Results 11 to 20 of about 98 (84)

Bulk and Active Sediment Prokaryotic Communities in the Mariana and Mussau Trenches

Frontiers in Microbiology, 2020
Surprisingly high rates of microbial respiration have recently been reported in hadal trench sediment, yet the potentially active microorganisms and specific microbe–microbe relationships in trench sediment are largely unknown.
Rulong Liu, Zixuan Wang, Li Wang, Zhenzhen Li, Jiasong Fang, Jiasong Fang, Jiasong Fang, Xing Wei, Wenxia Wei, Junwei Cao, Yuli Wei, Zhe Xie   +11 more
doaj   +1 more source

Intra- and inter-spatial variability of meiofauna in hadal trenches is linked to microbial activity and food availability

Scientific Reports, 2022
Hadal trenches are depocenters for organic material, and host intensified benthic microbial activity. The enhanced deposition is presumed to be reflected in elevated meiofaunal standing-stock, but available studies are ambiguous. Here, we investigate the
M. Shimabukuro, D. Zeppilli, D. Leduc, F. Wenzhöfer, P. Berg, A. A. Rowden, R. N. Glud   +6 more
doaj   +1 more source

High mercury accumulation in deep-ocean hadal sediments

Scientific Reports, 2021
Ocean sediments are the largest sink for mercury (Hg) sequestration and hence an important part of the global Hg cycle1. Yet accepted global average Hg flux data for deep-ocean sediments (> 200 m depth) are not based on measurements on sediments but are ...
Hamed Sanei, Peter M. Outridge, Kazumasa Oguri, Gary A. Stern, Bo Thamdrup, Frank Wenzhöfer, Feiyue Wang, Ronnie N. Glud   +7 more
doaj   +1 more source

Event Stratigraphy in a Hadal Oceanic Trench: The Japan Trench as Sedimentary Archive Recording Recurrent Giant Subduction Zone Earthquakes and Their Role in Organic Carbon Export to the Deep Sea

Frontiers in Earth Science, 2019
Hadal trenches are the deepest places on Earth and are important foci for natural carbon sequestration. Much of the sedimentary sequences that accumulate within hadal trenches have been linked to widespread slope sediment remobilization events, triggered
Arata Kioka, Arata Kioka, Tobias Schwestermann, Jasper Moernaut, Ken Ikehara, Toshiya Kanamatsu, Timothy I. Eglinton, Michael Strasser, Michael Strasser   +8 more
doaj   +1 more source

Hadal water biogeochemistry over the Izu–Ogasawara Trench observed with a full-depth CTD-CMS [PDF]

Ocean Science, 2018
Full-depth profiles of hydrographic and geochemical properties at the Izu–Ogasawara Trench were observed for the first time using a CTD-CMS (conductivity–temperature–depth profiler with carousel multiple sampling) system.
S. Kawagucci, S. Kawagucci, S. Kawagucci, S. Kawagucci, A. Makabe, A. Makabe, A. Makabe, T. Kodama, Y. Matsui, Y. Matsui, C. Yoshikawa, C. Yoshikawa, E. Ono, E. Ono, M. Wakita, T. Nunoura, T. Nunoura, H. Uchida, T. Yokokawa, T. Yokokawa   +19 more
doaj   +1 more source

Identification and genomic analysis of temperate Halomonas bacteriophage vB_HmeY_H4907 from the surface sediment of the Mariana Trench at a depth of 8,900 m

Microbiology Spectrum, 2023
Viruses play crucial roles in the ecosystem by modulating the host community structure, mediating biogeochemical cycles, and compensating for the metabolism of host cells.
Yue Su, Wenjing Zhang, Yantao Liang, Hongmin Wang, Yundan Liu, Kaiyang Zheng, Ziqi Liu, Hao Yu, Linyi Ren, Hongbing Shao, Yeong Yik Sung, Wen Jye Mok, Li Lian Wong, Yu-Zhong Zhang, Andrew McMinn, Min Wang   +15 more
doaj   +1 more source

Spatial variations of microbial communities in abyssal and hadal sediments across the Challenger Deep [PDF]

PeerJ, 2019
Microbial communities in hadal sediments are least explored in hadal zone (>6,000 m), especially in the Challenger Deep with high pressure (∼110 M pa at the bottom).
Guojie Cui, Jun Li, Zhaoming Gao, Yong Wang   +3 more
doaj   +2 more sources

Microbial Community Diversity Within Sediments from Two Geographically Separated Hadal Trenches

Frontiers in Microbiology, 2019
Hadal ocean sediments, found at sites deeper than 6,000 m water depth, are thought to contain microbial communities distinct from those at shallower depths due to high hydrostatic pressures and higher abundances of organic matter.
Logan M. Peoples, Eleanna Grammatopoulou, Michelle Pombrol, Xiaoxiong Xu, Oladayo Osuntokun, Jessica Blanton, Eric E. Allen, Clifton C. Nunnally, Jeffrey C. Drazen, Daniel J. Mayor, Daniel J. Mayor, Douglas H. Bartlett   +11 more
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Viral Infections Boost Prokaryotic Biomass Production and Organic C Cycling in Hadal Trench Sediments

Frontiers in Microbiology, 2019
Hadal trenches are among the most remote and least explored ecosystems on Earth and can support high benthic microbial standing stocks and activities. However, information on the role of viruses in such ecosystems and their interactions with prokaryotic ...
Elisabetta Manea, Antonio Dell’Anno, Eugenio Rastelli, Michael Tangherlini, Takuro Nunoura, Hidetaka Nomaki, Roberto Danovaro, Roberto Danovaro, Cinzia Corinaldesi   +8 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