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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 4
Subsurface leaf and root litter enhance soil carbon formation compared to surface litter: Direct evidence from a 13C‐labelled incubation experiment - Zhang - 2026 - Functional Ecology #stableisotopes besjournals.onlinelibrary.wiley.com/doi/full/10....
Subsurface leaf and root litter enhance soil carbon formation compared to surface litter: Direct evidence from a 13C‐labelled incubation experiment

Read the free Plain Language Summary for this article on the Journal blog.

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 4
Plant–plant nitrogen transfer is prevalent in a semi‐arid shrubland and affects the foliar N content of recipient plants - González‐Díaz - 2026 - Functional Ecology #stableisotopes besjournals.onlinelibrary.wiley.com/doi/full/10....
Plant–plant nitrogen transfer is prevalent in a semi‐arid shrubland and affects the foliar N content of recipient plants

Read the free Plain Language Summary for this article on the Journal blog.

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 4
Inferring bird migration from bone isotopes and histology: A fossil‐friendly methodological framework - Duhamel - 2026 - Methods in Ecology and Evolution #stableisotopes besjournals.onlinelibrary.wiley.com/doi/full/10....
Inferring bird migration from bone isotopes and histology: A fossil‐friendly methodological framework

Bird seasonal migration is a remarkable biogeographic phenomenon, yet its deep-time origin(s) and evolutionary history remain poorly understood, with the bird fossil record largely overlooked. Thi...

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 4
Plant diversity changes the trophic position of Collembola in temperate grassland #stableisotopes www.sciencedirect.com/science/arti...
Plant diversity changes the trophic position of Collembola in temperate grassland

Biodiversity loss threatens ecosystem functions, including decomposition and nutrient cycling. We investigated whether Collembola (springtails), key s…

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 4
Exploring the Dietary Preferences of Limnic Supraglacial Consumers: 13C and 15N Isotopic Food Labelling in Tardigrades and Rotifers From Cryoconite Holes #stableisotopes onlinelibrary.wiley.com/doi/full/10....
Exploring the Dietary Preferences of Limnic Supraglacial Consumers: 13C and 15N Isotopic Food Labelling in Tardigrades and Rotifers From Cryoconite Holes

Cryoconite holes are among the most biologically active and diverse limnic habitats on glacier surfaces. The apex cryoconite consumers, tardigrades and rotifers, are known to contribute significan...

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 4
Deciphering Sulfur-Based Denitrification in Confined Alluvial-Lacustrine Aquifers through Multi-isotope (15N, 34S, 13C, and 18O) and Metagenomic Analyses | Environmental Science & Technology pubs.acs.org/doi/10.1021/... #stableisotopes
Deciphering Sulfur-Based Denitrification in Confined Alluvial-Lacustrine Aquifers through Multi-isotope (15N, 34S, 13C, and 18O) and Metagenomic Analyses

Sulfur-based denitrification offers unique advantages in nitrogen removal in low-carbon environments. Despite its importance, the prevalence, controlling factors, and microbial mediators of sulfur-based denitrification in aquifers remain largely unknown. By integrating multiple stable isotopes and genome-resolved metagenomics, we investigated the coupling of nitrogen and sulfur cycling along the groundwater flowpath from unconfined to confined alluvial-lacustrine aquifers in the Poyang Lake Plain, China. Isotope (i.e., δ15N–NO3–, δ18O–NO3–, δ34S–SO42–, δ18O–SO42–, δ18O–H2O, δ13C-DIC, and δ13C-DOC) fractionation and hydrogeochemical trends indicated a transition from nitrification-dominated processes in the unconfined aquifer to denitrification, sulfide oxidation, and sulfate reduction in the confined aquifer. A significant negative correlation between δ34S–SO42– and δ15N–NO3–, along with a significant positive correlation between genes involved in sulfide oxidation and nitrate reduction, suggested cryptic coupling between sulfide oxidation and nitrate reduction. Sulfur-autotrophic denitrifying metagenome assembly genomes encoding Calvin–Benson–Bassham carbon fixation and rTCA pathways, such as Burkholderiales, Rhodocyclaceae, and Sulfurimonas, were enriched in the confined aquifer and co-occurred with sulfate reducers (Pseudomonadota and Desulfobacterota). These results highlighted sulfur cycling consortia when sulfate was reduced to facilitate removal of nitrate via sulfur-based denitrification. These findings reveal the role of cryptic sulfur cycling in sustaining denitrification in aquifers, offering new insights into nitrogen–sulfur interactions in subsurface ecosystems.

