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Seasonal variation of phytoplankton community composition in coastal waters off Rushikulya Estuary, East Coast of India

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Title Seasonal variation of phytoplankton community composition in coastal waters off Rushikulya Estuary, East Coast of India
 
Creator Baliarsingh, S.K.
Srichandan, S.
Naik, S.
Sahu, K.C.
Lotliker, Aneesh A.
Kumar, T. Srinivasa
 
Subject Phytoplankton
Taxonomic composition
Diversity index
Correlation
Chlorophyll-a
Monsoon
 
Description 508-526
A total of 149 phytoplankton species were
identified during the study period wherein diatoms contributed 109,
dinoflagellates 28, green algae 6, cyanobacteria 4 and cocolithophores 2. A
striking feature of the study is the new record of 26 species from coastal
waters vicinity off Rushikulya estuary (coastal and estuarine waters extending
from Rushikulya to Bahuda) and 15 species from entire coastal waters of Odisha.
A contrast in phytoplankton species composition was noticed in all seasons.
Diatoms found as the dominant prevailing phytoplankton group in all seasons in
terms of number of species and abundance. Diatom species viz. Thalassiothix longissima, Skeletonema costatum,
Coscinodiscus eccentricus were ubiquitous off Rushikulya estuary throughout
the year. River and monsoon influence coastal waters in supplying
macronutrients for phytoplankton growth. Nitrogenous nutrients were found to be
controlling factor for phytoplankton growth. A linear relationship between
phytoplankton abundance and chlorophyll-a
was observed during three seasons. Despite
the highest species abundance during premonsoon, species diversity index
showed maximum for postmonsoon and monsoon periods due to preponderance of few
diatom species. Species were found to be more evenly distributed during monsoon
as indicated from the Pielou’s evenness (J’) index. Non-metric multidimensional
scaling (MDS) ordinations based on Bray-Curtis similarities indicated that
phytoplankton communities prevailed in March and April were the least similar
to those on other sampling occasions.
 
Date 2016-07-06T10:51:59Z
2016-07-06T10:51:59Z
2015-04
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/34729
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.44(04) [April 2015]