The seabed plays a key role in the marine carbon cycle as a) the terminal location of aerobic
oxidation of organic matter, b) the greatest anaerobic bioreactor, and c) the greatest …

Extreme marine environments cover more than 50% of the Earth's surface and offer many
opportunities for investigating the biological responses and adaptations of organisms to …

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 …

Most of our knowledge about deep-sea habitats is limited to bathyal (200–3000 m) and
abyssal depths (3000–6000 m), while relatively little is known about the hadal zone (6000 …

Anthropogenic activities have led to widespread contamination with mercury (Hg), a potent
neurotoxin that bioaccumulates through food webs. Recent models estimated that, presently …

Abstract Knowledge of sedimentary organic carbon (OC) in hadal trenches, the deepest
ocean realm, is rudimentary. Here, we conducted a comprehensive analysis of total OC …

Black carbon is ubiquitous in the marine environment. However, whether it accumulates in
the deepest ocean region, the hadal zone, is unknown. Here we measure the concentration …

Hadal trenches are considered to act as depocenters for organic material, although
pathways for the material transport and deposition rates are poorly constrained. Here we …

The trench represents an important sink of sediments as a result of the “funneling effect”,
however, the mineralogy of trench sediments and its response to environmental conditions …

The hadal zone is the deep ocean with depths exceeding 6000 m. With an area
approximately equal to the size of Australia, but constituting the deepest 45% of the vertical …