02011naa a2200301 a 450000100080000000500110000800800410001910000230006024501140008326000090019752011570020665000220136365000220138565000090140765000270141670000160144370000200145970000230147970000170150270000150151970000230153470000210155770000200157870000160159870000190161470000130163377300630164620840342018-05-02       2018    bl uuuu     u00u1 u    #d1 aCOSTA, A. C. L. da  aStand dynamics modulate water cycling and mortality risk in droughted tropical forest.h[electronic resource]  c2018  aTranspiration from the Amazon rainforest generates an essential water source at a global and local scale. However, changes in rainforest function with climate change can disrupt this process, causing significant reductions in precipitation across Amazonia, and potentially at a global scale. We report the only study of forest transpiration following a long-term (&gt10 year) experimental drought treatment in Amazonian forest. After 15 years of receiving half the normal rainfall, droughtrelated tree mortality caused total forest transpiration to decrease by 30%. However, the surviving droughted trees maintained or increased transpiration because of reduced competition for water and increased light availability, which is consistent with increased growth rates. Consequently, the amount of water supplied as rainfall reaching the soil and directly recycled as transpiration increased to 100%. This value was 25% greater than for adjacent nondroughted forest. If these drought conditions were accompanied by a modest increase in temperature (e.g., 1.5°C), water demand would exceed supply, making the forest more prone to increased tree mortality.  aBalanço hídrico  aFloresta tropical  aSeca  aTranspiração vegetal1 aROWLAND, L.1 aOLIVEIRA, R. S.1 aOLIVEIRA, A. A. R.1 aBINKS, O. J.1 aSALMON, Y.1 aVASCONCELOS, S. S.1 aS. JUNIOR, J. A.1 aFERREIRA, L. V.1 aPOYATOS, R.1 aMENCUCCINI, M.1 aMEIR, P.  tGlobal Change Biologygv. 24, n. 1, p. 249-258, Jan. 2018.