A5077898402- Tree-ring climate responses
- Forest ecology and management
- Plant Water Relations and Carbon Dynamics
- Horticultural and Viticultural Research
- Forest Ecology and Biodiversity Studies
- Botany and Plant Ecology Studies
- African Botany and Ecology Studies
- Tree Root and Stability Studies
- Ecology and Vegetation Dynamics Studies
- French Urban and Social Studies
- Forest Management and Policy
- Agriculture and Rural Development Research
- Forest Insect Ecology and Management
- Handwritten Text Recognition Techniques
- Aeolian processes and effects
- Image Retrieval and Classification Techniques
- Forest Biomass Utilization and Management
- Fire effects on ecosystems
- Remote Sensing in Agriculture
- Remote Sensing and LiDAR Applications
- Wildlife Ecology and Conservation
- Advanced Image and Video Retrieval Techniques
- Species Distribution and Climate Change
- Lichen and fungal ecology
- Plant Physiology and Cultivation Studies
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2017-2025
AgroParisTech
2016-2025
Université de Lorraine
2017-2025
Silva
2018-2025
Ecologie et Ecophysiologie Forestières
1993-2017
Institut National de la Recherche Agronomique
2007-2014
Institut National des Sciences Appliquées de Lyon
2002-2008
Laboratoire d'Informatique en Images et Systèmes d'Information
2005-2008
University of Sfax
2006
Institut de la Vision
1999
Abstract Heatwaves exert disproportionately strong and sometimes irreversible impacts on forest ecosystems. These remain poorly understood at the tree species level across large spatial scales. Here, we investigate effects of record-breaking 2018 European heatwave growth water status using a collection high-temporal resolution dendrometer data from 21 53 sites. Relative to two preceding years, annual stem was not consistently reduced by but stems experienced twice temporary shrinkage due...
Recent studies have identified strong relationships between delayed recovery of tree growth after drought and mortality caused by subsequent droughts. These observations raise concerns about forest ecosystem services post-drought given the projected increase in frequency extremes. For quantifying impact extreme droughts on radial growth, we used a network tree-ring width data 1689 trees from 100 sites representing most distribution two tolerant, deciduous oak species (Quercus petraea Quercus...
Although cold hardiness is known to be a major determinant of tree species distribution, its dynamics and the factors that regulate it remain poorly understood. Variation in carbohydrate concentration, from dormancy induction until bud burst, were investigated populations two deciduous (Quercus robur L. Quercus pubescens Willd.) one evergreen ilex L.) European oak. Mean values January –56, –45 –27 °C for Q. robur, ilex, respectively. Soluble concentrations closely related instantaneous...
Questions: (1) How do extreme climatic events and climate variability influence radial growth of conifers (silver fir, Norway spruce, Scots pine)? (2) elevation soil water capacity (SWC) modulate sensitivity to climate? Location: The sampled conifer stands are in France, western lowland mountain forests, at elevations from 400 1700 m, an SWC 50 190 mm. Methods: We established stand chronologies for total ring width, earlywood latewood width the 33 studied (985 trees total). Responses were...
We investigated whether timing and rate of growth are related to the life strategies fitness three conifer species. Intra-annual dynamics wood formation, shoot elongation needle phenology were monitored over 3 years in five Norway spruces (Picea abies (L.) Karst.), Scots pines (Pinus sylvestris L.) silver firs (Abies alba Mill.) grown intermixed. For species, growing season (delimited by cambial activity onset cessation) lasted about 4 months, while whole process formation 5–6 months. Needle...
Abstract Aim Soil water is essential for the physiological processes of plant growth and fitness. Owing to difficulty assessing wide variations in soil reserves, distribution models usually estimate available plants through such climatic proxies as precipitation data ( P ) or balance minus potential evapotranspiration). We evaluated ability simple indices predict ecological niches forest tree species. Location F rance. Methods content deficits were computed mapped at a resolution 1 km ×...
Forests are undergoing increasing risks of drought-induced tree mortality. Species replacement patterns following mortality may have a significant impact on the global carbon cycle. Among major hardwoods, deciduous oaks (Quercus spp.) increasingly reported as replacing dying conifers across Northern Hemisphere. Yet, our knowledge growth responses these to drought is incomplete, especially regarding post-drought legacy effects. The objectives this study were determine occurrence, duration,...
Even-aged forest stands are competitive communities where competition for light gives advantages to tall individuals, thereby inducing a race height. These same individuals must however balance this advantage with height-related mechanical and hydraulic risks. phenomena may induce variations in height–diameter growth relationships, primary dependences on stand density tree social status as proxies pressure access light, availability of local environmental resources, including water. We aimed...
ABSTRACT With ongoing global warming, increasing water deficits promote physiological stress on forest ecosystems with negative impacts tree growth, vitality, and survival. How individual species will react to increased drought is therefore a key research question address for carbon accounting the development of climate change mitigation strategies. Recent tree‐ring studies have shown that trees at higher latitudes benefit from warmer temperatures, yet this likely highly species‐dependent...
The future performance of the widely abundant European beech (Fagus sylvatica L.) across its ecological amplitude is uncertain. Although considered drought-sensitive and thus negatively affected by drought events, scientific evidence indicating increasing vulnerability under climate change on a cross-regional scale remains elusive. While evaluating changes in sensitivity secondary growth offers promising avenue, studies from productive, closed-canopy forests suffer knowledge gaps, especially...