
Cecile Vincent-BarbarouxUniversity of Orléans | UO · Laboratoire de Biologie des Lignieux et Grandes Cultures
Cecile Vincent-Barbaroux
PhD
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28
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Introduction
Skills and Expertise
Additional affiliations
January 2003 - August 2005
September 1997 - June 2002
Publications
Publications (28)
Ce travail a pour ambition de caractériser l’ampleur du phénomène de dépérissement des chênes dans la région Centre-Val de Loire à l’aide d’images satellites Sentinel-2 et d’un modèle de classification supervisée. Cette étude propose d’analyser en détail comment le modèle de classification utilise les séries temporelles d’indices Sentinel-2 pour dé...
This paper investigates tree species classification using Sentinel-2 multispectral satellite image time-series. Despite their critical importance for many applications, such maps are often unavailable, outdated, or inaccurate for large areas. The interest of using remote sensing time series to produce these maps has been highlighted in many studies...
In recent years, there has been a massive increase in forest dieback in temperate forests. This is largely due to climate change, which is associated with an increase in droughts and biotic and abiotic disturbances. A first step for the different stakeholders involved in forest management is to map the magnitude and temporal evolution of tree decli...
Forest decline and dieback are growing phenomena worldwide, resulting in severe, large‐scale degradation of the canopy. This can profoundly alter the provision of trophic resources and microhabitats for canopy‐dwelling arthropods.
In 2019, we assessed the effect of oak decline on the community of canopy‐dwelling Hymenoptera. We selected 21 oak stan...
This letter analyzes the contribution of the Sentinel-1 (S1) satellites, which provide C-band synthetic aperture radar (SAR) data, to the monitoring of forest dieback. Multispectral satellites (typically Landsat 8 or Sentinel-2, S2) have been found to be effective in detecting early signs of dieback, while little work has been done with SAR data de...
1. Forest decline and dieback are growing phenomena worldwide, resulting in severe, large-scale degradation of the canopy. This can profoundly alter the provision of trophic resources and microhabitats for canopy-dwelling arthropods.
2. In 2019, we assessed the effect of oak decline on the community of canopy-dwelling Hymenoptera. We selected 21 o...
Nitrogen is an important element that controls plant growth and yield. Recently we showed that protein farnesylation is involved in nitrate-driven root architecture organization in Arabidopsis. In this study, we aimed to deeper investigate the role of this post-translational maturation in plant responses to nitrogen, by studying the metabolic and p...
This paper studies the monitoring of oak dieback in forests of the Centre-Val de Loire region (France), where drought-induced dieback has become a major concern due to climate change. The main objective of the study is to evaluate the applicability of multispectral satellite time series for operational monitoring of forest dieback. Using in-situ da...
Trees in a state of decline exhibit a reduced foliage density and accumulate dead branches in their crowns. Consequently,
forest decline can markedly affect both the habitats and sources of food for canopy-dwelling insects. The decline-induced
increase in canopy openness may also modify the understory, shrub and ground layers, and have cascading ef...
Context:
Decline in a context of climate change is expected to induce considerable changes in forest structure, potentially affecting habitat opportunities and trophic resources for numerous species. Nonetheless, the consequences of decline on forest biodiversity have rarely been studied.
Aim:
We aimed to characterize the impact of oak decline...
Context
Decline in a context of climate change is expected to induce considerable changes in forest structure, potentially affecting habitat opportunities and trophic resources for numerous species. Nonetheless, the consequences of decline on forest biodiversity have rarely been studied.
Aim
We aimed to characterize the impact of oak decline on di...
Tree ring synthesis is a key process in wood production; however, little is known of the origin and fate of the carbon involved. We used natural 13C abundance to investigate the carbon-use process for the ring development in a temperate deciduous (Quercus petraea (Matt.) Liebl.) and a Mediterranean evergreen (Quercus ilex L.) oak. The sapwood carbo...
Key message Separating the internal (ontogenetic) and external (environmental) components of maritime pine development during controlled soil water deficit helps to highlight the plastic response. The adjusted measurements reveal significant differences between families for their plastic response for several physiology and growth traits. Context So...
