Results 21 to 30 of about 541,326 (254)

Metabolic potential of uncultured bacteria and archaea associated with petroleum seepage in deep-sea sediments

Nature Communications, 2019
Little is known about the microbial ecology of the deep seabed. Here, Dong et al. predict metabolic capabilities and microbial interactions in deep seabed petroleum seeps using shotgun metagenomics, sediment geochemistry, metabolomics, and thermodynamic ...
Xiyang Dong, Chris Greening, Jayne E. Rattray, Anirban Chakraborty, Maria Chuvochina, Daisuke Mayumi, Jan Dolfing, Carmen Li, James M. Brooks, Bernie B. Bernard, Ryan A. Groves, Ian A. Lewis, Casey R. J. Hubert   +12 more
doaj   +1 more source

The Sedimentary Carbon-Sulfur-Iron Interplay – A Lesson From East Anglian Salt Marsh Sediments

Frontiers in Earth Science, 2019
We explore the dynamics of the subsurface sulfur, iron and carbon cycles in salt marsh sediments from East Anglia, United Kingdom. We report measurements of pore fluid and sediment geochemistry, coupled with results from laboratory sediment incubation ...
Gilad Antler, Gilad Antler, Jennifer V. Mills, Alec M. Hutchings, Kelly R. Redeker, Alexandra V. Turchyn   +5 more
doaj   +1 more source

A pan-Canadian calibration of micro-X-ray fluorescence core scanning data for prediction of sediment elemental concentrations

Environmental Advances
Sediment geochemistry is one lens through which lake sediments are studied to reconstruct local and regional environmental processes. The measurement of sediment elemental composition has historically relied on expensive and destructive methods that ...
David R. Zilkey, Alexandre Baud, Pierre Francus, Dermot Antoniades, Irene Gregory-Eaves   +4 more
doaj   +1 more source

Advances in sediment geochemistry and chemostratigraphy for reservoir characterization

Energy Geoscience, 2021
Sedimentary sequences preserve the records of changes in major controls of sedimentation namely, tectonics, climate, relative sea level and sediment production and preservation.
Mu Ramkumar, R. Nagarajan, M. Santosh
doaj   +1 more source

Vivianite formation in ferruginous sediments from Lake Towuti, Indonesia [PDF]

Biogeosciences, 2020
Ferruginous lacustrine systems, such as Lake Towuti, Indonesia, are characterized by a specific type of phosphorus cycling in which hydrous ferric iron (oxyhydr)oxides trap and precipitate phosphorus to the sediment, which reduces its bioavailability in ...
A. Vuillemin, A. Vuillemin, A. Friese, R. Wirth, J. A. Schuessler, A. M. Schleicher, H. Kemnitz, A. Lücke, K. W. Bauer, K. W. Bauer, S. Nomosatryo, S. Nomosatryo, F. von Blanckenburg, R. Simister, L. G. Ordoñez, D. Ariztegui, C. Henny, J. M. Russell, S. Bijaksana, H. Vogel, S. A. Crowe, S. A. Crowe, S. A. Crowe, J. Kallmeyer   +23 more
doaj   +1 more source

Spatial variability of Fe and Mn in surface lake sediments and its implications for paleoredox studies – a case study of Lake Łazduny (Poland) [PDF]

Biogeosciences
Lakes worldwide are deteriorating due to climate change and other human impacts. Specifically, low dissolved oxygen levels are threatening food webs and water security.
M. Żarczyński, D. Enters, D. Enters, B. Szymczycha, W. Tylmann   +4 more
doaj   +1 more source

Drivers of Bacterial α- and β-Diversity Patterns and Functioning in Subsurface Hadal Sediments

Frontiers in Microbiology, 2019
Oceanic trenches at hadal (>6,000 m) depths are hot spots of organic matter deposition and mineralization and can host abundant and active bacterial assemblages.
Eugenio Rastelli, Cinzia Corinaldesi, Antonio Dell’Anno, Michael Tangherlini, Marco Lo Martire, Manabu Nishizawa, Hidetaka Nomaki, Takuro Nunoura, Roberto Danovaro, Roberto Danovaro   +9 more
doaj   +1 more source

Revolutionising Agricultural Sustainability: New ‘Furrow Tillage’ can Mitigate Short‐Term Soil‐to‐Atmosphere CO2 Flux and Promote Soil‐Plant‐Microbe Health

Advanced Science, EarlyView.
Furrow tillage resolves the conventional‐vs.‐no‐tillage trade‐off by simultaneously cutting CO2 efflux to 2.0–3.0 g C m−2 d−1 and unlocking high nutrient availability for the rice rhizosphere. This scalable agronomic solution strengthens soil health, enhances plant physiology, reshapes microbial metabolism, and shifts paddy systems toward a net ...
Arnab Majumdar, Munish Kumar Upadhyay, Argha Ghosh, Rakesh Biswas, Ioly Kotta Loizou, Martin Buck, Mark Tibbett, Biswajit Giri, Debojyoti Moulick, Manoj Kumar Jaiswal, Tarit Roychowdhury   +10 more
wiley   +1 more source

Source-to-Sink Dynamics of Deep-Water Sediments in the Qiongdongnan Basin, South China Sea: Insights from Multi-Proxy Geochemistry

Journal of Marine Science and Engineering
The South China Sea serves as a premier location for investigating sediment provenance and source-to-sink processes within marginal seas. However, the sediment composition and transport mechanisms within the deep-water areas of the Qiongdongnan Basin ...
Xiaomei Xu, Qiangtai Huang, Zhongsheng Zhang, Zirui Qi, Wenhui Liu, Yujie Zhong, Zifeng Hu   +6 more
doaj   +1 more source

Major Element Composition of Sediments in Terms of Weathering and Provenance: Implications for Crustal Recycling

Geochemistry, Geophysics, Geosystems, 2020
The elemental composition of a sediment is set by the composition of its protolith and modified by weathering, sorting, and diagenesis. An important problem is deconvolving these contributions to a sediment's composition to arrive at information about ...
Alex G. Lipp, Oliver Shorttle, Frank Syvret, Gareth G. Roberts   +3 more
doaj   +1 more source