One: The Historical Background.- 1. The Lake Stechlin area, past and present, and the Lake Stechlin research project.- - Lake Stechlin, Theodor Fontane and the legend of the Red Cock.- - Morphology and morphogenesis of the Lake Stechlin area.- - The plant cover of the Lake Stechlin area.- - Settlement and economy of the Lake Stechlin area.- - The Limnological Laboratory Stechlin and the Lake Stechlin research project.- Two: The Hydrographical, Hydrometeorological and Chemical Background.- 2. The lakes of the Lake Stechlin area: aspects of their morphometry.- 3. The hydrometeorology of the Lake Stechlin area.- - Climatic conditions.- - Water temperature.- - Heat balance components.- - Amount of evaporation.- - Water balance components.- - Light penetration.- 4. The chemical environment.- - The phosphorus budget.- - The carbon budget.- - The nitrogen budget.- - The silicon budget.- - The oxygen budget.- Three: The Biological Background.- 5. The plant communities.- - Aquatic macrophytes in the Lake Stechlin area.- - The microphytobenthos.- - The phytoplankton.- 6. The bacteria.- 7. The invertebrate communities.- - The microzoobenthos.- - The meiozoobenthos.- - The macrozoobenthos.- - The zooplanktonic population.- 8. The vertebrate communities.- - Fish.- - Birds.- 9. Flora and fauna of the Lake Stechlin area. Short comments upon the lists of taxa (appendix).- Four: The Metabolism of The Lake Stechlin Area.- 10. The primary production.- - The primary production of the phytoplankton.- - The primary production of the microphytobenthos.- 11. The secondary production.- 12. Microbial activities at Lake Stechlin.- 13. Sediments and sedimentation.- - Sediments.- - Sedimentation.- 14. Fallen leaves in Lake Stechlin.- 15. The ecosystem Lake Stechlin: the life of the lake.- - The ecological status of Lake Stechlin.- - Calcite precipitation and its role in the life of the lakes.- - The nuclear power plant and its role in the life of Lake Stechlin.- 16. The pelagic zone of Lake Stechlin: an approach to a theoretical model.- 17. Lake Stechlin area and society.- Appendix Taxa observed in the Lake Stechlin area.- Taxonomic index.
`It is both a showcase for East German limnology and a good contribution to comparative limnology.
' The Quarterly Review of Biology, 61 (1986) `... the editor and contributors should be congratulated for what is overall a fascinating, detailed and informative contribution to the limnological literature. ... Between these two covers is a wealth of information about an interesting temperate oligotrophic lake and the environmental impacts of thermal effluents discharged from a nuclear power plant.
' Journal of the Limnological Society of S.A., 11:2 (1986)
On February 1, 1959 the Academy of Sciences of the German Democratic Republic founded the 'Forschungsstelle fUr Limnologie' (now Abteilung Lim nologie des Zentralinstitutes fUr Mikrobiologie und Experimentelle Therapie der Akademie der Wissenschaften der DDR) in Jena and a research laboratory at Lake Stechlin at Neuglobsow near Rheinsberg used as field experimental station. The foundation followed the building of the first nuclear power plant in the G D R ('Kernkraftwerk I der DDR') in the period 1956-66 between Rheinsberg and Furstenberg (Havel). The nuclear power plant is situated between two stratified lakes - Lake Stechlin and Lake Nehmitz - far from any industrialized area in the midst of extensive woodland. The cooling water is taken from Lake Nehmitz and led away into Lake Stechlin, having passed through the cooling system of the plant. The temperature is on average 10° C above the ordinary level. From Lake Stechlin the water is led back to Lake Nehmitz (Schrader 1962). It was expected that the deep, oligotrophic Lake Stechlin would be loaded thermally and materially by the cooling water circuit, meaning that it would be 'eutrophized' , while the slightly eutrophic Lake Nehmitz would be 'oligotrophized'. Thus there would be a solid basis for a research programme on fundamental limnological problems, the solution of which could facilitate problems associated with improvement of conditions in water resources.
