Record Details

Distribution of nutrients in the coastal and estuarine waters of Goa

DRS at CSIR-National Institute of Oceanography

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Title Distribution of nutrients in the coastal and estuarine waters of Goa
 
Creator Verlecar, X.N.
 
Subject Chemistry and Biogeochemistry
vertical distribution
phytoplankton
monsoons
chlorophylls
primary production
salinity
seasonal variations
phosphates
nitrates
coasts
nutrients (mineral)
estuaries
ISW, India, Goa, Mandovi Estuary
 
Description Concentrations of nitrate and phosphate in the coastal waters of Goa varied from 0 to 2.4 mu g at 1-1 and from 0.1 to 2.4 mu g at 1-1 respectively, during post and premonsoon periods. In the estuarine region the nutrients like nitrate and ammonia remained higher than those in the coastal waters. The relation between salinity and nutrients suggest that the fresh water is the main source for the addition of nitrate to the estuary. Seasonal fluctuation in the primary productivity and chlorophyll a values were noticed in the Mandovi estuary and the adjoining coastal waters. The NO3 -: PO4 -3 concentration ratio remained low during post and premonsoon periods when the primary productivity was high. The ratio of change for nitrate and phosphate (Delta N : Delta P) showed a low value of 11 (by atoms). The No3 - : PO4 -3 concentration ratio and the assimilation ratio clearly showed that the nitrate is deficient in these waters during post and premonsoon periods. But the high levels of ammonia (ranging between 0.23 to 7.8 mu g at 1-1 available in these waters could suggests that this nutrient compensates to some extent the observed deficiencies of nitrate
 
Date 1995-06-17T10:01:32Z
2017-09-29T13:48:09Z
1995-06-17T10:01:32Z
2017-09-29T13:48:09Z
1987
 
Type Journal Article
 
Identifier Mahasagar, vol.20; 1987; 205-215
0542-0938
http://drs.nio.org/drs/handle/2264/6025
 
Language en
 
Relation Mahasagar
NON-SCI
 
Publisher Indian Association for Limnology and Oceanography