The current climate change scenario has intensified the problem of water availability in arid and semi-arid regions around the world. As such, the implications of these changes for tropical forests have been the subject of a great deal of research around the world. One of the main concerns is the reduction in water availability, which is the main factor influencing plant productivity in the tropics. This book provides a comprehensive analysis of the physiological and growth parameters of forest species under different water regimes. This information can be used to help select species adapted to conditions of low soil water availability.