One: The Historical Background.- 1. The Lake Stechlin area, past and present, and the Lake Stechlin research project.- Two: The Hydrographical, Hydrometeorological and Chemical Background.- 2. The lakes of the Lake Stechlin area: aspects of their morphometry.- 3. The hydrometeorology of the Lake Stechlin area.- 4. The chemical environment.- Three: The Biological Background.- 5. The plant communities.- 6. The bacteria.- 7. The invertebrate communities.- 8. The vertebrate communities.- 9. Flora and fauna of the Lake Stechlin area. Short comments upon the lists of taxa (appendix).- Four: The Metabolism of The Lake Stechlin Area.- 10. The primary production.- 11. The secondary production.- 12. Microbial activities at Lake Stechlin.- 13. Sediments and sedimentation.- 14. Fallen leaves in Lake Stechlin.- 15. The ecosystem Lake Stechlin: the life of the lake.- 16. The pelagic zone of Lake Stechlin: an approach to a theoretical model.- 17. Lake Stechlin area and society.- Appendix Taxa observed in the Lake Stechlin area.- Taxonomic index.
`It is both a showcase for East German limnology and a good contribution to comparative limnology.
' The Quarterly Review of Biology, 61 (1986) `... the editor and contributors should be congratulated for what is overall a fascinating, detailed and informative contribution to the limnological literature. ... Between these two covers is a wealth of information about an interesting temperate oligotrophic lake and the environmental impacts of thermal effluents discharged from a nuclear power plant.
' Journal of the Limnological Society of S.A., 11:2 (1986)
Inhaltsverzeichnis
One: The Historical Background.- 1. The Lake Stechlin area, past and present, and the Lake Stechlin research project.- - Lake Stechlin, Theodor Fontane and the legend of the Red Cock.- - Morphology and morphogenesis of the Lake Stechlin area.- - The plant cover of the Lake Stechlin area.- - Settlement and economy of the Lake Stechlin area.- - The Limnological Laboratory Stechlin and the Lake Stechlin research project.- Two: The Hydrographical, Hydrometeorological and Chemical Background.- 2. The lakes of the Lake Stechlin area: aspects of their morphometry.- 3. The hydrometeorology of the Lake Stechlin area.- - Climatic conditions.- - Water temperature.- - Heat balance components.- - Amount of evaporation.- - Water balance components.- - Light penetration.- 4. The chemical environment.- - The phosphorus budget.- - The carbon budget.- - The nitrogen budget.- - The silicon budget.- - The oxygen budget.- Three: The Biological Background.- 5. The plant communities.- - Aquatic macrophytes in the Lake Stechlin area.- - The microphytobenthos.- - The phytoplankton.- 6. The bacteria.- 7. The invertebrate communities.- - The microzoobenthos.- - The meiozoobenthos.- - The macrozoobenthos.- - The zooplanktonic population.- 8. The vertebrate communities.- - Fish.- - Birds.- 9. Flora and fauna of the Lake Stechlin area. Short comments upon the lists of taxa (appendix).- Four: The Metabolism of The Lake Stechlin Area.- 10. The primary production.- - The primary production of the phytoplankton.- - The primary production of the microphytobenthos.- 11. The secondary production.- 12. Microbial activities at Lake Stechlin.- 13. Sediments and sedimentation.- - Sediments.- - Sedimentation.- 14. Fallen leaves in Lake Stechlin.- 15. The ecosystem Lake Stechlin: the life of the lake.- - The ecological status of Lake Stechlin.- - Calcite precipitation and its role in the life of the lakes.- - The nuclear power plant and its role in the life of Lake Stechlin.- 16. The pelagic zone of Lake Stechlin: an approach to a theoretical model.- 17. Lake Stechlin area and society.- Appendix Taxa observed in the Lake Stechlin area.- Taxonomic index.
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