Aphids can affect the growth or architecture of their host-trees, but rarely challenge their survival. Nonetheless, the woolly poplar aphid, Phloeomyzus passerinii, can kill healthy, mature poplars during outbreaks. Trees fail to open their buds and flush their leaves in the spring following a severe infestation. This insect develops on poplar trun...
Introduction
Because of its vigorous growth, poplar can play an important role for sustainable production of woody biomass to cover renewable energy needs. Hence, the selection of suitable genotypes has to be based on relevant traits, among which intrinsic water use efficiency (W
i, estimated through leaf carbon isotope discrimination, Δ) may be a...
The ongoing global change could be an additional threat to the establishment and the long-term survival of Populus nigra L., an emblematic European riparian species. With the general aim of gaining insights into the adaptive potential of this
species, we (i) quantified variations within and among three French P. nigra populations for key physiologi...
While there is currently intense effort to examine the (13)C signal of CO(2) evolved in the dark, less is known on the isotope composition of day-respired CO(2). This lack of knowledge stems from technical difficulties to measure the pure respiratory isotopic signal: day respiration is mixed up with photorespiration, and there is no obvious way to...
Genotypic variability for productivity, water-use efficiency and leaf traits in 33 genotypes selected from an F1 progeny of Populus deltoides Bartr. ex Marsh x Populus trichocarpa L. was explored under optimal and moderate water-deficit conditions. Saplings of the 33 genotypes were grown in a two-plot open field at INRA Orléans (France) and coppice...
A model simulating forest carbon and water fluxes was improved to simulate carbon allocation to roots, reserves and aboveground woody biomass and to estimate maximum leaf area index of the current year (LAImax). LAImax was calculated from the carbohydrates reserve, which integrates past ecological conditions. Allocation coefficients to the various...
• We examined the relationships between productivity, leaf traits and carbon isotope discrimination in bulk leaf matter (Δ1) and in phloem sap (Δs) from more than 5-year-old trees belonging to Populus deltoides × P. nigra and Populus trichocarpa × P. deltoides; trees were grown in alluvial and non alluvial sites in a commercial poplar plantation.
•...
Leaf mass per area (LMA) is a key leaf trait, which conditions the assessment of carbon balance and the adaptation of the species to their environment. LMA decreases exponentially within the canopy at a lower rate coefficient (kLMA) than the extinction coefficient (kPAR) of photosynthetically active radiation (PAR); consequently the canopy is not f...
We examined the relationships among productivity, water use efficiency (WUE) and drought tolerance in 29 genotypes of Populus x euramericana (Populus deltoides x Populus nigra), and investigated whether some leaf traits could be used as predictors for productivity, WUE and drought tolerance. At Orléans, France, drought was induced on one field plot...
A forest ecosystem model (CASTANEA) simulating the carbon balance (canopy photosynthesis, autotrophic and heterotrophic respirations, net ecosystem exchange, wood and root growth) and the water cycle (transpiration, soil evaporation, interception, drainage and soil water status) is tested with data from a young beech forest (Fagus sylvatica L.). Fo...
The (13)C natural abundance of CO(2) respired by plants has been used in the laboratory to examine the discrimination processes that occur during respiration. Currently, field measurements are being expanded to interpret the respiration delta(13)C signature measured at ecosystem and global levels. In this context, forests are particularly important...
A forest ecosystem model (CASTANEA) simulating the carbon balance (canopy photosynthesis, autotrophic and heterotrophic respirations, net ecosystem exchange, wood and root growth) and the water cycle (transpiration, soil evaporation, interception, drainage and soil water status) is tested with data from a young beech forest (Fagus sylvatica L.). Fo...
The exhaustive distribution of total carbohydrate reserves was investigated in oak and beech trees that were approx. 40 yr old and felled at two dates (October 1999 and June 2000) to estimate variations in reserve amounts at the tree level. The total nonstructural carbohydrate (TNC) content was highest in the twigs and coarse roots, reaching 10 g 1...
We tested the hypothesis that broad-leaved forest species with contrasting wood anatomy and hydraulic system (ring-porous versus diffuse-porous) also differ in distribution and seasonal dynamics of carbohydrate reserves in stem wood. Total nonstructural carbohydrate (TNC) reserves (starch and sugars) were measured enzymatically in the 10 youngest s...