Low oxygen environments in marine, fresh and estuarine waters
Low oxygen environments in marine, fresh and estuarine waters
Editor(s): B. Currie, V. Garçon, M. Grégoire, L. Levin, C. Rabouille, and L. Stramma
Hypoxic to anoxic and even sulfidic conditions have already been reported for various aquatic systems, from lakes, estuaries and coastal areas to off-shore regions of the ocean, where oxygen supply does not compensate for its consumption in various redox processes, including respiration of organic matter. In the coastal ocean, oxygen minimum zones (OMZs) have spread exponentially since the 1960s with potential catastrophic biological losses for the benthic communities living on the bottom. In the open ocean, eastern boundary upwelling systems (EBUSs) are characterized by high primary and export production that, in combination with weak ventilation, cause oxygen depletion and the development of OMZs in sub-surface waters.

The purpose of the 46th International Liege Colloquium organized in May 2014 on "Low Oxygen Environments in marine, fresh and estuarine waters" was to generate an overview of the current knowledge on deoxygenation, its monitoring, modelling, impact on ecosystems and biogeochemical cycles as well as the potential evolution of low oxygen conditions in a changing climate (http://modb.oce.ulg.ac.be/?page=colloquium&year=2014). Thematic sessions have been organized on the following:

  • 1. deoxygenation, marine resources, ecosystem functioning and structure of the food web;
  • 2. deoxygenation and biogeochemical cycles;
  • 3. life and processes in redox gradients;
  • 4. palaeoproxies of hypoxia;
  • 5. modelling hypoxia;
  • 6. oxygen time series and instrumental developments;
  • 7. eastern boundary upwelling systems (EBUS) as natural SOLAS laboratories;
  • 8. deoxygenation in a global change context.

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19 Apr 2016
Ammonium excretion and oxygen respiration of tropical copepods and euphausiids exposed to oxygen minimum zone conditions
Rainer Kiko, Helena Hauss, Friedrich Buchholz, and Frank Melzner
Biogeosciences, 13, 2241–2255, https://doi.org/10.5194/bg-13-2241-2016,https://doi.org/10.5194/bg-13-2241-2016, 2016
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08 Apr 2016
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A multiproxy approach to understanding the "enhanced" flux of organic matter through the oxygen-deficient waters of the Arabian Sea
Richard G. Keil, Jacquelyn A. Neibauer, Christina Biladeau, Kelsey van der Elst, and Allan H. Devol
Biogeosciences, 13, 2077–2092, https://doi.org/10.5194/bg-13-2077-2016,https://doi.org/10.5194/bg-13-2077-2016, 2016
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01 Mar 2016
Decline of the Black Sea oxygen inventory
Arthur Capet, Emil V. Stanev, Jean-Marie Beckers, James W. Murray, and Marilaure Grégoire
Biogeosciences, 13, 1287–1297, https://doi.org/10.5194/bg-13-1287-2016,https://doi.org/10.5194/bg-13-1287-2016, 2016
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09 Sep 2016
Box-modelling of the impacts of atmospheric nitrogen deposition and benthic remineralisation on the nitrogen cycle of the eastern tropical South Pacific
Bei Su, Markus Pahlow, and Andreas Oschlies
Biogeosciences, 13, 4985–5001, https://doi.org/10.5194/bg-13-4985-2016,https://doi.org/10.5194/bg-13-4985-2016, 2016
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20 May 2016
Biogeochemical characteristics of a long-lived anticyclonic eddy in the eastern South Pacific Ocean
Marcela Cornejo D'Ottone, Luis Bravo, Marcel Ramos, Oscar Pizarro, Johannes Karstensen, Mauricio Gallegos, Marco Correa-Ramirez, Nelson Silva, Laura Farias, and Lee Karp-Boss
Biogeosciences, 13, 2971–2979, https://doi.org/10.5194/bg-13-2971-2016,https://doi.org/10.5194/bg-13-2971-2016, 2016
