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dc.contributor.authorGuptha, M.V.S.
dc.contributor.authorMohan, R.
dc.contributor.authorMuralinath, A.S.
dc.identifier.citationMarine Geology, vol.120(3-4); 1994; 365-371
dc.description.abstractDuring the late summer monsoon living planktonic foraminifera were collected in the southeastern Arabian Sea between 3~'N and 15~'N by using six vertical plankton tows. Sixteen species of planktonic foraminifera were identified. Among them, @iGlobigerinoides ruber@@ and @iG. sacculifer@@ are the most abundant species, while the ecologically most important species @iGlobigerina bulloides@@ is very rare. The low abundance of @iG. bulloides@@ can be explained by the warming of the surface water in combination with deepening of the mixed layer, since this species preferentially dwells in nutrient-rich upwelling waters. The population density of planktonic foraminifera ranges between 31 and 185 specimens per 10@u-3@@m@u3@@. The low absolute numbers of planktonic foraminifera are similar to the numbers which were reported before from the non-upwelling areas in the Arabian Sea. The low absolute numbers and the collected foraminiferal assemblages are therefore highly indicative of the Arabian Sea non-upwelling areas. Particularly significant are the low absolute and relative numbers of the non-spinose species @iGloborotalia menardii@@ and @iNeogloboquadrina dutertrei@@. The absence of these species indicate the relatively low nutrient levels in this area at the tail end of the summer monsoon period
dc.relation.ispartofMar Geol
dc.subjectAquatic Communities
dc.subject.otherpopulation density
dc.subject.otherISW, Arabian Sea
dc.titleLiving planktonic foraminifera during the late summer monsoon period in the Arabian Sea
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India

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