Results 21 to 30 of about 2,462 (119)

Radiocarbon and Stable Carbon Isotopes Constrain Rapid Mixing and Deep Meltwater Influence on Dissolved Inorganic Carbon in an Arctic Fjord

Journal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract Increased freshwater discharge from Arctic glaciers modifies the carbonate chemistry of coastal fjords. We investigated the carbon isotopic composition (Δ14C and δ13C) of dissolved inorganic carbon (DIC) in Kongsfjorden, Svalbard, to evaluate how freshwater inputs and water‐mass exchange shape fjord carbon dynamics.
Ling Fang, Sunmin Oh, Agneta Fransson, Melissa Chierici, Jeomshik Hwang, Eun Jin Yang, Minkyoung Kim   +6 more
wiley   +1 more source

Spatial Variability in Recent Phototroph Production in a Large, Fluvial Lake Driven by Local Land‐Use Changes (St. Lawrence River, Canada)

Freshwater Biology, Volume 71, Issue 9, September 2026.
ABSTRACT Increases in lake production and the abundance of cyanobacteria have been reported in many temperate freshwater systems, with their rise typically attributed to elevated nutrient influx or climate change. On the St. Lawrence River (SLR), recent evidence suggests that cyanobacterial abundances have increased since ca. 2000, although the precise
Katherine E. Moir, Cale A. C. Gushulak, Peter R. Leavitt, Isaac Armstrong, Jeffrey J. Ridal, Brian F. Cumming   +5 more
wiley   +1 more source

Nucleotide Metabolism in Health and Disease

MedComm, Volume 7, Issue 8, August 2026.
Nucleotide metabolism, including de novo synthesis, salvage pathways, and catabolism, when dysregulated contributes to cancer, immune disorders, metabolic and urological diseases, and radiation injury. Metabolites such as adenosine, cGAMP, NAD, and cAMP and enzymes like RNR are promising therapeutic targets and biomarkers.
Xiaoying Zhao, Yiyu Zeng, Yike Xu, Shu Rao, Mouna Khouchani, Hassna Soummane, Jingyi Li, Rui Liu   +7 more
wiley   +1 more source

Subglacial Lake Discharge Affects the Age and Concentration Distribution of Dissolved Organic Carbon in Ross Sea Surface Waters

AGU Advances, Volume 7, Issue 5, August 2026.
Abstract The Ross Sea continental shelf plays a key role in the global carbon cycle. However, the sources and cycling of dissolved organic carbon (DOC) in the region are poorly understood. Here, we determined the radiocarbon (14C) and stable carbon isotope (13C) contents of DOC in addition to those of dissolved inorganic carbon (DIC) in the Little ...
Sunmin Oh, Yeongjin Ryu, Heejun Han, Taehee Na, Tae‐Wan Kim, Jisoo Park, Guebuem Kim, Ellen R. M. Druffel, Jeomshik Hwang   +8 more
wiley   +1 more source

Trade‐offs between soil biodiversity and agricultural expansion: Evidence from litter decomposition dynamics in Madagascar

Functional Ecology, Volume 40, Issue 8, Page 2560-2574, August 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Home‐Field Advantage (HFA) theory—positing that litter decomposes faster at its site of origin—allows us to disentangle the respective influences of litter quality, soil biota composition, and microclimate on shifts in litter decomposition following land use conversion.
Marie Sauvadet, Seydina Mohamad Ba, Malalatiana Razafindrakoto, Tantely Maminiaina Razafimbelo, Marie‐Paule Razafimanantsoa, Jean‐Marc Bouvet, Jean‐Michel Leong Pock Tsy, Jean Trap, Jean‐Pierre Bouillet   +8 more
wiley   +1 more source

Changing Pacific Salmon Nursery Lake Ecosystem Dynamics Over Centuries to Millennia: Insights From Sedimentary DNA Metabarcoding

Environmental DNA, Volume 8, Issue 4, July‐August 2026.
Sedimentary DNA metabarcoding tracks long‐term eukaryotic community change in Pacific salmon nursery lakes, revealing potential land‐use and climate influences on algal communities and resilience indicators. ABSTRACT Pacific salmon are keystone species in North Pacific freshwater, riparian, and marine ecosystems, but many populations have declined or ...
Yuanyu Cheng, David Walsh, Joanna Gauthier, Daniel Selbie, Irene Gregory‐Eaves   +4 more
wiley   +1 more source

Electrochemical Detection of Vanadium Using a Boron‐Doped Diamond Electrode as a Surrogate for Radioactive Heavy Metals

Electroanalysis, Volume 38, Issue 7, July 2026.
A boron‐doped diamond (BDD) electrode‐based anodic stripping voltammetry (ASV) method was developed for the electrochemical detection of radioactive heavy metals in nitric acid media using vanadium as a nonradioactive surrogate for neptunium. Systematic optimization identified an O‐terminated BDD electrode operated at a deposition potential of −1.2 V ...
Mingwei Bai, Michio Murata, Masaumi Nakahara, Yasuaki Einaga   +3 more
wiley   +1 more source

Principles of Biocompatible Nanotube Design for High‐Performance Biomaterials

WIREs Nanomedicine and Nanobiotechnology, Volume 18, Issue 4, July/August 2026.
Schematic overview of nanotube‐based biomaterials for biomedical applications. ABSTRACT Nanotubes are one‐dimensional tubular structures characterized by nanoscale radial dimensions and micrometer‐scale axial lengths. Their hollow inner cavity confers a high specific surface area and distinctive physicochemical properties, enabling remarkable potential
Yue Zhong, José A. Lebrón, María L. Moyá, Manuel López‐López, Francisco J. Ostos, Pilar López‐Cornejo   +5 more
wiley   +1 more source

Net mineralizable soil phosphorus cannot be measured by non‐isotopic approaches

Agricultural &Environmental Letters, Volume 11, Issue 1, June 2026.
Abstract While radioisotopic pool dilution is widely regarded as the most reliable method for estimating soil phosphorus mineralization (Pmin), high costs, low throughput, and safety requirements limit its use. We evaluated the potential of non‐radioisotopic approaches to estimating net Pmin by difference before and after aerobic incubation, analogous ...
Chongyang Li, Andrew J. Margenot
wiley   +1 more source

Lower and slower: Quantifying phosphorus leaching from struvite relative to monoammonium phosphate by 33P radioisotopic labeling

Geoderma
Struvite (NH4MgPO4·6H2O) is a slow-release phosphorus (P) fertilizer hypothesized to reduce nutrient leaching losses relative to highly water-soluble counterparts such as monoammonium phosphate (MAP). We assessed the leaching fate of P from struvite relative to MAP using soil column experiments for two soils representative of the United States Maize ...
Patricia Leon, Neha Chatterjee, Chongyang Li, Andrew J. Margenot   +3 more
openaire   +2 more sources