Changing Sensitivity of Diverse Tropical Biomes to Precipitation Consistent with the Expected Carbon Dioxide Fertilization Effect

Abstract Global environmental changes have implications for the terrestrial ecosystem functioning, but disentangling individual effects remains elusive. The impact of vegetation responses to increasing atmospheric CO 2 concentrations is particularly poorly understood. As the atmospheric CO 2 concentration increases, the CO 2 acts as a fertilizer for plant growth. An increase in atmospheric CO 2 reduces the amount of water needed to produce an …