The environmental status of the Baltic Sea in the 1940s, today, and in the future

Article Abstract:

The Baltic Sea, its environmental status and its ecosystem from the 1940s to today and looking ahead are discussed with attention to eutrophication, water transparency and effects on bladderwrack, a seaweed. Adequate knowledge of the ecosystem and elimination of toxics is available to guide in restoration of the environment of the sea, but large societal changes, especially in transportation, industry and agriculture, would be necessary to eliminate pollution, and political issues are being given higher priority.

Finland, Lithuania, Scandinavia, Poland, Latvia, Russia, Manufacturing industry, Manufacturing industries, Agricultural industry, Transportation industry, Political aspects, Pollution, Food chains (Ecology), Food chains, Baltic States, Marine ecology, North Sea, Coastal ecology, Marine algae, Baltic Sea, Northern Europe

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Seasonal variations of DDT compounds and PCB in a eutrophic and an oligotrophic lake in relation to algal biomass

Article Abstract:

Research indicates that eutrophic lakes are less likely to demonstrate biomass dilution than oligotrophic lakes, but are more likely to contain higher levels of polychlorinated biphenyls (PCBs) in sedimenting matter. Eutrophic lakes are also more likely to have higher settling fluxes of PCB and particulate matter, while oligotrophic lakes reveal a greater load of DDT in deep sediment.

Water bloom, Algal blooms, Biomass

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The turnover of metals in a eutrophic and an oligotrophic lake in Sweden

Article Abstract:

Research on two bodies of water in Sweden indicate that eutrophic lakes demonstrate greater fluxes of metals than oligotrophic lakes, which may be explained by different geology, pH, and biomass. Water circulation and resuspension of particles in both types of lakes were found to enhance the dispersal of pollutants, along with metal sulfide solubilization.

Soil pollution, Water pollution, Soils, Heavy metals

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