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 +6 more
doaj +4 more sources
Bioturbation in the hadal zone [PDF]
Nature CommunicationsThe 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. Micro-CT imaging on 20
Jussi Hovikoski +6 more
doaj +3 more sources
Genomic evidence on the distribution and ecological function of Pseudomonas in hadal zone [PDF]
BMC MicrobiologyThe hadal zone is the deepest region on Earth. It serves as a depositional zone for the sinking matter from surface ocean and continental margin, aided by its unique V-shaped structure.
Yongxin Lv +3 more
doaj +3 more sources
Megafaunal Community Structure From the Abyssal to Hadal Zone in the Yap Trench
Frontiers in Marine Science, 2021 Hadal trenches remain one of the unexplored ocean ecosystems due to the challenges of sampling at great depths. It is still unclear how a faunal community changes from the abyssal to the hadal zone, and which environmental variables are the key impacting
Dongsheng Zhang +18 more
doaj +3 more sources
Biodiversity of the abyssal and hadal zone in the Nova Canton Trough (Central Pacific Ocean; 2751–7989 m): a visual inventory [PDF]
Biodiversity Data JournalComprehensive biodiversity inventories of abyssal and hadal ecosystems remain rare due to the financial and logistical challenges associated with operating in the deepest parts of the ocean.
Denise Swanborn +8 more
doaj +4 more sources
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 +2 more sources
Vertical Distribution of Microbial Eukaryotes From Surface to the Hadal Zone of the Mariana Trench [PDF]
Frontiers in Microbiology, 2018 Marine microbial eukaryotes are ubiquitous, comprised of phylogenetically diverse groups and play key roles in microbial food webs and global biogeochemical cycling. However, their vertical distribution in the deep sea has received little attention.
Zhimeng Xu +14 more
doaj +2 more sources
Pelagic sea cucumbers in the Galapagos: Midwater grazers that short-circuit deep-sea carbon flux. [PDF]
EcologyEcology, Volume 107, Issue 9, September 2026.
Robison BH.
europepmc +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
Hadal Snailfishes (Teleostei: Liparidae) Extend Across Multiple Trenches: Molecular Insights and Implications for Taxonomic Nomenclature [PDF]
Ecology and EvolutionThe hadal zone, Earth's deepest oceanic region, is defined by distinct geological features and hosts a variety of endemic species, including the Liparidae Gill, 1861 (snailfishes).
Paige J. Maroni +3 more
doaj +2 more sources