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Dissolved inorganic nutrients, organic matter and stable nitrogen isotopes as indicators of human impact in two contrasting estuaries in West Bengal, India, during winter monsoon

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Title Dissolved inorganic nutrients, organic matter and stable nitrogen isotopes as indicators of human impact in two contrasting estuaries in West Bengal, India, during winter monsoon
 
Creator Fischer, Peter
Unger, Daniela
Palit, Anup
Einsporn, Marc H.
Lara, Rubén J.
 
Subject Bay of Bengal
Sundarbans
Dissolved inorganic nutrients
Amino acids
δ15N
Anthropogenic impact
 
Description 16-28
The present study consists of the analyses of dissolved inorganic nutrients (NH4 , NO3 , NO2 , PO4 , Si(OH)4), dissolved organic nitrogen (DON), particulate nitrogen, particulate organic carbon, amino acids and δ15N of particulate nitrogen and NO - from Hooghly and Matla estuary. Hooghly estuary was sampled at 2 stations, at Kolkata and ca. 60 km downstream. Mangrove
3-

dominated Matla estuary was investigated along a N-S transect. Dissolved inorganic nitrogen, PO4

and DON concentrations

were low, especially for the Hooghly site at Kolkata. Human influence, however, was revealed by the more labile nature and
elevated concentrations of amino acids in Kolkata. Release of nutrients from particulate matter during estuarine transport

resulted in higher NO -

and PO 3-

concentrations downstream Kolkata. In Matla estuary no human influence was detected and

nitrogen fixation was observed.
 
Date 2016-07-21T05:04:26Z
2016-07-21T05:04:26Z
2016-01
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/jspui/handle/123456789/34849
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.45(01) [January 2016]