Tropical Forest in Borneo (image) University of Zurich Caption The Danum River in Sabah, Malaysia, Borneo. The colorful trees are currently in bloom. The blossoming of tropical trees is often triggered by periods of drought (dry spells, blossoming and recovery are closely intertwined in tropical systems). Credit Michael O'Brien/UZH Usage Restrictions None 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.