Seasonal Shifts in Diatom Species Dominance in the Tidal Mangrove Estuary of Bangladesh

Diatom species dominance in the tidal mangrove estuary

Authors

  • Jahid Hasan Department of Aquatic Environment and Resource Management, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh
  • Dinesh Chandra Shaha Coastal and Marine Dynamics Laboratory, Department of Fisheries Management, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh
  • Mousumi Das Department of Aquaculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh
  • Sampa Rani kundu National Oceanographic and Maritime Institute (NOAMI), Dhaka-1205, Bangladesh
  • Salman Ahmed Coastal and Marine Dynamics Laboratory, Department of Fisheries Management, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh
  • Md Rashedul Haque Department of Marine Fisheries and Oceanography, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

DOI:

https://doi.org/10.3329/jbau.v22i2.74575

Keywords:

Estuary, Mangrove creeks, Phytoplankton community, Diatoms, Seasons

Abstract

Sustainable estuary management provides fishery resources, supports livelihoods and maintains estuarine food webs. However, these are highly dependent on hydrological factors and nutrients effects of the estuary itself. We studied seasonal phytoplankton quantity and composition of the Pasur River estuary in the Sundarbans mangrove forest, Bangladesh to understand the phytoplankton structure and identify potential indicators of environmental changes. Water and phytoplankton samples were collected at 11 different locations around the study region from January to December 2019 to assess spatial and temporal differences. Significant differences (p < 0.05) in the average salinity were observed between the dry and rainy seasons. Elevated phytoplankton (blue-green algae) concentrations were associated with decreased salinity while increased diatom abundance was linked to higher salinity. Phytoplankton succession from blue-green algae (wet season) to diatoms (dry season) occurred due to variations in physicochemical parameters and nutrient factors. Simultaneously, phytoplankton diversity and density were shown to change in response to habitat quality and seasonal variation. This study highlights the potential impacts of both human activities and natural factors on the population structure in these estuarine environments.

J Bangladesh Agril Univ 22(2):231-240, 2024

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Published

2024-06-30

How to Cite

Hasan, J. ., Shaha, D. C. ., Das, M. ., kundu, S. R. ., Ahmed, S. ., & Haque, M. R. . (2024). Seasonal Shifts in Diatom Species Dominance in the Tidal Mangrove Estuary of Bangladesh: Diatom species dominance in the tidal mangrove estuary. Journal of the Bangladesh Agricultural University, 22(2), 231–240. https://doi.org/10.3329/jbau.v22i2.74575

Issue

Vol. 22 No. 2 (2024)

Section

Fisheries

License

Copyright (c) 2024 Bangladesh Agricultural University Research System

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© 2003-2017 Bangladesh Agricultural University Research System.

Creative Commons Licence
Journal of the Bangladesh Agricultural University is licensed under a Creative Commons Attribution 4.0 International License.

JBAU is an Open Access journal. All articles are published under the CC-BY license which permits the use, distribution and reproduction in any medium, provided the original work is properly cited.