Marek Stibal
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View article: Comment on egusphere-2024-817
Comment on egusphere-2024-817 Open
Abstract. The microbial ecosystems that lie beneath ice sheets can impact and contribute to global biogeochemical cycles, yet remain poorly understood given the logistical challenges in directly accessing the subglacial environment. Studie…
View article: Understanding microbial sourcing in Greenland subglacial runoff
Understanding microbial sourcing in Greenland subglacial runoff Open
The microbial ecosystems that lie beneath ice sheets can impact and contribute to global biogeochemical cycles, yet remain poorly understood given the logistical challenges in directly accessing the subglacial environment. Studies instead …
View article: The potential for methane production and release from subglacial sediments underneath the Greenland Ice Sheet – a model sensitivity study
The potential for methane production and release from subglacial sediments underneath the Greenland Ice Sheet – a model sensitivity study Open
Recent studies have shown the release of methane (CH4) from the melting Greenland Ice Sheet (GrIS) and identified it as having an additional potential positive climate feedback. This methane originates mainly from acetoclastic methanogenes…
View article: Is methane being released from Norwegian glaciers? 
Is methane being released from Norwegian glaciers?  Open
Recent research underscores a potential, yet overlooked, positive climate feedback mechanism: the transport of subglacially produced methane (CH4) to the atmosphere via meltwater. While the majority of research focused on release from bene…
View article: Methane release drives subglacial microbial community assembly at the western margin of the Greenland Ice Sheet
Methane release drives subglacial microbial community assembly at the western margin of the Greenland Ice Sheet Open
The basal environments of ice sheets play an important role as places of methane (CH4) production, storage, and release. Recent investigations have confirmed the release of subglacial methane of microbial origin at the western margin of th…
View article: Recently formed Antarctic lakes host less diverse benthic bacterial and diatom communities than their older counterparts
Recently formed Antarctic lakes host less diverse benthic bacterial and diatom communities than their older counterparts Open
Glacier recession is creating new water bodies in proglacial forelands worldwide, including Antarctica. Yet, it is unknown how microbial communities of recently formed “young” waterbodies (originating decades to a few centuries ago) compar…
View article: The potential for methane production and accumulation in Greenland’s subglacial environment– Steps Towards A New Mechanistic Hydrological-Biogeochemical Model For Subglacial Methane Cycling
The potential for methane production and accumulation in Greenland’s subglacial environment– Steps Towards A New Mechanistic Hydrological-Biogeochemical Model For Subglacial Methane Cycling Open
 Recent studies have shown the release of methane (CH4) through the melting Greenland Ice Sheet, and have thus identified it to have an additional potential positive climate feedback. This CH4 is thought to originate from biologically…
View article: Catchment characteristics and seasonality control the composition of microbial assemblages exported from three outlet glaciers of the Greenland Ice Sheet
Catchment characteristics and seasonality control the composition of microbial assemblages exported from three outlet glaciers of the Greenland Ice Sheet Open
Glacial meltwater drains into proglacial rivers where it interacts with the surrounding landscape, collecting microbial cells as it travels downstream. Characterizing the composition of the resulting microbial assemblages in transport can …
View article: Particulate organic carbon (POC) concentration in meltwater runoff of Leverett Glacier, Russell Glacier, and Isunnguata Sermia, southwest Greenland (2009-2018)
Particulate organic carbon (POC) concentration in meltwater runoff of Leverett Glacier, Russell Glacier, and Isunnguata Sermia, southwest Greenland (2009-2018) Open
This dataset describes particulate organic carbon (POC) and particulate carbon (PC) concentrations of suspended sediments in the proglacial rivers of 3 land-terminating glaciers in the Kangerlussuaq area, Southwest Greenland: Leverett Glac…
View article: Particulate organic carbon (POC) concentration in meltwater runoff of Leverett Glacier, Russell Glacier, and Isunnguata Sermia, southwest Greenland (2009-2018)
Particulate organic carbon (POC) concentration in meltwater runoff of Leverett Glacier, Russell Glacier, and Isunnguata Sermia, southwest Greenland (2009-2018) Open
This dataset describes particulate organic carbon (POC) and particulate carbon (PC) concentrations of suspended sediments in the proglacial rivers of 3 land-terminating glaciers in the Kangerlussuaq area, Southwest Greenland: Leverett Glac…
View article: Particulate organic carbon (POC) concentration in meltwater runoff of Leverett Glacier, Russell Glacier, and Isunnguata Sermia, southwest Greenland (2009-2018)
