Eocene Lake and Forest Food Webs (image) Santa Fe Institute Caption Visualizations of the Messel lake and forest food webs: (left) lake food web, (right) forest food web. Spheres represent species and lines represent feeding links. Links that loop indicate cannibalism. The vertical axis corresponds to trophic level, with plants at the bottom level. Colors of nodes correspond to taxonomic affiliation of species. green = plants, algae, and diatoms; blue = bacteria, fungi, and detritus; yellow = invertebrates; orange = vertebrates. Credit Images created by J.A. Dunne. Food web produced with Network3D software written by R. J. Williams Usage Restrictions Credit provided 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.