Results 41 to 50 of about 1,008,339 (282)

The Prominent Spring Bloom and Its Relation to Sea‐Ice Melt in the Sea of Okhotsk, Revealed by Profiling Floats

open access: yesGeophysical Research Letters, 2021
Seven profiling floats equipped with oxygen sensors deployed in the Sea of Okhotsk provide time series data for 33 cases of spring phytoplankton bloom period, including 9 cases in which sea ice existed just before the bloom (prior‐ice case).
S. Kishi   +5 more
doaj   +1 more source

Regionally variable contribution of dissolved organic phosphorus to marine annual net community production

open access: yesGlobal Biogeochemical Cycles, 2022
AbstractMarine dissolved organic phosphorus (DOP) serves as an organic nutrient to marine autotrophs, sustaining a portion of annual net community production (ANCP). Numerical models of ocean circulation and biogeochemistry have diagnosed the magnitude of this process at regional to global scales but have thus far been validated against DOP ...
Robert T. Letscher   +3 more
openaire   +1 more source

Oxygen Profiles Across the Sea-Surface Microlayer—Effects of Diffusion and Biological Activity

open access: yesFrontiers in Marine Science, 2019
Gas exchange across the air-water interface is strongly influenced by the uppermost water layer (< 1 mm), the sea-surface microlayer (SML). However, a clear understanding about how the distinct physicochemical and biological properties of the SML ...
Janina Rahlff   +6 more
doaj   +1 more source

Different flavours of oxygen help quantify seasonal variations of the biological carbon pump in the Celtic Sea

open access: yesFrontiers in Marine Science, 2023
Shelf seas represent only 10% of the World’s Ocean by area but support up to 30% of its primary production. There are few measurements of biological production at high spatial and temporal resolution in these physically and biologically dynamic systems ...
Isabel Seguro   +3 more
doaj   +1 more source

A Manipulative Field Experiment to Evaluate the Impact of Discarded Plastic Bags on Shallow Vegetated Benthic Communities

open access: yesFrontiers in Marine Science, 2022
Coastal regions are biologically active areas with significant ecological and socioeconomic values. These regions are increasingly being affected by marine litter.
Kaire Torn   +3 more
doaj   +1 more source

The Importance of the Phytoplankton “Middle Class” to Ocean Net Community Production [PDF]

open access: yesGlobal Biogeochemical Cycles, 2020
AbstractThe net balance between photosynthesis and respiration in the surface ocean is a key regulator of ocean‐atmosphere carbon dioxide (CO2) partitioning, and by extension, Earth's climate. The slight excess of photosynthesis over community respiration in sunlit waters, known as net community production (NCP), sets the upper bound on the ...
Lauren W. Juranek   +8 more
openaire   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

open access: yesFEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang   +5 more
wiley   +1 more source

SISI: A New Device for In Situ Incubations at the Ocean Surface

open access: yesJournal of Marine Science and Engineering, 2017
The sea-surface microlayer (SML) forms the uppermost boundary layer between atmosphere and ocean, and has distinctive physico-chemical and biological features compared to the underlying water.
Janina Rahlff   +2 more
doaj   +1 more source

Dissolved oxygen dynamics during a phytoplankton bloom in the Ross Sea polynya [PDF]

open access: yes, 2015
The Ross Sea polynya is one of the most productive regions in the Southern Ocean. However, limited access and high spatio-temporal variability of physical and biological processes limit the use of conventional oceanographic methods to measure early ...
Asper   +6 more
core   +3 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

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