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dc.contributor.authorRaghukumar, C.
dc.contributor.authorSheelu, G.
dc.contributor.authorLokaBharathi, P.A.
dc.contributor.authorNair, S.
dc.contributor.authorMohandass, C.
dc.date.accessioned2009-01-07T09:37:30Z
dc.date.available2009-01-07T09:37:30Z
dc.date.issued2001
dc.identifier.citationMarine Georesources and Geotechnology, Vol.19; 1-16p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/1518
dc.description.abstractIn order to assess the impact of deep-sea mining on the in situ benthic life, the microbial standing stock and concentration of organic nutrients in the deep-sea sediments of the Central Indian Ocean Basin in the Indian pioneer area was measured. Sediments were collected using box core and grab samples during September 1996. The total bacterial numbers ranged from 10 sup(10) - 10 sup(11) cells per g sup(-1) dry weight sediment. There was a marginal decrease in the number of bacteria from surface to 30 cm depth, though the subsurface section registered a higher number than did the surface. The highest numbers were encountered at depths of 4-8 cm. The retrievable number of bacteria were two orders less in comparison with the direct total counts of bacteria. An almost homogeneous distribution of bacteria, total organic carbon, living biomass, and lipids throughout the depth of cores indicates active microbial and benthic processes in the deep sea sediments. On the other hand, a uniform distribution of total counts of bacteria, carbohydrates, and total organic carbon in all the cores indicates their stable nature and suggests that they can serve as useful parameters for long-term monitoring of the area after the benthic disturbance. Further studies on temporal variability in this region would not only verify the observed norms of distribution of these variables but would also help to understand restabilization processes after the simulated benthic disturbance
dc.language.isoen
dc.publisherTaylor and Francis
dc.rightsCopyright [2001]. 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.
dc.subjectbiomass
dc.subjectmicrobiology
dc.subjectnutrients (mineral)
dc.subjectorganic matter
dc.subjectsediments
dc.subjectdeep water
dc.subjectbaseline studies
dc.titleMicrobial biomass and organic nutrients in the deep-sea sediments of the Central Indian Ocean Basin
dc.typeJournal Article


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