Articles | Volume 16, issue 22
Biogeosciences, 16, 4451–4461, 2019
https://doi.org/10.5194/bg-16-4451-2019
Biogeosciences, 16, 4451–4461, 2019
https://doi.org/10.5194/bg-16-4451-2019

Research article 25 Nov 2019

Research article | 25 Nov 2019

Validation of carbon isotope fractionation in algal lipids as a pCO2 proxy using a natural CO2 seep (Shikine Island, Japan)

Caitlyn R. Witkowski et al.

Related authors

Novel hydrocarbon-utilizing soil mycobacteria synthesize unique mycocerosic acids at a Sicilian everlasting fire
Nadine T. Smit, Laura Villanueva, Darci Rush, Fausto Grassa, Caitlyn R. Witkowski, Mira Holzheimer, Adriaan J. Minnaard, Jaap S. Sinninghe Damsté, and Stefan Schouten
Biogeosciences, 18, 1463–1479, https://doi.org/10.5194/bg-18-1463-2021,https://doi.org/10.5194/bg-18-1463-2021, 2021
Short summary

Related subject area

Biogeochemistry: Organic Biogeochemistry
Bacteriohopanetetrol-x: constraining its application as a lipid biomarker for marine anammox using the water column oxygen gradient of the Benguela upwelling system
Zoë Rebecca van Kemenade, Laura Villanueva, Ellen C. Hopmans, Peter Kraal, Harry J. Witte, Jaap S. Sinninghe Damsté, and Darci Rush
Biogeosciences Discuss., https://doi.org/10.5194/bg-2021-257,https://doi.org/10.5194/bg-2021-257, 2021
Revised manuscript accepted for BG
Short summary
Active and passive fluxes of carbon, nitrogen, and phosphorus in the northern South China Sea
Jia-Jang Hung, Ching-Han Tung, Zong-Ying Lin, Yuh-ling Lee Chen, Shao-Hung Peng, Yen-Huei Lin, and Li-Shan Tsai
Biogeosciences, 18, 5141–5162, https://doi.org/10.5194/bg-18-5141-2021,https://doi.org/10.5194/bg-18-5141-2021, 2021
Short summary
Cyanobacteria net community production in the Baltic Sea as inferred from profiling pCO2 measurements
Jens Daniel Müller, Bernd Schneider, Ulf Gräwe, Peer Fietzek, Marcus Bo Wallin, Anna Rutgersson, Norbert Wasmund, Siegfried Krüger, and Gregor Rehder
Biogeosciences, 18, 4889–4917, https://doi.org/10.5194/bg-18-4889-2021,https://doi.org/10.5194/bg-18-4889-2021, 2021
Short summary
Reviews and syntheses: Heterotrophic fixation of inorganic carbon – significant but invisible flux in environmental carbon cycling
Alexander Braun, Marina Spona-Friedl, Maria Avramov, Martin Elsner, Federico Baltar, Thomas Reinthaler, Gerhard J. Herndl, and Christian Griebler
Biogeosciences, 18, 3689–3700, https://doi.org/10.5194/bg-18-3689-2021,https://doi.org/10.5194/bg-18-3689-2021, 2021
Short summary
Revised fractional abundances and warm-season temperatures substantially improve brGDGT calibrations in lake sediments
Jonathan H. Raberg, David J. Harning, Sarah E. Crump, Greg de Wet, Aria Blumm, Sebastian Kopf, Áslaug Geirsdóttir, Gifford H. Miller, and Julio Sepúlveda
Biogeosciences, 18, 3579–3603, https://doi.org/10.5194/bg-18-3579-2021,https://doi.org/10.5194/bg-18-3579-2021, 2021
Short summary

Cited articles

Agostini, S., Wada, S., Kon, K., Omori, A., Kohtsuka, H., Fujimura, H., Tsuchiya, Y., Sato, T., Shinagawa, H., Yamada, Y., and Inaba, K.: Geochemistry of two shallow CO2 seeps in Shikine Island (Japan) and their potential for ocean acidification research, Regional Studies in Marine Science, 2, 45–53, 2015. 
Agostini, S., Harvey, B. P., Wada, S., Kon, K., Milazzo, M., Inaba, K., and Hall-Spencer, J. M.: Ocean acidification drives community shifts towards simplified non-calcified habitats in a subtropical-temperate transition zone, Sci. Rep., 8, 11354, https://doi.org/10.1038/s41598-018-29251-7, 2018. 
Badger, M. P. S., Chalk, T. B., Foster, G. L., Bown, P. R., Gibbs, S. J., Sexton, P. F., Schmidt, D. N., Pälike, H., Mackensen, A., and Pancost, R. D.: Insensitivity of alkenone carbon isotopes to atmospheric CO2 at low to moderate CO2 levels, Clim. Past, 15, 539–554, https://doi.org/10.5194/cp-15-539-2019, 2019. 
Benthien, A., Zondervan, I., Engel, A., Hefter, J., Terbruggen, A., and Riebesell, U.: Carbon isotopic fractionation during a mesocosm bloom experiment dominated by Emiliania huxleyi: Effects of CO2 concentration and primary production, Geochim. Cosmochim. Ac., 71, 1528–1541, https://doi.org/10.1016/j.gca.2006.12.015, 2007. 
Bice, K. L., Birgel, D., Meyers, P. A., Dahl, K. A., Hinrichs, K. U., and Norris, R. D.: A multiple proxy and model study of Cretaceous upper ocean temperatures and atmospheric CO2 concentrations, Paleoceanography, 21, PA2002, https://doi.org/10.1029/2005PA001203, 2006. 
Download
Short summary
Carbon dioxide concentrations (pCO2) in the atmosphere play an integral role in Earth system dynamics, especially climate. Past climates help us understand future ones, but reconstructing pCO2 over the geologic record remains a challenge. This research demonstrates new approaches for exploring past pCO2 via the carbon isotope fractionation in general algal lipids, which we test over a high CO2 gradient from a naturally occurring CO2 seep.
Altmetrics
Final-revised paper
Preprint