Violette Geissen, University of Córdoba (IMAGE) University of Córdoba Caption This is the researcher Violette Geissen from University of Wageningen in the study field. Credit University of Wageningen 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.