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Occurrence of Noctiluca scintillans bloom off Mangalore in the Arabian Sea

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Relation http://eprints.cmfri.org.in/10049/
 
Title Occurrence of Noctiluca scintillans bloom off Mangalore in the
Arabian Sea
 
Creator Sulochanan, Bindu
Dineshbabu, A P
Saravanan, Raju
Bhat, G S
Lavanya, R
 
Subject Algae
 
Description A bloom of the dinoflagellate Noctiluca scintillans (Macartney) with a cell density of 10.5 lakh cells l-1 was observed along
the Mangalore coast on 12th May 2011. The high wind velocity during the period caused further movement and dispersion
of the bloom and its presence was observed 250 km away from Mangalore at Karwar by 2nd June 2011. A comparison of the
nutrients in the water samples from January to May 2011 with the corresponding period during the previous year showed
that the levels of silicate (26.86 μg-at l-1), nitrate (59.47μg-at l-1) and total suspended solids (61mg l-1) were highest during
March 2011 in the bloom area. It was observed that the average wind velocity during January to May was 4.4 km h-1 (2010)
and 8.6 km h-1 (2011) respectively. During the first week of June, a total rainfall of 206 mm was recorded. This brought
down the salinity in the river as well as coastal water and the bloom completely disappeared. Significant correlation was
observed between rainfall and silicate in 2010 (p
 
Date 2014
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/10049/1/5_Bindu.pdf
Sulochanan, Bindu and Dineshbabu, A P and Saravanan, Raju and Bhat, G S and Lavanya, R (2014) Occurrence of Noctiluca scintillans bloom off Mangalore in the Arabian Sea. Indian Journal of Fisheries, 61 (1). pp. 42-48.