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BG | Articles | Volume 16, issue 11
Biogeosciences, 16, 2247–2268, 2019
https://doi.org/10.5194/bg-16-2247-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 16, 2247–2268, 2019
https://doi.org/10.5194/bg-16-2247-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 04 Jun 2019

Research article | 04 Jun 2019

Seasonality of archaeal lipid flux and GDGT-based thermometry in sinking particles of high-latitude oceans: Fram Strait (79° N) and Antarctic Polar Front (50° S)

Eunmi Park et al.

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Cited articles

Abbott, M. R., Richman, J. G., Nahorniak, J. S., and Barksdale, B. S.: Meanders in the Antarctic Polar Frontal Zone and their impact on phytoplankton, Deep-Sea Res. Pt. II, 48, 3891–3912, https://doi.org/10.1016/S0967-0645(01)00073-X, 2001. 
Alonso-Sáez, L., Andersson, A., Heinrich, F., and Bertilsson, S.: High archaeal diversity in Antarctic circumpolar deep waters, Env. Microbiol. Rep., 3, 689–697, https://doi.org/10.1111/j.1758-2229.2011.00282.x, 2011. 
Bauerfeind, E., Nöthig, E. M., Beszczynska, A., Fahl, K., Kaleschke, L., Kreker, K., Klages, M., Soltwedel, T., Lorenzen, C., and Wegner, J.: Particle sedimentation patterns in the eastern Fram Strait during 2000–2005: Results from the Arctic long-term observatory HAUSGARTEN, Deep-Sea Res. Pt. I, 56, 1471–1487, https://doi.org/10.1016/j.dsr.2009.04.011, 2009. 
Bauerfeind, E., Kattner, G., Ludwichowski, K.-U., Nöthig, E.-M., and Sandhop, N.: Inorganic nutrients measured on water bottle samples at AWI HAUSGARTEN during POLARSTERN cruise MSM29, PANGAEA, https://doi.org/10.1594/PANGAEA.834685, 2014. 
Beman, J. M., Popp, B. N., and Francis, C. A.: Molecular and biogeochemical evidence for ammonia oxidation by marine Crenarchaeota in the Gulf of California, ISME J., 2, 429–441, https://doi.org/10.1038/ismej.2008.33, 2008. 
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We analyzed GDGT-based proxy temperatures in the polar oceans. In the eastern Fram Strait (79° N), the nutrient distribution may determine the depth habit of Thaumarchaeota and thus the proxy temperature. In the Antarctic Polar Front (50° S), the contribution of Euryarchaeota or the nonlinear correlation between the proxy values and temperatures may cause the warm biases of the proxy temperatures relative to SSTs.
We analyzed GDGT-based proxy temperatures in the polar oceans. In the eastern Fram Strait...
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