There is growing interest in the co-culture of macroalgae and filter-feeding bivalves due to anticipated trophic benefits that may enhance the productivity of both organisms. Detritus from cultured m...

Abstract. We have investigated the impact of riming on the deuterium excess (d-excess = δ2H − 8 ⋅ δ18O) of precipitation. In mixed-phase clouds, precipitation forms by vapor deposition, where supercoo...

Abstract. Residual nitrate remains a stoichiometric bottleneck limiting advanced nitrogen removal in anaerobic ammonium oxidation (anammox) processes. The

Combining long climate-isotope simulations with deep-sea oxygen isotope records, the Miocene Climatic Optimum (15 Ma) is estimated to have been 7.5∘C warmer than preindustrial -- 30% above e...

An age-depth model for core R14 was constructed using radiocarbon dating of total hydrolyzable amino acids Sea-level rise enhanced terrestrial organic matter delivery during transgressions Chemi...

N2 fixation and denitrification were concomitantly higher during the last glacial maximum in the Arabian Sea N2 fixation and denitrification were more intense in the northern Arabian Sea than in ...

A novel intact chamber method was used to measure in situ denitrification, anammox, and DNRA rates in mangrove-saltmarsh habitats Denitrification rates were higher than DNRA, both were higher in ...

Nitrogen isotope tracer incubations were conducted to assess the impact of sulfide on different nitrogen cycling processes in the marine oxygen minimum zone (OMZ) Sulfide addition mostly enhanced...

Multi-substrate tracer incubations constrain oxygen-dependent partitioning of potential epipelagic nitrous oxide production Hybrid isotopocule signatures indicate widespread coupling among nitrog...

Abstract At least eight species of pangolins, or “scaley anteaters,” are extant today. All are classified as vulnerable, endangered or critically endangered, with the most significant threat coming from the illegal trade in pangolin scales. Radiocarbon analysis is now frequently used help monitor an

Schematic diagram showing that elevated CO2 increases C allocation to CaCO3 mineralization in Ceratostigma willmottianum.

Stable isotope analysis of human hair (δ2H, δ18O, δ13C, and δ15N) offers a non-invasive trajectory for geographic sourcing, yet its forensic application remains constrained by overlapping isotopic catchments, individual lifestyle variations, and the high risk of overinterpretation in deterministic m

Abstract. The origin of Earth’s water requires explanation of both its abundance and its elevated D/H ratio relative to the solar nebula. Previous work (As

Abstract. Pyrite sulfur isotopes (δ34Spy) and pyrite sulfur content (Spy) integrate microbial, reservoir, iron, and burial controls, complicating their int

Abstract. The abiotic synthesis of nucleotide oligomers via wet–dry cycling may have provided a source of nucleic acids necessary for the origin of primiti

Abstract. Viruses are increasingly recognized as critical regulators of microbial ecology, yet their roles in pollutant degradation remain largely unexplor

Abstract. Pyrite oxidation generates sulfate and acidity in sulfide-bearing mine soils, but how structural carbon suppresses this process remains unresolve

Abstract. High-altitude rivers on the Qinghai-Tibetan Plateau serve as distinctive photochemical reactors, where intense solar radiation interacts with anc

Abstract. Despite stringent SO2 emission reductions, particulate sulfate (SO42–) concentrations often exhibit a nonlinear response. To reconcile this discr

Abstract. Lake biofilms are microbial habitats for nitrogen transformation, but how carrier type and elevation influence N2O dynamics remains unclear. We e

Abstract. Stable carbon isotope ratio measurements (δ13C) are traditionally performed by isotope ratio mass spectrometry (IRMS), but recent advances in hig

Abstract. Coenzyme A is an essential cofactor synthesized from pantothenate, which carries activated acyl groups in cellular metabolic reactions. Coenzyme

Abstract. Accurate quantification of total milk protein allergens in foods remains challenging due to processing-induced alterations in whey-to-casein rati

Coral δ18O reveals decadal variability of TC precipitation from 1906 to 2012 CE Atlantic Multidecadal Oscillation and solar forcing dominate the low-frequency variability of TC precipitation in t...

