The New form of Diatom Assemblages Analysis of the Lake Imandra
https://doi.org/10.31857/S0869607121060045
Abstract
Samples of surface sediments and sediment columns from various sections of the Lake Imandra were collected for diatom analysis. Histograms of diatom complexes species proportions were constructed. Two types of graphs of the natural (undisturbed) diatom complexes structure were distinguished. The first one, in its outlines, is close to an exponential dependence, and the second one has a certain similarity with the logistic dependence. Both types of histograms change their shape when a negative external influence takes place. The degree of their distortion reflects the overall level of anthropogenic load on a particular section of the water area. The third type of graphs — linear graphs was distinguished for the displaced and redeposited diatom complexes. The research allowed to identify the lake’s water areas where paleoreconstructions are the most efficient. Water areas where the interpretation of the obtained results is difficult, and paleoreconstructions are not recommended, have been identified as well.
About the Author
L. V. Razumovsky
Water Problems Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
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Review
For citations:
Razumovsky L.V. The New form of Diatom Assemblages Analysis of the Lake Imandra. Proceedings of the Russian Geographical Society. 2021;153(6):65-72. (In Russ.) https://doi.org/10.31857/S0869607121060045
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