ArticleApplied and environmental microbiology2009
Temporal variation of bacterial respiration and growth efficiency in tropical coastal waters.
Article in Applied and environmental microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed.
- A novel method to simultaneously estimate bacterial respiration and growth from oxygen dynamics.ISME communications · 2026Article
- Impact of Top-Down Regulation on the Growth Efficiency of Freshwater Bacterioplankton.Microorganisms · 2024Article
- Response of CoastalFrontiers in microbiology · 2021Article
- Influence of elevated river flow on hypoxia occurrence, nutrient concentration and microbial dynamics in a tropical estuary.Environmental monitoring and assessment · 2020Article
- Drivers of Microbial Carbon Fluxes Variability in Two Oligotrophic Mediterranean Coastal Systems.Scientific reports · 2019Article
- Response of Bacterial Metabolic Activity to the River Discharge in the Pearl River Estuary: Implication for COFrontiers in microbiology · 2019Article
- Effects of eutrophication on diatom abundance, biovolume and diversity in tropical coastal waters.Environmental monitoring and assessment · 2017Article
- Synechococcus production and grazing loss rates in nearshore tropical waters.Environmental monitoring and assessment · 2017Article
- Response of marine copepods to a changing tropical environment: winners, losers and implications.PeerJ · 2016Article
- Temporal variation of phytoplankton growth and grazing loss in the west coast of Peninsular Malaysia.Environmental monitoring and assessment · 2015Article
- Potential changes in bacterial metabolism associated with increased water temperature and nutrient inputs in tropical humic lagoons.Frontiers in microbiology · 2015Article
- Role of prokaryotic biomasses and activities in carbon and phosphorus cycles at a coastal, thermohaline front and in offshore waters (Gulf of Manfredonia, Southern Adriatic Sea).Microbial ecology · 2014Article
- Investigating the spatial distribution of phototrophic picoplankton in a tropical estuary.Environmental monitoring and assessment · 2013Article
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3 authors.
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Abstract
We investigated the temporal variation of bacterial production, respiration, and growth efficiency in the tropical coastal waters of Peninsular Malaysia. We selected five stations including two estuaries and three coastal water stations. The temperature was relatively stable (averaging around 29.5 degrees C), whereas salinity was more variable in the estuaries. We also measured dissolved organic carbon and nitrogen (DOC and DON, respectively) concentrations. DOC generally ranged from 100 to 900 microM, whereas DON ranged from 0 to 32 microM. Bacterial respiration ranged from 0.5 to 3.2 microM O2 h(-1), whereas bacterial production ranged from 0.05 to 0.51 microM C h(-1). Bacterial growth efficiency was calculated as bacterial production/(bacterial production + respiration), and ranged from 0.02 to 0.40. Multiple correlation analyses revealed that bacterial production was dependent upon primary production (r2 = 0.169, df = 31, and P < 0.02) whereas bacterial respiration was dependent upon both substrate quality (i.e., DOC/DON ratio) (r2 = 0.137, df = 32, and P = 0.03) and temperature (r2 = 0.113, df = 36, and P = 0.04). Substrate quality was the most important factor (r2 = 0.119, df = 33, and P = 0.04) for the regulation of bacterial growth efficiency. Using bacterial growth efficiency values, the average bacterial carbon demand calculated was from 5.30 to 11.28 microM C h(-1). When the bacterial carbon demand was compared with primary productivity, we found that net heterotrophy was established at only two stations. The ratio of bacterial carbon demand to net primary production correlated significantly with bacterial growth efficiency (r2 = 0.341, df = 35, and P < 0.001). From nonlinear regression analysis, we found that net heterotrophy was established when bacterial growth efficiency was <0.08. Our study showed the extent of net heterotrophy in these waters and illustrated the importance of heterotrophic microbial processes in coastal aquatic food webs.
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