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<span style="font-size:15.0pt;line-height: 115%;font-family:"Times New Roman";mso-fareast-font-family:Calibri;mso-bidi-font-family: "Times New Roman";mso-ansi-language:EN-US;mso-fareast-language:EN-US; mso-bidi-language:AR-SA" lang="EN-US">Dominance of <i style="mso-bidi-font-style:normal">Trichodesmium</i> and associated biological and physico-chemical parameters in coastal water of Port Blair, South Andaman Island</span>

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Title Dominance of Trichodesmium and associated biological and physico-chemical parameters in coastal water of Port Blair, South Andaman Island
 
Creator Sahu, Biraja Kumar
Begum, Mehmuna
Kumarasamy, P.
Vinithkumar, N. V.
Kirubagaran, R.
 
Subject Trichodesmium
Plankton
Physico-chemical
Port Blair
Andaman
 
Description 1739-1745
Dominance of the cyanobacteria Trichodesmium was observed in the plankton samples collected from the
coastal water of Port Blair during May, 2011. No discernible change in the
colour of the surface water was observed. However the cumulative samples
collected using plankton net were red in colour. The number of Trichodesmium filaments and colonies were
found increasing towards the open sea region. Two species of cyanobacteria viz.
Trichodesmium thiebautii and Trichodesmium erythraeum were
identified. The number of filaments of T.
thiebautii were 10 to 15 times more than that of T. erythraeum. The inorganic phosphate and ammonia
concentrations were higher during the time of Trichodesmium dominance. The diatom Navicula membranaceae was the second dominating species followed by
Nitzschia seriata, N. closterium and Leptocylindrus danicus. In case of zooplankton,
the harpacticoid copepods such as Macrosetella
spp., Microsetella spp. and cyclopoid
copepods like Copilia spp., Sapphirina
spp. were found abundant. Reason for the Trichodesmium
dominance in the nearshore water of Port Blair could be due to its stable
coastal water conditions during summer.
 
Date 2016-06-27T11:06:08Z
2016-06-27T11:06:08Z
2014-09
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/34499
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(9) [September 2014]