Bacterial Dynamics in Supraglacial Habitats of the Greenland Ice Sheet
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F19%3A10409515" target="_blank" >RIV/00216208:11310/19:10409515 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=7mLNlx6oVf" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=7mLNlx6oVf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3389/fmicb.2019.01366" target="_blank" >10.3389/fmicb.2019.01366</a>
Alternative languages
Result language
angličtina
Original language name
Bacterial Dynamics in Supraglacial Habitats of the Greenland Ice Sheet
Original language description
Current research into bacterial dynamics on the Greenland Ice Sheet (GrIS) is biased toward cryoconite holes, despite this habitat covering less than 8% of the ablation (melt) zone surface. In contrast, the expansive surface ice, which supports wide-spread Streptophyte micro-algal blooms thought to enhance surface melt, has been relatively neglected. This study aims to understand variability in bacterial abundance and production across an ablation season on the GrIS, in relation to micro-algal bloom dynamics. Bacterial abundance reached 3.3 +/- 0.3 x 10(5) cells ml(-1) in surface ice and was significantly linearly related to algal abundances during the middle and late ablation periods (R-2 = 0.62, p < 0.05; R-2 = 0.78, p < 0.001). Bacterial production (BP) of 0.03-0.6 mu g C L(-1)h(-1) was observed in surface ice and increased in concert with glacier algal abundances, indicating that heterotrophic bacteria consume algal-derived dissolved organic carbon. However, BP remained at least 28 times lower than net primary production, indicating inefficient carbon cycling by heterotrophic bacteria and net accumulation of carbon in surface ice throughout the ablation season. Across the supraglacial environment, cryoconite sediment BP was at least four times greater than surface ice, confirming that cryoconite holes are the true "hot spots" of heterotrophic bacterial activity.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10618 - Ecology
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Frontiers in Microbiology
ISSN
1664-302X
e-ISSN
—
Volume of the periodical
10
Issue of the periodical within the volume
July 2019
Country of publishing house
CH - SWITZERLAND
Number of pages
9
Pages from-to
1366
UT code for WoS article
000473576000001
EID of the result in the Scopus database
2-s2.0-85068960179