The genus Mallomonas Perty (Chrysophyceae) in Lake Teletskoye phytoplankton: diversity and distribution
UDC 582.261.2(282.256.125)
Abstract
In 2009–2010, 2018–2023, a study of phytoplankton was conducted throughout the water area of Lake Teletskoye and in different hydrological seasons. The composition of the genus Mallomonas from silica-scaled chrysophycean algae, which are an obligatory component of deep and shallow freshwater bodies, was analyzed. A diverse composition of species of the genus Mallomonas was identified in the Lake Teletskoye phytoplankton – 21 species (24 species, varieties and forms, as well as organisms unspecified to the species). The most common species in the lake plankton is Mallomonas alpina, which is noted both during the open water period and under the ice in winter. M. elongata, M. tonsurata and M. crassisquama are often found during the open water period. Many species were noted along the entire lake in different parts of its water area, both in the littoral and pelagic zones, in the seasonal aspect – during the open water period. The southern part of the lake is the most original in terms of the composition of the species identified due to the presence of littoral areas and the small shallow reservoir nearby the lake that is connected with the one during the flood. Most species are noted as rare, which were found at some stations or in some seasons, and singly.
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