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dc.contributor.authorSetty, M.G.A.P.
dc.contributor.authorNigam, R.
dc.date.accessioned1997-04-08T10:01:06Z
dc.date.accessioned2017-09-29T13:48:28Z
dc.date.available1997-04-08T10:01:06Z
dc.date.available2017-09-29T13:48:28Z
dc.date.issued1984
dc.identifier.citationRivista Italiana di Paleontologia e Stratigrafia, vol.89(3); 1984; 421-436
dc.identifier.issn0035-6883
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/6402
dc.description.abstractTwo ecosystems affected by acidic pollutants (Thana Creek, Bombay and inshore area of Trivandrum, Kerala) and two other ecosystems affected by alkaline pollutants (Cola Bay, Goa and inshore area of Karwar, Karnataka) were studied for pollution effects monitoring through Foraminifera. In the Thana Creek area, Bombay, the magnitude of corrosive effect, lower-than-normal ornamentation, deepening of grooves and sutural thickenings, enlargement of pores, widening of apertures in Foraminifera were taken as indices of pollution effect. In the Cola bay area, Goa, the environment becomes hypertrophic resulting in large-sized, robust, mostly megalospheric forms of @iAmmonia, Elphidium@@ and @iFlorilus scaphum@@ are recorded at the proximal zone near the discharge point; miliolids in the transitional zone and dominantly smaller-sized @iNonionella, Fursenkoina pontoni, Bulimina marginata@@ at the distal zone quite far from the discharge point where pollutants are diluted and dissipated. In the Karwar area, Karnataka, pollutant causes reduced diversity with a decrease in foraminiferal population. Moreover, there is a reduction in size followed by test wall thinning in @iNonion@@ and @iAmmonia@@, increase of agglutinated forms near shore, and dispersal and dilution of the pollutants resulting in foraminiferal abundance. In the Trivandrum area, Kerala, the effluent effect presents morphological anomalies (@iOperculina, Cibicides@@), erosion along peripheries, induced growth in last few chambers, inferred dissolution and consequent destruction of small, thin-walled forms suggested by their absence, thus leaving only the larger ones in the entire area. Living/dead ratio is negatively oriented at all sites
dc.languageen
dc.publisherUniversita' degli Studi di Milano
dc.relation.ispartofRiv Ital Paleontol S
dc.relation.isreferencedbySCI
dc.subjectAquatic Pollution
dc.subject.othermarine pollution
dc.subject.othermarine environment
dc.subject.otherindicator species
dc.subject.otherbenthos
dc.subject.otherspecies diversity
dc.subject.otherheterotrophic organisms
dc.subject.otherenvironmental monitoring
dc.subject.otheranomalies
dc.subject.otherdispersion
dc.subject.otherdilution
dc.subject.otherdissolution
dc.subject.otherForaminifera
dc.subject.otherISW, India, West Coast
dc.titleBenthic foraminifera as pollution indices in the marine environment of west coast of India
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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