Aerial Photo of the Jena Experiment (IMAGE) Technical University of Munich (TUM) Caption In the year 2002, plant communities based on a species pool of 60 species were sown to measure and compare flows in biogeochemical cycles and the interactions between organisms. Credit The Jena Experiment Usage Restrictions Free for use in reporting on TUM, with the copyright noted. 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.