A graphical representation of the fluxes of carbon occuring in the Ythan Estuary, Scotland. Each node represents either a living species (hexagon) or a nutrient pool (trapeze). Colored edges represent imports, exports and dissipations. Courtesy of Stefano Allesina, Dipartimento di Scienze Ambientali, Università di Parma.
The GDL source of the graph was automatically generated by SCORtoGDL, a tool which translates files in SCOR format (numeric description of carbon exchanges in ecosystems) into GDL.