Interpreting chlorophyll fluorescence signals: the effects of leaf age

Loren Albert, University of Arizona, Tucson, AZ, United States, Pilar Vergeli, Arizona State University, School of Earth and Space Exploration, Tempe, AZ, United States, Giordane Martins, National Institute for Amazon Research (INPA), Manaus, AM, Brazil, Scott R Saleska, University of Arizona, Department of Ecology & Evolutionary Biology, Tucson, United States and Travis E Huxman, University of California, Irvine, Ecology and Evolutionary Biology, Irvine, United States