Particulate organic carbon (POC) concentration in meltwater runoff of Leverett Glacier, Russell Glacier, and Isunnguata Sermia, southwest Greenland (2009-2018) Open
This dataset describes particulate organic carbon (POC) and particulate carbon (PC) concentrations of suspended sediments in the proglacial rivers of 3 land-terminating glaciers in the Kangerlussuaq area, Southwest Greenland: Leverett Glac…
Longitudinal patterns of suspended microbial assemblages in glacier-fed streams. Open
<p>Glaciers are considered to be a biome with diverse microbial life, and their meltwaters are highly influential to downstream ecosystems by creating a unique riverine habitat template and providing resources such as nutrients and o…
View article: Subglacial methane cycling under the Greenland Ice Sheet&#160;
Subglacial methane cycling under the Greenland Ice Sheet  Open
<p>Glaciers and ice sheets cover around 10% of the Earth&#8217;s surface and the Greenland Ice Sheet (GrIS) is the largest ice mass in the Northern hemisphere, but is melting at an increasing rate, losing ~400 km<sup>3</…
View article: The Biogeochemical Legacy of Arctic Subglacial Sediments Exposed by Glacier Retreat
The Biogeochemical Legacy of Arctic Subglacial Sediments Exposed by Glacier Retreat Open
During past periods of advance, Arctic glaciers and ice sheets overrode soil, sediments, and vegetation and buried significant stores of organic matter (OM); these glaciers are now shrinking rapidly due to climate warming. Little is known …
View article: Cryoconite – From minerals and organic matter to bioengineered sediments on glacier's surfaces
Cryoconite – From minerals and organic matter to bioengineered sediments on glacier's surfaces Open
Cryoconite is a mixture of mineral and organic material covering glacial ice, playing important roles in biogeochemical cycles and lowering the albedo of a glacier surface. Understanding the differences in structure of cryoconite across th…
Storage and export of microbial biomass across the western Greenland Ice Sheet Open
The Greenland Ice Sheet harbours a wealth of microbial life, yet the total biomass stored or exported from its surface to downstream environments is unconstrained. Here, we quantify microbial abundance and cellular biomass flux within the …
Datasets for "Large subglacial source of mercury from the southwestern margin of the Greenland Ice Sheet" Open
Geochemical measurements and hydrochemical datasets linked to the publication "Large subglacial source of mercury from the southwestern margin of the Greenland Ice Sheet" in Nature Geoscience. Presented are (1) data for mercury concentrati…
Datasets for "Large subglacial source of mercury from the southwestern margin of the Greenland Ice Sheet" Open
Geochemical measurements and hydrochemical datasets linked to the publication "Large subglacial source of mercury from the southwestern margin of the Greenland Ice Sheet" in Nature Geoscience. Presented are (1) data for mercury concentrati…
Datasets for "Large subglacial source of mercury from the southwestern margin of the Greenland Ice Sheet" Open
Geochemical measurements and hydrochemical datasets linked to the publication "Large subglacial source of mercury from the southwestern margin of the Greenland Ice Sheet" in Nature Geoscience. Presented are (1) data for mercury concentrati…
Datasets for "Large subglacial source of mercury from the southwestern margin of the Greenland Ice Sheet" Open
Geochemical measurements and hydrochemical datasets linked to the publication "Large subglacial source of mercury from the southwestern margin of the Greenland Ice Sheet" in Nature Geoscience. Presented are (1) data for mercury concentrati…
View article: Enhanced trace element mobilization by Earth’s ice sheets
Enhanced trace element mobilization by Earth’s ice sheets Open
Significance Trace elements are integral to biogeochemical processes at the Earth’s surface and play an important role in the carbon cycle as micronutrients to support biological productivity. We present data from the Greenland and Antarct…
Meltwater runoff from the Greenland Ice Sheet reveals microbial consortia from contrasting subglacial drainage systems Open
Ice sheets overlay active and putatively widespread microbial ecosystems. An active subglacial biota has the potential to impact strongly on the (bio)geochemistry of local as well as downstream environments. Such impacts partly depend on t…
Glacial microbiota are hydrologically connected and temporally variable Open
Summary Glaciers are melting rapidly. The concurrent export of microbial assemblages alongside glacial meltwater is expected to impact the ecology of adjoining ecosystems. Currently, the source of exported assemblages is poorly understood,…
Patterns in Microbial Assemblages Exported From the Meltwater of Arctic and Sub-Arctic Glaciers Open
Meltwater streams connect the glacial cryosphere with downstream ecosystems. Dissolved and particulate matter exported from glacial ecosystems originates from contrasting supraglacial and subglacial environments, and exported microbial cel…