Articles | Volume 13, issue 3
Biogeosciences, 13, 659–674, 2016
https://doi.org/10.5194/bg-13-659-2016
Biogeosciences, 13, 659–674, 2016
https://doi.org/10.5194/bg-13-659-2016
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 et al.

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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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