J
Jean-Marc Ourcival
Researcher at University of Montpellier
Publications - 87
Citations - 12757
Jean-Marc Ourcival is an academic researcher from University of Montpellier. The author has contributed to research in topics: Eddy covariance & Ecosystem respiration. The author has an hindex of 39, co-authored 80 publications receiving 11094 citations. Previous affiliations of Jean-Marc Ourcival include Centre national de la recherche scientifique.
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Journal ArticleDOI
Europe-wide reduction in primary productivity caused by the heat and drought in 2003
Philippe Ciais,Markus Reichstein,Nicolas Viovy,A. Granier,Jérôme Ogée,Vincent Allard,M. Aubinet,Nina Buchmann,C. Bernhofer,Arnaud Carrara,Frédéric Chevallier,N. de Noblet,Andrew D. Friend,Pierre Friedlingstein,Thomas Grünwald,Bernard Heinesch,Petri Keronen,Alexander Knohl,Gerhard Krinner,Denis Loustau,Giovanni Manca,Giorgio Matteucci,Franco Miglietta,Jean-Marc Ourcival,Dario Papale,Kim Pilegaard,Serge Rambal,G. Seufert,Jean-François Soussana,María José Sanz,Ernst Detlef Schulze,Timo Vesala,Riccardo Valentini +32 more
TL;DR: An increase in future drought events could turn temperate ecosystems into carbon sources, contributing to positive carbon-climate feedbacks already anticipated in the tropics and at high latitudes.
Journal ArticleDOI
On the Separation of Net Ecosystem Exchange into Assimilation and Ecosystem Respiration: Review and Improved Algorithm
Markus Reichstein,Eva Falge,Dennis D. Baldocchi,Dario Papale,Marc Aubinet,Paul Berbigier,Christian Bernhofer,Nina Buchmann,Nina Buchmann,Tagir G. Gilmanov,A. Granier,Thomas Grünwald,Katka Havránková,Hannu Ilvesniemi,Dalibor Janouš,Alexander Knohl,Alexander Knohl,Tuomas Laurila,Annalea Lohila,Denis Loustau,Giorgio Matteucci,Tilden P. Meyers,Franco Miglietta,Jean-Marc Ourcival,Jukka Pumpanen,Serge Rambal,Eyal Rotenberg,María José Sanz,John Tenhunen,G. Seufert,Francesco Primo Vaccari,Timo Vesala,Dan Yakir,Riccardo Valentini +33 more
TL;DR: In this paper, the authors analyse the effect of extrapolation of night-time values of ecosystem respiration into the daytime; this is usually done with a temperature response function that is derived from long-term data sets.
Journal ArticleDOI
Modeling temporal and large‐scale spatial variability of soil respiration from soil water availability, temperature and vegetation productivity indices
Markus Reichstein,Ana Rey,Annette Freibauer,John Tenhunen,Riccardo Valentini,J. Banza,Pere Casals,Yufu Cheng,José M. Grünzweig,J. Irvine,Richard Joffre,Beverly E. Law,Denis Loustau,Franco Miglietta,Walter C. Oechel,Jean-Marc Ourcival,João Pereira,Alessandro Peressotti,Francesca Ponti,Ye Qi,Serge Rambal,Mark Rayment,Joan Romanyà,Federica Rossi,Vanessa Tedeschi,Giampiero Tirone,Ming Xu,Dan Yakir +27 more
TL;DR: In this paper, a statistical nonlinear regression model was developed to describe seasonal, interannual and spatial variability of soil respiration as affected by water availability, temperature, and site properties.
Journal ArticleDOI
Reduction Of Ecosystem Productivity And Respiration During The European Summer 2003 Climate Anomaly: A Joint Flux Tower, Remote Sensing And Modelling Analysis
Markus Reichstein,Markus Reichstein,Philippe Ciais,Dario Papale,Riccardo Valentini,Steven W. Running,Nicolas Viovy,Wolfgang Cramer,André Granier,Jérôme Ogée,Vincent Allard,M. Aubinet,Ch. Bernhofer,Nina Buchmann,Arnaud Carrara,Thomas Grünwald,Martin Heimann,Bernard Heinesch,Alexander Knohl,Alexander Knohl,Werner L. Kutsch,Denis Loustau,Giovanni Manca,Giorgio Matteucci,Franco Miglietta,Jean-Marc Ourcival,Kim Pilegaard,Jukka Pumpanen,Serge Rambal,Sibyll Schaphoff,Guenther Seufert,Jean-François Soussana,María José Sanz,Timo Vesala,Maosheng Zhao +34 more
TL;DR: In this paper, the effect of the 2003 heatwave on the European biosphere's productivity and carbon balance was analyzed using the EOS-MODIS sensor data and ecosystem modelling, showing that the drop in productivity was not primarily caused by high temperatures but rather by limitation of water.
Journal ArticleDOI
Severe drought effects on ecosystem CO2 and H2O fluxes at three Mediterranean evergreen sites: revision of current hypotheses?
Markus Reichstein,John Tenhunen,Olivier Roupsard,Jean-Marc Ourcival,Serge Rambal,Franco Miglietta,Alessandro Peressotti,Marco Pecchiari,Giampiero Tirone,Riccardo Valentini +9 more
TL;DR: In this paper, a top-down analysis of eddy covariance and sapflow data from three Mediterranean ecosystems was performed in conjunction with a mechanistic ecosystem gas exchange model to test current assumptions about drought effects on ecosystem respiration and canopy CO2/H2O exchange.