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Bacterial growth efficiency in a tropical estuary: Seasonal variability subsidized by allochthonous carbon

DRS at CSIR-National Institute of Oceanography

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Title Bacterial growth efficiency in a tropical estuary: Seasonal variability subsidized by allochthonous carbon
 
Creator Ram, A.S.P.
Nair, S.
Chandramohan, D.
 
Subject microorganisms
estuaries
growth
seasonal variations
ecosystems
biological production
allochthonous deposits
heterotrophic organisms
organic carbon
 
Description Bacterial growth efficiency (BGE) is a key factor in understanding bacterial influence on carbon flow in aquatic ecosystems. Intra-annual variability in BGE, and bacteria-mediated carbon flow in the tropical Mandovi and Zuari estuaries (southwest India) and the adjoining coastal waters (Arabian Sea) is reported here. BGE ranged from 3% to 61% and showed clear temporal variability with significantly (ANOVA, p 1) together with high carbon flux through bacteria (>100% of primary productivity) in the estuarine and coastal waters suggests that bacterioplankton consumed dissolved organic carbon in excess of the amount produced in situ by phytoplankton of this region, which led to the mismatch between primary production of carbon and amount of carbon consumed by bacteria. Despite the two systems being subsidized by allochthonous inputs, the low BGE in the coastal waters may be attributable to the nature and time interval in the supply of allochthonous carbon.
 
Date 2007-07-18T07:37:38Z
2007-07-18T07:37:38Z
2007
 
Type Journal Article
 
Identifier Microbial Ecology, vol. 53(4); 591-599pp.
http://drs.nio.org/drs/handle/2264/622
 
Language en
 
Rights An edited version of this paper is published by Springer. Copyright Springer [2007]
 
Format 390982 bytes
application/pdf
 
Publisher Springer