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Title Temporal variations in phytoplankton assemblages at dol net fishing grounds of Maharashtra
 
Names Kumar, R.
Jaiswar, D.
Shukla, A.K.
Lekshmi, N.M.
Sreekanth, G.B.
Nakhwa, A.D.
Singh, V.V.
Date Issued 2018 (iso8601)
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.
Genre Article
Identifier Int. J. Curr. Microbiol. Appl. Sci. 7(6):465-480