Articles | Volume 13, issue 3
https://doi.org/10.5194/bg-13-659-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-659-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
03 Feb 2016
Research article |
| 03 Feb 2016
Controls on microalgal community structures in cryoconite holes upon high-Arctic glaciers, Svalbard
T. R. Vonnahme
Centre for Polar Ecology, Faculty of Science, University
of South Bohemia, České Budějovice, Czech
Republic
University of Konstanz, Constance, Germany
now at: Max Planck Institute for Marine Microbiology,
Bremen, Germany
M. Devetter
Centre for Polar Ecology, Faculty of Science, University
of South Bohemia, České Budějovice, Czech
Republic
Biology Centre of the Academy of Science of the Czech
Republic, Institute of Soil Biology, České Budějovice, Czech
Republic
J. D. Žárský
Centre for Polar Ecology, Faculty of Science, University
of South Bohemia, České Budějovice, Czech
Republic
Department of Ecology, Charles University, Prague, Czech
Republic
M. Šabacká
Centre for Polar Ecology, Faculty of Science, University
of South Bohemia, České Budějovice, Czech
Republic
British Antarctic Survey, Cambridge, UK
J. Elster
CORRESPONDING AUTHOR
Centre for Polar Ecology, Faculty of Science, University
of South Bohemia, České Budějovice, Czech
Republic
Institute of Botany, Academy of the Science of the Czech
Republic, Třeboň, Czech Republic
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Short summary
The diversity of microalgae and cyanobacteria in cryoconites on three high-Arctic glaciers was investigated. Possible bottom-up controls via nutrient limitation, wind dispersal, and hydrological stability were measured. Grazer populations were quantified to estimate the effect of top-down controls. Nutrient limitation appeared to be the most important control on the diversity and competition outcomes of microalgae and cyanobacteria.
The diversity of microalgae and cyanobacteria in cryoconites on three high-Arctic glaciers was...
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