Fig. 4: Time series of δ2H / δ18O values in water samples collected between 24th March 2020 and 9th March 2021 at Biological Station Zingst (Zingster Stream; sampling point E; Fig. 2b). Error bars: standard deviation of replicate measurements. Water temperature and salinity derived from long-term daily monitoring program (Biol. Station Zingst). Water level at the bodden outflow towards the Baltic Sea at Barhöft (WSV, 2022): thick black line indicate 5-point average.. Riverine discharge of Recknitz and Barthe (STALU, 2022) .