Results 141 to 150 of about 107,478 (303)

biogeochemistry

open access: yes, 2019
B. Graeme Lockaby, Mark R. Walbridge
openaire   +2 more sources

High Relevance of Fatty Acid Oxidation in a Migrating Mammal, the Nathusius' Pipistrelle (Pipistrellus nathusii)

open access: yesThe FASEB Journal, Volume 40, Issue 10, 31 May 2026.
Bats can sustain powered flight, but their reliance on fatty acid oxidation may limit long‐distance migration compared to birds. Using untargeted metabolomics, we analyzed blood metabolites of Nathusius' pipistrelle under controlled flight and migratory field conditions to identify fuel use.
Alesia Walker   +7 more
wiley   +1 more source

Editorial: The Biogeochemistry, Biophysics, Radiobiology, and Technical Challenges of Deep Subsurface Research

open access: yesFrontiers in Earth Science, 2021
Geoffrey Battle Smith   +3 more
doaj   +1 more source

Microbial Controls on Dissolved Organic Nitrogen Cycling During Long‐Term Degradation Experiments

open access: yesGeophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Dissolved organic nitrogen (DON) is critical for marine microbial growth by providing carbon and nitrogen. Although DON is rapidly cycled, some compounds within this pool can persist for long‐periods of time. To better understand how DON is cycled by marine microorganisms, we conducted 548‐day incubations using surface‐derived dissolved ...
Richard LaBrie   +5 more
wiley   +1 more source

Barium Isotopes Indicate Spatiotemporal Heterogeneity of Marine Primary Productivity During the Toarcian Oceanic Anoxic Event

open access: yesGeophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The Toarcian Oceanic Anoxic Event (T‐OAE, ∼183 Ma) was characterized by globally enhanced organic‐carbon burial and a negative carbon‐isotope excursion (N‐CIE). However, the role of marine productivity at this time, and its spatiotemporal variability, is unclear.
Wenhan Chen   +11 more
wiley   +1 more source

Backscattering by Particles of Sizes <0.2 μm in Seawater

open access: yesGeophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract We measured the angular scattering functions at 517 nm in different size fractions, including bulk and very small particles (VSP for diameters <0.2 μm), in a variety of waters ranging from coasts to open oceans and from surface to depths as deep as 3,000 m.
Xiaodong Zhang, Yuanheng Xiong
wiley   +1 more source

Physical controls on heterogeneous mesopelagic biogeochemistry. [PDF]

open access: yesCommun Earth Environ
Freilich MA, Dove LA, Merk K.
europepmc   +1 more source

Diazotroph‐Driven 210Po Scavenging Reveals a Potential Radiotracer for Marine Nitrogen Fixation

open access: yesGeophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract The role of phytoplankton, particularly diazotrophs, in affecting in situ 210Po scavenging has been little investigated. Here, we first report an enhanced 210Po deficit in a cyclonic eddy core relative to its edge in the subtropical Pacific, coinciding with an elevated integrated nitrogen fixation rate (NFR).
Weifeng Yang   +4 more
wiley   +1 more source

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