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
Organic matter degradation causes enrichment of organic pollutants in hadal sediments [PDF]
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 +8 more
doaj +2 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 +7 more
doaj +2 more sources
Hadal Biodiversity, Habitats and Potential Chemosynthesis in the Java Trench, Eastern Indian Ocean [PDF]
Frontiers in Marine Science, 2022 The Java Trench is the only subduction trench in the Indian Ocean that extends to the hadal zone (> 6,000 m water depth), and except for sevenbenthic trawls acquired around the 1950s, there has been little to no sampling at hadal depths undertaken ...
Alan J. Jamieson +6 more
doaj +4 more sources
Metabolically diverse microorganisms mediating hydrocarbon cycling in the subseafloor sediment of the Challenger Deep [PDF]
mBioHadal subseafloor sediments host abundant and active microbial biosphere with considerable heterotrophic activity. However, carbon and nutrient cycling processes and mechanisms driven by hadal subsurface microorganisms remain poorly understood.
Xinxin He +14 more
doaj +2 more sources
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 +8 more
doaj +2 more sources
Removal of dissolved organic carbon in the West Pacific hadal zones [PDF]
Nature CommunicationsThe deep oceans are environments of complex carbon dynamics that have the potential to significantly impact the global carbon cycle. However, the role of hadal zones, particularly hadal trenches (water depth > 6 km), in the oceanic dissolved organic ...
Mengfan Chu +18 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.
Bruce H. Robison
wiley +2 more sources
Hitch‐hiking in the deep sea: Amphipods embrace sea spiders in the Southeast Pacific Ocean [PDF]
EcologyEcology, Volume 107, Issue 9, September 2026.
Jorge Pérez‐Schultheiss +4 more
wiley +2 more sources
The supergiant amphipod Alicella gigantea may inhabit over half of the world’s oceans [PDF]
Royal Society Open ScienceThe deep-sea amphipod Alicella gigantea Chevreux, 1899, currently known as the world’s largest amphipod, inhabits depths of the lower abyssal and upper hadal zones. Historically, it has been sampled or observed in situ infrequently relative to other deep-
Paige J. Maroni +2 more
doaj +2 more sources