Prosiectau fesul blwyddyn
Crynodeb
During the summer ablation season, Arctic glacier surfaces host a wealth of microbial life. Here, the phototroph communities on the ablating bare-ice surface of three valley glaciers on Brøggerhalvøya, Svalbard were investigated. The communities mainly comprised seven taxa of green algae and cyanobacteria, which have been commonly reported on Arctic glaciers. Although the geographical and glaciological settings of the three studied glaciers are similar, there were differences in total phototroph biomass. The community structure was also distinctive among the glaciers: high dominance of a single taxon of green algae (Ancylonema nordenskiöldii) for Midtre Lovénbreen, abundant cyanobacteria for Austre Brøggerbreen, and diverse green algae for Pedersenbreen. The major soluble ions in the surface ice showed that there was no significant difference in meltwater nutrient conditions between the glaciers, but there were lower concentrations of mineral-derived ions on Midtre Lovénbreen. Consequently, the glacier-specific mineral loading and surface hydrology are inferred to explain the contrast in bare ice algal communities between the glaciers. We hypothesize that local, glacier-specific conditions affect algal communities and the associated influences on carbon cycling and ice-surface albedo.
Iaith wreiddiol | Saesneg |
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Rhif yr erthygl | 4 |
Cyfnodolyn | Frontiers in Earth Science |
Cyfrol | 7 |
Dynodwyr Gwrthrych Digidol (DOIs) | |
Statws | Cyhoeddwyd - 01 Chwef 2019 |
Ôl bys
Gweld gwybodaeth am bynciau ymchwil 'Variations in phototroph communities on the ablating bare-ice surface of glaciers on Brøggerhalvøya, Svalbard'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.Prosiectau
- 1 Wedi Gorffen
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Black and Bloom; variation in the albedo of the Greenland Ice Sheet as a result of interactionns between microbes and particulates
Irvine-Fynn, T. (Prif Ymchwilydd)
Natural Environment Research Council
01 Gorff 2015 → 30 Medi 2021
Prosiect: Ymchwil a ariannwyd yn allanol