Impacts of pH and salinity on community composition, growth and cell morphology of three freshwater phytoplankton

Authors

DOI:

https://doi.org/10.14719/pst.2021.8.3.1190

Keywords:

Phytoplankton growth, biomass , cell size, climate change, pH, salinity

Abstract

Impacts of climate change on phytoplankton species are very focusing issues nowadays. This research explored the probable impacts of different pH (pH 5.90 to 9.10) and salinity (0.60 to 3.0 ppt) concentrations on freshwater phytoplankton Chlorella vulgaris, Euglena granulata and Scenedesmus quadricauda. The initial community composition was 4:2:1 for the three taxa, which changed to 6:3:1, 6:2:1, 6:3.5:1 and 9:4:1 in pH 5.90, pH 9.10 and salinity 2.20 and 3.0 ppt respectively. E. granulata showed more tolerance in a wide range of pH (pH 5.90 to 8.30) based on growth rate studies. The other two species showed growth rates reduction gradually in changes with pH and salinity concentrations. Conspicuous changes of total biomass were seen in pH 5.90 and 9.10, and salinity 2.20 and 3.0 ppt conditions. Moreover, significant changes in cell morphology were found in pH 9.10 and 3.0 ppt salinity. The authors concluded that as group, the Chlorophytes were more susceptible than the diatom in these variable pH and salinity conditions, while S. quadricauda was comparatively more vulnerable as a single species.

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Author Biographies

Shaswati Chakraborty, Department of Botany, University of Barishal, Barishal-8254, Bangladesh

Master's research student. Published two articles.

Dipalok Karmaker, Department of Botany, University of Barishal, Barishal-8254, Bangladesh

Master's research student. Published three articles.

Md. Alimur Rahman, Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Barishal-8211, Bangladesh

Senior scientist in Bangladesh Agricultural Institute, and affiliated with many research activities.

Sukanto Chandra Bali, Department of Agroforestry, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Head of the Department of Botany at the University of Barishal.

Subroto K Das, Department of Botany, University of Barishal, Barishal-8254, Bangladesh

Faculty of Bangladesh Agricultural University and notable young researcher in Bangladesh.

Riyad Hossen, Department of Botany, University of Barishal, Barishal-8254, Bangladesh

Faculty of the Department of Botany at the University of Barishal, Principal investigator of Algae research group.

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Published

01-07-2021

How to Cite

1.
Chakraborty S, Karmaker D, Rahman MA, Bali SC, Das SK, Hossen R. Impacts of pH and salinity on community composition, growth and cell morphology of three freshwater phytoplankton. Plant Sci. Today [Internet]. 2021 Jul. 1 [cited 2024 Nov. 21];8(3):655–661. Available from: https://horizonepublishing.com/journals/index.php/PST/article/view/1190

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Research Articles