Articles | Volume 16, issue 4
Biogeosciences, 16, 927–947, 2019
Biogeosciences, 16, 927–947, 2019

Research article 27 Feb 2019

Research article | 27 Feb 2019

Composition and vertical flux of particulate organic matter to the oxygen minimum zone of the central Baltic Sea: impact of a sporadic North Sea inflow

Carolina Cisternas-Novoa et al.


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Short summary
We investigate the composition and vertical fluxes of POM in two deep basins of the Baltic Sea (GB: Gotland Basin and LD: Landsort Deep). The two basins showed different O2 regimes resulting from the intrusion of oxygen-rich water from the North Sea that ventilated the deep waters in GB, but not in LD. In GB, O2 intrusions lead to a high abundance of manganese oxides that aggregate with POM, altering its composition and vertical flux and contributing to a higher POC transfer efficiency in GB.
Final-revised paper