Abstract
Species composition and density of cladoceran populations changed in Lakes Zürich, St. Mortiz and Baldegg as human populations increased in these watersheds. Lake Zürich sediments became annually laminated in the 1890's as a result of increased organic input as the size of the cities surrounding the lake grew. At the same time, the Bosmina species changed from a oligotrophic form (longispina) to a eutrophic form (longirostris). An increase in Daphnia spp. populations also occurred at this time in the lake's history. Bosmina longispina reappeared in the lake in 1965 as the lake's trophic status changed from eutrophic to mesotrophic due to effective sewage treatment facilities. Annual laminations appear in the Lake St. Moritz sediments about 1910. Shortly thereafter, a shift from B. longispina to B. longirostris occurred. This change in trophic status is associated with increased tourism in the area. Lake Baldegg sediments also show annual laminations beginning in 1885 and a similar shift in the Bosmina species. Other cladoceran remains were too scarce to be useful in interpreting the histories of these lakes.
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References
Borner, L., 1972. Die Bodenfauna des St. Moritzer-See. Arch. Hydrobiol. 13: 1–91.
Dietlicher, K., 1974. The water quality of the lakes of Zürich and Walensee — an essay of description. Zurich Waterworks, Zurich. 40 pp.
Frey, D. G., 1955. Längsee: a history of meromixis. Mem. Ist. ital. Idrobiol. Suppl. 8: 141–164.
Frey, D. G., 1961. Developmental history of Schleinsee. Verh. int. Ver. Limnol. 10: 476–488.
Frey, D. G., 1976. Interpretation of Quaternary paleoecology from Cladocera and midges, and prognosis regarding usability of other organisms. J. Zool. 54: 2208–2226.
Frey, D. G., 1979. Cladocera analysis. In: Berglund, B. E. (Ed.). Project Guide to Paleohydrological Changes in the Temperate Zone in the last 15 000 years, Subproject B. Lake and Mire environments. IGCP Project 158 vol. II chapt. 10.10. Univ. Lund, Sweden: 227–257.
Kiefer, F., 1960. Der Bodensee in Gefahr! Neuere Ergebnisse aus Untersuchungen im Pelagial des Bodensees. Umschau 60: 65–68.
Messikommer, E., 1965. Materialien zur Algenkunde des Oberengadins Schweiz. Z. Hydrol. 27: 115–162.
Nipkow, F., 1920. Vorläufige Mitteilungen über Untersuchungen des Schlammabsatzes im Zürichsee. Schweiz. Z. Hydrol. 1: 100–122.
Patalas, J. & Patalas, K., 1966. The crustacean plankton communities in Polish lakes. Verh. int. Ver. Limnol. 16: 204–215.
Schmassman, W., 1920. Die Bodenfauna hochalpiner Seen. Arch. Hydrobiol. Suppl. 3: 1–105.
Schmassman, W. & Schmassman, H. J., 1948. Chemische Untersuchungen im St. Moritzersee. Schweiz. Z. Hydrol. 10: 21–35.
Taft, C. E., 1978. A mounting medium for fresh-water plankton. Trans. am. micros. Soc. 97: 263.
Thomas, E. A. & Märki, E., 1949. Der heutige Zustand des Zürichersees. Verh. int. Ver. Limnol. 10: 476–488.
Züllig, H., 1981. On the use of carotinoid stratigraphy in lake sediments for detecting past developments of phytoplankton. Limnol. Oceanogr. 26: 970–976.
Züllig, H., 1982. Stratigraphische Carotinoidbestimmungen an Bohrkernen aus zehn Schweizerseen zur Erkundung früherer Planktonentfaltungen. Schweiz. Z. Hydrol. 44: 1–98.
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Boucherle, M.M., Züllig, H. Cladoceran remains as evidence of change in trophic state in three Swiss lakes. Hydrobiologia 103, 141–146 (1983). https://doi.org/10.1007/BF00028442
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DOI: https://doi.org/10.1007/BF00028442