Search Results - "EPRON, DANIEL"

Drought impacts on tree phloem: from cell-level responses to ecological significance by Salmon, Yann, Dietrich, Lars, Sevanto, Sanna, Hölttä, Teemu, Dannoura, Masako, Epron, Daniel

“…Abstract On-going climate change is increasing the risk of drought stress across large areas worldwide. Such drought events decrease ecosystem productivity and…”
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Potential soil methane oxidation in naturally regenerated oak-dominated temperate deciduous forest stands responds to soil water status regardless of their age—an intact core incubation study by Bras, Nicolas, Plain, Caroline, Epron, Daniel

“…Key message Potential CH 4 oxidation in the top soil layer increased with decreasing soil water content in spring but was inhibited during severe summer…”
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Drought affects the fate of non-structural carbohydrates in hinoki cypress by Tsuji, Chiaki, Dannoura, Masako, Desalme, Dorine, Angeli, Nicolas, Takanashi, Satoru, Kominami, Yuji, Epron, Daniel

“…Abstract Tree species that close stomata early in response to drought are likely to suffer from an imbalance between limited carbohydrate supply due to reduced…”
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Mesophyll conductance to CO2, assessed from online TDL-AS records of (CO2)-C-13 discrimination, displays small but significant short-term responses to CO2 and irradiance in Eucalyptus seedlings by Douthe, Cyril C., Dreyer, Erwin, Epron, Daniel D., Warren, Charles R.

“…Mesophyll conductance (g(m)) is now recognized as an important limiting process for photosynthesis, as it results in a significant decrease of CO2 diffusion…”
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Estimation of phloem carbon translocation belowground at stand level in a hinoki cypress stand by Epron, Daniel, Dannoura, Masako, Ishida, Atsushi, Kosugi, Yoshiko

“…Abstract At stand level, carbon translocation in tree stems has to match canopy photosynthesis and carbohydrate requirements to sustain growth and the…”
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Impact of vegetation on the methane budget of a temperate forest by Plain, Caroline, Ndiaye, Fatou-Kiné, Bonnaud, Pascal, Ranger, Jacques, Epron, Daniel

“…• Upland forest soils are known to be the main biological sink for methane, but studies have shown that net methane uptake of a forest ecosystem can be reduced…”
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The impact of prolonged drought on phloem anatomy and phloem transport in young beech trees by Dannoura, Masako, Epron, Daniel, Desalme, Dorine, Massonnet, Catherine, Tsuji, Shoko, Plain, Caroline, Priault, Pierrick, Gérant, Dominique

“…Abstract Phloem failure has recently been recognized as one of the mechanisms causing tree mortality under drought, though direct evidence is still lacking. We…”
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Introduction to the invited issue on phloem function and dysfunction by Epron, Daniel, Dannoura, Masako, Hölttä, Teemu

“…Introduction to the invited issue on phloem function and dysfunction…”
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Seasonal variations drive short-term dynamics and partitioning of recently assimilated carbon in the foliage of adult beech and pine by Desalme, Dorine, Priault, Pierrick, Gérant, Dominique, Dannoura, Masako, Maillard, Pascale, Plain, Caroline, Epron, Daniel

“…13CO2 pulse-labelling experiments were performed in situ on adult beeches (Fagus sylvatica) and pines (Pinus pinaster) at different phenological stages to…”
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Transpiration alters the contribution of autotrophic and heterotrophic components of soil CO2 efflux by Grossiord, Charlotte, Mareschal, Louis, Epron, Daniel

“…An unbiased partitioning of autotrophic and heterotrophic components of soil CO2 efflux is important to estimate forest carbon budgets and soil carbon…”
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In situ assessment of the velocity of carbon transfer by tracing ¹³C in trunk CO₂ efflux after pulse labelling: variations among tree species and seasons by Dannoura, Masako, Maillard, Pascale, Fresneau, Chantal, Plain, Caroline, Berveiller, Daniel, Gerant, Dominique, Chipeaux, Christophe, Bosc, Alexandre, Ngao, Jérôme, Damesin, Claire, Loustau, Denis, Epron, Daniel

