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dc.contributor.authorMitbavkar, S.
dc.contributor.authorRajaneesh, K.M.
dc.contributor.authorAnil, A.C.
dc.contributor.authorSundar, D.
dc.date.accessioned2012-07-27T10:30:25Z
dc.date.available2012-07-27T10:30:25Z
dc.date.issued2012
dc.identifier.citationEstuarine, Coastal and Shelf Science vol.107; 2012; 159-164
dc.identifier.otherno
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/4101
dc.description.abstractThe influence of hydrography on the picophytoplankton (PP) abundance in estuaries was studied by sampling along a salinity gradient in an Indian estuary. Prochlorococcus-like cells were detected at salinities ranging from 0.06 to 35, which otherwise is reported from offshore regions, thereby showing that this group is capable of surviving in estuarine waters. PP also comprised picoeukaryotes and two groups of Synechococcus, one rich in phycoerythrin (SYN-PE) and other in phycocyanin (SYN-PC). Salinity played an important role in the picophytoplankton distribution. SYN-PE was represented by two sub-groups, one which was found only in saline waters (SYN-PEII) and the other throughout the salinity gradient (SYN-PEI). SYN-PEI and SYN-PC dominated downstream and upstream, respectively but were present throughout the salinity gradient unlike in other estuarine regions. Picoeukaryotes abundance showed an increasing trend from saline to brackish water and decreased in freshwater. The entry of seawater into the estuary regulated SYN-PE and Prochlorococcus-like cells downstream whereas their higher abundance in freshwater could be due to different strains of freshwater origin. The average contribution of PP to the total photosynthetic biomass during spring and neap tides was 43 percent and 29 percent respectively, which highlights the importance of PP in estuaries.
dc.language.isoen
dc.publisherElsevier
dc.relation.requiresEstuar_Coast_Shelf_Sci_107_159.jpg
dc.rightsAn edited version of this paper was published by Elsevier. Copyright [2012] Elsevier
dc.subjectphytoplankton
dc.subjectcommunity composition
dc.subjectpopulation structure
dc.subjectsalinity
dc.subjectProchlorococcus
dc.titlePicophytoplankton community in a tropical estuary: Detection of Prochlorococcus-like populations
dc.typeJournal Article


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