4_ClimGrass_setup_transpiration_measurement_Camille_Halais.jpg (IMAGE) University of Maryland Caption Measuring water stable isotopic signatures of vapor in transpiration chambers to aid inferring the source of grassland water use. Credit Camille Halais Usage Restrictions none License Original 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.