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Monitoring the Diatom bloom of <i>Leptocylindrus danicus</i> (Cleve 1889, Bacillariophyceae) in the coastal waters of South Andaman Island

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Title Monitoring the Diatom bloom of Leptocylindrus danicus (Cleve 1889, Bacillariophyceae) in the coastal waters of South Andaman Island
 
Creator Karthik, R
Padmavati, G.
Elangovan, S. Sai
Sachithanandam, V.
 
Subject Phytoplankton
Leptocylindrus danicus
Bloom
Nutrient
Eutrophication
South Andaman Island
 
Description 958-965
Hydrographical parameters were studied and nutrients such as nitrate, nitrite, phosphate and silicate were measured. Temperature ranged from (24.5-27ºC), Salinity ranged from (19-25 psu). Nutrients such as nitrite varied between 0.23-1.009 µmol. l-1, nitrate (0.63-4.71 µmol. l-1), phosphate (0.02-0.23 µmol. l-1) and silicate concentrations remained much higher and exhibited between the ranges of 4.07-10.37 µmol. l-1. Biomass expressed in terms of chlorophyll a was high, ranged from 0.09-0.267µg. l-1. It was found out that an increase in the nutrient content has initiated the bloom. In the present investigation, following species of phytoplankton were found to be common; diatoms such as Bacteriastrum sp., Cerataulina sp., Chaetoceros sp., Corthron sp., Coscinodiscus sp., Guinardia sp., Odontella sp.,dinoflagellatessuch as Ceratium sp., Gonyaulax sp., Gymnodinium sp., Prorocentrum sp and Protoperidinium sp. An increase in rain fall (904.0 mm) during September 2012 due to south west monsoon which was also found to be major factor that contributed to the bloom.
 
Date 2017-05-08T09:01:43Z
2017-05-08T09:01:43Z
2017-05
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/41662
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.46(05) [May 2017]