## 4 Results
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline \multirow{2}{*}{**CLASS**} & \multirow{2}{*}{**LILIOPSIDA**} & \multicolumn{4}{c}{**2007**} & \multicolumn{4}{c}{**2018**} \\ \cline{3-10}  & & \multicolumn{4}{c}{**Sectors**} & \multicolumn{4}{c}{**Sectors**} & \multicolumn{4}{c}{**Sectors**} & \multicolumn{1}{c}{**Group**} \\ \hline
**Families** & _Species_ & **PFR** & **R** & **RA** & **FR** & **PFR** & **R** & **RA** & **FR** \\ \hline Alismataceae & _Alisma plantago-aquatica_ & + & + & & + & + & & & EM \\ \hline \multirow{3}{*}{Araceae} & _Calla plantris_ & & & & + & & & EM \\  & _Lemma minor_ & & & & & + & + & + & PM \\ \hline Ceratophyllaceae & _Ceratophyllum denersum_ & + & + & + & + & + & + & + & SM \\ \hline \multirow{6}{*}{Characteraeae} & _Chara fragilis_ & & & & + & + & + & + & SM \\  & _Chara delicatula_ & + & + & & & & & SM \\  & _Chara globulars_ & + & & + & + & & & & SM \\  & _Nitella flexilis_ & & & + & & & & + & SM \\  & _Nitellopsis obtusea_ & & & & + & + & + & + & SM \\ \hline \multirow{6}{*}{Cyperaceae} & _Carex pseudocyperus_ & & & & + & & & EM \\  & _Carex vesicaria_ & & & & + & & & EM \\  & _Elockaris paltstris_ & & + & + & + & & + & + & EM \\  & _Schoenopletes lucstris_ & & & & + & + & & EM \\  & _Scirpus sylvaticus_ & & & & & + & + & EM \\ \hline \multirow{2}{*}{Holoragaceae} & _Myriophyllum_ & + & + & + & + & + & + & + & SM \\  & _alternifolium_ & & & & + & + & + & + & SM \\ \hline Hydrocharitaceae & _Elodea canadensis_ & + & & + & + & + & + & + & SM \\ \hline \multirow{2}{*}{Iridaceae} & _Iris pseudacorus_ & & & & + & & & EM \\ \hline Juncaceae & _Juncus articulatus_ & & + & + & & + & + & & EM \\ \hline Poaceae & _Plragmites australis_ & + & + & + & + & + & + & + & EM \\ \hline \multirow{3}{*}{Potamogetonaceae} & _Potamogeton crispus_ & & & & + & + & + & SM \\  & _Potamogeton lucens_ & + & & & + & + & & + & SM \\  & _Potamogeton praelongus_ & + & & & + & & & SM \\ \hline Typhaceae & _Typha angustifolia_ & + & + & + & + & + & + & EM \\ \hline \multirow{2}{*}{**CLASS**} & \multirow{2}{*}{**EQUUSTOPSIDA**} & \multicolumn{4}{c}{**2007**} & \multicolumn{4}{c}{**2018**} \\ \cline{3-10}  & & \multicolumn{4}{c}{**Sectors**} & \multicolumn{4}{c}{**Sectors**} & \multicolumn{4}{c}{**Group**} \\ \hline
**Families** & _Species_ & **PFR** & **R** & **RA** & **FR** & **PFR** & **R** & **RA** & **FR** \\ \hline Equisetaceae & _Equisetum fluviatile_ & & & & + & & & EM \\ \hline \multirow{2}{*}{**CLASS**} & \multirow{2}{*}{**POLIPODIOPSIDA**} & \multicolumn{4}{c}{**2007**} & \multicolumn{4}{c}{**2018**} \\ \cline{3-10}  & & \multicolumn{4}{c}{**Sectors**} & \multicolumn{4}{c}{**Sectors**} & \multicolumn{4}{c}{**Group**} \\ \hline
**Families** & _Species_ & **PFR** & **R** & **RA** & **FR** & **PFR** & **R** & **RA** & **FR** \\ \hline Thelyteridelaceae & _Theytteris palustris_ & + & & & & + & & EM \\ \hline \multirow{2}{*}{**CLASS**} & \multirow{2}{*}{**BRYOPSIDA**} & \multicolumn{4}{c}{**2007**} & \multicolumn{4}{c}{**2018**} \\ \cline{3-10}  & & \multicolumn{4}{c}{**Sectors**} & \multicolumn{4}{c}{**Sectors**} & \multicolumn{4}{c}{**Group**} \\ \hline
**Families** & _Species_ & **PFR** & **R** & **RA** & **FR** & **PFR** & **R** & **RA** & **FR** \\ \hline Fontinalaceae & _Fontinalis antipyretic_ & & & & & & + & SM \\ \hline
**TOTAL** & **37** & **19** & **10** & **9** & **9** & **26** & **16** & **14** & **14** & **4** \\ \hline \hline \end{tabular}
\end{table} 
Table 8: The species composition of macrophytes of the littoral of Lake Piaseczno in 2007 and 2018 (EM, emerging macrophytes; SM, submerged macrophytes; FM, floating macrophytes; PM, pleuston macrophytes). In 2007 and 2018, part of a species occurred in only one study sector: PFR (_Myosoti splustis_, _Settelaria galericulata_, _Lythrum salicaria_, _Nymplea alba_, _Rumex hydrolapathum_, _Lysymachia thyrsiflora_, _Potamogetom praelongus_ and _Thelypteris palustris_) and FR (_Nitella flexilis_).