Articles | Volume 14, issue 11
Biogeosciences, 14, 2865–2875, 2017
https://doi.org/10.5194/bg-14-2865-2017
Biogeosciences, 14, 2865–2875, 2017
https://doi.org/10.5194/bg-14-2865-2017
Research article
15 Jun 2017
Research article | 15 Jun 2017

Cyanobacterial carbon concentrating mechanisms facilitate sustained CO2 depletion in eutrophic lakes

Ana M. Morales-Williams et al.

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Cited articles

Anneville, O., Domaizon, I., Kerimoglu, O., Rimet, F. and Jacquet, S.: Blue-Green Algae in a Greenhouse Century? New Insights from Field Data on Climate Change Impacts on Cyanobacteria Abundance, Ecosystems, 18, 441, https://doi.org/10.1007/s10021-014-9837-6, 2015.
APHA Standard Methods for the examination of waste and wastewater, 22nd Edn., American Public Health Association, Washington DC, 2012.
Arar, E. J. and Collins, G. B.: United States Environmental Protection Agency Method 445.0: In vitro determination of chlorophyll a and pheophyton a in marine and freshwater algae by fluorescence: Revision 1.2, 1997.
Bachmann, R., Hoyer, M. V., and Canfield, D. E. J.: Predicting the frequencies of high chlorophyll levels in Florida lakes from average chlorophyll or nutrient data, Lake Reserv. Manag., 19, 229–241, 2003.
Bade, D. L., Carpenter, S. R., Cole, J. J., Hanson, P. C., and Hesslein, R. H.: Controls of delta 13 C-DIC in lakes?: Geochemistry , lake metabolism, and morphometry, Limnol. Oceanogr., 49, 1160–1172, 2004.
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Short summary
Our study investigated the mechanisms sustaining cyanobacteria blooms when CO2 is depleted in lake surface waters. We found that when lake CO2 concentrations drop below those of the atmosphere, cyanobacteria switch on carbon concentrating mechanisms (CCMs), allowing them to actively take up bicarbonate. This may provide bloom-forming cyanobacteria with a competitive advantage over other algae. These results provide insight into the timing and duration of blooms in high-nutrient lakes.
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