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 4
Nitrogen Fixation Associated with Microcystis Colonies Promotes Harmful Cyanobacterial Blooms across North American Lakes | Environmental Science & Technology pubs.acs.org/doi/10.1021/... #stableisotopes
Nitrogen Fixation Associated with Microcystis Colonies Promotes Harmful Cyanobacterial Blooms across North American Lakes

Microcystis forms harmful cyanobacterial algal blooms around the world, including regions with low inorganic nitrogen (N) concentrations. Here, we measured the N2 fixation rates of isolated Microcystis colonies, free-living plankton, and the whole plankton community during dense Microcystis blooms over a three year period in six diverse lakes across eastern North America including Lake Erie. For five of six lakes, rates within the colony fraction were greater than the rates measured for free-living plankton (p < 0.05). N2 fixation rates were inversely correlated with the rates of ammonium uptake by the colony fraction (p < 0.05), and in experiments, ammonium significantly reduced N2 fixation rates within the colony fraction by 50–85% (p < 0.001). In several lakes, the δ15N of isolated colonies was lower (p < 0.05) than that of free-living plankton presumably due to the preferential use of 14N2 by diazotrophic, colony-associated plankton. Cyanobacterial and noncyanobacterial nifH sequences were associated with the Microcystis colonies with the nifH-based diversity of both groups being lower in colonies compared to free-living plankton. Compared to nitrate, ammonium, and urea uptake, N2 fixation rates accounted for 1–76% of total N assimilation by the Microcystis colony fraction and averaged 18% across systems, suggesting this process could support the proliferation of Microcystis blooms.

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 4
Ammonium and N₂O production pathways in quaternary hill–plain groundwater: Evidence from multi-isotope and isotopomer analysis #stableisotopes www.sciencedirect.com/science/arti...
Ammonium and N₂O production pathways in quaternary hill–plain groundwater: Evidence from multi-isotope and isotopomer analysis

Ammonium (NH₄⁺) and nitrous oxide (N₂O) are key reactive nitrogen species in aquatic systems, with implications for water quality and greenhouse gas e…

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Prof. Rhiannon Stevens nannonstevens.bsky.social · Feb 4
Job alert! 3 year post doc in my research group at University College London working on Roman Leather via biomolecular archaeology. #ZooMS #stableisotopes www.jobs.ac.uk/job/DQJ187/r...
Research Fellow in Biomolecular Archaeology at UCL

Searching for an academic job? Explore this Research Fellow in Biomolecular Archaeology opening on jobs.ac.uk! Click to view more details and browse other academic jobs.

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 4
Applications of stable isotopes in lipid metabolic tracing and lipidomics analysis #stableisotopes www.sciencedirect.com/science/arti...
Applications of stable isotopes in lipid metabolic tracing and lipidomics analysis

Lipids are structurally diverse and functionally critical biomolecules playing key roles in energy storage, signal transduction, and membrane formatio…

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 4
Orbital Variability in Grazing Proportion: New Insights From Sedimentary Amino Acid δ15N Records of the Western Equatorial Pacific - Li - 2026 - AGU Advances #stableisotopes agupubs.onlinelibrary.wiley.com/doi/full/10....
Orbital Variability in Grazing Proportion: New Insights From Sedimentary Amino Acid δ15N Records of the Western Equatorial Pacific

Well-preserved amino acid δ15N tracks isotopic changes in upper ocean nutrient and the trophic structure of the western equatorial Pacific The grazing proportion exhibits distinct precessional va...

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 4
Ten-year 15N labeling reveals the nitrogen retention threshold for maximizing carbon sequestration in a temperate forest | PNAS www.pnas.org/doi/10.1073/... #stableisotopes
Ten-year 15N labeling reveals the nitrogen retention threshold for maximizing carbon sequestration in a temperate forest | PNAS

Anthropogenic nitrogen (N) deposition comprising reduced (NHx) and oxidized (NOy) forms, differentially influences ecosystem processes. However, th...

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 2
Sun, Y., Ishikawa, N.F., Ogawa, N.O. et al. Carbon isotopic changes of 16 proteinogenic amino acids during trophic transfer in a cultured marine consumer. Prog Earth Planet Sci 13, 9 (2026). doi.org/10.1186/s406... #stableisotopes
Carbon isotopic changes of 16 proteinogenic amino acids during trophic transfer in a cultured marine consumer - Progress in Earth and Planetary Science

Stable carbon isotopic compositions of amino acids (δ13CAA) in organisms potentially record information on carbon sources and flow in food webs. In this study, we report δ13C values of 16 proteinogeni...

