Morphological diversity of microalgae and Cyanobacteria of cryoconite holes in Northern Victoria Land, Antarctica
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10501376" target="_blank" >RIV/00216208:11310/25:10501376 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Ukyp.BI2km" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Ukyp.BI2km</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/jog.2025.12" target="_blank" >10.1017/jog.2025.12</a>
Alternative languages
Result language
angličtina
Original language name
Morphological diversity of microalgae and Cyanobacteria of cryoconite holes in Northern Victoria Land, Antarctica
Original language description
Cryoconite holes are supraglacial depressions containing water and microbe-mineral aggregates. Their autotrophic component plays a central role in reducing the albedo of glaciers and could contribute to sustaining the cryoconite food web. However, knowledge of its diversity is still limited, especially in Antarctica. Moreover, the study of cryoconite microalgae is challenging due to the limitations of molecular approaches, such as incomplete genetic databases and the semiquantitative nature of the data. Furthermore, it is equally difficult to examine the development of microalgae in sediment by using standard counting methods for water-living organisms. By using an adaptation of the high-speed density gradient centrifugation method, we provide a comprehensive description of the phenotypic characteristics, abundance and community structure of microalgae and Cyanobacteria in different cryoconite holes located in different glaciers of Northern Victoria Land, East Antarctica. We described 36 morphotypes belonging to Cyanobacteria, green algae and diatoms, revealing that cryoconite holes encompass a remarkably high diversity of photoautotrophs. The adapted protocol enabled the application of a standard microscopic approach, which provided crucial and comparable information on morphological characteristics, biovolume and community organization from a unique environment. The study poses the basis for the taxonomy of photoautotrophs as well as their diversity and distribution in cryoconite habitats.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Glaciology
ISSN
0022-1430
e-ISSN
1727-5652
Volume of the periodical
71
Issue of the periodical within the volume
March
Country of publishing house
GB - UNITED KINGDOM
Number of pages
22
Pages from-to
e37
UT code for WoS article
001473375900001
EID of the result in the Scopus database
2-s2.0-105003923729