Articles | Volume 11, issue 22
Biogeosciences, 11, 6323–6339, 2014
https://doi.org/10.5194/bg-11-6323-2014

Special issue: Boknis Eck Time Series Station (SW Baltic Sea)

Biogeosciences, 11, 6323–6339, 2014
https://doi.org/10.5194/bg-11-6323-2014

Research article 24 Nov 2014

Research article | 24 Nov 2014

Long-term trends at the Boknis Eck time series station (Baltic Sea), 1957–2013: does climate change counteract the decline in eutrophication?

S. T. Lennartz et al.

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Cited articles

Babenerd, B.: Increasing oxygen deficiency in Kiel Bay (Western Baltic) – a paradigm of progressing coastal eutrophication, Meeresforschung, 30, 121–140, 1991.
BACC: Assessment of Climate Change for the Baltic Sea Basin, Springer, 2008.
Bange, H. W., Bergmann, K., Hansen, H. P., Kock, A., Koppe, R., Malien, F., and Ostrau, C.: Dissolved methane during hypoxic events at the Boknis Eck time series station (Eckernförde Bay, SW Baltic Sea), Biogeosciences, 7, 1279–1284, https://doi.org/10.5194/bg-7-1279-2010, 2010.
Bange, H. W., Hansen, H.-P., Malien, F., Lass, K., Dale, A., Karstensen, J., Petereit, C., and Friedrichs, G.: Boknis Eck Time Series Station (SW Baltic Sea): Measurements from 1957 to 2010, LOICZ-Affiliated Activities, 2011.
Bendtsen, J. and Hansen, J. L. S.: Effects of global warming on hypoxia in the Baltic Sea–North Sea transition zone, Ecol. Model., 264, 17–26, 2013.
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A time series of nine oceanic parameters from the coastal time series station Boknis Eck (BE, southwestern Baltic Sea) in the period of 1957-2013 is analysed with respect to seasonal cycles and long-term trends. Most striking was a paradoxical decreasing trend in oxygen with a simultaneous decline in eutrophication. Possible reasons for this paradox, e.g. processes related to warming temperatures such as increased decomposition of organic matter or altered ventilation, are discussed.
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