Results 31 to 40 of about 4,450 (203)

Hydrothermal activity lowers trophic diversity in Antarctic sedimented hydrothermal vents [PDF]

, 2016
Sedimented hydrothermal vents are those in which hydrothermal fluid vents through sediment and are among the least studied deep-sea ecosystems. We present a combination of microbial and biochemical data to assess trophodynamics between and within ...
Bell, James B., Glover, Adrian G., Newton, Jason, Pearce, David A., Reid, William D.K., Sweeting, Christopher J., Woulds, Clare   +6 more
core   +1 more source

Carbon Isotope Chemostratigraphy Across the Permian-Triassic Boundary at Chaotian, China: Implications for the Global Methane Cycle in the Aftermath of the Extinction

Frontiers in Earth Science, 2021
During the end-Permian extinction, a substantial amount of methane (CH4) was likely released into the ocean-atmosphere system associated with the Siberian Traps volcanism, although fluctuations in the global CH4 cycle in the aftermath of the extinction ...
Masafumi Saitoh, Masafumi Saitoh, Masafumi Saitoh, Yukio Isozaki   +3 more
doaj   +1 more source

Anomalous negative excursion of carbon isotope in organic carbon after the last Paleoproterozoic glaciation in North America [PDF]

, 2010
Early Paleoproterozoic time (2.5–2.0 Ga) spanned a critical phase in Earth's history, characterized by repeated glaciations and an increase in atmospheric oxygen (the Great Oxidation Event (GOE)).
Bekker, Bekker, Bekker, Bekker, Clayton, Dutkiewicz, Eigenbrode, Eiichi Tajika, Evans, Gair, Hayes, Hayes, Hayes, Holland, Joseph L. Kirschvink, Karhu, Kazuhisa Goto, Kirschvink, Kohonen, Long, Marmo, McLennan, Nanako O. Ogawa, Naohiko Ohkouchi, Ogawa, Ohkouchi, Ojakangas, Ojakangas, Ojakangas, Papineau, Pavlov, Rainbird, Rasmussen, Ryuji Tada, Schoell, Shinji Yamamoto, Vallini, Yasuhito Sekine, Young, Young, Young, Young   +41 more
core   +1 more source

Methanotrophy below pH 1 by a new Verrucomicrobia species [PDF]

Nature, 2007
Mud volcanoes, mudpots and fumaroles are remarkable geological features characterized by the emission of gas, water and/or semi-liquid mud matrices with significant methane fluxes to the atmosphere (10(-1) to 10(3) t y(-1)). Environmental conditions in these areas vary from ambient temperature and neutral pH to high temperatures and low pH.
POL A., HEIJMANS K., HARHANGI H., TEDESCO, Dario, JETTEN M., OP DEN CAMP H.   +5 more
openaire   +2 more sources

A scalable model for methane consumption in arctic mineral soils

Geophysical Research Letters, 2016
Recent field studies have documented a surprisingly strong and consistent methane sink in arctic mineral soils, thought to be due to high‐affinity methanotrophy.
Youmi Oh, Brandon Stackhouse, Maggie C. Y. Lau, Xiangtao Xu, Anna T. Trugman, Jonathan Moch, Tullis C. Onstott, Christian J. Jørgensen, Ludovica D'Imperio, Bo Elberling, Craig A. Emmerton, Vincent L. St. Louis, David Medvigy   +12 more
doaj   +1 more source

Redox Zone and Trophic State as Drivers of Methane-Oxidizing Bacterial Abundance and Community Structure in Lake Sediments

Frontiers in Environmental Science, 2022
Eutrophication is expected to increase methane production in freshwater sediments worldwide over the coming decades. Methane-oxidizing bacteria (MOB) consume a significant fraction of this sedimentary methane, but the factors that control their ...
Sigrid van Grinsven, Dimitri V. Meier, Anja Michel, Xingguo Han, Carsten J. Schubert, Carsten J. Schubert, Mark A. Lever   +6 more
doaj   +1 more source

Riverbed methanotrophy sustained by high carbon conversion efficiency [PDF]

The ISME Journal, 2015
Abstract Our understanding of the role of freshwaters in the global carbon cycle is being revised, but there is still a lack of data, especially for the cycling of methane, in rivers and streams. Unravelling the role of methanotrophy is key to determining the fate of methane in rivers.
Mark, Trimmer, Felicity C, Shelley, Kevin J, Purdy, Susanna T, Maanoja, Panagiota-Myrsini, Chronopoulou, Jonathan, Grey, Grey, Jonathan   +6 more
openaire   +5 more sources

Methanotrophy potential versus methane supply by pore water diffusion in peatlands [PDF]

, 2015
Journal ArticlePublished by Copernicus Publications on behalf of the European Geosciences UnionAuthor(s) 2009.Low affinity methanotrophic bacteria consume a significant quantity of methane in wetland soils in the vicinity of plant roots and at the oxic ...
Bowes, HL, Culbert, A, Gallego-Sala, Angela V., Hornibrook, ERC   +3 more
core   +1 more source

Diverse electron sources support denitrification under hypoxia in the obligate methanotroph Methylomicrobium album strain BG8

Frontiers in Microbiology, 2015
Aerobic methane-oxidizing bacteria are a diverse group of microorganisms that are ubiquitous in natural environments. Along with anaerobic methane-oxidizing bacteria and archaea, aerobic methanotrophs are critical for attenuating emission of methane to ...
K. Dimitri eKits, Dustin J Campbell, Albert eRemus Rosana, Lisa Y Stein   +3 more
doaj   +1 more source

Insights into the Ecological Roles and Evolution of Methyl-Coenzyme M Reductase-Containing Hot Spring Archaea [PDF]

, 2019
Several recent studies have shown the presence of genes for the key enzyme associated with archaeal methane/alkane metabolism, methyl-coenzyme M reductase (Mcr), in metagenome-assembled genomes (MAGs) divergent to existing archaeal lineages.
Chen, Ya-Ting, Evans, Paul N., Goh, Kian Mau, Hedlund, Brian P., Hozzein, Wael, Hua, Zheng-Shuang, Huang, Min-Jun, Jiao, Jian-Yu, Li, Wen-Jun, Li, Yu-Xian, Mao, Yan-Ping, Qi, Yan-Ling, Qu, Yan-Ni, Rao, Yang-Zhi, Shu, Wen-Sheng, Tyson, Gene W., Wang, Yu-Lin, Zhang, Tong   +17 more
core   +3 more sources