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Please use this identifier to cite or link to this item: http://hdl.handle.net/2264/1415

Title: Marine environmental pollution stress detection through direct viable counts of bacteria
Authors: Ramaiah, N.
Kenkre, V.D.
Verlecar, X.N.
Citation: Water Research, Vol. 36; 2383-2393p.
Issue Date: 2002
Publisher: Pergamon
Abstract: Direct viable counts (DVC) of bacteria were quantified from polluted and relatively less/non-polluted coastal locations during different seasons to assess whether they can be routinely monitored for an understanding of environmental stress(es) that may impede the full functioning of bacterial communities in situ. Most notably, DVC were quite low during pre-monsoon (March-May) in pollution-affected locations when compared to relatively less/nonpolluted ones. In contrast, their abundance was significantly higher (up to or greater than 10%) suggesting a substantially higher microbial activity (thus, a larger turnover of organic matter) during monsoon (June-September) and post-monsoon (October-February) even in pollution-affected locations. The ease of reliably measuring DVC was useful in realising decreased metabolic functioning of bacteria during pre-monsoon, a season where dispersion of land discharges/effluents is much lower. From laboratory and field analyses of this study it is ascertained that DVC are direct indices of potential bacterial metabolic activity, reliable for sensing metabolic stress experienced by bacterial communities in situ and can be useful for evaluating risks in marine environment through human (industrial) activities.
Document type: Journal Article
Copyright: Pergamon
URI: http://hdl.handle.net/2264/1415
Appears in Collections:Interdisciplinary Oceanography

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