Results 81 to 90 of about 50,983 (187)

Nitrogen removal in marine environments: recent findings and future research challenges [PDF]

, 2005
Respiratory reduction of nitrate (denitrification) is recognized as the most important process converting biologically available (fixed) nitrogen to N2. In current N cycle models, a major proportion of global marine denitrification (50–70%) is assumed to
Aller, Robert Curwood, Canfield, Donald E., Dalsgaard, Tage, Engström, Pia, Gilbert, Franck, Hulth, Stefan, Sundbäck, Kristina, Thamdrup, Bo   +7 more
core   +3 more sources

ECOSSE: Estimating Carbon in Organic Soils - Sequestration and Emissions: Final Report [PDF]

, 2007
Background Climate change, caused by greenhouse gas ( GHG) emissions, is one of the most serious threats facing our planet, and is of concern at both UK and devolved administration levels.
Aitkenhead, Matt, Bell, John, Bradley, Ian, Chapman, Steve, Evans, Christopher, Falloon, Pete, Flynn, Helen, Foereid, Bente, Frogbrook, Zoë, Killham, Ken, Lumsdon, David, Milne, Ronald, Rangel-Castro, Ignacio, Reynolds, Brian, Simmons, Ivan, Skiba, Ute, Smith, Jo, Smith, Pete, Thomson, Amanda, Towers, Willie, Whitmore, Andy   +20 more
core  

Deep Sediment-Sourced Methane Contribution to Shallow Sediment Organic Carbon: Atwater Valley, Texas-Louisiana Shelf, Gulf of Mexico

Energies, 2015
Coastal methane hydrate deposits are globally abundant. There is a need to understand the deep sediment sourced methane energy contribution to shallow sediment carbon relative to terrestrial sources and phytoplankton.
Richard B. Coffin, Christopher L. Osburn, Rebecca E. Plummer, Joseph P. Smith, Paula S. Rose, Kenneth S. Grabowski   +5 more
doaj   +1 more source

Effect of Ethanol on Microbial Community Structure and Function During Natural Attenuation of Benzene, Toluene, and \u3cem\u3eo\u3c/em\u3e-Xylene in a Sulfate-reducing Aquifer [PDF]

, 2008
Ethanol (EtOH) is a commonly used fuel oxygenate in reformulated gasoline and is an alternative fuel and fuel supplement. Effects of EtOH release on aquifer microbial ecology and geochemistry have not been well characterized in situ.
Chakraborty, Irina, de Sieyes, Nick, Einarson, Murray, Feris, Kevin, Hristova, Krassimira R., Mackay, Doug, Scow, Kate M.   +6 more
core   +1 more source

Capturing methane with recombinant soluble methane monooxygenase and recombinant methyl‐coenzyme M reductase

Microbial Biotechnology
Methane capture via oxidation is considered one of the ‘Holy Grails’ of catalysis (Tucci and Rosenzweig, 2024). Methane is also a primary greenhouse gas that has to be reduced by 1.2 billion metric tonnes in 10 years to decrease global warming by only 0 ...
Viviana Sanchez‐Torres, Thomas K. Wood
doaj   +1 more source

A metagenomics-based metabolic model of nitrate-dependent anaerobic oxidation of methane by Methanoperedens-like archaea

Frontiers in Microbiology, 2015
Methane oxidation is an important process to mitigate the emission of the greenhouse gas methane and further exacerbating of climate forcing. Both aerobic and anaerobic microorganisms have been reported to catalyze methane oxidation with only a few ...
Arslan eArshad, Daan R Speth, Rob M De Graaf, Huub J.M. Op den Camp, Mike S.M. Jetten, Cornelia U Welte   +5 more
doaj   +1 more source

Diversity, Methane Oxidation Activity, and Metabolic Potential of Microbial Communities in Terrestrial Mud Volcanos of the Taman Peninsula

Microorganisms
Microbial communities of terrestrial mud volcanoes are involved in aerobic and anaerobic methane oxidation, but the biological mechanisms of these processes are still understudied.
Alexander I. Slobodkin, Igor I. Rusanov, Galina B. Slobodkina, Aleksandra R. Stroeva, Nikolay A. Chernyh, Nikolai V. Pimenov, Alexander Y. Merkel   +6 more
doaj   +1 more source

Relating Methanogen Community Structure and Anaerobic Digester Function [PDF]

, 2015
Much remains unknown about the relationships between microbial community structure and anaerobic digester function. However, knowledge of links between community structure and function, such as specific methanogenic activity (SMA) and COD removal rate ...
Bocher, Benjamin T.W., Cherukuri, Keerthi, Johnson, M., Maki, James, Zitomer, Daniel   +4 more
core   +1 more source

Metal-driven anaerobic oxidation of methane and the Sturtian deglaciation

Nature Communications
The Sturtian and Marinoan glaciations shaped Neoproterozoic palaeoenvironmental evolution. While methane emission likely intensified the Marinoan greenhouse effect, its role during the Sturtian glaciation—coinciding with widespread iron formations (IFs ...
Jun Hu, Sanzhong Li, Shui-Jiong Wang, Jörn Peckmann, Hongxiang Guan, Shao-yong Jiang, Wei Chen, Huan Cui, Zheng Qin, Peng Liu, Yanhui Suo, Zhaoxia Jiang, Dongyong Li, Nan Wang, Xiaohui Li, Yuan Zhong, Ruru Li, Xi-Ming Yang, Kurt O. Konhauser   +18 more
doaj   +1 more source

Vertical distribution of methanotrophic archaea in an iron-rich groundwater discharge zone.

PLoS ONE
Anaerobic oxidation of methane coupled to iron reduction (Fe-AOM) is a crucial process for methane removal in terrestrial environments. However, the occurrence of Fe-AOM in natural environments is rare, and the mechanisms behind the direct coupling of ...
Katsunori Yanagawa, Misaki Okabeppu, Sakiko Kikuchi, Fumito Shiraishi, Yumiko Nakajima, Akihiro Kano   +5 more
doaj   +1 more source