Ocean deoxygenation: drivers and consequences – past, present and future (BG/CP/OS inter-journal SI)(BG/CP/OS inter-journal SI)
Ocean deoxygenation: drivers and consequences – past, present and future (BG/CP/OS inter-journal SI)(BG/CP/OS inter-journal SI)
Special issue jointly organized between Biogeosciences, Climate of the Past, and Ocean Science
The distribution of oxygen in the ocean is controlled by physical, biogeochemical and biological processes. Both the supply and consumption of oxygen are sensitive to climate change in ways that are not fully understood. Recent observations suggest that the oxygen content of the ocean is declining (ocean deoxygenation) and the oxygen minimum zones and costal hypoxia sites are expanding with tremendous effects on the ocean’s ecosystems and living organisms. Following the EUR-OCEANS conference on “Ocean Deoxygenation” in Toulouse, France, in 2011, the 46th International Liège Colloquium on “Low Oxygen Environments in Marine, Fresh and Estuarine Waters” in 2014 and the discussion meeting of the Royal Society London on “Ocean Ventilation and Deoxygenation in a Warming World” in 2016, the purpose of the international conference on “Ocean Deoxygenation: Drivers & Consequences – Past|Present|Future” that took place in Kiel, 3–7 Sept 2018 organised by the Collaborative Research Centre 754 “Climate-Biogeochemical Interactions in the Tropical Ocean” was to − focus on the past, present and future state of oxygen in the ocean on global, regional and local scales − analyse mechanisms and feedbacks critical to identify natural and anthropogenic causes of oxygen variability − determine impacts on biogeochemical cycles and ecosystems.

This special issue is open to all submissions on ocean deoxygenation and is not limited to conference participants.

Purpose of special issue: The Collaborative Research Centre 754 “Climate-Biogeochemical Interactions in the Tropical Ocean” has been investigating the newly recognised threat of ocean deoxygenation since 2008. Before the project's end in 2019, the International Conference on Ocean Deoxygenation was organised in Kiel, Germany in September 2018 with over 300 participants (https://conference.sfb754.de/event/1/). Following the conference the proposed inter-journal special issue aims at presenting the recent research advances and highlights in the field of ocean deoxygenation. The special issue shall not be limited to conference participants but be open to all submissions.

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23 Dec 2020
A new intermittent regime of convective ventilation threatens the Black Sea oxygenation status
Arthur Capet, Luc Vandenbulcke, and Marilaure Grégoire
Biogeosciences, 17, 6507–6525, https://doi.org/10.5194/bg-17-6507-2020,https://doi.org/10.5194/bg-17-6507-2020, 2020
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31 Jul 2020
Characterizing deepwater oxygen variability and seafloor community responses using a novel autonomous lander
Natalya D. Gallo, Kevin Hardy, Nicholas C. Wegner, Ashley Nicoll, Haleigh Yang, and Lisa A. Levin
Biogeosciences, 17, 3943–3960, https://doi.org/10.5194/bg-17-3943-2020,https://doi.org/10.5194/bg-17-3943-2020, 2020
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22 Feb 2021
Changes in population depth distribution and oxygen stratification are involved in the current low condition of the eastern Baltic Sea cod (Gadus morhua)
Michele Casini, Martin Hansson, Alessandro Orio, and Karin Limburg
Biogeosciences, 18, 1321–1331, https://doi.org/10.5194/bg-18-1321-2021,https://doi.org/10.5194/bg-18-1321-2021, 2021
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27 Oct 2021
The riddle of eastern tropical Pacific Ocean oxygen levels: the role of the supply by intermediate-depth waters
Olaf Duteil, Ivy Frenger, and Julia Getzlaff
Ocean Sci., 17, 1489–1507, https://doi.org/10.5194/os-17-1489-2021,https://doi.org/10.5194/os-17-1489-2021, 2021
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14 Oct 2020
Effects of 238U variability and physical transport on water column 234Th downward fluxes in the coastal upwelling system off Peru
Ruifang C. Xie, Frédéric A. C. Le Moigne, Insa Rapp, Jan Lüdke, Beat Gasser, Marcus Dengler, Volker Liebetrau, and Eric P. Achterberg
Biogeosciences, 17, 4919–4936, https://doi.org/10.5194/bg-17-4919-2020,https://doi.org/10.5194/bg-17-4919-2020, 2020
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20 Jan 2021
Effects of spatial variability on the exposure of fish to hypoxia: a modeling analysis for the Gulf of Mexico
Elizabeth D. LaBone, Kenneth A. Rose, Dubravko Justic, Haosheng Huang, and Lixia Wang
Biogeosciences, 18, 487–507, https://doi.org/10.5194/bg-18-487-2021,https://doi.org/10.5194/bg-18-487-2021, 2021