Scattered shrubs primarily utilize deep soil water, while clumped shrubs rely on shallow soil water Scattered shrubs adopt an active deep-water acquisition with conservative water utilization str...

Shallow soil water dominated plant uptake during late wet-season sampling Surface organic layer water contributed approximately 10%–15% to plant water uptake Omitting surface organic layer water...

Western Iberia hydroclimate shows an early to mid-Holocene trajectory from wet to arid conditions, with a more variable late Holocene Latitudinal temperature gradients shaped storm tracks and con...

Northern Adriatic runoff pulses likely drove stratification, organic matter export, and reduced oxygen renewal during sapropel deposition Lamina scale record reveals seasonal stratification and m...

N2 fixation and denitrification were concomitantly higher during the last glacial maximum in the Arabian Sea N2 fixation and denitrification were more intense in the northern Arabian Sea than in ...

The linear relationships between stable water isotopes (δ18O and δ2H) in precipitation are the cornerstone of isotope hydrology. These relationships underpin investigations of groundwater and surface water provenance, recharge, and hydrological processes across spatiotemporal scales. While these def

Abstract. Compound-specific stable isotope analysis (CSIA) is widely used to distinguish sources and transformation pathways of organic compounds. In stero

Abstract. Mapping the subcellular partitioning of therapeutics is important for understanding their trafficking, mechanisms of action, and off-target effec

IntroductionNutrient enrichment in coral reef systems is increasingly recognised as a major driver of ecological change, yet integrated assessments across gr...

Dissolved inorganic carbon (DIC) correlates with salinity in Kongsfjorden, reflecting the influence of freshwater inputs Δ14C and δ13C measurements of DIC show weak vertical gradients in Kongsfjo...

El Niño–Southern Oscillation (ENSO) modulates Southeastern China hydroclimate through seasonal precipitation redistribution The Western Pacific Subtropical High serves as a circulation bridge lin...

Soil δ15N varies widely across a tropical savanna and is driven primarily by bottom-up factors rather than top-down disturbances Among bottom-up drivers, greater N-fixing tree cover and higher so...

Coastal eutrophication driven by anthropogenic nitrogen (N) is a major pressure on estuarine ecosystems. Here, we analyzed stable N isotopes (δ15N) an…

Sequential Artificial Intelligence (AI) captures seasonal soil moisture and isotope patterns from climate and land use data; post-rainfall dynamics are more uncertain AI preferentially learns com...

A late Cenomanian shallow-marine fossil biota has been discovered in central Tibet This biota records the final marine phase prior to the initial uplift of central Tibet Isotopic analyses of fos...

The large functional diversity in our dryland plant community results in significant variations in water and nutrient input mixture optimization across co-occurring species. Our findings provide expe...

Abstract Large Igneous Provinces emplacement drives mass extinctions through rapid carbon release, but the relative contributions of magmatic degassing versus thermogenic decarbonation remain debated. Here, we incorporate temperature‐dependent thermal parameters into models of contact metamorphism a

A river water isotope model is established based on random forest model and generated contour maps of river water δ18O δ18O increases from South to North while d-excess increases from West to Eas...

Atmospheric contributions were minimal (5 ± 3%) to nitrate in major rivers of Europe, Asia, and North America Non-point source (30 ± 9%) was below prior estimates (>60%), yet wastewater (37 ± 8%)...

δ13C-CH4 and δ2H-CH4 of peatland emissions are both variable and show opposing relationships with CH4 fluxes Combined δ13C and δ2H patterns indicate a seasonal shift from hydrogenotrophic to acet...

Ocean particles are a heterogeneous collection, including living and dead cells, feces, mucus-rich aggregates, and mineral shells and frustules. In the well-lit upper ocean, phototrophic processes fu...

Although significant N2 fixation rates (NFRs) have been observed throughout mid-Atlantic coastal waters, studies have been limited in their temporal coverage, and the methods used to detect nitrogen ...

Invasive mammals have severely impacted oceanic islands, reducing or extirpating seabird populations and driving the collapse of nutrient flows with lasting ecosystem effects. We investigated these d...

Using stable isotopes (15N, 13C) we identified four trophic groups of oribatid mites (phytophagous, secondary decomposers, predators/scavengers and lichen feeders) on Svalbard; primary decomposers we...