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Dissolved organic nutrients and phytoplankton production in the Mandovi estuary and coastal waters of Goa

DRS at CSIR-National Institute of Oceanography

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Title Dissolved organic nutrients and phytoplankton production in the Mandovi estuary and coastal waters of Goa
 
Creator Verlecar, X.N.
 
Subject Aquatic Ecology, Productivity
organic phosphorus
organic nitrogen
chlorophylls
coastal waters
estuaries
primary production
phytoplankton
nutrients (mineral)
ISW, India, Goa, Mandovi Estuary
 
Description Total organic nitrogen (TON) and dissolved organic phosphorus (DOP) in the coastal and estuarine waters of Goa, India varied from 0.6 to 47.1 mu g-at N 1-1 and 0.12 to 3.49 mu g-at P l-1 respectively. The chlorophyll content of these waters fluctuated from 0.3 to 11.3 mg m-3. The increase in TON and DOP in June and October coincided with the chlorophyll peak, there-by suggesting that these two are derived from planktonic activity. The low values of concentration ratio and assimilation ratio (NO3 -: PO4 3-) suggested that inorganic nutrients were deficient in these waters. However, the percentage of TON and DOP in total nitrogen and total dissolved phosphorus varied from 50.7 to 96.6% and 15.3 to 74.6% respectively, during the post and premonsoon months, when the production remained high. A large portion of TON and DON in the coastal and estuarine waters of Goa might serve as an efficient nutrient supplement for the phytoplankton at times of nitrate deficiency
 
Date 1995-05-17T10:01:03Z
2017-09-29T13:48:29Z
1995-05-17T10:01:03Z
2017-09-29T13:48:29Z
1984
 
Type Journal Article
 
Identifier Mahasagar, vol.17; 1984; 141-149
0542-0938
http://drs.nio.org/drs/handle/2264/6414
 
Language en
 
Relation Mahasagar
NON-SCI
 
Publisher Indian Association for Limnology and Oceanography