Collecting Data (IMAGE) University of Arizona Caption Ray Turner, one of the researchers that established the plots in the 1960s, and Robert Webb, a lead researcher and co-author of the paper taking measurements of a saguaro. Susana Rodríguez-Buriticá is grateful of the commitment by the previous generations to ecological monitoring, especially at Tumamoc Hill, and the vision they had of its impact on ecological research. Credit Susana Rodríguez-Buriticá Usage Restrictions This visual may only be used in conjunction with reporting on or posting of this news release. Credit must be given as indicated. 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.