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Table 1
List of charophyte communities identified in the analysed lakes (n = 504) and lake-surveys (n = 739); syntaxa arranged according to the frequency of occurrence F(%) in descending order.
| Community (syntaxa) | Dominant species | n (lakes) | n (lake-years) | F(%) n = 739 |
|---|---|---|---|---|
| Nitellopsidetum obtusae (Sauer 1937) Dąmbska 1961 | Nitellopsis obtusa (Desvaux in Loiseleur-Deslongchamps) J. Groves 1919 | 216 | 303 | 41.0 |
| Charetum tomentosae Corillion 1957 | Chara tomentosa Linné 1753 | 152 | 198 | 26.9 |
| Charetum fragilis Fijałkowski 1960 | Chara globularis Thuillier 1799 (=Chara fragilis Desvaux in Loiseleur-Deslongchamps 1810) | 143 | 187 | 25.3 |
| Charetum delicatulae Doll 1989 ex Gąbka et Owsianny 2010 | Chara delicatula Agardh 1824 | 67 | 82 | 11.1 |
| Charetum asperae Corillion 1957 | Chara aspera Detharding ex Willdenow 1809 | 43 | 53 | 7.2 |
| Charetum contrariae Corillion 1957 | Chara contraria A. Braun ex Kützing 1845 | 40 | 46 | 6.2 |
| Charetum rudis Dąmbska 1966 | Chara rudis A. Braun in Leonhardi 1882 | 38 | 43 | 5.8 |
| Nitelletum flexilis Corillion 1957 | Nitella flexilis (Linné) Agardh 1824 | 32 | 37 | 5.0 |
| Charetum vulgaris Corillion 1957 | Chara vulgaris Linné 1753 | 22 | 27 | 3.7 |
| Charetum filiformis (Jeschke 1959) Krausch 1964 em. Dąmbska 1966 | Chara filiformis Hertzsch 1855(=Chara jubata A. Braun) | 23 | 25 | 3.4 |
| Charetum intermediae (Corillion 1957) Fijałkowski 1960 | Chara intermedia A. Braun 1836 (= Chara aculeolata Kützing in Reichenbach 1832) | 23 | 24 | 3.2 |
| Charetum hispidae Corillion 1957 | Chara hispida Linné 1753 | 12 | 13 | 1.8 |
| Nitelletum gracilis Corillion 1957 | Nitella gracilis (Smith) Agardh 1828 | 11 | 12 | 1.6 |
| Charetum polyacanthae Dąmbska 1966 ex Gąbka et Pełechaty 2003 | Chara polyacantha A. Braun in Braun, Rabenhorst et Stizenberger 1859 | 11 | 11 | 1.5 |
| Nitelletum mucronatae Tomaszewicz ex Hrivnák et al., 2001 | Nitella mucronata (A. Braun) Miquel 1840 | 6 | 7 | 0.9 |
| Nitelletum opacae Corillion 1957 | Nitella opaca (Bruzelius) Agardh 1824 | 6 | 7 | 0.9 |
| Lychnothamnetum barbati (Gołdyn 1984) Brzeg et Wojterska 2001 | Lychnothamnus barbatus (Meyen) Leonhardi 1863 | 3 | 4 | 0.5 |
| Charetum tenuispinae Dąmbska 1966 ex Tomaszewicz 1979 | Chara tenuispina A. Braun 1835 | 2 | 2 | 0.3 |
| Nitelletum syncarpae (Corillon 1957) Dąmbska 1966 | Nitella syncarpa (Thuillier) Chevalier 1827 | 1 | 1 | 0.1 |
| Charetum strigosae (Dąmbska 1966) | Chara strigosa A. Braun 1847 | 1 | 1 | 0.1 |
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