“…• Phloem is the main pathway for transferring photosynthates belowground. In situ¹³C pulse labelling of trees 8-10 m tall was conducted in the field on 10…”
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Spatial variability of soil CO₂ efflux linked to soil parameters and ecosystem characteristics in a temperate beech forest by Ngao, Jérôme, Epron, Daniel, Delpierre, Nicolas, Bréda, Nathalie, Granier, André, Longdoz, Bernard

“…The aim of this study was to determine the amplitude and the driving factors of the spatial variability in soil CO₂ efflux in a young European beech forest…”
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Estimating symbiotic N2 fixation in Robinia pseudoacacia by Marron, Nicolas, Gana, Cécilia, Gérant, Dominique, Maillard, Pascale, Priault, Pierrick, Epron, Daniel

“…Estimating symbiotic di‐nitrogen (N2) fixation is challenging, especially when working with woody N2 fixers in field trials. Fortunately, isotope methods based…”
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Short- and Long-term Influence of Litter Quality and Quantity on Simulated Heterotrophic Soil Respiration in a Lowland Tropical Forest by Bréchet, Laëtitia, Le Dantec, Valérie, Ponton, Stéphane, Goret, Jean-Yves, Sayer, Emma, Bonal, Damien, Freycon, Vincent, Roy, Jacques, Epron, Daniel

“…Heterotrophic soil respiration (SRH) alone can contribute up to 50% of total ecosystem respiration in tropical forests. Whereas the abiotic controls of SRH…”
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Diurnal variations in the thickness of the inner bark of tree trunks in relation to xylem water potential and phloem turgor by Epron, Daniel, Kamakura, Mai, Azuma, Wakana, Dannoura, Masako, Kosugi, Yoshiko

“…Why this research Matters The inner bark plays important roles in tree stems, including radial exchange of water with the xylem and translocation of…”
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Impact of severe dry season on net ecosystem exchange in the Neotropical rainforest of French Guiana by BONAL, DAMIEN, BOSC, ALEXANDRE, PONTON, STÉPHANE, GORET, JEAN-YVES, BURBAN, BENOÎT, GROSS, PATRICK, BONNEFOND, JEAN-MARC, ELBERS, JAN, LONGDOZ, BERNARD, EPRON, DANIEL, GUEHL, JEAN-MARC, GRANIER, ANDRÉ

“…The lack of information on the ways seasonal drought modifies the CO₂ exchange between Neotropical rainforest ecosystems and the atmosphere and the resulting…”
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Within-stand and seasonal variations of specific leaf area in a clonal Eucalyptus plantation in the Republic of Congo by Nouvellon, Yann, Laclau, Jean-Paul, Epron, Daniel, Kinana, Antoine, Mabiala, André, Roupsard, Olivier, Bonnefond, Jean-Marc, le Maire, Guerric, Marsden, Claire, Bontemps, Jean-Daniel, Saint-André, Laurent

“…Specific leaf area ( SLA; m 2 leaf kg −1 leaf) is a key ecophysiological parameter influencing leaf physiology, photosynthesis, and whole plant carbon gain…”
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Does spatial distribution of tree size account for spatial variation in soil respiration in a tropical forest? by Bréchet, Laëtitia, Ponton, Stéphane, Alméras, Tancrède, Bonal, Damien, Epron, Daniel

“…We explored the relationship between soil processes, estimated through soil respiration (Rsoil), and the spatial variation in forest structure, assessed…”
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Soil carbon dynamics following afforestation of a tropical savannah with Eucalyptus in Congo by Epron, Daniel, Marsden, Claire, Thongo M'Bou, Armel, Saint-André, Laurent, d'Annunzio, Rémi, Nouvellon, Yann

“…Soil organic matter is a key factor in the global carbon cycle, but the magnitude and the direction of the change in soil carbon after afforestation with…”
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Spatial variation of soil respiration across a topographic gradient in a tropical rain forest in French Guiana by Epron, Daniel, Bosc, Alexandre, Bonal, Damien, Freycon, Vincent

“…The objective of this study was to analyse the factors explaining spatial variation in soil respiration over topographic transects in a tropical rain forest of…”
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