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A Taxonomic Account on the Phytoplankton of a Pond Receiving Textile Industrial Effluents

Z.N. TAHMIDA BEGUM
Department of Botany, University of Dhaka, Dhaka 1000, Bangladesh

Abstract/ Executive Summary:

Phytoplankton from four stations of a large pond receiving effluents from two textile industries have been investigated. A total of 69 taxa were identified out of which 48 belonged to Chlorophyceae followed by 17 to Cyanophyceae. One species from each of Chrysophyceae, Xanthophyceae, Cryptophyceae and Dinophyceae were also recorded. Oscillatoria limnetica Lemm., Anabaena circinalis Rabenh. ex Born. et Flah., Nostoc commune Vaucher ex Born. et Flah. Ankistrodesmus falcatus var. mirabilis (West & West) Lemm. and Scendesmus spp. were found dominant in all the stations.

Keywords: Industrial effluents, Phytoplankton, Taxonomy

Location: Permanent pond near Deilla, Demra, Dhaka

Start Date: 00-00-1990

End Date: 00-00-1991

Program Area: Animal Health and Management

Commodity: Plankton

Objectives:

1. The present work has therefore been undertaken to study qualitative account of phytoplankton (excluding members of Bacillariophyceae and Euglenophyceae) from a pond receiving wastewater from two textile industries in Dhaka.

Methodology:

The investigation was carried out in a large permanent pond near Deilla, Demra, Dhaka during 1990-1991. The pond is an open drainage type having one inlet and is regularly charged with effluent wastewater released from the nearby textile and dyeing industries. Four stations or sampling points, namely S-1, S-2, S-3 and S-4, were selected in the pond for sampling. Samples were collected at fortnight intervals at a depth of about 25 cm below the surface of water. A rafter was used for this purpose. Air and water temperatures were recorded by a mercury (centigrade) thermometer. pH and redox potential (RP) were measured by CD-300 digital portable pH meter with the help of the electrode (PHMHBA- 220U, 24:760/6). Dissolved oxygen (DO) and free carbon dioxide were analyzed. The bicarbonate alkalinity was measured.

Source of Information: Bangladesh J. Plant Taxon. 15(2): 129-139, 2008 (December)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

A total of 69 phytoplankton taxa were recorded from the pond. The taxa which were found to be dominant were also previously reported to be dominant in different aquatic habitats in Bangladesh. The taxa belonged to the classes Cyanophyceae, Chlorophyceae, Chrysophyceae, Xanthophyceae, Cryptophyceae and Dinophyceae.

Knowledge Management: Journal