Barbara Deutsch

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Over a period of 17 months, variations in δ15N and δ18O values in drainage water nitrate from two collector- drain outlets were investigated. Both fields were conventionally farmed. One field was 2.5 ha (outlet 1) and the other 15 ha (outlet 2) in size; each received similar N amounts per hectare during fertilizer application. In tile drain 1, the δ15N-NO3(More)
The macroalgae species Fucus vesiculosus (Phaeophyta), Polysiphonia sp., and Ceramium rubrum (Rhodophyta) originally grown at an unpolluted brackish site of the southern Baltic Sea were incubated for 10 and 14 days at 12 stations along a salinity gradient in a highly polluted estuary. We have expected an adaptation of the initially low delta15N values to(More)
During a 9-day Lagrangian sampling campaign along the free-flowing section of the Elbe River in July 2005, water from the river as well as from major tributaries and sewage treatment plants was sampled to investigate major nitrogen transformation processes, focussing on denitrification and N-assimilation by phytoplankton. Samples were analysed for(More)
Nitrogen (N) retention and transformation in the Szczecin Lagoon, southern Baltic Sea, were studied by means of budget calculations and stable isotope data of dissolved and particulate matter. Two stations, one located at the main outlet of the lagoon (Swina Strait) and the other 100 km to the south, on the Oder River (Widuchowa), were sampled biweekly over(More)
The processing of terrestrial dissolved organic matter (DOM) in coastal shelf seas is an important part of the global carbon cycle, yet, it is still not well understood. One of the largest brackish shelf seas, the Baltic Sea in northern Europe, is characterized by high freshwater input from sub-arctic rivers and limited water exchange with the Atlantic(More)
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