Researcher Cory Cleveland (IMAGE) University of Colorado at Boulder Caption Researcher Cory Cleveland measures soil respiration in Costa Rica's Golfo Dulce Forest, site of the CU-Boulder nutrient study. Credit Image courtesy CU-Boulder Usage Restrictions Image is in the public domain 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.