Results 31 to 40 of about 525 (166)

High hydrostatic pressure shapes the development and production of secondary metabolites of Mariana Trench sediment fungi

Scientific Reports, 2021
The hadal biosphere is one of the least understood ecosystems on our planet. Recent studies have revealed diverse and active communities of prokaryotes in hadal sediment. However, there have been few studies on fungi in hadal sediment. Here we report the
Qingqing Peng, Yongqi Li, Ludan Deng, Jiasong Fang, Xi Yu   +4 more
doaj   +1 more source

Sedimentary supply of humic-like fluorescent dissolved organic matter and its implication for chemoautotrophic microbial activity in the Izu-Ogasawara Trench

Scientific Reports, 2021
Microbial community structure in the hadal water is reported to be different from that in the upper abyssal water. However, the mechanism governing the difference has not been fully understood.
M. Shigemitsu, T. Yokokawa, H. Uchida, S. Kawagucci, A. Murata   +4 more
doaj   +1 more source

The Multi-Ocean Distribution of the Hadal Amphipod, Hirondellea dubiaDahl, 1959 (Crustacea, Amphipoda)

Frontiers in Marine Science, 2022
The hadal zone (depths > 6,000 m) comprises isolated features that host high degrees of endemism, with species inhabiting only a single feature or a group of adjacent features.
Johanna N. J. Weston, Alan J. Jamieson
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

Insights into the prokaryotic communities of the abyssal-hadal benthic-boundary layer of the Kuril Kamchatka Trench

Environmental Microbiome, 2023
Background The Kuril–Kamchatka Trench (maximum depth 9604 m), located in the NW Pacific Ocean, is among the top seven deepest hadal trenches. The work aimed to investigate the unexplored abyssal-hadal prokaryotic communities of this fascinating, but ...
Susanna Gorrasi, Andrea Franzetti, Angelika Brandt, Ulrike Minzlaff, Marcella Pasqualetti, Massimiliano Fenice   +5 more
doaj   +1 more source

Bacterial and eukaryotic intact polar lipids point to in situ production as a key source of labile organic matter in hadal surface sediment of the Atacama Trench [PDF]

Biogeosciences, 2022
Elevated organic matter (OM) concentrations are found in hadal surface sediments relative to the surrounding abyssal seabed. However, the origin of this biological material remains elusive.
E. Flores, E. Flores, E. Flores, S. I. Cantarero, P. Ruiz-Fernández, P. Ruiz-Fernández, P. Ruiz-Fernández, N. Dildar, M. Zabel, O. Ulloa, O. Ulloa, J. Sepúlveda, J. Sepúlveda   +12 more
doaj   +1 more source

Trimethylamine N-Oxide (TMAO) and Trimethylamine (TMA) Determinations of Two Hadal Amphipods

Journal of Marine Science and Engineering, 2022
Hadal trenches are a unique habitat with high hydrostatic pressure, low temperature and scarce food supplies. Amphipods are the dominant scavenging metazoan species in this ecosystem.
Qi Liu, Shouwen Jiang, Wenhao Li, Binbin Pan, Qianghua Xu   +4 more
doaj   +1 more source

Composition and Ecological Roles of the Core Microbiome along the Abyssal-Hadal Transition Zone Sediments of the Mariana Trench

Microbiology Spectrum, 2022
The unique geological features of hadal trenches are known to influence both the structure and ecological function of microbial communities. It is also well known that heterotrophs and chemoautotrophs dominate the hadal and abyssal pelagic zones ...
Hongmei Jing, Xiang Xiao, Yue Zhang, Zhiyong Li, Huahua Jian, Yingfeng Luo, Zhuang Han   +6 more
doaj   +1 more source

Revealing the full biosphere structure and versatile metabolic functions in the deepest ocean sediment of the Challenger Deep

Genome Biology, 2021
Background The full biosphere structure and functional exploration of the microbial communities of the Challenger Deep of the Mariana Trench, the deepest known hadal zone on Earth, lag far behind that of other marine realms.
Ping Chen, Hui Zhou, Yanyan Huang, Zhe Xie, Mengjie Zhang, Yuli Wei, Jia Li, Yuewei Ma, Min Luo, Wenmian Ding, Junwei Cao, Tao Jiang, Peng Nan, Jiasong Fang, Xuan Li   +14 more
doaj   +1 more source

Distinctive signatures of pathogenic and antibiotic resistant potentials in the hadal microbiome

Environmental Microbiome, 2022
Background Hadal zone of the deep-sea trenches accommodates microbial life under extreme energy limitations and environmental conditions, such as low temperature, high pressure, and low organic matter down to 11,000 m below sea level.
Liuqing He, Xinyu Huang, Guoqing Zhang, Ling Yuan, Enhui Shen, Lu Zhang, Xiao-Hua Zhang, Tong Zhang, Liang Tao, Feng Ju   +9 more
doaj   +1 more source