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Seawater carbonate chemistry, biomass and metabolic rates (leucine incorporation, CO2 fixation and respiration) of Rhodobacteraceae (strain MED165) and Flavobacteriaceae (strain MED217) in a laboratory experiment

Experimental results related to the effects of ocean acidification on planktonic marine microbes are still rather inconsistent and occasionally contradictory. Moreover, laboratory or field experiments that address the effects of changes in CO2 concentrations on heterotrophic microbes are very scarce, despite the major role of these organisms in the marine carbon cycle. We tested the direct effect of an elevated CO2 concentration (1000 ppmv) on the biomass and metabolic rates (leucine incorporation, CO2 fixation and respiration) of 2 isolates belonging to 2 relevant marine bacterial families, Rhodobacteraceae (strain MED165) and Flavobacteriaceae (strain MED217). Our results demonstrate that, contrary to some expectations, high pCO2 did not negatively affect bacterial growth but increased growth efficiency in the case of MED217. The elevated partial pressure of CO2 (pCO2) caused, in both cases, higher rates of CO2 fixation in the dissolved fraction and, in the case of MED217, lower respiration rates. Both responses would tend to increase the pH of seawater acting as a negative feedback between elevated atmospheric CO2 concentrations and ocean acidification.

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Cite this as

Teira, Eva, Fernández, A, Alvarez-Salgado, Xose Anton, García-Martín, Enma Elena, Serret, Pablo, Sobrino, Cristina (2012). Dataset: Seawater carbonate chemistry, biomass and metabolic rates (leucine incorporation, CO2 fixation and respiration) of Rhodobacteraceae (strain MED165) and Flavobacteriaceae (strain MED217) in a laboratory experiment. https://doi.org/10.1594/PANGAEA.831372

DOI retrieved: 2012

Additional Info

Field Value
Imported on November 29, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.831372
Author Teira, Eva
Given Name Eva
Family Name Teira
More Authors
Fernández, A
Alvarez-Salgado, Xose Anton
García-Martín, Enma Elena
Serret, Pablo
Sobrino, Cristina
Source Creation 2012
Publication Year 2012
Resource Type text/tab-separated-values - filename: Teira_2012
Subject Areas
Name: BiologicalClassification

Name: Biosphere

Name: Chemistry

Name: Ecology

Name: Oceans

Related Identifiers
Title: Response of two marine bacterial isolates to high CO2 concentration
Identifier: https://doi.org/10.3354/meps09644
Type: DOI
Relation: IsSupplementTo
Year: 2012
Source: Marine Ecology Progress Series
Authors: Teira Eva , Fernández Ana , Alvarez-Salgado Xose Anton , García-Martín Enma Elena , Serret Pablo , Sobrino Cristina .

Title: seacarb: seawater carbonate chemistry with R. R package version 2.4
Identifier: https://cran.r-project.org/package=seacarb
Type: DOI
Relation: References
Year: 2011
Authors: Lavigne Héloïse , Gattuso Jean-Pierre .