15 Jan 2016
Millennial changes in North Atlantic oxygen concentrations
B. A. A. Hoogakker, D. J. R. Thornalley, and S. Barker
Biogeosciences, 13, 211–221, https://doi.org/10.5194/bg-13-211-2016,https://doi.org/10.5194/bg-13-211-2016, 2016
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28 Apr 2016
Looking beyond stratification: a model-based analysis of the biological drivers of oxygen deficiency in the North Sea
Fabian Große, Naomi Greenwood, Markus Kreus, Hermann-Josef Lenhart, Detlev Machoczek, Johannes Pätsch, Lesley Salt, and Helmuth Thomas
Biogeosciences, 13, 2511–2535, https://doi.org/10.5194/bg-13-2511-2016,https://doi.org/10.5194/bg-13-2511-2016, 2016
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15 Jan 2016
Structure and function of nematode communities across the Indian western continental margin and its oxygen minimum zone
R. Singh and B. S. Ingole
Biogeosciences, 13, 191–209, https://doi.org/10.5194/bg-13-191-2016,https://doi.org/10.5194/bg-13-191-2016, 2016
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29 Oct 2015
Two-dimensional distribution of living benthic foraminifera in anoxic sediment layers of an estuarine mudflat (Loire estuary, France)
A. Thibault de Chanvalon, E. Metzger, A. Mouret, F. Cesbron, J. Knoery, E. Rozuel, P. Launeau, M. P. Nardelli, F. J. Jorissen, and E. Geslin
Biogeosciences, 12, 6219–6234, https://doi.org/10.5194/bg-12-6219-2015,https://doi.org/10.5194/bg-12-6219-2015, 2015
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15 Mar 2016
Thermocline mixing and vertical oxygen fluxes in the stratified central North Sea
Lorenzo Rovelli, Marcus Dengler, Mark Schmidt, Stefan Sommer, Peter Linke, and Daniel F. McGinnis
Biogeosciences, 13, 1609–1620, https://doi.org/10.5194/bg-13-1609-2016,https://doi.org/10.5194/bg-13-1609-2016, 2016
29 Feb 2016
Drivers of summer oxygen depletion in the central North Sea
Bastien Y. Queste, Liam Fernand, Timothy D. Jickells, Karen J. Heywood, and Andrew J. Hind
Biogeosciences, 13, 1209–1222, https://doi.org/10.5194/bg-13-1209-2016,https://doi.org/10.5194/bg-13-1209-2016, 2016
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15 Jan 2016
Parameterization of biogeochemical sediment–water fluxes using in situ measurements and a diagenetic model
A. Laurent, K. Fennel, R. Wilson, J. Lehrter, and R. Devereux
Biogeosciences, 13, 77–94, https://doi.org/10.5194/bg-13-77-2016,https://doi.org/10.5194/bg-13-77-2016, 2016
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18 Sep 2015
A comparison of benthic foraminiferal Mn / Ca and sedimentary Mn / Al as proxies of relative bottom-water oxygenation in the low-latitude NE Atlantic upwelling system
C. L. McKay, J. Groeneveld, H. L. Filipsson, D. Gallego-Torres, M. J. Whitehouse, T. Toyofuku, and O.E. Romero
Biogeosciences, 12, 5415–5428, https://doi.org/10.5194/bg-12-5415-2015,https://doi.org/10.5194/bg-12-5415-2015, 2015
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21 Sep 2015
Oxygen minimum zones in the tropical Pacific across CMIP5 models: mean state differences and climate change trends
A. Cabré, I. Marinov, R. Bernardello, and D. Bianchi
Biogeosciences, 12, 5429–5454, https://doi.org/10.5194/bg-12-5429-2015,https://doi.org/10.5194/bg-12-5429-2015, 2015
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22 Oct 2015
Interdecadal changes in intensity of the oxygen minimum zone off Concepción, Chile (~ 36° S), over the last century
B. Srain, S. Pantoja, J. Sepúlveda, C. B. Lange, P. Muñoz, R. E. Summons, J. McKay, and M. Salamanca
Biogeosciences, 12, 6045–6058, https://doi.org/10.5194/bg-12-6045-2015,https://doi.org/10.5194/bg-12-6045-2015, 2015
20 Jun 2016
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
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25 Aug 2015
