KFU. Card publication. Trends in devel-opment of diatom flora from sub-recent lake sediments of the Lake Bolshoy Kharbey

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FEDERAL UNIVERSITY

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TRENDS IN DEVEL-OPMENT OF DIATOM FLORA FROM SUB-RECENT LAKE SEDIMENTS OF THE LAKE BOLSHOY KHARBEY

Form of presentation

Articles in Russian journals and collections

Year of publication

2019

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Authors, employees of KFU

Nazarova Larisa Borisovna, author

Palagushkina Olga Viktorovna, author

Frolova Larisa Aleksandrovna, author

Bibliographic description in the original language

Olga Palagushkina, Larisa Nazarova, Larisa Frolova Trends in development of diatom flora from sub-recent lake sediments of the Lake Bolshoy Kharbey (Bolshezemelskaya tundra, Russia).

Annotation

We studied diatom assemblages of a proglacial arctic lake Bolshoy Kharbey (Bolshezemelskaya tundra, Russian Arctic) from a short sediments core covering last ca 200 years. In total, 121 taxa from 2 classes, 5 orders, 18 families, and 50 genera were identified. The diatom flora included species with mainly cosmopolitan distribution. Alkaliphilic benthic diatoms preferring standing - flowing waters, indifferent to salinity and moderate temperature conditions dominated the assemblages. Main changes in diatom assemblages took place at ca 1870 and 1980. After 1870, which can be attributed to the end of the Little Ice Age, the species richness rose, especially of planktonic centric and small penate diatoms. Rise of diatom diversity took place most probably in response to climate warming, related to it prolongation of the growing season and period of open water. A negative trend in the Evenness of the diatom assemblages during the last decades can be seen as an early-warning signal indicating a decrease of stability of the lake ecosystem.

Keywords

diatoms, Lake Bolshoy Kharbei, Russian Arctic, climate change

The name of the journal

BIOLOGICAL COMMUNICATIONS

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=215103&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Nazarova Larisa Borisovna	ru_RU
dc.contributor.author	Palagushkina Olga Viktorovna	ru_RU
dc.contributor.author	Frolova Larisa Aleksandrovna	ru_RU
dc.date.accessioned	2019-01-01T00:00:00Z	ru_RU
dc.date.available	2019-01-01T00:00:00Z	ru_RU
dc.date.issued	2019	ru_RU
dc.identifier.citation	Olga Palagushkina, Larisa Nazarova, Larisa Frolova Trends in development of diatom flora from sub-recent lake sediments of the Lake Bolshoy Kharbey (Bolshezemelskaya tundra, Russia).	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=215103&p_lang=2	ru_RU
dc.description.abstract	BIOLOGICAL COMMUNICATIONS	ru_RU
dc.description.abstract	We studied diatom assemblages of a proglacial arctic lake Bolshoy Kharbey (Bolshezemelskaya tundra, Russian Arctic) from a short sediments core covering last ca 200 years. In total, 121 taxa from 2 classes, 5 orders, 18 families, and 50 genera were identified. The diatom flora included species with mainly cosmopolitan distribution. Alkaliphilic benthic diatoms preferring standing - flowing waters, indifferent to salinity and moderate temperature conditions dominated the assemblages. Main changes in diatom assemblages took place at ca 1870 and 1980. After 1870, which can be attributed to the end of the Little Ice Age, the species richness rose, especially of planktonic centric and small penate diatoms. Rise of diatom diversity took place most probably in response to climate warming, related to it prolongation of the growing season and period of open water. A negative trend in the Evenness of the diatom assemblages during the last decades can be seen as an early-warning signal indicating a decrease of stability of the lake ecosystem.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	diatoms	ru_RU
dc.subject	Lake Bolshoy Kharbei	ru_RU
dc.subject	Russian Arctic	ru_RU
dc.subject	climate change	ru_RU
dc.title	Trends in devel-opment of diatom flora from sub-recent lake sediments of the Lake Bolshoy Kharbey	ru_RU
dc.type	Articles in Russian journals and collections	ru_RU