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dc.contributor.authorMartin, G.D.
dc.contributor.authorNisha, P.A.
dc.contributor.authorBalachandran, K.K.
dc.contributor.authorMadhu, N.V.
dc.contributor.authorNair, M.
dc.contributor.authorShaiju, P.
dc.contributor.authorJoseph, T.
dc.contributor.authorSrinivas, K.
dc.contributor.authorGupta, G.V.M.
dc.date.accessioned2011-04-08T10:53:39Z
dc.date.available2011-04-08T10:53:39Z
dc.date.issued2011
dc.identifier.citationEnvironmental Monitoring and Assessment, vol.176(1-4); 2011; 427-438
dc.identifier.otherno
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/3836
dc.description.abstractThe influence of anthropogenic loading on the distribution of soft bottom benthic organisms of a tropical estuary (Cochin backwaters) was examined. The industrial activities were found to be high in the northern and central part of the estuary, where dissolved inorganic nitrogen (DIN > 210 mu M) and phosphorus (DIP > 6.5 mu M) have caused high abundance of chlorophyll a (up to 73 mg m sup(-3)) and accumulation of organic carbon in sediments (up to 5%). Principal component analysis distinguished three zones in the estuary. The central zone (Z1) was characterized by organic enrichment, low species diversity, and increased number of pollution tolerant species. Long-term deterioration of the estuary is indicated by an increase in the nutrients and chlorophyll a levels by sixfold during the last few decades. Flow restrictions in the lower estuary have lead to a fourfold increase in sediment organic carbon over the period of three decades. The reduced benthic diversity followed by an invasion of opportunistic polychaetes (<i>Capitella capitata</i>), are indicative of a stress in the estuary
dc.language.isoen
dc.publisherSpringer
dc.relation.requiresEnviron_Monit_Assess_176_427.jpg
dc.rightsAn edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2010] Springer.
dc.subjectEutrophication
dc.subjectMacrobenthos
dc.subjectPollution assessment
dc.subjectbenthic community
dc.titleEutrophication induced changes in benthic community structure of a flow-restricted tropical estuary (Cochin backwaters), India
dc.typeJournal Article


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