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Impact of the tropical cyclonic storm ‘Aila’ on the water quality characteristics and mesozooplankton community structure of Sundarban mangrove wetland, India

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Title Impact of the tropical cyclonic storm ‘Aila’ on the water quality characteristics and mesozooplankton community structure of Sundarban mangrove wetland, India
 
Creator Bhattacharya, Bhaskar Deb
Bhattacharya, Asok Kumar
Rakshit, Dibyendu
Sarkar, Santosh Kumar
 
Subject Water quality
Mesozooplankton
Tropical cyclone
Sundarban wetland
India
 
Description 216-223
Present
study examine the changes in the occurrence and composition of mesozooplankton
(0.2 – 20 mm body size) in the context of water quality parameters at three
stations of Sundarban coastal region, West Bengal
due to the

odious
event of severe tropical cyclonic storm ‘Aila’ on 25th May, 2009. The Aila
incident not only caused stupendous changes in the physicochemical
characteristics of the water but also left direct impact on the mesozooplankton
biomass. A sharp increment in water turbidity, chemical oxygen demand (COD),
phytopigment chlorophyll b (chl b) and micronutrients (nitrate, phosphate and
silicate) were noticed during post-Aila period with a corresponding decrease of
water transparency and phytopigments chl a and chl c. Reduction of zooplankton
biomass, density and species diversity was also pronounced during post-Aila
period. An absolute dominance of two copepod species of diverse feeding guilds,
namely, Bestiolina similis (herbivore) and Oithona brevicornis (carnivore)
was the most interesting feature observed during post-Aila period. The
meroplanktons such as nauplius, zoea and ichthyoplanktons which constituted the
most dominant forms (~31 % of total mesozooplankton) during pre-Aila period,
were completely absent in post-Aila stage.
 
Date 2014-03-03T06:09:48Z
2014-03-03T06:09:48Z
2014-02
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/27257
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(2) [February 2014]