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

• DOI: 10.1007/s13280-014-0524-9
• Publication Date: 2014-04-30T09:49:48Z
• Authors: Anders Stigebrandt; Bengt Liljebladh; Loreto de Brabandere; Michael Forth; Åke Granmo; Per Hall; Jonatan Hammar; Daniel Hansson; Mikhail Kononets; Marina Magnusson; Fredrik Norén; Lars Rahm; Alexander H. Treusch; Lena Viktorsson
• Keywords: Fjord

In a 2.5-year-long environmental engineering experiment in the By Fjord, surface water was pumped into deepwater where frequency of renewals increased by factor 10. During experiment, became long-term oxic, and nitrate dominating dissolved inorganic nitrogen component. The amount phosphate column decreased 5 due to increase flushing reduction leakage from sediments when sediment oxidized. Oxygenation did not toxic metals organic pollutants. bacterial community first show changes after oxygenation, with aerobic bacteria also thriving deepwater. earlier azoic bottom were colonized animals. No structural difference between phytoplankton communities Fjord adjacent Havsten oxygenated deepwater, could be detected during experiment.