Click on image to view larger version.
Fig. 4. Contribution of the different components and processes of a duckweed-covered system to the total N and P loss in shallow duckweed-covered batch systems. The terms Ndw and Pdw are uptake by duckweed; Nad and Pad are uptake by biofilm attached to duckweed; Naw and Paw are uptake by biofilm attached to the walls and/or sediment; and Nnd and Nnw are N loss due to nitrification–denitrification by biofilm attached to duckweed (nd) and walls (nw). Data from Körner and Vermaat (1998).
