Competition for inorganic carbon between oxygenic and anoxygenic phototrophs in a hypersaline microbial mat, Guerrero Negro, Mexico
Article first published online: 24 JAN 2013
© 2012 Society for Applied Microbiology and Blackwell Publishing Ltd
Special Issue: Marine Microbial Ecophysiology and Metagenomics
Volume 15, Issue 5, pages 1532–1550, May 2013
How to Cite
Finke, N., Hoehler, T. M., Polerecky, L., Buehring, B. and Thamdrup, B. (2013), Competition for inorganic carbon between oxygenic and anoxygenic phototrophs in a hypersaline microbial mat, Guerrero Negro, Mexico. Environmental Microbiology, 15: 1532–1550. doi: 10.1111/1462-2920.12032
- Issue published online: 18 APR 2013
- Article first published online: 24 JAN 2013
- Accepted manuscript online: 2 NOV 2012 03:34AM EST
- Manuscript Accepted: 24 OCT 2012
- Manuscript Received: 23 OCT 2012
- Oak Ridge Postdoctoral Fellowship
- Marie Curie Outgoing International Fellowship. Grant Number: 22154
Supplementary material S1. Measurements of oxygen concentration changes following light–dark shift in different wavelength ranges.
Fig. S1. Gross oxygenic photosynthesis rates measured under full and VIS illumination. Under full illumination rate measurements were performed by either turning off the full light spectrum (Full, Full shut off) or turning off just the VIS light spectrum, leaving the NIR light on (Full, VIS shut off). Turning off the full light spectrum will affect all phototrophic organisms, while turning off only the VIS light spectrum leaves anoxygenic phototrophy using NIR light active.
Supplementary material S2. Measurement of potential rates of anoxygenic photosynthesis.
Fig. S2. Oxygen, sulfide and anoxygenic photosynthesis profiles measured in the Guerrero Negro microbial mats.
Supplementary material S3. Light intensity spectra of the different illumination settings.
Fig. S3. Spectra of the different artificial light sources used in the experiments, as determined with a calibrated spectrometer. The sun spectrum is shown for comparison.
Supplementary material S4. Change in bicarbonate ions per added proton.
Fig. S4.1. Concentration of HCO3− ions, buffering capacity, β, and the change in HCO3− ions per molecule of added strong acid, N, as a function of the carbonate buffer pH.
Fig. S4.2. The change in HCO3− ions per molecule of added strong acid, N, as a function of the carbonate buffer pH.
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