Frauke Schmidt
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View article: Moderate heating renders 7.8-million-year-old sedimentary organic matter bioavailable
Moderate heating renders 7.8-million-year-old sedimentary organic matter bioavailable Open
Marine sediments are a large reservoir of recalcitrant organic matter and host microbes at subsurface depths exceeding 2.4 kilometers and temperatures up to 120°C, yet the mechanisms supplying bioavailable substrates remain unclear. Here, …
View article: Microbial diversity gradients in the geothermal mud volcano underlying the hypersaline Urania Basin
Microbial diversity gradients in the geothermal mud volcano underlying the hypersaline Urania Basin Open
Mud volcanoes transport deep fluidized sediment and their microbial communities and thus provide a window into the deep biosphere. However, mud volcanoes are commonly sampled at the surface and not probed at greater depths, with the conseq…
View article: Microbial diversity gradients in the geothermal mud volcano underlying the hypersaline Urania Basin
Microbial diversity gradients in the geothermal mud volcano underlying the hypersaline Urania Basin Open
Mud volcanoes transport deep fluidized sediment and their microbial communities and thus provide a window into the deep biosphere. However, mud volcanoes are commonly sampled at the surface and not probed at greater depths, with the conseq…
View article: Near-surface Heating of Young Rift Sediment Causes Mass Production and Discharge of Reactive Dissolved Organic Matter
Near-surface Heating of Young Rift Sediment Causes Mass Production and Discharge of Reactive Dissolved Organic Matter Open
Ocean margin sediments have been considered as important sources of dissolved organic carbon (DOC) to the deep ocean, yet the contribution from advective settings has just started to be acknowledged. Here we present evidence showing that n…
View article: Deep-biosphere methane production stimulated by geofluids in the nankai accretionary complex
Deep-biosphere methane production stimulated by geofluids in the nankai accretionary complex Open
Microbial life inhabiting subseafloor sediments plays an important role in Earth’s carbon cycle. However, the impact of geodynamic processes on the distributions and carbon-cycling activities of subseafloor life remains poorly constrained.…
View article: Deep-biosphere methane production stimulated by geofluids in the Nankai accretionary complex
Deep-biosphere methane production stimulated by geofluids in the Nankai accretionary complex Open
Scientific drilling at a submarine mud volcano shows that geofluid migration stimulates methanogenesis in the deep biosphere.
View article: Molecular composition in surface and subsurface sediments of the Helgoland mud area, North Sea
Molecular composition in surface and subsurface sediments of the Helgoland mud area, North Sea Open
The role of microorganisms in the cycling of sedimentary organic carbon is a crucial one. To better understand relationships between molecular composition of a potentially bioavailable fraction of organic matter and microbial populations, …
View article: (Table 1) Concentrations of dissolved organic carbon (DOC), total dissolved nitrogen (TDN), their ratios in WE-OM, and proportion of water extractable organic carbon (WE-OC) in TOC
(Table 1) Concentrations of dissolved organic carbon (DOC), total dissolved nitrogen (TDN), their ratios in WE-OM, and proportion of water extractable organic carbon (WE-OC) in TOC Open
(Table 1) Concentrations of dissolved organic carbon (DOC), total dissolved nitrogen (TDN), their ratios in WE-OM, and proportion of water extractable organic carbon (WE-OC) in TOC
View article: (Table 2) Number of molecular formulae, weighted averages (wa) of DBE, molar ratios of oxygen, hydrogen, carbon, nitrogen atoms, and charge to mass ratios of water-extractable organic matter as obtained from FT-ICR MS analysis
(Table 2) Number of molecular formulae, weighted averages (wa) of DBE, molar ratios of oxygen, hydrogen, carbon, nitrogen atoms, and charge to mass ratios of water-extractable organic matter as obtained from FT-ICR MS analysis Open
(Table 2) Number of molecular formulae, weighted averages (wa) of DBE, molar ratios of oxygen, hydrogen, carbon, nitrogen atoms, and charge to mass ratios of water-extractable organic matter as obtained from FT-ICR MS analysis
View article: Microbial Communities and Organic Matter Composition in Surface and Subsurface Sediments of the Helgoland Mud Area, North Sea
Microbial Communities and Organic Matter Composition in Surface and Subsurface Sediments of the Helgoland Mud Area, North Sea Open
The role of microorganisms in the cycling of sedimentary organic carbon is a crucial one. To better understand relationships between molecular composition of a potentially bioavailable fraction of organic matter and microbial populations, …