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 2
Dynamics of sulfate and nitrate in a temperate stream network: combining multi-isotope analysis and generalized linear mixed-effects models for precautionary conservation. #stableisotopes Prog Earth Planet Sci 13, 1 (2026). doi.org/10.1186/s406...
Dynamics of sulfate and nitrate in a temperate stream network: combining multi-isotope analysis and generalized linear mixed-effects models for precautionary conservation - Progress in Earth and Plane...

Environmental pollution in stream networks is a major concern. In this study, the effects of land-use and geological characteristics on basin-scale sulfate and nitrate dynamics in the Chikusa River ba...

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 2
Drivers of Deposited Nitrogen Retention and Its Contribution to Carbon Sequestration in Chinese Forests #stableisotopes onlinelibrary.wiley.com/doi/abs/10.1...
Drivers of Deposited Nitrogen Retention and Its Contribution to Carbon Sequestration in Chinese Forests

We compiled data from 15N tracer studies across forests in China to examine nitrogen (N) retention and its contribution to carbon (C) sequestration. On average, forests retain about 65% of deposited ...

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 2
Application of the Keeling plot approach in quantifying sediment organic matter sources using carbon isotopes and C/N ratios: An example from Xiaowan Reservoir, Lancang River basin, China #stableisotopes www.sciencedirect.com/science/arti...
Application of the Keeling plot approach in quantifying sediment organic matter sources using carbon isotopes and C/N ratios: An example from Xiaowan Reservoir, Lancang River basin, China

Partitioning autochthonous and allochthonous organic matter (OM) contributions to reservoir sediments is essential for accurately estimating the magni…

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 2
Impacts of snow nitrate photolysis and recycling on identification of oxidation information recorded in nitrate in Antarctica #stableisotopes www.sciencedirect.com/science/arti...
Impacts of snow nitrate photolysis and recycling on identification of oxidation information recorded in nitrate in Antarctica

The oxygen isotopes of nitrate (NO3−), specifically δ18O(NO3−) and Δ17O(NO3−), provide insights into the oxidation mechanisms responsible for NO3− for…

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 2
A common ontology for stable isotope data www.sciencedirect.com/science/arti... #stableisotopes
A common ontology for stable isotope data

Stable isotope data has broad applicability across multiple science domains. As more datasets are published and stable isotope data systems are built,…

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
Reliance on blue, green, and brown energy channels drives a shift in the trophic position of riparian spiders - Saboret - 2026 - Ecology #stableisotopes esajournals.onlinelibrary.wiley.com/doi/full/10....
Reliance on blue, green, and brown energy channels drives a shift in the trophic position of riparian spiders

Understanding the mechanisms shaping food chain length (FCL) has long been central to food web ecology. FCL is a key determinant of stability, energy flow efficiency, and biodiversity maintenance, bu....

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
Southern Ocean Sulfate Aerosol Sources Quantified From Sulfur Isotopes in Antarctic Ice Cores - Jongebloed - 2026 - Geophysical Research Letters #stableisotopes agupubs.onlinelibrary.wiley.com/doi/full/10....
Southern Ocean Sulfate Aerosol Sources Quantified From Sulfur Isotopes in Antarctic Ice Cores

Sulfur isotopes in ice cores quantify how much sulfate over the Southern Ocean comes from passive volcanic degassing versus phytoplankton A global chemical transport model underestimates the volc...

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
Carbon and Nitrogen Stable Isotopic Profiling of Chimpanzees and Monkeys in Kalinzu Forest Reserve, Uganda #stableisotopes onlinelibrary.wiley.com/doi/full/10....
Carbon and Nitrogen Stable Isotopic Profiling of Chimpanzees and Monkeys in Kalinzu Forest Reserve, Uganda

Distributions of carbon and nitrogen stable isotope ratios of primate hairs from Kalinzu Forest Reserve, Uganda.

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
The intra-annual tree-ring δ18O records from the northeastern Tibetan Plateau can reflect seasonal variations of relative humidity and the intra-annual distribution of precipitation #stableisotopes www.sciencedirect.com/science/arti...
The intra-annual tree-ring δ18O records from the northeastern Tibetan Plateau can reflect seasonal variations of relative humidity and the intra-annual distribution of precipitation

The intra-annual distribution of precipitation has a significant impact on vegetation growth in arid and semi-arid regions. Intra-annual variations in…

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
Stoichiometric regulation of nitrogen and carbon fluxes in Acropora coral facing short‐term stress of ammonium loading - Fisher - 2026 - Ecosphere #stableisotopes esajournals.onlinelibrary.wiley.com/doi/full/10....
Stoichiometric regulation of nitrogen and carbon fluxes in Acropora coral facing short‐term stress of ammonium loading

Scleractinian coral evolved under nitrogen (N)-limited conditions. The increase in N flux from anthropogenic activities to these otherwise N-depleted environments is threatening coral health and cora....

