Organic matter and amino acid concentrations in surface sediments of Vembanad Lake – a tropical estuary, west coast of India |
| |
Authors: | A Verma V Subramanian |
| |
Institution: | (1) School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110 067, India, |
| |
Abstract: | The surface sediments of Vembanad Lake, a tropical estuary on the west coast of India, were analyzed for carbon (TC, TOC,
TIC), nitrogen (TN), amino acids and two amino sugars. C/N ratios for the surface sediments vary from 1.0–21.8, indicating
terrestrial sources of organic matter. Various biogeochemical indicators based on amino acids such as Asp/β-ala and Glu/γ-aba
ratios revealed that the organic matter in the 5- to 10-cm surface sediments was fresh and had not undergone extensive degradation.
However, the Gluam/Galam ratio for surface sediments of Vembanad Lake varies from 0.4–2.1, indicating the dominance of bacterial
biomass in the sediments. Organic matter in the sediments was found to be highly reactive, with a reactivity index ranging
from 2.4–7.4, suggesting rapid remineralization.
Electronic Publication |
| |
Keywords: | Organic matter Amino acids Hexosamines Vembanad Lake |
本文献已被 SpringerLink 等数据库收录! |
|