Phytodiversity and water quality of a seminatural Madhabpur Lake in Bangladesh

Authors

  • Md. Ataul Gani Department of Botany, Jagannath University, Dhaka 1100, Bangladesh
  • Ashika Akhtar Department of Botany, University of Dhaka, Dhaka 1000, Bangladesh
  • Shafiul Azom Shafi Department of Botany, Govt. Haraganga College, Munshiganj 1500, Bangladesh
  • Md. Mehedi Hasan Department of Botany, Jagannath University, Dhaka 1100, Bangladesh
  • Farhana Islam Khan Department of Botany, Jagannath University, Dhaka 1100, Bangladesh
  • Shahrear Ahmad Department of Botany, Jagannath University, Dhaka 1100, Bangladesh
  • Z.N. Tahmida Begum Department of Botany, University of Dhaka, Dhaka 1000, Bangladesh
  • Md. Almujaddade Alfasane Department of Botany, University of Dhaka, Dhaka 1000, Bangladesh

DOI:

https://doi.org/10.3329/bjb.v53i1.72271

Keywords:

Phytoplankton, Aquatic macrophytes, Physicochemical factors, Diversity index, Water quality index and Madhabpur Lake

Abstract

Semi-natural lakes are important due to their natural diversity and various ecosystem services. Assessment of phytodiversity and water quality can add value in a limnological point of view. The present study was conductedon a semi-natural Madhabpur Lake inBangladesh to estimate diversity and water quality. Samplings were carried outin May 2016 and April 2017. In the lake, phytoplankton belonged to 6 distinct divisions. Chrysophyta and Chlorophyta were thedominantgroups in terms of density.A total of 70 phytoplankton taxa were recorded, of which Cryptomonaserosa var. reflexa, Cyclotellacomta, Ankistrodesmus spiralis, Monoraphidiumarcuatum, Cyclotellacomensis were dominant followed by  Ankistrodesmus falcatus, Trachelomonas compacta, Trachelomonas volvocina, Lepocinclis sp. and Mallomonas sp. The mean Chl a recordedin this lake was6.08  µg/l  and 8.48  µg/l in 2016 and 2017, respectively. Among the macrophytes, Potamogeton crispus, Monochoria hastata, Myriophyllum heterophyllum, Myriophyllum indicum, Nymphaea stellata, and Nymphoides cristatum were the dominant species in the lake. The calculated water quality index (WQI) showedall sampling stations were “Excellent” in water quality status except for two stations in 2016. WQI also showed that the values were less in 2017 than in 2016, whichmay be due to the addition of more parameters in the calculation. The limit ofphysicochemical parameters for drinking water wascompared with the WHO and ECR guidelines and showed no concern for drinking. So, the lake wateris considered as permissible for human consumption.

Bangladesh J. Bot. 53(1): 141-152, 2024 (March)

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Published

2024-03-31

How to Cite

Gani, M. A. ., Akhtar, A. ., Shafi, S. A. ., Hasan, M. M. ., Khan, F. I., Ahmad, S. ., Begum, Z. T. ., & Alfasane, M. A. . (2024). Phytodiversity and water quality of a seminatural Madhabpur Lake in Bangladesh . Bangladesh Journal of Botany, 53(1), 141–152. https://doi.org/10.3329/bjb.v53i1.72271

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