Annual Cycle of Freshwater Diatoms in the High Arctic Revealed by Multiparameter Fluorescent Staining

0532153 - BÚ 2021 RIV US eng J - Journal Article
Hejduková, E. - Elster, Josef - Nedbalová, Linda
Annual Cycle of Freshwater Diatoms in the High Arctic Revealed by Multiparameter Fluorescent Staining.
Microbial Ecology. Roč. 80, č. 3 (2020), s. 559-572. ISSN 0095-3628. E-ISSN 1432-184X
Research Infrastructure: CzechPolar2 - 90078
Institutional support: RVO:67985939
Keywords : Diatoms * Lifecycle * Overwintering
OECD category: Ecology
Impact factor: 4.552, year: 2020
Method of publishing: Limited access

Diatoms (Bacillariophyceae) are important primary producers in a wide range of hydro-terrestrial habitats in polar regions that are characterized by many extreme environmental conditions. Nevertheless, how they survive periods of drought and/or freeze remains unknown. A general strategy of microorganisms to overcome adverse conditions is dormancy, but morphologically distinct diatom resting stages are rare. This study aimed to evaluate the annual cycle of freshwater diatoms in the High Arctic (Central Spitsbergen) and provide an insight into their physiological cell status variability. The diversity and viability of diatom cells were studied in samples collected five times at four study sites, tracing the key events for survival (summer vegetative season, autumn dry-freezing, winter freezing, spring melting, summer vegetative season [again]).
Permanent Link: http://hdl.handle.net/11104/0310746