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A first report on a bloom of the marine prymnesiophycean, Phaeocystis globosa from the Arabian Sea

DRS at CSIR-National Institute of Oceanography

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Title A first report on a bloom of the marine prymnesiophycean, Phaeocystis globosa from the Arabian Sea
 
Creator Madhupratap, M.
Sawant, S.S.
Gauns, M.
 
Subject algal blooms
new records
geographical distribution
biological development
chlorophylls
Phaeocystis globosa
 
Description A thick bloom of the marine prymnesiophycean, Phaeocystis globosa was observed in the central Arabian Sea during the summer monsoon period (July-August, 1996). The cells were mostly in colonial form, embedded in gelatinous matrics. The cell diameter was approximately 7 mu m and showed a distinct double feature form. The intensity of the bloom was as high as 3750 x 10 sup(6) cells m sup(-2) and the carbon content ranged between 33 and 550 mu g L sup(-1). Almost 90% of the phytoplankton population was composed of P. globosa in the bloom area. Other common forms were chain-forming diatoms like Rhizosolenia spp., Nitzschia spp. and Chaetoceros spp. The photosynthetic pigment chlorophyll a, however did not show any concomitant rise with the bloom intensity probably because the bloom was sampled during a senescent phase. The carbon chlorophyll ratio varied between 112 and 810. This is the first report on the occurrence of Phaeocystis from the Arabian Sea. It seems pertinent to ask whether this is a result of the genus being introduced and adapted to new environments due to human influence and whether it will influence food chains in the future
 
Date 2009-01-09T07:39:48Z
2009-01-09T07:39:48Z
2000
 
Type Journal Article
 
Identifier Oceanologica Acta, Vol.23; 83-90p.
http://drs.nio.org/drs/handle/2264/1616
 
Language en
 
Rights Copyright [2000]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Ifremer/ CNRS/ IRD/ Editions scientifiques et medicales Elsevier SAS. Tous droits reserves