Estimation of Spatiotemporal Transformations of Lake Ecosystems by the Method of Diatom Analysis

摘要

Diatom analysis is regarded as one of the most informative bioindication methods for assessment of transformations occurring in freshwater ecosystems. Diatom algae (class Bacillariophyceae, division Ochrophyta) are a widespread group of algae that iswell preserved in sediments owing to the silica frus-tules. Their abundance and species composition strongly depend on the physical and chemical characteristics of aqueous medium, in which they are ubiquitous.