DESCRIZIONE
A method of producing zooplankton biomass rich in a target compound, the method comprising the steps of: (a) providing one or more species of microalgae and/or cyanobacteria; (b) optionally stimulating the microalgae and/or cyanobacteria; (c) contacting the microalgae and/or cyanobacteria with one or more species of zooplankton which feed thereon; and (d) collecting a portion of the zooplankton; wherein waste from the zooplankton is fed back to the microalgae and/or cyanobacteria