Tectonically-triggered sediment and carbon export to the Hadal zone [PDF]
Nature Communications, 2018 Within sediments in deep ocean trenches an earthquake record may be observed. Here, the authors present 14C data on bulk organic carbon (OC) and thermal decomposition from a sediment core in the Japan Trench and match OC values with known earthquake ...
Rui Bao +6 more
doaj +8 more sources
Scavenging amphipods from the Wallaby-Zenith Fracture Zone : Extending the hadal paradigm beyond subduction trenches [PDF]
Marine Biology, 2021 Acknowledgements We would like to thank Nick Cuomo for assis- tance with lander deployments, Prof Darren Evans and Dr James Kitson (Newcastle University, UK) for bench space in the Molecular Diagno- sis Facility, Ed Hendrycks (Canadian Museum of Nature ...
Jamieson, Alan J. +6 more
core +7 more sources
Comparably Characterizing the Gut Microbial Communities of Amphipods from Littoral to Hadal Zones
Journal of Marine Science and Engineering, 2023 Amphipods are an important group of invertebrates in marine ecosystems due to their high abundance and diversity. As an essential part of the marine food web, amphipods play a vital role in nutrient recycling and provide large amounts of detritus-derived
Taoshu Wei +4 more
doaj +3 more sources
Genomic potential for mercury biotransformation in marine sediments across marginal slope to hadal zone [PDF]
Nature CommunicationsMercury accumulates in the deep sea, but its ecological impact on deep-sea ecosystems remains poorly understood. We conduct an analysis of 32 sediment cores, comprising 101 layers for the study of metagenomes, and additional 41 global reference sediment ...
Zhuobo Li +5 more
doaj +3 more sources
Polysaccharide hydrolase of the hadal zone amphipods Hirondellea gigas [PDF]
Bioscience, Biotechnology, and Biochemistry, 2018 Hirondellea species are common inhabitants in the hadal region deeper than 7,000 m. We found that Hirondellea gigas thrived in the Challenger Deep possessed polysaccharide hydrolases as digestive enzymes. To obtain various enzymes of other H.
Hideki Kobayashi +12 more
semanticscholar +5 more sources
Liparid and macrourid fishes of the hadal zone: in situ observations of activity and feeding behaviour. [PDF]
Proc Biol Sci, 2009 Using baited camera landers, the first images of living fishes were recorded in the hadal zone (6000–11 000 m) in the Pacific Ocean. The widespread abyssal macrouridCoryphaenoides yaquinaewas observed at a new depth record of approximately 7000 m in the Japan Trench.
Jamieson AJ +5 more
europepmc +7 more sources
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 +7 more
doaj +2 more sources
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 +2 more sources
Microbial community structure and functional traits involved in the adaptation of culturable bacteria within the gut of amphipods from the deepest ocean [PDF]
Microbiology SpectrumThe Hadal Zone is acknowledged for its extreme environmental conditions, especially high hydrostatic pressures. The dominant scavengers in the Hadal Zone, Hadal amphipods, fulfill vital roles in the Hadal food web and ecological niches. However, research
Yukun Cui +7 more
doaj +2 more sources
Insights into the prokaryotic communities of the abyssal-hadal benthic-boundary layer of the Kuril Kamchatka Trench [PDF]
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 +5 more
doaj +2 more sources