Biogeosciences
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Articles | Volume 13, issue 3
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.
https://doi.org/10.5194/bg-13-659-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 13, issue 3
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, M. Devetter, J. D. Žárský, M. Šabacká, and J. Elster

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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.
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