Articles | Volume 13, issue 21
https://doi.org/10.5194/bg-13-5917-2016
https://doi.org/10.5194/bg-13-5917-2016
Research article
 | 
01 Nov 2016
Research article |  | 01 Nov 2016

Environmental drivers of coccolithophore abundance and calcification across Drake Passage (Southern Ocean)

Anastasia Charalampopoulou, Alex J. Poulton, Dorothee C. E. Bakker, Mike I. Lucas, Mark C. Stinchcombe, and Toby Tyrrell

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Cited articles

Abramoff, M. D., Magelhaes, P. J., and Ram, S. J.: Image processing with ImageJ, Biophotonics Int., 11, 36–42, 2004.
Assmy, P., Henjes, J., Klaas, C., and Smetacek, V.: Mechanisms determining species dominance in a phytoplankton bloom induced by the iron fertilization experiment EisenEx in the Southern Ocean, Deep-Sea Res. Pt. II, 54, 340–362, 2007.
Bakker, D. C. E., Jones, E. M., and Riley, J.: Carbon Parameters, Cruise Report No. 39, RRS James Clark Ross Cruise JC031, Hydrographic sections of Drake Passage, edited by: Hamersley, D. and McDonagh, E., National Oceanography Centre, Southampton, 51–57, 2009.
Bakker, D., McDonagh, E., Stinchcombe, M., and Messias, M.: Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V James Cook JC031 Cruise in the South Atlantic Ocean on CLIVAR Repeat Hydrography Section A21 (SR1, SR1b) (3 February–3 March, 2009), Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy, Oak Ridge, Tennessee, https://doi.org/10.3334/CDIAC/OTG.CLIVAR_A21_JC031_2009, 2013.
Balch, W. M., Fritz, J. J., and Fernandez, E.: Decoupling of calcification and photosynthesis in the coccolithophore Emiliania huxleyi under steady-state light-limited growth, Mar. Ecol.-Prog. Ser., 142, 87–97, 1996.
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Short summary
Coccolithophores are global calcifiers, potentially impacted by ocean acidity. Data from the Southern Ocean is scarce, though latitudinal gradients of acidity exist. We made measurements of calcification, species composition and physiochemical environment between America and the Antarctic Peninsula. Calcification and cell calcite declined to the south, though rates of coccolith production did not. Declining temperature and irradiance were more important in driving latitudinal changes than pH.
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