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EN
The article reviews of the state of investigations concerning the threat of chemical warfare agents (CWA) dumped in the Baltic Sea to the health of people making use of the sea. The paper presents the types and quantities of chemical munitions dumped in the Polish sector of the Baltic Sea, the location of dumping sites and localities where accidental injuries to people have taken place. The results of the HELCOM ad hoc Working Group on Dumped War Gas and Ammunition in the Polish Economic Zone are also reviewed. The approximate condition of the dumped CWA and their status on the sea floor are discussed. The Polish studies on the deactivation of CWA are summarised.
EN
This paper presents the results of research on the influence of war gas dumped in the Baltic Sea on people who live and work in this area.The research was based on accessible information and literature.
EN
The abundance of heterotrophic bacteria in the surface microlayer and subsurface water as well as the rates of processes of organic matter decomposition by multi-species populations of bacterioneuston and bacterioplankton of the Southern Baltic have been determined.The number of heterotrophic bacteria in the surface microlayers was found to be 2 to 11 times greater than in the surface water.The significant differences in the rate of bacterial destruction of individual organic compounds have been shown.It has been also found out that simple organic compounds were mineralized more actively by bacterioneuston while macromolecules by planktonic bacteria.
EN
The rate of organic matter decomposition, the abundance of heterotrophic bacteria, production of bacterial biomass and coefficients of heterotrophic activity of bacterial microflora have been determined for three estuarine lakes.Processes of organic matter destructions, biomass production as well as heterotrophic activity of bacteria displayed marked seasonal fluctuations.The highest rate of the processes studied was observed in heterotrophic lake Jamno and considerably lower in eutrophic lakes Lebsko and Gardno.The data gathered in the course of three-year-long research programme revealed the increasing rate of eutrophication processes in the aquatic basins investigated.
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