Abstract:
This research aims to investigate the the effect of the dynamic of water physico-chemical changes to structural
community of phytoplantonic creatures in swampy flood plain. Water samples were taken in May to November
2015 in Bangkau swampy flood plain. Multivariate analysis non-metric multidimension scaling (NMDS) was
used for statistically analysis the relationship of biotic and water physico-chemical data. Oscillatoria,
Gonatozygon and Thallasiossira are three of twenty species, which they always present in each observations.
Abundance of phytoplanktonic ranges between 148 to 23,740 cell L-1. The presence of phytoplanktonic mainly
abundance in November (16 to 20 genera) and very rare in May. Identified 20 genera, there 6 genera have a
correlation to the dynamic of water quality parameters. Binuclearia and Cryptomonas have positiey correlated
to parameters of depth, SO4 and PO4. Both Binuclearia and Cryptomonas were present dominantly in May and
June. In the other hand, Oscillatoria (Cyanophyta), Sphaeroplea (Chlorophyta), Diatoma and Nitszchia
(Chrysophyta) shows negatively correlated to the dinamic water quality.
