Meltwater export of prokaryotic cells from the Greenland ice sheet

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F17%3A10360622" target="_blank" >RIV/00216208:11310/17:10360622 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1111/1462-2920.13483" target="_blank" >http://dx.doi.org/10.1111/1462-2920.13483</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/1462-2920.13483" target="_blank" >10.1111/1462-2920.13483</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Meltwater export of prokaryotic cells from the Greenland ice sheet

Popis výsledku v původním jazyce

Microorganisms are flushed from the Greenland Ice Sheet (GrIS) where they may contribute towards the nutrient cycling and community compositions of downstream ecosystems. We investigate meltwater microbial assemblages as they exit the GrIS from a large outlet glacier, and as they enter a downstream river delta during the record melt year of 2012. Prokaryotic abundance, flux and community composition was studied, and factors affecting community structures were statistically considered. The mean concentration of cells exiting the ice sheet was 8.30 x 10(4) cells mL(-1) and we estimate that approximate to 1.02 x 10(21) cells were transported to the downstream fjord in 2012, equivalent to 30.95 Mg of carbon. Prokaryotic microbial assemblages were dominated by Proteobacteria, Bacteroidetes, and Actinobacteria. Cell concentrations and community compositions were stable throughout the sample period, and were statistically similar at both sample sites. Based on our observations, we argue that the subglacial environment is the primary source of the river-transported microbiota, and that cell export from the GrIS is dependent on discharge. We hypothesise that the release of subglacial microbiota to downstream ecosystems will increase as freshwater flux from the GrIS rises in a warming world.

Název v anglickém jazyce

Meltwater export of prokaryotic cells from the Greenland ice sheet

Popis výsledku anglicky

Microorganisms are flushed from the Greenland Ice Sheet (GrIS) where they may contribute towards the nutrient cycling and community compositions of downstream ecosystems. We investigate meltwater microbial assemblages as they exit the GrIS from a large outlet glacier, and as they enter a downstream river delta during the record melt year of 2012. Prokaryotic abundance, flux and community composition was studied, and factors affecting community structures were statistically considered. The mean concentration of cells exiting the ice sheet was 8.30 x 10(4) cells mL(-1) and we estimate that approximate to 1.02 x 10(21) cells were transported to the downstream fjord in 2012, equivalent to 30.95 Mg of carbon. Prokaryotic microbial assemblages were dominated by Proteobacteria, Bacteroidetes, and Actinobacteria. Cell concentrations and community compositions were stable throughout the sample period, and were statistically similar at both sample sites. Based on our observations, we argue that the subglacial environment is the primary source of the river-transported microbiota, and that cell export from the GrIS is dependent on discharge. We hypothesise that the release of subglacial microbiota to downstream ecosystems will increase as freshwater flux from the GrIS rises in a warming world.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

<a href="/cs/project/GJ15-17346Y" target="_blank" >GJ15-17346Y: Světlé zítřky subglaciálních ekosystémů: Dopady odledňování na mikrobiální aktivitu a koloběh uhlíku pod ledovci</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Environmental Microbiology

ISSN

1462-2912

e-ISSN

—

Svazek periodika

19

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

524-534

Kód UT WoS článku

000394973000015

EID výsledku v databázi Scopus

2-s2.0-84992029448