Substrate Specific Zooperiphyton And Their Relationships With Water Quality Parameters In Dhanmondi Lake Dhaka, Bangladesh

Abstract

In the present investigation, zooperiphyton communities comprised protozoa, rotifera copepoda, cladocera, ostracoda, conchostraca, insect’s larvae, oligochaeta, nematoda and mollusca. The group of zooperiphyton on three substrates showed no significant differences (P>0.05). Rotifers and protozoans were the most dominant group of total zooperiphyton abundance among three substrates. The interrelationships between zooperiphyton groups and physicochemical features of water as well as among different groups of zooperiphyton revealed that abundance and growth of zooperiphyton on substrates are influenced by water quality parameters and each with others. The ranges of physicochemical features of water of Dhanmondi lake were suitable for zooperiphyton communities including aquatic biota and also play a significant role to settle zooperiphyton on three substrates. That can help in enhancing productivity of the lake as well as sustaining aesthetic value of aquatic system.
 Asiat. Soc. Bangladesh, Sci. 40(2): 283-294, December 2014

Physicochemical assessment of Dhanmondi lake water in Dhaka city, Bangladesh

“…Comparing the findings of this study with other studies on other lakes in the city (Table 3), we get a mixed-up scenario. The hardness of this lake is comparable to that of Dhanmondi Lake and is comparatively lower than other lakes [19]. Similar is the case with TDS [19,20].…”

“…The hardness of this lake is comparable to that of Dhanmondi Lake and is comparatively lower than other lakes [19]. Similar is the case with TDS [19,20]. However, the water contains far more suspended solids than other water bodies, as suggested by the high TSS, with a standard deviation of 100.837.…”