Stabilité de la flore probable
Indices de variables en comparaison
FLORE PROBABLE de SPIRODELA POLYRRHIZA (L 1-6
Comparaison des observations entre deux époques
En 2001 : présent dans 164 quadrats
En 2008 : présent dans 314 quadrats
Nb de cooccurrentes : 258
Nb de cooccurrentes : 319
Plantes écologiquement similaires
PDI                                  COOC
.28 SPIRODELA POLYRRHIZA (L 3-6 4882  168
.30 LEMNA TRISULCA L.       1-6 4881  273
.32 LEMNA MINOR L.          1-6 4879  491
.35 LEMNA MINOR L.          3-6 4878  324
.36 CERATOPHYLLUM DEMERSUM  1-6  516  229
.36 HYDROCHARIS MORSUS-RANA 1-6 4767  308
.40 AZOLLA FILICULOIDES LAM 1-6 5222  129
.41 HELODEA CANADENSIS RICH 1-6 4765  260
.42 LEMNA GIBBA L.          1-6 4877  103
.42 LEMNA TRISULCA L.       4-6 4880  162
.43 SAGITTARIA SAGITTIFOLIA 1-6 3988  267
.43 NUPHAR LUTEUM SM.       1-6 2086  273
.44 HYDROCHARIS MORSUS-RANA 4-6 4766  120
.45 CALLITRICHE OBTUSANGULA 1-6  147  211
.47 POTAMOGETON CRISPUS L.  1-6 5055  231
.47 MYRIOPHYLLUM VERTICILLA 1-6 1827  199
.47 MYRIOPHYLLUM SPICATUM L 1-6 1825  249
.47 SPARGANIUM SIMPLEX HUDS 1-6 5101  329
.48 POTAMOGETON PUSILLUS L. 1-6 5078  198
.48 RANUNCULUS CIRCINATUS S 1-6 2918  293
.49 POTAMOGETON LUCENS L.   1-6 5063  240
.49 CERATOPHYLLUM DEMERSUM  5-6  515  104
.49 POTAMOGETON PECTINATUS  1-6 5072  212
.50 HELODEA CANADENSIS RICH 4-6 4764  188
.50 CALLITRICHE OBTUSANGULA 3-6  146  167
.50 HIPPURIS VULGARIS L.    1-6 1830  274
.50 SALVINIA NATANS (L.) AL 1-6 5267   85
.51 HOTTONIA PALUSTRIS L.   1-6 2781  295
.51 RANUNCULUS CIRCINATUS S 3-6 2917  150
.51 SAGITTARIA SAGITTIFOLIA 3-6 3987  142
Plantes écologiquement similaires
PDI                                  COOC
.23 SPIRODELA POLYRRHIZA (L 3-6 7122  208
.29 CERATOPHYLLUM DEMERSUM  1-6  761  293
.30 LEMNA MINOR L.          1-6 7118  791
.30 AZOLLA FILICULOIDES LAM 1-6 7581  186
.31 LEMNA GIBBA L.          1-6 7116  165
.32 LEMNA TRISULCA L.       1-6 7121  318
.33 LEMNA MINOR L.          3-6 7117  561
.38 HELODEA CANADENSIS RICH 1-6 6959  492
.39 MYRIOPHYLLUM SPICATUM L 1-6 2705  353
.39 LEMNA TRISULCA L.       3-6 7120  233
.41 CALLITRICHE OBTUSANGULA 1-6  222  352
.41 POTAMOGETON PUSILLUS L. 1-6 7393  285
.41 NUPHAR LUTEUM SM.       1-6 3062  602
.42 SAGITTARIA SAGITTIFOLIA 1-6 5851  316
.42 POTAMOGETON CRISPUS L.  1-6 7368  298
.42 POTAMOGETON PECTINATUS  1-6 7387  281
.43 SPARGANIUM SIMPLEX HUDS 1-6 7423  436
.43 LEMNA TRISULCA L.       4-6 7119  197
.44 RANUNCULUS CIRCINATUS S 1-6 4298  292
.44 HYDROCHARIS MORSUS-RANA 1-6 6961  373
.44 HELODEA CANADENSIS RICH 4-6 6958  217
.45 POTAMOGETON LUCENS L.   1-6 7379  325
.45 POTAMOGETON FLUITANS RO 1-6 7372  194
.45 MYRIOPHYLLUM VERTICILLA 1-6 2707  413
.46 CERATOPHYLLUM DEMERSUM  5-6  760  114
.46 POTAMOGETON PERFOLIATUS 1-6 7389  174
.46 AZOLLA FILICULOIDES LAM 3-6 7580   93
.46 POTAMOGETON PECTINATUS  3-6 7386  206
.47 CALLITRICHE OBTUSANGULA 3-6  221  260
.47 SPARGANIUM SIMPLEX HUDS 3-6 7422  255