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Nutrient dynamics in the two lakes of Kerala, India

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Title Nutrient dynamics in the two lakes of Kerala, India
 
Creator Sujatha C.H
Benny, Nify
Raveendran, Ranjitha
Fanimol C.L
Samantha N.K.
 
Subject Nutrients
Ashtamudi Lake
Vembanad Lake
Sediment
Texture
 
Description 451-456
Distribution and chemistry of major inorganic forms of nutrients along with physico-chemical parameters were investigated. Surface sediments and overlying waters of the Ashtamudi and Vembanad Lakes were taken for the study, which is situated in the southwest coast of India. High concentrations of dissolved nitrogen and phosphorus compounds carried by the river leads to oxygen depletion in the water column. A concurrent increase in the bottom waters along with decrease in dissolved oxygen was noticed. This support to nitrification process operating in the sediment-water interface of the Ashtamudi and Vembanad Lake. Estuarine sediments are clayey sand to silty sand both in Ashtamudi and Vembanad in January and May. Present study indicates that the sediment texture is the major controlling factor in the distribution of these nutrient forms. For water samples nitrite, inorganic phosphate was high in Vembanad in January and May compared to Ashtamudi. For sediments, enhanced level of inorganic phosphate and nitrite was found in Vembanad during January and May. It had been observed that the level of N and P is more in sediments. A comparative assessment of the Ashtamudi and Vembanad Lake reveals that the Vembanad wetland is more deteriorated compared to the Ashtamudi wetland system.
 
Date 2010-01-05T11:44:49Z
2010-01-05T11:44:49Z
2009-12
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/7083
 
Language en_US
 
Publisher CSIR
 
Source IJMS Vol.38(4) [December 2009]