Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F17%3A10360625" target="_blank" >RIV/00216208:11310/17:10360625 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s00248-016-0926-2" target="_blank" >http://dx.doi.org/10.1007/s00248-016-0926-2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00248-016-0926-2" target="_blank" >10.1007/s00248-016-0926-2</a>
Alternative languages
Result language
angličtina
Original language name
Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments
Original language description
The Watson River drains a portion of the SW Greenland ice sheet, transporting microbial communities from subglacial environments to a delta at the head of Sondre Stromfjord. This study investigates the potential activity and community shifts of glacial microbiota deposited and buried under layers of sediments within the river delta. A long-term (12-month) incubation experiment was established using Watson River delta sediment under anaerobic conditions, with and without CO2/H-2 enrichment. Within CO2/H-2-amended incubations, sulphate depletion and a shift in the microbial community to a 52% predominance of Desulfosporosinus meridiei by day 371 provides evidence for sulphate reduction. We found evidence of methanogenesis in CO2/H-2-amended incubations within the first 5 months, with production rates of similar to 4 pmol g(-1) d(-1), which was likely performed by methanogenic Methanomicrobiales-and Methanosarcinales-related organisms. Later, a reduction in methane was observed to be paired with the depletion of sulphate, and we hypothesise that sulphate reduction out competed hydrogenotrophic methanogenesis. The structure and diversity of the original CO2/H-2-amended incubation communities changed dramatically with a major shift in predominant community members and a decline in diversity and cell abundance. These results highlight the need for further investigations into the fate of subglacial microbiota within downstream environments.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology
Result continuities
Project
<a href="/en/project/GJ15-17346Y" target="_blank" >GJ15-17346Y: The bright future of subglacial ecosystems: Impacts of deglaciation on microbial activity and carbon cycling at glacier beds</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Microbial Ecology
ISSN
0095-3628
e-ISSN
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Volume of the periodical
74
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
4
Pages from-to
6-9
UT code for WoS article
000403255500002
EID of the result in the Scopus database
2-s2.0-85008698564