Results 41 to 50 of about 4,176,998 (193)

Long-Term Changes of Particle Flux in the Canary Basin Between 1991 and 2009 and Comparison to Sediment Trap Records Off Mauritania

open access: yesFrontiers in Earth Science, 2020
Eastern Boundary Upwelling Ecosystems (EBUEs) are associated with high biological productivity, high fish catch and they highly contribute to marine carbon sequestration.
Gerhard Fischer   +12 more
doaj   +1 more source

Subtropical Gyre Nutrient Cycling in the Upper Ocean: Insights From a Nutrient‐Ratio Budget Method

open access: yesGeophysical Research Letters, 2023
We use a nutrient‐ratio budget method to investigate the relative importance of different nutrient source and sink terms at time‐series Station ALOHA and Bermuda Atlantic Time‐series Study (BATS) in the North Pacific and North Atlantic subtropical gyres,
Yang Xiang   +3 more
doaj   +1 more source

Temporal and Spatial Variations in Particle Fluxes on the Chukchi Sea and East Siberian Sea Slopes From 2017 to 2018

open access: yesFrontiers in Marine Science, 2021
Time-series sediment traps were deployed on the Chukchi Sea and East Siberian Sea slopes from August 2017 to August 2018 with the aim of elucidating the temporal and spatial variations in particle fluxes and identifying the main processes affecting those
Ho-Jung Kim   +11 more
doaj   +1 more source

The Impact of the Amazon on the Biological Pump and the Air‐Sea CO2 Balance of the Western Tropical Atlantic

open access: yesGlobal Biogeochemical Cycles, 2021
The Amazon River strongly modifies the biogeochemistry of the Western Tropical Atlantic (WTA). To disentangle the different mechanisms driving these modifications, we conduct a series of modeling experiments with a high‐resolution regional ocean model ...
D. Louchard, N. Gruber, M. Münnich
semanticscholar   +1 more source

Zooplankton and Micronekton Active Flux Across the Tropical and Subtropical Atlantic Ocean

open access: yesFrontiers in Marine Science, 2019
Quantification of the actual amount of carbon export to the mesopelagic layer by both zooplankton and micronekton is at present a gap in the knowledge of the biological pump.
Santiago Hernández-León   +7 more
doaj   +1 more source

Bacterial Succession on Sinking Particles in the Ocean's Interior

open access: yesFrontiers in Microbiology, 2017
Sinking particles formed in the photic zone and moving vertically through the water column are a main mechanism for nutrient transport to the deep ocean, and a key component of the biological carbon pump.
Erik A. Pelve   +2 more
doaj   +1 more source

Patchy Blooms and Multifarious Ecotypes of Labyrinthulomycetes Protists and Their Implication in Vertical Carbon Export in the Pelagic Eastern Indian Ocean

open access: yesMicrobiology Spectrum, 2022
Labyrinthulomycetes protists are an important heterotrophic component of microeukaryotes in the world’s oceans, but their distribution patterns and ecological roles are poorly understood in pelagic waters.
Ningdong Xie   +9 more
doaj   +1 more source

Entropy-Driven Pumping in Zeolites and Biological Channels [PDF]

open access: yesPhysical Review Letters, 1999
When two binary solutions are separated by a permeable barrier, the individual species typically diffuse and mix, dissipating their chemical potential gradients. However, we use model lattice simulations to show that single-file molecular-sized channels (such biomembrane channels and zeolites) can exhibit diffusional pumping, where one type of particle
Chou, Tom, Lohse, Detlef
openaire   +3 more sources

Efficient Particle Transfer to Depth in Oxygen Minimum Zones of the Pacific and Indian Oceans

open access: yesFrontiers in Earth Science, 2020
The remineralization depth of sinking organic particles controls the efficiency of the biological carbon pump by setting the sequestration timescale of remineralized carbon in the ocean interior.
Thomas Weber, Daniele Bianchi
doaj   +1 more source

Microbial Eukaryote Diversity and Activity in the Water Column of the South China Sea Based on DNA and RNA High Throughput Sequencing

open access: yesFrontiers in Microbiology, 2017
To study the diversity and metabolic activity of microbial eukaryotes in the water column of the South China Sea, genomic DNA and RNA were co-extracted from samples collected down to bathyal depth at two sites.
Dapeng Xu   +5 more
doaj   +1 more source

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