Search Results - "Ponton, Stephane"

Which oak provenances for the 22nd century in Western Europe? Dendroclimatology in common gardens by Bert, Didier, Lebourgeois, François, Ponton, Stéphane, Musch, Brigitte, Ducousso, Alexis

“…The current distribution area of the two sympatric oaks Quercus petraea and Q. robur covers most of temperate Western Europe. Depending on their geographic…”
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Do tree rings record changes in soil fertility? Results from a Quercus petraea fertilization trial by Durand, Maxime, Rose, Christophe, Dupouey, Jean-Luc, Legout, Arnaud, Ponton, Stéphane

“…Through the variations in their dimension, density, anatomy or isotopes composition, tree rings have provided invaluable proxies to evaluate past changes in…”
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Evidence for strong seasonality in the carbon storage and carbon use efficiency of an Amazonian forest by Rowland, Lucy, Hill, Timothy Charles, Stahl, Clement, Siebicke, Lukas, Burban, Benoit, Zaragoza‐Castells, Joana, Ponton, Stephane, Bonal, Damien, Meir, Patrick, Williams, Mathew

“…The relative contribution of gross primary production and ecosystem respiration to seasonal changes in the net carbon flux of tropical forests remains poorly…”
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Cutting tree rings into time slices: how intra‐annual dynamics of wood formation help decipher the space‐for‐time conversion by Pérez‐de‐Lis, Gonzalo, Rathgeber, Cyrille B. K., Fernández‐de‐Uña, Laura, Ponton, Stéphane

“…Summary Tree‐ring anatomy, microdensity and isotope records provide valuable intra‐annual information. However, extracting signals at that scale is challenged…”
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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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Provenance Differences in Water-Use Efficiency Among Sessile Oak Populations Grown in a Mesic Common Garden by Rabarijaona, Arivoara, Ponton, Stéphane, Bert, Didier, Ducousso, Alexis, Richard, Béatrice, Levillain, Joseph, Brendel, Oliver

“…Context As a widespread species, sessile oak ( Quercus petraea ) populations occupy a wide range of ecological conditions, with large gradients of soil water…”
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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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Do tree species characteristics influence soil respiration in tropical forests? A test based on 16 tree species planted in monospecific plots by Bréchet, Laëtitia, Ponton, Stéphane, Roy, Jacques, Freycon, Vincent, Coûteaux, Marie-Madeleine, Bonal, Damien, Epron, Daniel

“…The high spatial variability of soil respiration in tropical rainforests is well evaluated, but influences of biotic factors are not clearly understood. This…”
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Do changes in carbon allocation account for the growth response to potassium and sodium applications in tropical Eucalyptus plantations? by Epron, Daniel, Laclau, Jean-Paul, Almeida, Julio C R, Gonçalves, José Leonardo M, Ponton, Stephane, Sette, Jr, Carlos R, Delgado-Rojas, Juan S, Bouillet, Jean-Pierre, Nouvellon, Yann

“…Understanding the underlying mechanisms that account for the impact of potassium (K) fertilization and its replacement by sodium (Na) on tree growth is key to…”
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Soil fertilization transiently increases radial growth in sessile oaks but does not change their resilience to severe soil water deficit by Ponton, Stéphane, Bornot, Yoran, Bréda, Nathalie

“…•Fertilization significantly increased sessile oak radial growth.•Fertilization did not alter the tree ring/climate relationship.•Radial growth was resilient…”
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Root exclusion through trenching does not affect the isotopic composition of soil CO₂ efflux by Chemidlin Prévost-Bouré, Nicolas, Ngao, Jérome, Berveiller, Daniel, Bonal, Damien, Damesin, Claire, Dufrêne, Eric, Lata, Jean-Christophe, Le Dantec, Valérie, Longdoz, Bernard, Ponton, Stéphane, Soudani, Kamel, Epron, Daniel

“…Disentangling the autotrophic and heterotrophic components of soil CO₂ efflux is critical to understanding the role of soil system in terrestrial carbon (C)…”
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Comparison of ecosystem water-use efficiency among Douglas-fir forest, aspen forest and grassland using eddy covariance and carbon isotope techniques by Ponton, StÉphane, Flanagan, Lawrence B, Alstad, Karrin P, Johnson, Bruce G, Morgenstern, Kai, Kljun, Natascha, Black, T. Andrew, Barr, Alan G

