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Abundance and production of particle-associated bacteria and their role in a mangrove-dominated estuary

DRS at CSIR-National Institute of Oceanography

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Title Abundance and production of particle-associated bacteria and their role in a mangrove-dominated estuary
 
Creator DeSouza, M.J.B.D.
Nair, S.
LokaBharathi, P.A.
Chandramohan, D.
 
Subject microorganisms
biological production
tropical environment
mangrove swamps
suspended load
estuaries
 
Description A 1 yr study was carried out in the mangrove-dominated, tropical Mandovi estuary (Goa, India) to assess the contribution of particle-associated bacteria (PAB) to the system?s variability in terms of abundance and productivity. The suspended load, which was composed of inorganic mineral grains and allochthonous materials including mangrove litter, was high during the southwest (SW) monsoon season. The ratio of organic:inorganic content of these particles was low during the pre- and post-monsoon seasons. PAB abundance ranged from 0.01 x 10 sup(10) to 22.8 x 10 sup(10) m sup(-2) and accounted for 4 to 94% of the total bacterial abundance. The variation in PAB abundance was due to their preferential colonization, which depended on the quantity and quality of the particles. The average annual PAB production was 214 mu g C m sup(-2) d sup(-1) and contributed to an average of 35% of the total bacterial production. Primary productivity (PP) was 137, 14, and 163 mu g C m sup(-2) d sup(-1) for the pre-monsoon, SW monsoon, and post-monsoon periods, respectively. The calculated maximum bacterial carbon demand (BCD) of PAB was 37% of the total BCD. On an annual basis,
 
Date 2009-11-10T11:29:05Z
2009-11-10T11:29:05Z
2009
 
Type Journal Article
 
Identifier Aquatic Microbial Ecology, vol.57(2); 151-159
http://drs.nio.org/drs/handle/2264/3431
 
Language en
 
Rights An edited version of this paper was published by Inter-Research? Inter-Research 2009
 
Publisher Inter-Research