nl, oost-zuid-holland, stuckenia pectinata, elodea nuttallii, potamogeton pusillus, spirodela polyrhiza, agrostis stolonifera, lemna trisulca, ceratophyllum demersum, myriophyllum spicatum, phragmites australis, ranunculus circinatus, lemna gibba, glyceria maxima, zannichellia palustris, glyceria fluitans, butomus umbellatus, sparganium erectum, lemna minor, persicaria amphibia, sagittaria sagittifolia, ranunculus sceleratus, eleocharis palustris, phalaris arundinacea, bolboschoenus maritimus, ranunculus repens, poa trivialis, elodea canadensis, alopecurus geniculatus, potamogeton crispus, alisma plantago-aquatica, potamogeton friesii, potamogeton trichoides, elymus repens, trifolium repens, hydrocharis morsus-ranae, lolium perenne, equisetum fluviatile, nymphoides peltata, myosotis scorpioides, potamogeton natans, poa annua, potamogeton perfoliatus, nuphar lutea, cirsium arvense, callitriche obtusangula, persicaria hydropiper, rorippa amphibia, argentina anserina, urtica dioica, berula erecta, polygonum aviculare