Landscape (IMAGE) University of Göttingen Caption Cattle pastures with isolated trees and living fences in central Panama. Once abandoned, these pastures are where tropical forests begin to regenerate and are initially dominated by fast-growing pioneer species (in the wet tropics). Credit Dylan Craven Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.