Results 11 to 20 of about 4,030 (202)

The Adaptive Evolution and Gigantism Mechanisms of the Hadal “Supergiant” Amphipod Alicella gigantea

Frontiers in Marine Science, 2021
Hadal trenches are commonly referred to as the deepest areas in the ocean and are characterized by extreme environmental conditions such as high hydrostatic pressures and very limited food supplies. Amphipods are considered the dominant scavengers in the
Wenhao Li, Wenhao Li, Wenhao Li, Faxiang Wang, Shouwen Jiang, Binbin Pan, Binbin Pan, Jiulin Chan, Qianghua Xu, Qianghua Xu, Qianghua Xu   +10 more
doaj   +3 more sources

High mercury accumulation in deep-ocean hadal sediments [PDF]

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   +7 more sources

Organic matter degradation causes enrichment of organic pollutants in hadal sediments

Nature Communications, 2023
Burial of persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs) in deep-sea sediments contributes to 60% of their historical emissions. Yet, empirical data on their occurrence in the deep-ocean is scarce.
Anna Sobek, Sebastian Abel, Hamed Sanei, Stefano Bonaglia, Zhe Li, Gisela Horlitz, Arka Rudra, Kazumasa Oguri, Ronnie N. Glud   +8 more
doaj   +5 more sources

Microbial Community Diversity Within Sediments from Two Geographically Separated Hadal Trenches [PDF]

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
doaj   +6 more sources

Bioturbation in the hadal zone. [PDF]

Nat Commun
Abstract The hadal zone, >6 km deep, remains one of the least understood ecosystems on Earth. We address bioturbational structures in sediment cores from depths exceeding 7.5 km, collected during the IODP Expedition 386 in the Japan Trench.
Hovikoski J, Virtasalo JJ, Wetzel A, Muthre M, Strasser M, Proust JN, Ikehara K.   +6 more
europepmc   +5 more sources

Hadal zones of the Northwest Pacific Ocean [PDF]

Progress in Oceanography, 2021
Abstract Understanding the extent of the hadal ecosystem (habitats exceeding 6000 m water depth) is convoluted due to the complexity of seafloor geomorphology that accounts for 45% of the total ocean depth range. Furthermore, at such great depths, features such as fracture zones and basins, although numerous, are less prominent and therefore have ...
Jamieson AJ, Stewart HA
openaire   +3 more sources

Loss of hepatic SMLR1 causes hepatosteatosis and protects against atherosclerosis due to decreased hepatic VLDL secretion

Hepatology, EarlyView., 2022
The role of SMLR1 in lipid metabolism (high fat + cholesterol diet in mice) Abstract Background and Aims The assembly and secretion of VLDL from the liver, a pathway that affects hepatic and plasma lipids, remains incompletely understood. We set out to identify players in the VLDL biogenesis pathway by identifying genes that are co‐expressed with the ...
Willemien van Zwol, Antoine Rimbert, Justina C. Wolters, Marieke Smit, Vincent W. Bloks, Niels J. Kloosterhuis, Nicolette C. A. Huijkman, Mirjam H. Koster, Umesh Tharehalli, Simon M. de Neck, Colin Bournez, Marceline M. Fuh, Jeroen Kuipers, Sujith Rajan, Alain de Bruin, Henry N. Ginsberg, Gerard J. P. van Westen, M. Mahmood Hussain, Ludger Scheja, Joerg Heeren, Philip Zimmerman, Bart van de Sluis, Jan Albert Kuivenhoven   +22 more
wiley   +1 more source

Metagenomic Insights Into the Structure and Function of Intestinal Microbiota of the Hadal Amphipods

Frontiers in Microbiology, 2021
Hadal trenches are the deepest known areas of the ocean. Amphipods are considered to be the dominant scavengers in the hadal food webs. The studies on the structure and function of the hadal intestinal microbiotas are largely lacking.
Jiulin Chan, Daoqiang Geng, Binbin Pan, Binbin Pan, Qiming Zhang, Qianghua Xu, Qianghua Xu, Qianghua Xu   +7 more
doaj   +1 more source

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