Articles | Volume 17, issue 18
Biogeosciences, 17, 4663–4679, 2020
https://doi.org/10.5194/bg-17-4663-2020

Special issue: Ocean deoxygenation: drivers and consequences – past, present...

Biogeosciences, 17, 4663–4679, 2020
https://doi.org/10.5194/bg-17-4663-2020

Research article 25 Sep 2020

Research article | 25 Sep 2020

Sediment release of dissolved organic matter to the oxygen minimum zone off Peru

Alexandra N. Loginova et al.

Related authors

Climate-Biogeochemistry Interactions in the Tropical Ocean: Data collection and legacy
Gerd Krahmann, Damian L. Arévalo-Martínez, Andrew W. Dale, Marcus Dengler, Anja Engel, Nicolaas Glock, Patricia Grasse, Johannes Hahn, Helena Hauss, Mark Hopwood, Rainer Kiko, Alexandra Loginova, Carolin R. Löscher, Marie Maßmig, Alexandra-Sophie Roy, Renato Salvatteci, Stefan Sommer, Toste Tanhua, and Hela Mehrtens
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2020-308,https://doi.org/10.5194/essd-2020-308, 2021
Preprint withdrawn
Short summary
Diapycnal dissolved organic matter supply into the upper Peruvian oxycline
Alexandra N. Loginova, Sören Thomsen, Marcus Dengler, Jan Lüdke, and Anja Engel
Biogeosciences, 16, 2033–2047, https://doi.org/10.5194/bg-16-2033-2019,https://doi.org/10.5194/bg-16-2033-2019, 2019
Short summary
Oxygen utilization and downward carbon flux in an oxygen-depleted eddy in the eastern tropical North Atlantic
Björn Fiedler, Damian S. Grundle, Florian Schütte, Johannes Karstensen, Carolin R. Löscher, Helena Hauss, Hannes Wagner, Alexandra Loginova, Rainer Kiko, Péricles Silva, Toste Tanhua, and Arne Körtzinger
Biogeosciences, 13, 5633–5647, https://doi.org/10.5194/bg-13-5633-2016,https://doi.org/10.5194/bg-13-5633-2016, 2016
Short summary
Water column biogeochemistry of oxygen minimum zones in the eastern tropical North Atlantic and eastern tropical South Pacific oceans
Carolin R. Löscher, Hermann W. Bange, Ruth A. Schmitz, Cameron M. Callbeck, Anja Engel, Helena Hauss, Torsten Kanzow, Rainer Kiko, Gaute Lavik, Alexandra Loginova, Frank Melzner, Judith Meyer, Sven C. Neulinger, Markus Pahlow, Ulf Riebesell, Harald Schunck, Sören Thomsen, and Hannes Wagner
Biogeosciences, 13, 3585–3606, https://doi.org/10.5194/bg-13-3585-2016,https://doi.org/10.5194/bg-13-3585-2016, 2016
Short summary
Changing nutrient stoichiometry affects phytoplankton production, DOP accumulation and dinitrogen fixation – a mesocosm experiment in the eastern tropical North Atlantic
J. Meyer, C. R. Löscher, S. C. Neulinger, A. F. Reichel, A. Loginova, C. Borchard, R. A. Schmitz, H. Hauss, R. Kiko, and U. Riebesell
Biogeosciences, 13, 781–794, https://doi.org/10.5194/bg-13-781-2016,https://doi.org/10.5194/bg-13-781-2016, 2016

Related subject area

Biogeochemistry: Organic Biogeochemistry
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
Archaeal intact polar lipids in polar waters: a comparison between the Amundsen and Scotia seas
Charlotte L. Spencer-Jones, Erin L. McClymont, Nicole J. Bale, Ellen C. Hopmans, Stefan Schouten, Juliane Müller, E. Povl Abrahamsen, Claire Allen, Torsten Bickert, Claus-Dieter Hillenbrand, Elaine Mawbey, Victoria Peck, Aleksandra Svalova, and James A. Smith
Biogeosciences, 18, 3485–3504, https://doi.org/10.5194/bg-18-3485-2021,https://doi.org/10.5194/bg-18-3485-2021, 2021
Short summary

Cited articles

Alkhatib, M., del Giorgio, P. A., Gelinas, Y., and Lehmann, M. F.: Benthic fluxes of dissolved organic nitrogen in the lower St. Lawrence estuary and implications for selective organic matter degradation, Biogeosciences, 10, 7609–7622, https://doi.org/10.5194/bg-10-7609-2013, 2013. a, b, c, d
Aller, R. C. and Aller, J. Y.: The effect of biogenic irrigation intensity and solute exchange on diagenetic reaction rates in marine sediments, J. Mar. Res., 56, 905–936, https://doi.org/10.1357/002224098321667413, 1998. a, b
Alperin, M. J., Martens, C. S., Albert, D. B., Suayah, I. B., Benninger, L. K., Blair, N. E., and Jahnke, R. A.: Benthic fluxes and porewater concentration profiles of dissolved organic carbon in sediments from the North Carolina continental slope, Geochim. Cosmochim. Ac., 63, 427–448, https://doi.org/10.1016/S0016-7037(99)00032-0, 1999. a, b
Arévalo-Martínez, D. L., Kock, A., Löscher, C. R., Schmitz, R. A., and Bange, H. W.: Massive nitrous oxide emissions from the tropical South Pacific Ocean, Nat. Geosci., 8, 530–533, https://doi.org/10.1038/ngeo2469, 2015. a
Arndt, S., Jørgensen, B., LaRowe, D., Middelburg, J., Pancost, R., and Regnier, P.: Quantifying the degradation of organic matter in marine sediments: A review and synthesis, Earth-Sci. Rev., 123, 53–86, https://doi.org/10.1016/j.earscirev.2013.02.008, 2013. a, b
Download
Short summary
We measured dissolved organic carbon (DOC), nitrogen (DON) and matter (DOM) optical properties in pore waters and near-bottom waters of the eastern tropical South Pacific off Peru. The difference between diffusion-driven and net fluxes of DOC and DON and qualitative changes in DOM optical properties suggested active microbial utilisation of the released DOM at the sediment–water interface. Our results suggest that the sediment release of DOM contributes to microbial processes in the area.
Altmetrics
Final-revised paper
Preprint