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
Earth System Model Analysis of How Astronomical Forcing Is Imprinted Onto the Marine Geological Record: The Role of the Marine Organic Carbon Cycle and Feedbacks #stableisotopes agupubs.onlinelibrary.wiley.com/doi/full/10....
Earth System Model Analysis of How Astronomical Forcing Is Imprinted Onto the Marine Geological Record: The Role of the Marine Organic Carbon Cycle and Feedbacks

The astronomical impact on marine organic carbon cycling and resulting environmental changes are evaluated in a 3D Earth system model At eccentricity maxima, marine carbon burial is promoted by s...

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
Comparison of Clumped Isotope, δ18 O, and Alkenone Proxies for Sea‐Surface Temperature off Coastal California Over the Past 4.2 Million Years - Gorin - 2026 - Paleoceanography and Paleoclimatology #stableisotopes agupubs.onlinelibrary.wiley.com/doi/abs/10.1...
Comparison of Clumped Isotope, δ18 ${\boldsymbol{\delta }}^{\mathbf{18}}$O, and Alkenone Proxies for Sea‐Surface Temperature off Coastal California Over the Past 4.2 Million Years

We compare alkenone sea-surface temperatures records with new clumped-isotope and δ18 ${\delta }^{18}$O carbonate data from a southern California upwelling site over 4.2 Myr Clumped-isotope and δ...

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
Controls on Oxygen Concentrations and δ13C in the Glacial Atlantic - Costa - 2026 - Paleoceanography and Paleoclimatology - Wiley Online Library agupubs.onlinelibrary.wiley.com/doi/abs/10.1... #stableisotopes
Controls on Oxygen Concentrations and δ13C in the Glacial Atlantic

Oxygen content was lower than modern throughout much of the glacial Atlantic Ocean Changes in preformed δ13C and oxygen were critical components of the observed difference between the last glacia...

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
A Process‐Based Model of Precipitation Isotopes, Orographic Lifting and Leaf Wax δ2H Across the Tibetan Plateau and South Asia - Hren - 2026 - Paleoceanography and Paleoclimatology - Wiley Online Library agupubs.onlinelibrary.wiley.com/doi/abs/10.1... #stableisotopes
A Process‐Based Model of Precipitation Isotopes, Orographic Lifting and Leaf Wax δ2H Across the Tibetan Plateau and South Asia

Modern water data is used to fit an orographic precipitation isotope model for the Himalaya and Tibetan Plateau region Model predictions for primary water isotopes are paired with leaf wax hydrog...

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
Eccentricity rhythms in the Oligocene-Miocene carbon cycle regulated by weathering and carbonate burial | Science Advances www.science.org/doi/10.1126/... #stableisotopes
Eccentricity rhythms in the Oligocene-Miocene carbon cycle regulated by weathering and carbonate burial

Continental weathering and shelf-basin carbonate partitioning regulate Oligocene-Miocene carbon cycling on orbital timescales.

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
Effects of fire severity on soil organic matter: a multi-isotope (C, N, H, O) comparison of wildfires and experimental burns #stableisotopes www.sciencedirect.com/science/arti...
Effects of fire severity on soil organic matter: a multi-isotope (C, N, H, O) comparison of wildfires and experimental burns

Fire severity is key in shaping soil organic matter (SOM) composition, affecting biogeochemical cycles and post-fire recovery. However, accurately ass…

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
Discrepancies in microbial nitrogen cycling among diverse karst hydrological systems: enhanced nitrate reduction potential in karst conduits #stableisotopes www.sciencedirect.com/science/arti...
Discrepancies in microbial nitrogen cycling among diverse karst hydrological systems: enhanced nitrate reduction potential in karst conduits

Karst groundwater, a critical global drinking water source, exhibits heightened vulnerability to nitrate (NO3−) contamination due to rapid hydraulic c…

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Stable Isotope Ecology (CER, Kyoto Univ.) stableisotopeecol.bsky.social · Feb 1
Zhang, J., Jin, X., Wu, Q. et al. Phosphorus source identification in a human-impacted small watershed using phosphate oxygen isotopes. #stableisotopes Aquat Sci 88, 31 (2026). doi.org/10.1007/s000...
Phosphorus source identification in a human-impacted small watershed using phosphate oxygen isotopes - Aquatic Sciences

In recent years, the interplay between emerging human activities (extensive flood prevention, water environment management, and ecological restoration) and traditional human activities (industrializat...

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