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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(6): 465-480
DOI: https://doi.org/10.20546/ijcmas.2018.706.052


Temporal Variations in Phytoplankton Assemblages at Dol Net Fishing Grounds of Major Tidal Creeks of Maharashtra, India
R. Ratheesh Kumar1*, A.P. Dineshbabu1, A.K. Jaiswar2, S.P. Shukla2, N. Manju Lekshmi3, G.B. Sreekanth4, A.D. Nakhawa1 and V.V. Singh1
1ICAR–Central Marine Fisheries Research Institute, Mumbai- 682 018, India
2ICAR - Central Institute of Fisheries Education, Mumbai - 400061, India
3ICAR - Central Institute of Fisheries Technology, Kochi - 682029, India
4ICAR - Central Coastal Agricultural Research Institute, Goa - 403402, India
*Corresponding author
Abstract:

Phytoplankton dynamics plays a vital role in determining the productivity of any coastal ecosystem. In this study, temporal variability in phytoplankton composition and diversity was assessed with respect to the physico-chemical parameters of water in major dol net fishing grounds of two spatially adjacent tidal creeks (Thane and Vasai) of Maharashtra. The phytoplankters identified belonged to 84 and 69 species in Thane and Vasai creeks, respectively. Numerical abundance of phytoplankton ranged from 8.7×104 cells L-1 to 4.3×105 cells L-1. Diatoms were the major group in both the creeks followed by dinoflagellates. Plankton density, diversity, evenness and richness were significantly higher in winter monsoon season. Phytoplankton density is positively correlated with phosphate, nitrate, nitrite, chlorophyll-a, diatoms and dinoflagellates, and negatively correlated with total suspended solids and silicates. Canonical correspondence analysis established that temperature, salinity and nutrients regulate the temporal patterns in phytoplankton composition. This study has provided fruitful insights on the diversity, abundance and temporal variations of phytoplankton assemblages under the influence of physico-chemical parameters of water in the tidal creeks of Maharashtra.


Keywords: Biodiversity indices, North eastern Arabian Sea, Phytoplankton, Physico-chemical parameters, Seasonal variation, Tidal creeks
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How to cite this article:

Ratheesh Kumar, R., A.P. Dineshbabu, A.K. Jaiswar, S.P. Shukla, N. Manju Lekshmi, G.B. Sreekanth, A.D. Nakhawa and Singh, V.V. 2018. Temporal Variations in Phytoplankton Assemblages at Dol Net Fishing Grounds of Major Tidal Creeks of Maharashtra, India.Int.J.Curr.Microbiol.App.Sci. 7(6): 465-480. doi: https://doi.org/10.20546/ijcmas.2018.706.052