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Occurrence of phytoplankton bloom and its effect on coastal water quality

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Title Occurrence of phytoplankton bloom and its effect on coastal water quality
 
Creator Satpathy, K K
Nair, K V K
 
Description 145-147
An intense bloom of phytoplankton dominated by Asterionella glacialis was observed during the second week of May 1993 in the coastal waters of Kalpakkam. During this period a marked reduction in dissolved oxygen (1.2 mg/l) in the surface water was noticed. A decrease in nitrate and silicate and increase in phosphate levels were also observed. Asterionella glacialis contributed 66% (5.45 x 10(10) cells/m(3)) of total diatoms. Chlorophyll-a value was as high as 22.7 mu g/l. Substantial decrease in total viable count (TVC) was observed (1000 cfu/ml) and this coincided with the Ic west DO value observed during the investigation. Suspended matter (SM) value during the bloom period was as high as 131.5 mg/l. Changes in physico-chemical characteristics of the coastal waters associated with the occurrence of bloom are discussed.
 
Date 2016-11-17T04:12:12Z
2016-11-17T04:12:12Z
1996-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/37106
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.25(2) [June 1996]