Abondance faible
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Abond. moyenne
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Abondance forte
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0.25 SAGITTARIA SAGITTIFOLIA 3-6
0.36 SPARGANIUM SIMPLEX HUDS 1-6
0.38 HOTTONIA PALUSTRIS L. 1-6
0.38 HELODEA CANADENSIS RICH 1-6
0.39 SPARGANIUM SIMPLEX HUDS 3-6
0.41 NUPHAR LUTEUM SM. 1-6
0.42 POTAMOGETON NATANS L. 1-6
0.43 RANUNCULUS CIRCINATUS S 1-6
0.43 POTAMOGETON LUCENS L. 1-6
0.45 MYRIOPHYLLUM SPICATUM L 1-6
0.46 MYRIOPHYLLUM VERTICILLA 1-6
0.46 HIPPURIS VULGARIS L. 1-6
0.47 POTAMOGETON PUSILLUS L. 1-6
0.47 HYDROCHARIS MORSUS-RANA 1-6
0.48 HELODEA CANADENSIS RICH 4-6
0.48 POTAMOGETON CRISPUS L. 1-6
0.49 HOTTONIA PALUSTRIS L. 3-6
0.49 RANUNCULUS CIRCINATUS S 3-6
0.49 CERATOPHYLLUM DEMERSUM 1-6
0.49 LEMNA MINOR L. 1-6
0.50 CALLITRICHE OBTUSANGULA 1-6
0.50 POTAMOGETON PERFOLIATUS 1-6
0.50 HIPPURIS VULGARIS L. 3-6
0.50 LEMNA TRISULCA L. 1-6
0.50 POTAMOGETON PECTINATUS 1-6
0.51 NYMPHAEA ALBA L. 1-6
0.52 SPIRODELA POLYRRHIZA (L 1-6
0.52 POTAMOGETON FLUITANS RO 1-6
0.52 POTAMOGETON DENSUS L. 1-6
0.53 RANUNCULUS AQUATILIS L. 1-6
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