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VOL. 9, ISSUE 4 (2024)
Ecological status of River Kosi, Bihar (India) special references: With water quality and Phytoplankton
Authors
Braj Nandan Kumar, Sunil Kumar Choudhary, Rupa Dey, Shadia Rahman
Abstract
The present investigation was conducted to
find out the status of water quality and phytoplankton of Kosi River. Water
quality and algal species have been analyzed from 10 sampling sites. Seasonal
changes in the diversity of phytoplankton and its relationships to the water
quality in Kosi River were studied during pre and post monsoon 2018 -19. pH
values indicated the river water as neutral to moderately alkaline. The
variations in conductively, total dissolved solids, total hardness, chloride,
phosphate and nitrate were not significant in the river stretch investigated.
Hardness values suggest the river water as moderately hard. The turbidity
values increased apparently in whole stretch. COD is degraded in lower stretch
of the river water compared to upland stretch. Altogether 39 genera and 108
species of phytoplankton have been identified in present investigation from all
ten sampling station of Kosi River. Water quality index has been calculated by
Ramakrishnaiah et al., 2009. Nygaard’s index (Nygaard, 1949) [18],
Palmer’s algal pollution index (Palmer, 1969) [19] and Species
Diversity Index (Shannon & Wiener index, 1949) [27] have been
applied to know the pollution status.
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Pages:21-25
How to cite this article:
Braj Nandan Kumar, Sunil Kumar Choudhary, Rupa Dey, Shadia Rahman "Ecological status of River Kosi, Bihar (India) special references: With water quality and Phytoplankton". International Journal of Botany Studies, Vol 9, Issue 4, 2024, Pages 21-25
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