hishes as radionuclide bioindicators in the area of Leningrad nuclear power plant (Gulf of Finland, Baltic Sea)
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Seasonal changes of 137Cs in benthic plants from the southern Baltic Sea
137Cs activity concentrations were determined in samples of macrophytes Polysiphonia fucoides (red algae) and Zostera marina (vascular plant) collected during the entire vegetation season in the Gulf of Gdańsk in the southern Baltic Sea. The measurements showed considerable seasonality of 137Cs activity in both species; an increase of cesium concentrations was observed from spring to autumn wit...
متن کاملthe chernobyl accident and the Baltic sea
The impact of the radioactive fallout caused by the accident at the Chernobyl NPP on the Baltic Sea is discussed in this paper. The fallout from Chernobyl was very unevenly distributed in the drainage area of the Baltic Sea; the Bothnian Sea and the eastern part of the Gulf of Finland received most of the deposition. This was reflected in the activity concentrations of the main fallout nuclides...
متن کاملhorizontal and vertical distribution of biogenic silica in coastal and profundal sediments of the Gulf of Finland (northeastern Baltic sea)
We studied the distribution of biogenic silica (BSi) and other potentially bio-available Si pools (NaCl-, NaBDand NaOH-extractable Si) in short (0–25 cm) sediment cores from estuarine, coastal and open-sea areas in the Gulf of Finland (northeastern Baltic Sea). The BSi pool (150–1200 μmol g–1 DM, dry matter) was the largest potentially bio-available Si pool. In a part of the studied area, the c...
متن کاملCyanobacteria blooms in the Gulf of Finland triggered by saltwater inflow into the Baltic Sea
In the 1980s and 1990s prior to 1995, massive blooms of the diazotrophic cyanobacterium Nodularia spumigena occurred in the Baltic Sea Proper but never extended into the central and eastern Gulf of Finland. The absence of nitrogen-fixing cyanobacteria blooms in parts of the Baltic Sea with a high N:P ratio (e.g. Gulf of Finland) has been explained by their reduced competitive advantage in condi...
متن کاملSearching Efficient Protection Strategies for the Eutrophied Gulf of Finland: The Combined Use of One-Dimensional and Three- Dimensional Modeling in Assessing Long-Term State Scenarios with High Spatial Resolution
An ?1 experiment combining the use of two ecosystem models was conducted to search for effective protection strategies for the Gulf of Finland (Baltic Sea). Reference and scenario simulations were first run with a onedimensional (1D) model for seven main basins of the entire Baltic Sea until steady state was achieved. The obtained basinwise distributions of inorganic nitrogen (N) and phosphorus...
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تاریخ انتشار 2009