Gas exchange and leaf aging in an evergreen oak: causes and consequences for leaf carbon balance and canopy respiration

1Center of Functional and Evolutionary Ecology, CNRS 1919 Route de Mende, 34293, Montpellier Cedex 5, France; 2Department of Biology, University of New Mexico, MSC03 2020, Albuquerque, New Mexico 87131-0001, USA; 3Center for Biological Systems Analysis, University of Freiburg, Habsburgerstr. 49, 79104 Freiburg, Germany; 4Corresponding author (jesus.rodriguez-calcerrada@cefe.cnrs.fr/jesusrc1@yahoo.es)