“…Comparisons were made among Douglas-fir forest, aspen (broad leaf deciduous) forest and wheatgrass (C₃) grassland for ecosystem-level water-use efficiency…”
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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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Leaf functional response to increasing atmospheric CO2 concentrations over the last century in two northern Amazonian tree species: a historical delta 13C and delta 18O approach using herbarium samples by BONAL, DAMIEN, Ponton, Stephane, Le Thiec, Didier, Richard, Beatrice, NINGRE, NATHALIE, Herault, Bruno, OGEE, JEROME, Gonzalez, Sophie, PIGNAL, MARC, Sabatier, Daniel, GUEHL, JEAN-MARC

“…We assessed the extent of recent environmental changes on leaf morphological (stomatal density, stomatal surface, leaf mass per unit area) and physiological…”
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Differing nitrogen use strategies of two tropical rainforest late successional tree species in French Guiana: Evidence from super(15)N natural abundance and microbial activities by Schimann, Heidy, Ponton, Stephane, Haettenschwiler, Stephan, Ferry, Bruno, Lensi, Robert, Domenach, Anne-Marie, Roggy, Jean-Christophe

“…Previous studies in lowland tropical rainforests of French Guiana showed that, among non-N sub(2)-fixing trees, two groups of late successional species…”
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Tracing the origin of wood at the regional scale with dendrochemical markers: Elemental and strontium and neodymium isotopic composition by Štulc, Anna Imbert, Poszwa, Anne, Ponton, Stéphane, Dupouey, Jean-Luc, Bouchez, Julien, Beuret, Maximilien, Rigoussen, Dimitri, Paul, Thierry, Lemoine, Michel, Coubray, Sylvie, Girardclos, Olivier, Gauthier, Christophe, Bardin, Jérémie, Tu, Thanh Thuy Nguyen, Dufraisse, Alexa

“…The dendrochemical approach holds significant promise for determining the geographical origin of wood as a complementary tool to dendroprovenancing based on…”
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Leaf functional response to increasing atmospheric CO 2 concentrations over the last century in two northern Amazonian tree species: a historical δ 13 C and δ 18 O approach using herbarium samples by BONAL, DAMIEN, PONTON, STÉPHANE, LE THIEC, DIDIER, RICHARD, BÉATRICE, NINGRE, NATHALIE, HÉRAULT, BRUNO, OGÉE, JÉRÔME, GONZALEZ, SOPHIE, PIGNAL, MARC, SABATIER, DANIEL, GUEHL, JEAN‐MARC

“…We assessed the extent of recent environmental changes on leaf morphological (stomatal density, stomatal surface, leaf mass per unit area) and physiological…”
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Leaf functional response to increasing atmospheric CO(2) concentrations over the last century in two northern Amazonian tree species: a historical δ(13) C and δ(18) O approach using herbarium samples by Bonal, Damien, Ponton, Stéphane, Le Thiec, Didier, Richard, Béatrice, Ningre, Nathalie, Hérault, Bruno, Ogée, Jérôme, Gonzalez, Sophie, Pignal, Marc, Sabatier, Daniel, Guehl, Jean-Marc

“…We assessed the extent of recent environmental changes on leaf morphological (stomatal density, stomatal surface, leaf mass per unit area) and physiological…”
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Comparison of water-use efficiency of seedlings from two sympatric oak species: genotype x environment interactions by Ponton, Stéphane, Dupouey, Jean-Luc, Bréda, Nathalie, Dreyer, Erwin

“…Seedlings of two sympatric oak species, Quercus robur L. and Quercus petraea (Matt.) Liebl., were grown in common garden conditions to test for potential…”
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Leaf functional response to increasing atmospheric CO2 concentrations over the last century in two northern Amazonian tree species: a historical δ13C and δ18O approach using herbarium samples by BONAL, DAMIEN, PONTON, STÉPHANE, LE THIEC, DIDIER, RICHARD, BÉATRICE, NINGRE, NATHALIE, HÉRAULT, BRUNO, OGÉE, JÉRÔME, GONZALEZ, SOPHIE, PIGNAL, MARC, SABATIER, DANIEL, GUEHL, JEAN‐MARC

“…ABSTRACT We assessed the extent of recent environmental changes on leaf morphological (stomatal density, stomatal surface, leaf mass per unit area) and…”
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