Results 91 to 100 of about 12,308 (209)

Sulfur Isotope Biogeochemistry Controlled by Sulfate Reduction Activity in Cold Seep Sediments

Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract Cold seeps are unique deep‐sea ecosystems that play an important role in marine biogeochemical cycles. However, the dynamics and regulation of sulfur isotope biogeochemistry in seep sediments remain unconstrained. We investigated the geochemical characteristics of active seep sites, including the content and stable isotope composition of ...
Bing‐Zheng Wu, Jiarui Liu, Xiting Liu, Shi‐Hai Mao, Zhen Zhou, Qiao Liu, Gui‐Peng Yang, Samantha B. Joye, Guang‐Chao Zhuang   +8 more
wiley   +1 more source

Diverse Cooccurring Metabolisms Support Sulfur and Methane Cycling in Wetland Surficial Sediments

Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 9, September 2025.
Abstract The Prairie Pothole Region (PPR) of North America contains millions of small depressional wetlands with some of the highest methane (CH4) fluxes ever reported in terrestrial ecosystems. In saturated soils, two conventional paradigms are (a) methanogenesis is the final step in the redox ladder, occurring only after more thermodynamically ...
Emily K. Bechtold, Danhui Xin, Maricia Pacheco, Brandy M. Toner, William A. Arnold, Yu‐Ping Chin, Michael J. Wilkins   +6 more
wiley   +1 more source

Metabolically active microbial communities in marine sediment under high-CO2 and low-pH extremes [PDF]

, 2012
Sediment-hosting hydrothermal systems in the Okinawa Trough maintain a large amount of liquid, supercritical and hydrate phases of CO2 in the seabed. The emission of CO2 may critically impact the geochemical, geophysical and ecological characteristics of
A Boetius, A Chao, A Miyashita, A Pernthaler, A Teske, Antje Boetius, CJ Krebs, D de Beer, D de Beer, Dirk de Beer, E Pruesse, EC Pielou, EF DeLong, F Inagaki, F Inagaki, F Inagaki, F Wenzhöfer, Fumio Inagaki, Gregor Rehder, H Fossing, H Niemann, H Sakai, J Kallmeyer, J Kallmeyer, J Kallmeyer, J Lupton, J Lupton, JA Frank, JF Biddle, JM Hall-Spencer, JP Barry, JR Cole, K Grasshoff, K Knittel, K Knittel, K Nauhaus, K Shitashima, K Yanagawa, Katsunori Yanagawa, KE Fabricius, KG Lloyd, KG Lloyd, KH Nealson, Ko-ichi Nakamura, KZ House, Matthias Haeckel, Michinari Sunamura, NP Revsbech, P Jeroschewski, PD Schloss, R Suzuki, RI Amann, RI Amann, S Kleindienst, T Holler, T Hoshino, T Huber, T Nunoura, T Nunoura, Taiki Futagami, Takeshi Terada, Tatsuhiko Hoshino, TC Onstott, Tetsuro Urabe, U Konno, V Tunnicliffe, VJ Orphan, W Ludwig, W Manz, WJ Brazelton, Y Morono, Y Morono, YN Yu, Yuki Morono   +73 more
core   +1 more source

Energy Gradients Structure Microbial Communities Across Sediment Horizons in Deep Marine Sediments of the South China Sea [PDF]

, 2018
The deep marine subsurface is a heterogeneous environment in which the assembly of microbial communities is thought to be controlled by a combination of organic matter deposition, electron acceptor availability, and sedimentology.
Borchers, Matthew, Colwell, Frederick S., D\u27Angelo, Grace, Graw, Michael F., Johnson, Joel E., Thurber, Andrew R., Zhang, Chuanlun   +6 more
core   +1 more source

Is early center-based child care associated with tantrums and unmanageable behavior over time up to school entry? [PDF]

, 2012
Background. Existing research suggests that there is a relationship between greater exposure to center-based child care and child behavioral problems though the mechanism for the impact is unclear.
AE Hogan, CK Conners, D Civic, DA Crosby, DP Goldberg, DS Shaw, E Melhuish, EC Melhuish, HH Goldsmith, HI Bath, J Barnes, J Belsky, Jacqueline Barnes, JD Singer, JI Jacob, JL Miner, K McCartney, K McCartney, K Wahl, L Rescorla, M Pluess, N Richman, NICHD Early Child Care Research Network, NICHD Early Child Care Research Network, NICHD Early Child Care Research Network, P Leach, P Leach, PT Costa, R Goodman, RA Thompson, SH Goodman, SM Redmond, Suna Eryigit-Madzwamuse, T Anme, TCEM Beijsterveldt Van, U Pauli-Pott   +35 more
core   +1 more source

Methane-Fueled Syntrophy through Extracellular Electron Transfer: Uncovering the Genomic Traits Conserved within Diverse Bacterial Partners of Anaerobic Methanotrophic Archaea

mBio, 2017
The anaerobic oxidation of methane by anaerobic methanotrophic (ANME) archaea in syntrophic partnership with deltaproteobacterial sulfate-reducing bacteria (SRB) is the primary mechanism for methane removal in ocean sediments.
Connor T. Skennerton, Karuna Chourey, Ramsunder Iyer, Robert L. Hettich, Gene W. Tyson, Victoria J. Orphan   +5 more
doaj   +1 more source

Metagenomic and geochemical characterization of pockmarked sediments overlaying the Troll petroleum reservoir in the North Sea [PDF]

, 2012
Background Pockmarks (depressions in the seabed) have been discovered throughout the world’s oceans and are often related to hydrocarbon seepage. Although high concentrations of pockmarks are present in the seabed overlaying the Troll oil
Haverkamp, Thomas H, Håvelsrud, Othilde E, Jakobsen, Kjetill S, Kristensen, Tom, Rike, Anne G   +4 more
core   +1 more source

Methane oxidation in permeable sediments at hydrocarbon seeps in the Santa Barbara Channel, California [PDF]

, 2010
A shallow-water area in the Santa Barbara Channel, California, known collectively as the Coal Oil Point seep field, is one of the largest natural submarine hydrocarbon emission areas in the world.
Treude, Tina, Ziebis, Wiebke
core   +2 more sources

Mechanisms of extracellular electron transfer in anaerobic methanotrophic archaea

Nature Communications
Anaerobic methanotrophic (ANME) archaea are environmentally important, uncultivated microorganisms that oxidize the potent greenhouse gas methane. During methane oxidation, ANME archaea engage in extracellular electron transfer (EET) with other microbes,
Heleen T. Ouboter, Rob Mesman, Tom Sleutels, Jelle Postma, Martijn Wissink, Mike S. M. Jetten, Annemiek Ter Heijne, Tom Berben, Cornelia U. Welte   +8 more
doaj   +1 more source

Methane seep in shallow-water permeable sediment harbors high diversity of anaerobic methanotrophic communities, Elba, Italy

Frontiers in Microbiology, 2016
The anaerobic oxidation of methane (AOM) is a key biogeochemical process regulating methane emission from marine sediments into the hydrosphere. AOM is largely mediated by consortia of anaerobic methanotrophic archaea (ANME) and sulfate-reducing bacteria
S Emil Ruff, S Emil Ruff, S Emil Ruff, Hanna eKuhfuss, Gunter eWegener, Gunter eWegener, Christian eLott, Alban eRamette, Alban eRamette, Johanna eWiedling, Johanna eWiedling, Katrin eKnittel, Miriam eWeber, Miriam eWeber   +13 more
doaj   +1 more source