Red tide of Noctiluca scintillans and its impact on the coastal water quality of the near-shore waters, off the Rushikulya River, Bay of Bengal

Noctiluca is a substantial bloom-forming marine dinoflagellate in the world ocean. Reports in the literature point out that the occurrence of Noctiluca bloom in coastal waters of the Indian subcontinent is not uncommon, but the causes of its occurrence are not well understood. Although several insta...

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Bibliographic Details
Published in:Current science (Bangalore) 2007-09, Vol.93 (5), p.616-618
Main Authors: Mohanty, A. K., Satpathy, K. K., Sahu, Gouri, Sasmal, S. K., Sahu, B. K., Panigrahy, R. C.
Format: Article
Language:English
Subjects:
Coastal water
Diatoms
Low temperature
Marine
Nitrates
Nitrites
Noctiluca
Noctiluca scintillans
Phosphates
Phytoplankton
Red tides
Salinity
SCIENTIFIC CORRESPONDENCE
Silicates
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Summary:Noctiluca is a substantial bloom-forming marine dinoflagellate in the world ocean. Reports in the literature point out that the occurrence of Noctiluca bloom in coastal waters of the Indian subcontinent is not uncommon, but the causes of its occurrence are not well understood. Although several instances of phytoplankton blooms in the coastal waters of the southern Orissa coast have been reported, there has been no report of 'red tide' formation by Noctiluca scintillans. During a regular study, a prominent discolouration of the surface water was noticed in coastal waters off the Rushikulya River mouth at lat. 1922'N and long. 8502'E on 5 April 2005. The bloom was dense and created red-coloured patches near the sea surface, covering a wide area of approximately 16 sq. km. The phytoplankton responsible for discolouration was identified as N. scintilans. In addition to the data collected on physico-chemical characteristics.
ISSN:0011-3891