Resumen de Seasonal pattern og physiological state in a cork oak (Quercus suber L.) stand in Huelva (Spain)
María Arantzazu González Pérez, Javier Vázquez Piqué, Raúl Tapias Martín, Manuel Fernández Martínez
The seasonal pattern of the physiological state of Quercus suber is determined by different ecological factors, and it affects to the growth of the species. The main objective of this study is to know the seasonal pattern of water potential, photosynthesis and fluorescence in four Quercus suber L. trees and to relate these values with ecological factors during two years.
In this time there were three critical periods, the first one the end of the dry period where the water potential descends to values less than -3MPa and the photosynthesis to 0.781 umol CO2 m2s1. The second critical period is located in period of change of the leaf, between the months of March and May. The third critical period occurred due to the freezes and drought of the year 2005, that produced strong damages in the PSII.
