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An Experiment with Forced Oxygenation of the Deepwater of the Anoxic By Fjord, Western Sweden

In a 2.5-year-long environmental engineering experiment in the By Fjord, surface water was pumped into the deepwater where the frequency of deepwater renewals increased by a factor of 10. During the experiment, the deepwater became long-term oxic, and nitrate became the dominating dissolved inorgani...

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Autores principales: Stigebrandt, Anders, Liljebladh, Bengt, de Brabandere, Loreto, Forth, Michael, Granmo, Åke, Hall, Per, Hammar, Jonatan, Hansson, Daniel, Kononets, Mikhail, Magnusson, Marina, Norén, Fredrik, Rahm, Lars, Treusch, Alexander H., Viktorsson, Lena
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Netherlands 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4293361/
https://www.ncbi.nlm.nih.gov/pubmed/24789509
http://dx.doi.org/10.1007/s13280-014-0524-9
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author Stigebrandt, Anders
Liljebladh, Bengt
de Brabandere, Loreto
Forth, Michael
Granmo, Åke
Hall, Per
Hammar, Jonatan
Hansson, Daniel
Kononets, Mikhail
Magnusson, Marina
Norén, Fredrik
Rahm, Lars
Treusch, Alexander H.
Viktorsson, Lena
author_facet Stigebrandt, Anders
Liljebladh, Bengt
de Brabandere, Loreto
Forth, Michael
Granmo, Åke
Hall, Per
Hammar, Jonatan
Hansson, Daniel
Kononets, Mikhail
Magnusson, Marina
Norén, Fredrik
Rahm, Lars
Treusch, Alexander H.
Viktorsson, Lena
author_sort Stigebrandt, Anders
collection PubMed
description In a 2.5-year-long environmental engineering experiment in the By Fjord, surface water was pumped into the deepwater where the frequency of deepwater renewals increased by a factor of 10. During the experiment, the deepwater became long-term oxic, and nitrate became the dominating dissolved inorganic nitrogen component. The amount of phosphate in the water column decreased by a factor of 5 due to the increase in flushing and reduction in the leakage of phosphate from the sediments when the sediment surface became oxidized. Oxygenation of the sediments did not increase the leakage of toxic metals and organic pollutants. The bacterial community was the first to show changes after the oxygenation, with aerobic bacteria also thriving in the deepwater. The earlier azoic deepwater bottom sediments were colonized by animals. No structural difference between the phytoplankton communities in the By Fjord and the adjacent Havsten Fjord, with oxygenated deepwater, could be detected during the experiment. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s13280-014-0524-9) contains supplementary material, which is available to authorized users.
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spelling pubmed-42933612015-01-16 An Experiment with Forced Oxygenation of the Deepwater of the Anoxic By Fjord, Western Sweden Stigebrandt, Anders Liljebladh, Bengt de Brabandere, Loreto Forth, Michael Granmo, Åke Hall, Per Hammar, Jonatan Hansson, Daniel Kononets, Mikhail Magnusson, Marina Norén, Fredrik Rahm, Lars Treusch, Alexander H. Viktorsson, Lena Ambio Report In a 2.5-year-long environmental engineering experiment in the By Fjord, surface water was pumped into the deepwater where the frequency of deepwater renewals increased by a factor of 10. During the experiment, the deepwater became long-term oxic, and nitrate became the dominating dissolved inorganic nitrogen component. The amount of phosphate in the water column decreased by a factor of 5 due to the increase in flushing and reduction in the leakage of phosphate from the sediments when the sediment surface became oxidized. Oxygenation of the sediments did not increase the leakage of toxic metals and organic pollutants. The bacterial community was the first to show changes after the oxygenation, with aerobic bacteria also thriving in the deepwater. The earlier azoic deepwater bottom sediments were colonized by animals. No structural difference between the phytoplankton communities in the By Fjord and the adjacent Havsten Fjord, with oxygenated deepwater, could be detected during the experiment. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s13280-014-0524-9) contains supplementary material, which is available to authorized users. Springer Netherlands 2014-05-01 2015-02 /pmc/articles/PMC4293361/ /pubmed/24789509 http://dx.doi.org/10.1007/s13280-014-0524-9 Text en © The Author(s) 2014 https://creativecommons.org/licenses/by/4.0/ Open AccessThis article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.
spellingShingle Report
Stigebrandt, Anders
Liljebladh, Bengt
de Brabandere, Loreto
Forth, Michael
Granmo, Åke
Hall, Per
Hammar, Jonatan
Hansson, Daniel
Kononets, Mikhail
Magnusson, Marina
Norén, Fredrik
Rahm, Lars
Treusch, Alexander H.
Viktorsson, Lena
An Experiment with Forced Oxygenation of the Deepwater of the Anoxic By Fjord, Western Sweden
title An Experiment with Forced Oxygenation of the Deepwater of the Anoxic By Fjord, Western Sweden
title_full An Experiment with Forced Oxygenation of the Deepwater of the Anoxic By Fjord, Western Sweden
title_fullStr An Experiment with Forced Oxygenation of the Deepwater of the Anoxic By Fjord, Western Sweden
title_full_unstemmed An Experiment with Forced Oxygenation of the Deepwater of the Anoxic By Fjord, Western Sweden
title_short An Experiment with Forced Oxygenation of the Deepwater of the Anoxic By Fjord, Western Sweden
title_sort experiment with forced oxygenation of the deepwater of the anoxic by fjord, western sweden
topic Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4293361/
https://www.ncbi.nlm.nih.gov/pubmed/24789509
http://dx.doi.org/10.1007/s13280-014-0524-9
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