Prokaryotic assemblages in suspended and subglacial sediments within a glacierized catchment on Qeqertarsuaq (Disko Island), west Greenland

FEMS Microbiology Ecology
Jakub D ZarskyMarek Stibal

Abstract

Microbes transported by glacial meltwater streams are thought to be a product of passive dispersal from both supra- and subglacial sources, though studies investigating the origins of these assemblages are scarce. Here, we conducted a survey within a large catchment containing multiple glaciers on Qeqertarsuaq (Disko Island), west Greenland, to investigate whether meltwater-exported microbial assemblages in suspended sediments differ between glacial meltwater streams, and if they reflect corresponding bulk subglacial and extraglacial sediment communities. Using 16S rRNA gene amplicon sequencing, we found proglacial stream assemblages substantially differ from one another, despite their close spatial proximity. Furthermore, proglacial stream assemblages were composed of greater proportions of Cyanobacteria compared to bulk subglacial sediment communities, dominated by Betaproteobacteria, demonstrating large contributions of meltwater and microbial cells from supraglacial habitats. Corresponding physico-chemical characteristics of meltwater suggest that streams draining smaller glaciers had more equal contributions of both supra- and subglacial inputs compared with the main catchment outlet, aligning with observed changes in asse...Continue Reading

References

Jun 17, 2003·International Journal of Systematic and Evolutionary Microbiology·Kevin T FinneranDerek R Lovley
Apr 21, 2009·Methods in Molecular Biology·Kazutaka KatohHiroyuki Toh
Jan 14, 2012·Extremophiles : Life Under Extreme Conditions·Marek StibalAlexandre M Anesio
Aug 30, 2012·Nature Methods·Caroline A SchneiderKevin W Eliceiri
Nov 19, 2014·Environmental Microbiology Reports·Marek StibalCarsten S Jacobsen
Apr 30, 2015·Environmental Microbiology·Domenico SavioAlexander Eiler
Dec 23, 2015·FEMS Microbiology Ecology·Karen A CameronCarsten S Jacobsen
Aug 5, 2016·Environmental Microbiology·Karen A CameronCarsten S Jacobsen
Jan 11, 2017·Microbial Ecology·Karen A CameronCarsten S Jacobsen
Jan 26, 2017·Nature Communications·Jon R HawkingsRob Raiswell

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Citations

Jul 17, 2018·FEMS Microbiology Ecology·Marek StibalMax M Häggblom
May 10, 2020·Environmental Microbiology·Karen A CameronCarsten Suhr Jacobsen
Oct 11, 2019·FEMS Microbiology Ecology·Maria Antonia CavacoJosh David Neufeld
Sep 20, 2019·Proceedings. Mathematical, Physical, and Engineering Sciences·Jade E HattonJakub D Žárský
May 1, 2020·Frontiers in Microbiology·Tyler J KohlerMarek Stibal

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