FRQ
   50 POTAMOGETON PECTINATUS  1-6
   48 MYRIOPHYLLUM SPICATUM L 1-6
   36 CERATOPHYLLUM DEMERSUM  1-6
   33 POTAMOGETON PERFOLIATUS 1-6
   27 POTAMOGETON FLUITANS RO 1-6
   18 POTAMOGETON PERFOLIATUS 3-6
   16 POTAMOGETON FLUITANS RO 4-6
   15 RANUNCULUS FLUITANS LAM 1-6
   15 NUPHAR LUTEUM SM.       1-6
   14 POTAMOGETON PECTINATUS  4-6

   13 SPARGANIUM SIMPLEX HUDS 1-6
   11 POTAMOGETON LUCENS L.   1-6
   11 POTAMOGETON CRISPUS L.  1-6
    9 RANUNCULUS CIRCINATUS S 1-6
    8 VALLISNERIA SPIRALIS L. 1-6
    8 SAGITTARIA SAGITTIFOLIA 1-6
    6 POTAMOGETON OBTUSIFOLIU 1-6
    6 NUPHAR LUTEUM SM.       4-6
    6 CERATOPHYLLUM DEMERSUM  4-6
    5 MYRIOPHYLLUM SPICATUM L 4-6

    4 POTAMOGETON PUSILLUS L. 1-6
    4 SPIRODELA POLYRRHIZA (L 1-6
    4 HELODEA CANADENSIS RICH 1-6
    4 RANUNCULUS CIRCINATUS S 3-6
    3 SPARGANIUM SIMPLEX HUDS 3-6
    3 NAIAS MAJOR ALL.        1-6
    3 BUTOMUS UMBELLATUS L.   1-6
    2 POTAMOGETON LUCENS L.   4-6
    2 SAGITTARIA SAGITTIFOLIA 3-6
    2 SIUM ERECTUM HUDSON     1-6

    1 ZANNICHELLIA PALUSTRIS  1-6
    1 POTAMOGETON MUCRONATUS  1-5
    1 POTAMOGETON MUCRONATUS  3-5
    1 NAIAS MINOR ALL.        1-6
    1 LEMNA MINOR L.          1-6
    1 LEMNA GIBBA L.          1-6
    1 HELODEA CANADENSIS RICH 4-6
    1 TRAPA NATANS L.         1-6
    1 RANUNCULUS FLUITANS LAM 3-6