FRQ
   20 POTAMOGETON PECTINATUS  1-6
   16 POTAMOGETON FLUITANS RO 1-6
   16 MYRIOPHYLLUM SPICATUM L 1-6
   13 POTAMOGETON FLUITANS RO 4-6
   13 CERATOPHYLLUM DEMERSUM  1-6
   10 POTAMOGETON PECTINATUS  4-6

    6 CERATOPHYLLUM DEMERSUM  4-6
    4 POTAMOGETON OBTUSIFOLIU 1-6
    3 SPARGANIUM SIMPLEX HUDS 1-6
    3 POTAMOGETON CRISPUS L.  1-6
    3 SPIRODELA POLYRRHIZA (L 1-6
    3 RANUNCULUS CIRCINATUS S 1-6

    2 POTAMOGETON PUSILLUS L. 1-6
    2 SAGITTARIA SAGITTIFOLIA 1-6
    2 SAGITTARIA SAGITTIFOLIA 3-6
    2 RANUNCULUS CIRCINATUS S 3-6
    2 MYRIOPHYLLUM SPICATUM L 4-6
    1 POTAMOGETON PERFOLIATUS 1-6

    1 NAIAS MAJOR ALL.        1-6
    1 RANUNCULUS FLUITANS LAM 1-6
    1 NUPHAR LUTEUM SM.       1-6