In this study the control mechanisms of evapotranspiration through canopy conductance, aerodynamic conductance and decoupling coefficient for aVochysia divergens Pohl (Vochysiaceae) forest located in the State of Mato Grosso in the Brazilian Pantanal are assessed. Over the course of the 2007 year, estimates of the following biophysical variables were made: evapotranspiration, canopy conductance, aerodynamic conductance and vapor pressure deficit. The decoupling coefficient was 0.58 and 0.51 for wet and dry season, respectively, indicating that the control offered by the net radiation on the evapotranspiration is predominant. The decoupling between the vegetation cover and atmosphere during the wet season was similar to studies in tropical forests. These results add an important dimension to our understanding on the characteristics of this internationally important wetland.
cambarazal; evapotranspiration; wetlands
