Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2001.309.313KuttyAhmad Abas Ahmad Ismail Chay Siew Fong 3200143A study on species diversity of phytoplankton and its relationship to the lake
water quality was conducted at Lake Chini, Pahang. Sampling was conducted twice
i.e. 10th. July 1999 which is commonly dry period for tropical and 11th. December
1999, which is wet season. Quantitative and qualitative sampling was done using
the plankton net at the nine selected sampling stations. A total of 81 genus which
is consists of 135 species of Bacillariophyta, Cholorphyta, Cyanophyta, Chrysophyta,
Euglenophyta and Pyrrophyta division had been identified. Chlorophyta was quantitatively
and qualitatively the most dominants division, which was dominated by genus Staurastrum
spp, Cosmarium spp and Ankistrodesmus falcatus (Corda)
Ralfs. From the quantitative sampling, the density of phytoplankton had an average
of 2129 ind./ml, and one way ANOVA analysis ( = 0.05) showed that there is a significant
differences between sampling stations, but not significantly different between
two season. The Shannon diversity index of phytoplankton was detected ranging
between 2.050 to 2.905 and one way ANOVA (( = 0.05) analysis showed no significant
different of this index between season. The water quality of the Lake Chini was
within the natural concentration. Only nitrate was detected slightly higher than
the natural range ie ranging between 0.9 mg/l to 1.4 mg/l. The correlation test
(( = 0.05) showed that the organisms density and diversity index did not have
a significant linear correlation with the physical and chemical water quality.
Ankistrodesmus falcatus (Corda) Ralfs. found highly abundance in both sampling
and has a potential to be used as a biological indicator for the high level of
nitrate-nitrogen, however, further study need to be conducted for confirmation.]]>Furtado, J.I. and S. Mori,1982Haberyan, K.A., G.V. Umana, C. Collado and S.P. Horn,19953127585Robert, D.S., W.H. Robert and L.G. Everft,197410323331Round, F.E.,19732nd Edn.,Pages: 23Pages: 23Sulaiman, A.H., A. Salleh and A.H.H. Arshad,19911991