Plant Diversity and Evolution
- Berry genetics and cultivation research
- Natural Products and Biological Research
- Cryospheric studies and observations
- Plant-Derived Bioactive Compounds
- Tree Root and Stability Studies
- Hydrology and Sediment Transport Processes
- Forest Ecology and Biodiversity Studies
- Botany and Plant Ecology Studies
Université du Québec en Abitibi-Témiscamingue
2022-2025
Université du Québec à Chicoutimi
2019-2024
Université du Québec en Outaouais
2021-2022
Université du Québec
2021
Abstract A reliable assessment of forest carbon sequestration depends on our understanding wood ecophysiology. Within a forest, trees exhibit different timings and rates growth during formation. However, their relationships with anatomical traits remain partially unresolved. This study evaluated the intra-annual individual variability in balsam fir [ Abies balsamea (L.) Mill.]. We collected microcores weekly from April to October 2018 27 individuals Quebec (Canada) prepared sections assess...
Secondary growth is a process related to the formation of new cells that increase in size and wall thickness during xylogenesis. Temporal dynamics wood influence cell traits, turn affecting patterns across tree ring. We verified hypothesis diameter are positively correlated with duration their differentiation phases.Histological sections were produced by microcores assess periods black spruce [Picea mariana (Mill.) B.S.P.]. Samples collected weekly between 2002 2016 from total 50 trees five...
New insights into the intra-annual dynamics of tree-ring formation can improve our understanding tree-growth response to environmental conditions at high-resolution time scales. Obtaining this information requires, however, a weekly monitoring wood formation, sampling that is extremely time-intensive and scarcely feasible over vast areas. Estimating timing cambial xylem differentiation by modeling thus represents an interesting alternative for obtaining important other means. Temporal...
Abstract As major terrestrial carbon sinks, forests play an important role in mitigating climate change. The relationship between the seasonal uptake of and its allocation to woody biomass remains poorly understood, leaving a significant gap our capacity predict sequestration by forests. Here, we compare intra-annual dynamics fluxes wood formation across Northern hemisphere, from assimilation non-structural compounds their incorporation tissues. We show temporally coupled peaks (GPP) cell...
Abstract Under climate change, the increasing occurrence of late frost combined with advancing spring phenology can increase risk damage in trees. In this study, we tested link between intra‐specific variability bud and exposure damages. We analysed effects 2021 event a black spruce ( Picea mariana (Mill.) BSP) common garden Québec, Canada. hypothesised that timing budbreak drives vulnerable tissues explains differences damage. Budbreak was monitored from 2015 to 371 trees five provenances...
Understanding how plant allometry, architecture and phenology contribute to fruit production can identify those traits that maximize yield. In this study, we compared these variables yield for two shrub species, Vaccinium angustifolium myrtilloides, test the hypothesis is linked plants' allometric traits, which are predictors of production.We measured leaf flower above-ground biomass both species in a commercial wild lowbush blueberry field (Quebec, Canada) over 2-year crop cycle; 1 year...
Summary Wood density is the product of carbon allocation for structural growth and reflects trade‐off between mechanical support water conductivity. We tested a conceptual framework based on assumption that micro‐density depends direct indirect relationships with endogenous exogenous factors. The dynamics wood formation, including timings rates cell division, enlargement, secondary wall deposition, were assessed from microcores collected weekly 2002 2016 five black spruce stands located...
Abstract Aim In boreal ecosystems, phenological events display seasonal patterns. These patterns allow for the development of tissues during short time window available growth in cold climates. Primary and secondary growth, two expensive processes plants, are supposedly modulated to optimize allocation carbon bud woody tissues. We aimed assess phenology primary meristems, testing their relationship over closed black spruce stands commercially exploited forest region Quebec, Canada. Location...
Extreme climatic events that are expected under global warming expose forest ecosystems to drought stress, which may affect the growth and productivity. We assessed intra-annual responses of trees soil water content in species belonging different functional groups tree-ring porosity. pose hypothesis with contrasting carbon allocation strategies, emerge from relationships between wood traits canopy architecture, display divergent drought. selected two diffuse-porous (Acer saccharum Betula...
Bud and leaf development are important phenological events help in defining the growing period of trees. Canopy greenness derived from PhenoCam has been used to investigate phenology. Questions remain on how much continuous records canopy represent bud developmental phases, boundaries related In this study, we compared phenology black spruce [Picea mariana (Mill.) B.S.P] during 2015, 2017 2018 with greenness, represented by Green Chromatic Coordinate (GCC), images a boreal stand Quebec,...
Abstract Auxin is involved in various developmental processes of plants, including cell division cambium and xylem differentiation. However, most studies linking auxin production are performed environments with a strong seasonality (i.e., temperate boreal climates). The temporal dynamics cambial activity subtropical trees remain basically unknown. In this study, we sampled four microcores weekly three individuals Chinese red pine (Pinus massoniana Lamb.) from February to December 2015–16...
Abstract Key message The intra-annual variability in stem size of marginal beech population from south-eastern distribution range Poland is higher within than between populations. One the key issues tree species their ability to track environmental changes. European ( Fagus sylvatica L.) a highly sensitive extreme climatic events, because its high phenotypic plasticity. In this study, we aim determine and Marginal populations growing under uniform conditions provenance trial offer unique...
Xylem is a complex tissue connecting the organs of plants and it performs multiple functions, including water transport, mechanical support, storage. Because interaction between structure function, xylem anatomy can provide useful information about its role in plant strategies. However, knowledge how anatomical traits change across species functional groups still limited. Here, we tested different (stem roots) leaf habits (deciduous, semi-deciduous, evergreen) on variation 15 woody from...
Upscaling carbon allocation requires knowledge of the variability at scales which data are collected and applied. Trees exhibit different growth rates timings wood formation. However, factors explaining these differences remain undetermined, making samplings estimations dynamics a complicated task, habitually based on technical rather than statistical reasons. This study explored in xylem phenology among 159 balsam firs [Abies balsamea (L.) Mill.].Wood microcores were weekly from April to...
Abstract In temperate and boreal ecosystems, trees undergo dormancy to avoid cold temperatures during the unfavorable season. This phase includes changes in frost hardiness, which is minimal growing season reaches its maximum winter. Quantifying hardiness important assess risk shifts of species distribution under a changing climate. We investigate effect local conditions intra-specific variation on sugar maple (Acer saccharum Marsh.). Seedlings belonging seven provenances from northern area...
Climate change is expected to outpace the rate at which populations of forest trees can migrate. Hence, in forestry there growing interest intervention strategies such as assisted migration mitigate climate impacts. However, until now primary focus when evaluating candidates for has been mean or maximum performance. We explore phenotypic plasticity a potentially new avenue help maintain viability species and face change. Capitalizing on large, multi-site international provenance trials four...
Global changes affect the growing conditions of terrestrial ecosystems, causing a mismatch between plant phenology and local climates in Northern regions. Due to their long lifespan irregular regeneration periods, trees cannot respond quickly enough climate variability through long-term genetic adaptation. In this study, we explored phenological plasticity variation among populations bud burst sugar maple ( Acer saccharum Marsh.) seedlings from 30 Canadian provenances with contrasting...
Bud phenology is a sensitive indicator of climate change. Therefore, it's important to understand the direct relationship canopy greenness and bud phenological events at higher spatial temporal resolutions. Recently, phenocam based near surface remote sensing methods has been extensively used for time series analysis measure leaf transition dates. Thus, this study compared spring autumnal phases black spruce[Picea mariana(Mill.) B.S.P] derived from field observations time-series data...