Results 51 to 60 of about 4,030 (202)

A contemporary perspective on hadal science [PDF]

open access: yesDeep Sea Research Part II: Topical Studies in Oceanography, 2018
Abstract The hadal zone (6000–~ 11,000 m deep) arguably represents the last great frontier in marine science. Although scientific endeavour in these deepest ecosystems has been slow relative to other more accessible environments, progress is steadily being made, particularly in the last 10 years.
openaire   +2 more sources

Microplastics and synthetic particles ingested by deep-sea amphipods in six of the deepest marine ecosystems on Earth [PDF]

open access: yesRoyal Society Open Science, 2019
While there is now an established recognition of microplastic pollution in the oceans, and the detrimental effects this may have on marine animals, the ocean depth at which such contamination is ingested by organisms has still not been established. Here,
A. J. Jamieson   +5 more
doaj   +1 more source

The Multi-Ocean Distribution of the Hadal Amphipod, Hirondellea dubiaDahl, 1959 (Crustacea, Amphipoda)

open access: yesFrontiers 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   +1 more source

Metabolic rates are significantly lower in abyssal Holothuroidea than in shallow-water Holothuroidea [PDF]

open access: yes, 2018
Recent analyses of metabolic rates in fishes, echinoderms, crustaceans and cephalopods have concluded that bathymetric declines in temperature- and mass-normalized metabolic rate do not result from resource-limitation (e.g. oxygen or food/chemical energy)
Brown, Alastair   +5 more
core   +3 more sources

Three new deep-sea species of Thyasiridae (Mollusca: Bivalvia) from the northwestern Pacific Ocean

open access: yesEuropean Journal of Taxonomy, 2023
The Thyasiridae is one of the species-richest families in the abyssal and hadal zones of the northwestern Pacific Ocean. Many thyasirid species dominate benthic communities in terms of abundance and play an important role in the functioning of deep-sea ...
Gennady M. Kamenev
doaj   +1 more source

Metal Accumulations in Two Extreme-Environment Amphipods, Hadal Eurythenes gryllus and Antarctic Pseudorchomene plebs

open access: yesJournal of Marine Science and Engineering, 2023
The hadal zone and Antarctic Ocean are two of the least-explored habitats. Knowledge about human impacts on these two extreme environments is limited. Here, we analyzed the metal accumulations of two amphipod species, Eurythenes gryllus, from the Mariana
Shaojun Huang   +6 more
doaj   +1 more source

Vertically distinct microbial communities in the Mariana and Kermadec trenches. [PDF]

open access: yesPLoS ONE, 2018
Hadal trenches, oceanic locations deeper than 6,000 m, are thought to have distinct microbial communities compared to those at shallower depths due to high hydrostatic pressures, topographical funneling of organic matter, and biogeographical isolation ...
Logan M Peoples   +8 more
doaj   +1 more source

Perspectives on the Terrestrial Organic Matter Transport and Burial along the Land-Deep Sea Continuum: Caveats in Our Understanding of Biogeochemical Processes and Future Needs [PDF]

open access: yes, 2016
The natural carbon cycle is immensely intricate to fully understand its sources, fluxes and the processes that are responsible for their cycling in different reservoirs and their balances on a global scale.
Bejugam Nagender Nath   +1 more
core   +2 more sources

An ultraviolet–visible spectroscopy system for studying real‐time pressure effects on enzyme activity

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Investigations of hydrostatic pressure effects on microbial enzymatic processing are challenging but critical for understanding element cycling in the world's oceans. In this study, we developed and tested a stainless‐steel pressure cell capable of withstanding up to 110 MPa of hydrostatic pressure (equivalent to ~ 11,000 m depth), featuring ...
Maria Papadimitraki   +6 more
wiley   +1 more source

Development of a Hadal Microbial In Situ Multi-Stage Filtering and Preserving Device

open access: yesJournal of Marine Science and Engineering, 2021
The unique environment of the hadal zone has created material circulation patterns and biological gene characteristics. Microbes play an irreplaceable role in the ocean ecological environment and material circulation due to their pervasiveness, abundance,
Dongrui Ruan   +5 more
doaj   +1 more source

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