Articles | Volume 16, issue 19
https://doi.org/10.5194/bg-16-3835-2019
https://doi.org/10.5194/bg-16-3835-2019
Research article
 | 
07 Oct 2019
Research article |  | 07 Oct 2019

Rapid environmental responses to climate-induced hydrographic changes in the Baltic Sea entrance

Laurie M. Charrieau, Karl Ljung, Frederik Schenk, Ute Daewel, Emma Kritzberg, and Helena L. Filipsson

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Latest update: 04 Feb 2025
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Short summary
We reconstructed environmental changes in the Öresund during the last 200 years, using foraminifera (microfossils), sediment, and climate data. Five zones were identified, reflecting oxygen, salinity, food content, and pollution levels for each period. The largest changes occurred ~ 1950, towards stronger currents. The foraminifera responded quickly (< 10 years) to the changes. Moreover, they did not rebound when the system returned to the previous pattern, but displayed a new equilibrium state.
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