Annual Variation of Foliar Nitrogen and Chlorophyll Contents in Mature Holm Oak Trees as a Basis for the Estimation of Canopy Nitrogen in a Mediterranean Wooded Grassland Ecosystem

Abstract

Spanish Ministry of Science and Innovation in the framework of the BIOSPEC Project (CGL2008-02301/CLI). Laboratory of the Ecology and Forest Genetic of CIFOR (INIA), that conducted the foliar analysis and colleagues from CCHS-CSIC, CEAM, University of Alcalá and University of Zaragoza that contributed to the field and laboratory worksPeer reviewe