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27 Nov 2020
Seasonal variability of the Arabian Sea intermediate circulation and its impact on seasonal changes of the upper oxygen minimum zone
Henrike Schmidt, Rena Czeschel, and Martin Visbeck
Ocean Sci., 16, 1459–1474, https://doi.org/10.5194/os-16-1459-2020,https://doi.org/10.5194/os-16-1459-2020, 2020
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25 Sep 2020
Sediment release of dissolved organic matter to the oxygen minimum zone off Peru
Alexandra N. Loginova, Andrew W. Dale, Frédéric A. C. Le Moigne, Sören Thomsen, Stefan Sommer, David Clemens, Klaus Wallmann, and Anja Engel
Biogeosciences, 17, 4663–4679, https://doi.org/10.5194/bg-17-4663-2020,https://doi.org/10.5194/bg-17-4663-2020, 2020
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02 Dec 2020
Diversity and distribution of nitrogen fixation genes in the oxygen minimum zones of the world oceans
Amal Jayakumar and Bess B. Ward
Biogeosciences, 17, 5953–5966, https://doi.org/10.5194/bg-17-5953-2020,https://doi.org/10.5194/bg-17-5953-2020, 2020
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03 Jun 2020
Southern California margin benthic foraminiferal assemblages record recent centennial-scale changes in oxygen minimum zone
Hannah M. Palmer, Tessa M. Hill, Peter D. Roopnarine, Sarah E. Myhre, Katherine R. Reyes, and Jonas T. Donnenfield
Biogeosciences, 17, 2923–2937, https://doi.org/10.5194/bg-17-2923-2020,https://doi.org/10.5194/bg-17-2923-2020, 2020
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22 Apr 2020
Regulation of nitrous oxide production in low-oxygen waters off the coast of Peru
Claudia Frey, Hermann W. Bange, Eric P. Achterberg, Amal Jayakumar, Carolin R. Löscher, Damian L. Arévalo-Martínez, Elizabeth León-Palmero, Mingshuang Sun, Xin Sun, Ruifang C. Xie, Sergey Oleynik, and Bess B. Ward
Biogeosciences, 17, 2263–2287, https://doi.org/10.5194/bg-17-2263-2020,https://doi.org/10.5194/bg-17-2263-2020, 2020
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30 Apr 2020
Evidence of changes in sedimentation rate and sediment fabric in a low-oxygen setting: Santa Monica Basin, CA
Nathaniel Kemnitz, William M. Berelson, Douglas E. Hammond, Laura Morine, Maria Figueroa, Timothy W. Lyons, Simon Scharf, Nick Rollins, Elizabeth Petsios, Sydnie Lemieux, and Tina Treude
Biogeosciences, 17, 2381–2396, https://doi.org/10.5194/bg-17-2381-2020,https://doi.org/10.5194/bg-17-2381-2020, 2020
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29 May 2020
Wind-driven stratification patterns and dissolved oxygen depletion off the Changjiang (Yangtze) Estuary
Taavi Liblik, Yijing Wu, Daidu Fan, and Dinghui Shang
Biogeosciences, 17, 2875–2895, https://doi.org/10.5194/bg-17-2875-2020,https://doi.org/10.5194/bg-17-2875-2020, 2020
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24 Apr 2020
Ocean deoxygenation and copepods: coping with oxygen minimum zone variability
Karen F. Wishner, Brad Seibel, and Dawn Outram
Biogeosciences, 17, 2315–2339, https://doi.org/10.5194/bg-17-2315-2020,https://doi.org/10.5194/bg-17-2315-2020, 2020
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15 Jul 2020
The control of hydrogen sulfide on benthic iron and cadmium fluxes in the oxygen minimum zone off Peru
Anna Plass, Christian Schlosser, Stefan Sommer, Andrew W. Dale, Eric P. Achterberg, and Florian Scholz
Biogeosciences, 17, 3685–3704, https://doi.org/10.5194/bg-17-3685-2020,https://doi.org/10.5194/bg-17-3685-2020, 2020
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29 Apr 2020
Cretaceous oceanic anoxic events prolonged by phosphorus cycle feedbacks
Sebastian Beil, Wolfgang Kuhnt, Ann Holbourn, Florian Scholz, Julian Oxmann, Klaus Wallmann, Janne Lorenzen, Mohamed Aquit, and El Hassane Chellai
Clim. Past, 16, 757–782, https://doi.org/10.5194/cp-16-757-2020,https://doi.org/10.5194/cp-16-757-2020, 2020
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24 May 2020
Removal of phosphorus and nitrogen in sediments of the eutrophic Stockholm archipelago, Baltic Sea
Niels A. G. M. van Helmond, Elizabeth K. Robertson, Daniel J. Conley, Martijn Hermans, Christoph Humborg, L. Joëlle Kubeneck, Wytze K. Lenstra, and Caroline P. Slomp
Biogeosciences, 17, 2745–2766, https://doi.org/10.5194/bg-17-2745-2020,https://doi.org/10.5194/bg-17-2745-2020, 2020
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18 Feb 2020
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No nitrogen fixation in the Bay of Bengal?
Carolin R. Löscher, Wiebke Mohr, Hermann W. Bange, and Donald E. Canfield
Biogeosciences, 17, 851–864, https://doi.org/10.5194/bg-17-851-2020,https://doi.org/10.5194/bg-17-851-2020, 2020
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07 Apr 2020
Is deoxygenation detectable before warming in the thermocline?
