Role of the Oder estuary (southern Baltic) in transformation of the riverine nutrient loads

Efficiency of the coastal filter: Nitrogen and phosphorus removal in the Baltic Sea

“…The variation among coastal (Nixon 1995). For example, lagoon systems in this study have high nitrogen loading, limited exchange with the coastal sea and relatively low discharge to area ratio (Pastuszak et al 2005; Aleksandrov 2010), enabling high denitrification rates. In addition to the large-scale spatial variation, there were significant random variations (i.e., variability that cannot be determined) in the denitrification rates (Supporting Information Table S4).…”

“…The variation among coastal ecosystems can be attributed to multiple factors, such as their geomorphological characteristics (depth, exchange with open sea; Dürr et al ), the ratio between freshwater flow and estuarine area (Jickells et al ), residence time and loading from terrestrial system (Nixon ). For example, lagoon systems in this study have high nitrogen loading, limited exchange with the coastal sea and relatively low discharge to area ratio (Pastuszak et al ; Aleksandrov ), enabling high denitrification rates.…”

“…Some coastal systems had a low number of observations (< 10), but for the majority of coastal systems 10-100 denitrification measurements were available. The highest average denitrification rate was measured in the Oder (Szczecin) Lagoon (5246 lmol N m 22 d 21 ); a system characterized by high nutrient loadings from the Oder River and narrow opening to the Pomeranian Bay in the southern Baltic Sea (Pastuszak et al 2005). The lowest average denitrification rate was measured in Vallda (32 lmol N m 22 d 21 ); a system in southwestern Sweden with low nitrate concentrations year round and low sediment organic carbon content (Sundb€ ack et al 2000).…”

Changes in condition and in carapace length and width of the Chinese mitten crab (Eriocheir sinensis H. Milne Edwards, 1853) harvested in the Odra River estuary in 1999-2007

“…It is difficult to pinpoint the major factor responsible for the changes, because the Odra estuary -both hydrographically and environmentally -is affected by both the riverine water from the Odra and by sea water intrusions from the Baltic, the net result being frequent variations in salinity, temperature, and flow rate (Pastuszak et al 2005). This also affects changes in the density and biomass of phytoplankton (Gromisz et al 1999), zooplankton (Wrzesińska-Kwiecień, Mackiewicz 1995), and zoobenthos (Kube et al 1997).…”

Managing Eutrophication in the Szczecin (Oder) Lagoon-Development, Present State and Future Perspectives

“…One problem in the Oder River and Szczecin Lagoon system is that coherent GES targets and MAI do not exist (Pastuszak et al, 2003(Pastuszak et al, , 2005Schernewski et al, 2011;Pastuszak and Witek, 2012a,b). For Small Lagoon, nutrient target threshold concentrations calculated by Brockmann et al (2005), were far too ambitious to be reached even with an highflying river basin management (Schernewski et al, 2008(Schernewski et al, , 2012bNausch et al, 2011).…”