Institute of Carbon Cycles, Helmholtz-Zentrum Hereon, Geesthacht, Germany
Justus E. E. van Beusekom
Institute of Carbon Cycles, Helmholtz-Zentrum Hereon, Geesthacht, Germany
Alexander Bratek
Institute of Carbon Cycles, Helmholtz-Zentrum Hereon, Geesthacht, Germany
Center for Earth System Research and Sustainability, Institute of Geology, Universität Hamburg, Hamburg, Germany
Jana Friedrich
Institute of Carbon Cycles, Helmholtz-Zentrum Hereon, Geesthacht, Germany
Department of Nuclear Sciences and Applications, IAEA Marine Environment Laboratories, International Atomic Energy Agency, 98000 Monaco, Principality of Monaco
Jürgen Möbius
Center for Earth System Research and Sustainability, Institute of Geology, Universität Hamburg, Hamburg, Germany
The North-Western shelf of the Black Sea is substantially influenced by the discharge of nutrients from River Danube. We have sampled the sediment there and measured particulate carbon and nitrogen to reconstruct the variability of nitrogen sources to the NW shelf. Our results demonstrate that the balance of riverine nitrogen input and marine nitrogen fixation is sensitive to climate changes. Nitrogen from human activities is detectable in NW shelf sediment since the 12th century.
The North-Western shelf of the Black Sea is substantially influenced by the discharge of...