Angélique Hameau, Thomas L. Frölicher, Juliette Mignot, and Fortunat Joos
Biogeosciences, 17, 1877–1895, https://doi.org/10.5194/bg-17-1877-2020,https://doi.org/10.5194/bg-17-1877-2020, 2020
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23 Nov 2020
A numerical model study of the main factors contributing to hypoxia and its interannual and short-term variability in the East China Sea
Haiyan Zhang, Katja Fennel, Arnaud Laurent, and Changwei Bian
Biogeosciences, 17, 5745–5761, https://doi.org/10.5194/bg-17-5745-2020,https://doi.org/10.5194/bg-17-5745-2020, 2020
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19 May 2020
Quantifying the contributions of riverine vs. oceanic nitrogen to hypoxia in the East China Sea
Fabian Große, Katja Fennel, Haiyan Zhang, and Arnaud Laurent
Biogeosciences, 17, 2701–2714, https://doi.org/10.5194/bg-17-2701-2020,https://doi.org/10.5194/bg-17-2701-2020, 2020
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09 Nov 2020
Influence of intraseasonal eastern boundary circulation variability on hydrography and biogeochemistry off Peru
Jan Lüdke, Marcus Dengler, Stefan Sommer, David Clemens, Sören Thomsen, Gerd Krahmann, Andrew W. Dale, Eric P. Achterberg, and Martin Visbeck
Ocean Sci., 16, 1347–1366, https://doi.org/10.5194/os-16-1347-2020,https://doi.org/10.5194/os-16-1347-2020, 2020
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17 Jan 2020
Bacterial degradation activity in the eastern tropical South Pacific oxygen minimum zone
Marie Maßmig, Jan Lüdke, Gerd Krahmann, and Anja Engel
Biogeosciences, 17, 215–230, https://doi.org/10.5194/bg-17-215-2020,https://doi.org/10.5194/bg-17-215-2020, 2020
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17 Jan 2020
Modulation of the North Atlantic deoxygenation by the slowdown of the nutrient stream
Filippos Tagklis, Takamitsu Ito, and Annalisa Bracco
Biogeosciences, 17, 231–244, https://doi.org/10.5194/bg-17-231-2020,https://doi.org/10.5194/bg-17-231-2020, 2020
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24 Jun 2020
Bottom-water deoxygenation at the Peruvian margin during the last deglaciation recorded by benthic foraminifera
Zeynep Erdem, Joachim Schönfeld, Anthony E. Rathburn, Maria-Elena Pérez, Jorge Cardich, and Nicolaas Glock
Biogeosciences, 17, 3165–3182, https://doi.org/10.5194/bg-17-3165-2020,https://doi.org/10.5194/bg-17-3165-2020, 2020
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15 Oct 2019
Hypoxia in mangroves: occurrence and impact on valuable tropical fish habitat
Alexia Dubuc, Ronald Baker, Cyril Marchand, Nathan J. Waltham, and Marcus Sheaves
Biogeosciences, 16, 3959–3976, https://doi.org/10.5194/bg-16-3959-2019,https://doi.org/10.5194/bg-16-3959-2019, 2019
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02 May 2019
ENSO-driven fluctuations in oxygen supply and vertical extent of oxygen-poor waters in the oxygen minimum zone of the Eastern Tropical South Pacific
Yonss Saranga José, Lothar Stramma, Sunke Schmidtko, and Andreas Oschlies
Biogeosciences Discuss., https://doi.org/10.5194/bg-2019-155,https://doi.org/10.5194/bg-2019-155, 2019
Revised manuscript accepted for BG (discussion: closed, 8 comments)
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30 Jan 2020
Zooplankton diel vertical migration and downward C flux into the oxygen minimum zone in the highly productive upwelling region off northern Chile
Pritha Tutasi and Ruben Escribano
Biogeosciences, 17, 455–473, https://doi.org/10.5194/bg-17-455-2020,https://doi.org/10.5194/bg-17-455-2020, 2020
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17 Feb 2020
Trends and decadal oscillations of oxygen and nutrients at 50 to 300 m depth in the equatorial and North Pacific
Lothar Stramma, Sunke Schmidtko, Steven J. Bograd, Tsuneo Ono, Tetjana Ross, Daisuke Sasano, and Frank A. Whitney
Biogeosciences, 17, 813–831, https://doi.org/10.5194/bg-17-813-2020,https://doi.org/10.5194/bg-17-813-2020, 2020
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04 Jun 2019
| Highlight paper
Glacial CO2 decrease and deep-water deoxygenation by iron fertilization from glaciogenic dust
Akitomo Yamamoto, Ayako Abe-Ouchi, Rumi Ohgaito, Akinori Ito, and Akira Oka
Clim. Past, 15, 981–996, https://doi.org/10.5194/cp-15-981-2019,https://doi.org/10.5194/cp-15-981-2019, 2019
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