Beetles (IMAGE) The Hebrew University of Jerusalem Caption Beetles account for most biomass of macrodecomposers across most landscapes and play a crucial role in plant litter decomposition. Credit Nevo Sagi 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.