Results 61 to 70 of about 12,223 (196)

Cryptic Carbon Cycle at Methane‐Seeps of the South China Sea: Evidence From Porewaters

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract Anaerobic oxidation of methane (AOM) governs methane consumption at seeps, yet δ13C‐CH4 values in the sulfate‐methane transitions are commonly lower than predicted from preferential 12C utilization by methanotrophic archaea, suggesting the influence of a different methane source. To address this isotope discrepancy, we used high‐resolution ion
Jinyu Zhu, Xiaoming Miao, Hongxiang Guan, Hangyu Nan, Yiwei Zhang, Yuqian Zhang, Nengyou Wu, Sanzhong Li   +7 more
wiley   +1 more source

Overview of geothermal resource exploration and development in North Africa

Deep Underground Science and Engineering, Volume 4, Issue 4, Page 673-685, December 2025.
This article reviews geothermal exploration in North Africa, highlighting key activities, government policies, and exploration findings across Mauritania, Morocco, Algeria, Tunisia, Libya, and Egypt. The region's substantial geothermal potential, driven by tectonic activity, positions it to play a significant role in the global geothermal energy ...
Meryem Redouane
wiley   +1 more source

Habitat Diversity Sustains Ecosystem Functioning in Plateau Arid‐Region Wetlands

Ecology and Evolution, Volume 15, Issue 12, December 2025.
Habitat diversity underpins both biodiversity and functional biogeochemical processes in plateau arid‐region wetlands, thereby stabilizing ecosystem functioning. These functionally complementary habitats collectively drive critical ecosystem processes.
Chenyu Wang, Haicheng Wei, Ronglei Duan, Shi Jin, Jinxin Wen, Hongyu Li, Aiying Cheng, Chunliang Gao, Hongpan Xue, Yilin Hou   +9 more
wiley   +1 more source

Nitrogen and carbon flows in a microbial mat involving anaerobic oxidation of methane in northwestern Black Sea: perspectives from nitrogen and carbon isotopic composition of coenzyme F430 and its biosynthetic pathway

Progress in Earth and Planetary Science
Coenzyme F430, a nickel-containing tetrapyrrole, serves as a cofactor for methyl-coenzyme M reductase (MCR), which catalyzes both the final step of methanogenesis and the initial step of anaerobic oxidation of methane (AOM).
Masanori Kaneko, Yoshinori Takano, Yuta Isaji, Nanako O. Ogawa, Yoshito Chikaraishi, Naoto F. Ishikawa, Hiroyuki Imachi, Yoshihiro Takaki, Miyuki Ogawara, Fumie Kabashima, Martin Krüger, Naohiko Ohkouchi   +11 more
doaj   +1 more source

Spatial Heterogeneity in Methane Biogeochemistry and Prokaryotic Community Structure in Sub‐Arctic Waterbodies in Northern Canada

Environmental Microbiology, Volume 27, Issue 12, December 2025.
Prokaryotic communities and methane dynamics differed markedly across 16 sub‐Arctic waterbodies. Maximum depth and permafrost thaw emerged as key drivers, with non‐stratified thaw‐affected sites hosting distinct communities and elevated methane fluxes, highlighting their potential role as emerging hotspots of methane emissions.
Arthur Szylit, Urania Christaki, Maialen Barret, Léa Cabrol, Laure Gandois, Antoine Sejourne, Frédéric Bouchard, Sarah Ollivier, Ludwig Jardillier   +8 more
wiley   +1 more source

Niche Differentiation of Sulfate- and Iron-Dependent Anaerobic Methane Oxidation and Methylotrophic Methanogenesis in Deep Sea Methane Seeps

Frontiers in Microbiology, 2020
Methane seeps are widespread seafloor ecosystems shaped by complex physicochemical-biological interactions over geological timescales, and seep microbiomes play a vital role in global biogeochemical cycling of key elements on Earth.
Haizhou Li, Qunhui Yang, Huaiyang Zhou
doaj   +1 more source

Activity and interactions of methane seep microorganisms assessed by parallel transcription and FISH-NanoSIMS analyses [PDF]

, 2015
To characterize the activity and interactions of methanotrophic archaea (ANME) and Deltaproteobacteria at a methane-seeping mud volcano, we used two complimentary measures of microbial activity: a community-level analysis of the transcription of four ...
Chadwick, Grayson L., Connon, Stephanie A., Dekas, Anne E., Orphan, Victoria J., Trembath-Reichert, Elizabeth   +4 more
core   +2 more sources

Biogeochemical Activity of Methane-Related Microbial Communities in Bottom Sediments of Cold Seeps of the Laptev Sea

Microorganisms, 2023
Bottom sediments at methane discharge sites of the Laptev Sea shelf were investigated. The rates of microbial methanogenesis and methane oxidation were measured, and the communities responsible for these processes were analyzed.
Alexander S. Savvichev, Igor I. Rusanov, Vitaly V. Kadnikov, Alexey V. Beletsky, Elena E. Zakcharova, Olga S. Samylina, Pavel A. Sigalevich, Igor P. Semiletov, Nikolai V. Ravin, Nikolay V. Pimenov   +9 more
doaj   +1 more source

Consumption of Methane and CO_2 by Methanotrophic Microbial Mats from Gas Seeps of the Anoxic Black Sea [PDF]

, 2007
The deep anoxic shelf of the northwestern Black Sea has numerous gas seeps, which are populated by methanotrophic microbial mats in and above the seafloor.
Boetius, Antje, Gieseke, Armin, House, Christopher H., Knittel, Katrin, Orphan, Victoria J., Treude, Tina   +5 more
core   +1 more source

Synchronization in large directed networks of coupled phase oscillators

, 2005
We extend recent theoretical approximations describing the transition to synchronization in large undirected networks of coupled phase oscillators to the case of directed networks.
Brian R. Hunt, Edward Ott, Jadbabaie A., Juan G. Restrepo   +3 more
core   +1 more source