Living (Rose-Bengal-stained) benthic foraminiferal faunas along a strong bottom-water oxygen gradient on the Indian margin (Arabian Sea)
C. Caulle, M. Mojtahid, A. J. Gooday, F. J. Jorissen, and H. Kitazato
Biogeosciences, 12, 5005–5019, https://doi.org/10.5194/bg-12-5005-2015,https://doi.org/10.5194/bg-12-5005-2015, 2015
21 Aug 2015
Assessing the potential of amino acid 13C patterns as a carbon source tracer in marine sediments: effects of algal growth conditions and sedimentary diagenesis
T. Larsen, L. T. Bach, R. Salvatteci, Y. V. Wang, N. Andersen, M. Ventura, and M. D. McCarthy
Biogeosciences, 12, 4979–4992, https://doi.org/10.5194/bg-12-4979-2015,https://doi.org/10.5194/bg-12-4979-2015, 2015
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11 Sep 2015
Reconstruction of super-resolution ocean pCO2 and air–sea fluxes of CO2 from satellite imagery in the southeastern Atlantic
I. Hernández-Carrasco, J. Sudre, V. Garçon, H. Yahia, C. Garbe, A. Paulmier, B. Dewitte, S. Illig, I. Dadou, M. González-Dávila, and J. M. Santana-Casiano
Biogeosciences, 12, 5229–5245, https://doi.org/10.5194/bg-12-5229-2015,https://doi.org/10.5194/bg-12-5229-2015, 2015
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30 Apr 2015
Open ocean dead zones in the tropical North Atlantic Ocean
J. Karstensen, B. Fiedler, F. Schütte, P. Brandt, A. Körtzinger, G. Fischer, R. Zantopp, J. Hahn, M. Visbeck, and D. Wallace
Biogeosciences, 12, 2597–2605, https://doi.org/10.5194/bg-12-2597-2015,https://doi.org/10.5194/bg-12-2597-2015, 2015
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11 Mar 2015
Biogeochemical processes and buffering capacity concurrently affect acidification in a seasonally hypoxic coastal marine basin
M. Hagens, C. P. Slomp, F. J. R. Meysman, D. Seitaj, J. Harlay, A. V. Borges, and J. J. Middelburg
Biogeosciences, 12, 1561–1583, https://doi.org/10.5194/bg-12-1561-2015,https://doi.org/10.5194/bg-12-1561-2015, 2015
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07 Apr 2015
Methanotrophy within the water column of a large meromictic tropical lake (Lake Kivu, East Africa)
C. Morana, A. V. Borges, F. A. E. Roland, F. Darchambeau, J.-P. Descy, and S. Bouillon
Biogeosciences, 12, 2077–2088, https://doi.org/10.5194/bg-12-2077-2015,https://doi.org/10.5194/bg-12-2077-2015, 2015
02 Apr 2015
Numerical analysis of the primary processes controlling oxygen dynamics on the Louisiana shelf
L. Yu, K. Fennel, A. Laurent, M. C. Murrell, and J. C. Lehrter
Biogeosciences, 12, 2063–2076, https://doi.org/10.5194/bg-12-2063-2015,https://doi.org/10.5194/bg-12-2063-2015, 2015
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24 Feb 2015
Records of past mid-depth ventilation: Cretaceous ocean anoxic event 2 vs. Recent oxygen minimum zones
J. Schönfeld, W. Kuhnt, Z. Erdem, S. Flögel, N. Glock, M. Aquit, M. Frank, and A. Holbourn
Biogeosciences, 12, 1169–1189, https://doi.org/10.5194/bg-12-1169-2015,https://doi.org/10.5194/bg-12-1169-2015, 2015
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11 Mar 2015
Organic carbon production, mineralisation and preservation on the Peruvian margin
A. W. Dale, S. Sommer, U. Lomnitz, I. Montes, T. Treude, V. Liebetrau, J. Gier, C. Hensen, M. Dengler, K. Stolpovsky, L. D. Bryant, and K. Wallmann
Biogeosciences, 12, 1537–1559, https://doi.org/10.5194/bg-12-1537-2015,https://doi.org/10.5194/bg-12-1537-2015, 2015
27 Jan 2015
On the role of circulation and mixing in the ventilation of oxygen minimum zones with a focus on the eastern tropical North Atlantic
P. Brandt, H. W. Bange, D. Banyte, M. Dengler, S.-H. Didwischus, T. Fischer, R. J. Greatbatch, J. Hahn, T. Kanzow, J. Karstensen, A. Körtzinger, G. Krahmann, S. Schmidtko, L. Stramma, T. Tanhua, and M. Visbeck
Biogeosciences, 12, 489–512, https://doi.org/10.5194/bg-12-489-2015,https://doi.org/10.5194/bg-12-489-2015, 2015
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