Abstract
The diatom biostratigraphy of the topmost sediment meter of Rotsee, Central Switzerland, is characterized by a major change fromCyclotella comensis-dominated toStephanodiscus hantzschii/S. parvus-dominated assemblages. A comparison between old phytoplankton samples, taken between 1910–1930, and subfossil diatom assemblages is used for dating the upper 35 cm of the core. There is evidence that the change in dominant diatoms occurred in 1919/20, thus before the opening of an artificial inlet in 1922, and is due to increasing eutrophication. Furthermore, the sedimentary carbonate content can be used as a good indicator for past phytoplankton productivity in Rotsee.
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Lotter, A.F. Subfossil and modern diatom plankton and the paleolimnology of Rotsee (Switzerland) since 1850. Aquatic Science 51, 338–350 (1989). https://doi.org/10.1007/BF00877176
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DOI: https://doi.org/10.1007/BF00877176