JEB logo

Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

About Journal
    Editorial Board
    Reviewer Panel
    RnD Division
    Subscription Info
    Contact Journal
Read Journal
    Current Issue
    Journal Archives
For Authors
    Authoring Guidelines
    Publication Process
    Track Paper Status

Search the Journal web-site through Google:

        Abstract - Issue May 2012, 33 (3)                                                                                                             Back

nstantaneous and historical temperature effects on a-pinene

Studies on phytoplankton characteristics in Ayyampattinam
coast, India


Author Details


C. Santhosh Kumar

Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai - 608502, India.

P. Perumal

(Corresponding author)

Department of Biotechnology, Periyar University, Salem – 636 011, India.

e-mail ID:


Publication Data

Paper received:

25  September 2010


Revised received:

09  June 2011


Re-revised received:

18  July 2011



21 September 2011



Physico-chemical variables in the marine environment are subjected to wide spatio­temporal variations. The various physico-chemical parameters viz: temperature, salinity, pH, dissolved oxygen and nutrients of the environment are the factors which mainly influence the production and successful propagation of planktonic life in the coastal biotopes. The ranges of values of surface water temperature (0°C), salinity (‰), pH and dissolved oxygen (ml l-1) were: 25.5 - 33.4; 23 - 35; 7.8 - 8.2; 3.6 - 5.2, respectively. The values (µg l-1) of nutrients were: nitrate 3.21 - 6.34, nitrite 0.74 - 0.896, phosphate 0.22 and 1.16, silicate 24.85 - 61.92 and ammonia 0.05 - 0.32. The recorded values of primary productivity (mgcm-3hr-1) ranged between 16 – 116 and the chlorophyll “a” varied from 3.74 – 8.52. A total number of 51 species of phytoplankton representing different classes viz: Bacillariophyceae (40); Dinophyceae (8); Chlorophyceae (1) and Cyanophyceae (2) was recorded. Among the four classes, Bacillariophyceae appeared to be the dominant group in respect of total species and cell numbers. The population density of phytoplankton was high during summer season and quite low during monsoon season.     


Key words

Physical parameters, Inorganic nutrients, Phytoplankton, Species diversity 


Copyright © 2012 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).