Results 31 to 40 of about 59,987 (246)

The Ocean's Biological Carbon Pump as Part of the Global Carbon Cycle. [PDF]

open access: yesLimnology and Oceanography e-Lectures, 2014
SummaryThe Biological Carbon Pump includes all those processes in the ocean that cause organic carbon formed photosynthetically by phytoplankton (primary production) in the sunlit surface layer (the euphotic zone) to be removed from contact with the atmosphere.
Susanne Neuer   +2 more
openaire   +3 more sources

The Ocean's Biological Pump: In Situ Oxygen Measurements in the Subtropical Oceans

open access: yesGeophysical Research Letters, 2022
The magnitude and distribution of the ocean's biological pump (the downward flux of organic carbon (OC) from the ocean surface) influences the pCO2 of the atmosphere and the O2 content of the deep sea, but has not been well quantified.
Steven Emerson, Bo Yang
doaj   +1 more source

The Changing Biological Carbon Pump of the South Atlantic Ocean [PDF]

open access: yesGlobal Biogeochemical Cycles
Abstract Global marine anthropogenic CO 2 inventories have traditionally emphasized the North Atlantic's role in the carbon cycle, while Southern hemisphere processes are less understood.
Louise Delaigue   +3 more
openaire   +3 more sources

The Seasonal Flux and Fate of Dissolved Organic Carbon Through Bacterioplankton in the Western North Atlantic

open access: yesFrontiers in Microbiology, 2021
The oceans teem with heterotrophic bacterioplankton that play an appreciable role in the uptake of dissolved organic carbon (DOC) derived from phytoplankton net primary production (NPP).
Nicholas Baetge   +7 more
doaj   +1 more source

Global database of surface ocean particulate organic carbon export fluxes diagnosed from the 234Th technique [PDF]

open access: yesEarth System Science Data, 2013
The oceanic biological carbon pump is an important factor in the global carbon cycle. Organic carbon is exported from the surface ocean mainly in the form of settling particles derived from plankton production in the upper layers of the ocean.
F. A. C. Le Moigne   +3 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Global upper ocean dissolved oxygen budget for constraining the biological carbon pump

open access: yesCommunications Earth & Environment
One mechanism by which the ocean uptakes carbon dioxide is through the biological carbon fixation and its subsequent transport to the deep ocean, a process known as the biological carbon pump.
Ryohei Yamaguchi   +3 more
doaj   +1 more source

Avidin is evolutionarily conserved in fish but dispensable for development and resistance against Streptococcus agalactiae in zebrafish

open access: yesFEBS Open Bio, EarlyView.
The presence of biotin‐binding avidin proteins in fish and their biological significance are poorly characterized. We cataloged fish avidins and demonstrate that they are widely present and evolutionarily conserved. We created avd knockout zebrafish and show that zebavidin is dispensable for development and that resistance of avd knockout embryos in ...
Anni K. Saralahti   +5 more
wiley   +1 more source

Mycophenolate Mofetil Treatment Reduces the Risk of Treatment Escalation Due to Vascular Complications in Limited Cutaneous Systemic Sclerosis: Emulation of a Target Trial From the Italian Rheumatology Society SPRING Registry

open access: yesArthritis Care &Research, EarlyView.
Objective Mycophenolate mofetil (MMF) use in limited cutaneous systemic sclerosis (lcSSc) is relatively uncommon because of the lower fibrotic burden and the predominance of vascular complications. In vitro observations and clinical data from transplanted patients suggest a protective effect of MMF on endothelial function.
Enrico De Lorenzis   +77 more
wiley   +1 more source

Enhanced North Pacific biological pump contributed to atmospheric carbon dioxide plateau during the Bølling-Allerød period

open access: yesCommunications Earth & Environment
Carbon dioxide release from the Southern Ocean is generally recognized as a primary factor driving atmospheric carbon dioxide rise during the deglaciation; however, the Bølling-Allerød period saw an atmospheric carbon dioxide plateau, despite diminished ...
Xiaowei Zhu   +4 more
doaj   +1 more source

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