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Microenvironments and anomalous benthic foraminiferal distribution within the neritic regime of the Dabhol-Vengurla sector (Arabian Sea)

DRS at CSIR-National Institute of Oceanography

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Title Microenvironments and anomalous benthic foraminiferal distribution within the neritic regime of the Dabhol-Vengurla sector (Arabian Sea)
 
Creator Setty, M.G.A.P.
Nigam, R.
 
Subject Aquatic Communities
benthos
distribution
aquatic environment
vertical distribution
population number
associated species
marine environment
salinity
organic matter
species composition
Foraminifera
ISW, Arabian Sea
 
Description An anomalous distribution of benthic Foraminifera within the neritic regime at a few stations indicates the existence of microenvironments. The vertical distribution is marked by the restricted occurrence of @iCibicides@@ group at only one station (15) at 51 m and Miliolid group in station 18 at 25 m depth. The lateral distribution is characterised by a low total species number (TSN) but high total foraminiferal number (TFN) wherein at stations 6, 1, 12 and 26 @iTrochammina inflata@@; @iT. inflata@@ and @iT. pacifica@@ and @iAmmonia beccarii@@ and @iAmmobaculites agglutinans@@ are predominantly monospecific while other associated species are impoverished. The microisolation of these species is accounted to edaphic condition (for @iCibicides@@ group) at sta. 15, of organic matter percentages in the sediment (for Miliolid group) at sta. 18, @iTrochammina inflata@@ (at sta. 6); @iT. inflata@@, and @iT. pacifica@@ group (at sta. 1); @iAmmonia beccarii@@ (at sta. 12); @iT. pacifica@@ and @iAmmobaculites agglutinans@@ (at sta. 26) are characterised by low salinity (31.1 to 32.1 ppt) and estuarine condition and high organic matter content in the sediment
 
Date 1997-04-08T09:57:11Z
2017-09-29T13:48:50Z
1997-04-08T09:57:11Z
2017-09-29T13:48:50Z
1980
 
Type Journal Article
 
Identifier Rivista Italiana di Paleontologia, vol.86(2); 1980; 417-428
0035-6883
http://drs.nio.org/drs/handle/2264/6844
 
Language en
 
Relation Riv Ital Paleontol
SCI
 
Publisher Universita' degli Studi di Milano