Contrasting N Form Uptake Strategies of Alpine Plant Functional Groups Under N and P Enrichment

Sedges favored NH4+ uptake and showed the strongest enhancement under moderate N addition, whereas grasses maintained flexible N-form uptake Forbs increased NO3− and glycine uptake under combined...

agupubs.onlinelibrary.wiley.com

Methane and Nitrous Oxide Reshape the Air‐Water Greenhouse Gas Budget of a Tropical Estuarine Delta

Methane and nitrous oxide strongly modify greenhouse gas balance in a tropical estuarine delta Methane and nitrous oxide offset carbon dioxide uptake and amplify emissions as the system shifts be...

agupubs.onlinelibrary.wiley.com

Warming Drives Large‐Scale Shifts in Post‐Disturbance Vegetation Dynamics and Expansion of Deciduous Trees in the Boreal Forest in a Dynamic Vegetation Model

Historic patterns of post-disturbance recovery can be well reproduced by the dynamic vegetation model LPJ-GUESS Future climate change alters recovery trajectories and leads to longer and stronger...

agupubs.onlinelibrary.wiley.com

WHONDRS_GRIN_Field_Protocol

WHONDRS Global River Image Network (GRIN) Collection Effort This protocol describes the collection of sediment photos and simple metadata to generate AI-enabled grain size and topography measurements ...

docs.google.com

Carbon, Water, and Energy Flux Dynamics in Different Cropping Systems in the Great Lakes Region

A new flux site in the Great Lakes region studied carbon-water-energy exchanges across corn, sweet potato, and tobacco cropping systems Corn years were carbon sinks; sweet potato lost C; tobacco ...

agupubs.onlinelibrary.wiley.com

Chicxulub impact dust set the dinosaurs’ world on fire

A new study has found that a thick, global blanket of dust after the Chicxulub asteroid insulated the atmosphere, trapping and radiating enough heat down to the surface to ignite worldwide wildfires a...

news.agu.org

Elevated Spring Methane Emissions in a Sub‐Arctic Peatland Fen

Negative hysteresis pattern in CH4 emissions characterized by elevated spring emissions signals potentially significant trapped CH4 in soil The cumulative annual methane budget in 2023 was 61% hi...

agupubs.onlinelibrary.wiley.com

VOCs Impact Soil Carbon Transformations and Sequestration

VOC-induced carbon (C) fate in soil depends on molecular structure, microbial metabolism, and abiotic reactivity Acetaldehyde and isoprene showed high C retention; Acetone and methanol fueled res...

agupubs.onlinelibrary.wiley.com

Multi‐Year Continuous Lateral Fluxes of Dissolved Carbon From a Microtidal Saltmarsh

Lateral dissolved carbon export was almost twice the soil carbon burial at this salt marsh in the Barataria Basin Dissolved inorganic carbon made up nearly 85% of lateral exports, greatly exceedi...

agupubs.onlinelibrary.wiley.com

Salinity‐Driven Lakeshore ¹³C Enrichment of Soil Organic Matter Reveals a Neglected Degradation Process During Its Lateral Transport

Soil organic matter (OM) shows consistent lakeward 13C enrichment in lakeshores of the arid northwest China Salinity-assembled microbes are responsible for degrading lakeshore soil OM and enrichi...

agupubs.onlinelibrary.wiley.com

Controls of Soil Respiration in the Global Croplands

A total of 102 published field studies from the croplands of major global climate regions were analyzed Assuming a constant global cropland area, a hypothetical 10% increase in no-till management...

agupubs.onlinelibrary.wiley.com

Dust cloud from dino-killing asteroid charbroiled the Earth

“We're in the realm where we might be essentially killing off everything within that first hour or two."

arstechnica.com

C and N Isotopic Fractionation Along Permafrost Profiles: A Theoretical Framework and Empirical Tests Across the Arctic

Theoretical framework and hypothesis about the variation of C and N isotopic ratios of organic matter (OM) in permafrost cores are developed OM accumulated under C limitation, but contrasting acc...

agupubs.onlinelibrary.wiley.com

The Impact of Subglacial Drainage System Evolution and Glacier Lake Outburst on Arctic Fjord Macronutrient Dynamics

Glacier lake outburst flood increased the baseline nitrogen flux to the fjord by a factor 3, yet fjord nitrate concentrations remained low A localized nitrite spike suggests rapid subglacial biog...

agupubs.onlinelibrary.wiley.com

Under‐Ice Phytoplankton Bloom and Associated Particulate Organic Matter Composition Dynamics in Prydz Bay, Antarctica

A 38-day time series in Prydz Bay captured the development of an under-landfast ice bloom, driven by snow/ice melt and surface stratification In surface waters, particulate organic matter (POM) b...

agupubs.onlinelibrary.wiley.com

The Evidence for Linearly Scaling Ocean Gas Exchange With Sea Ice Needs Strengthening

The relationship between gas exchange and sea ice concentration is sensitive to sea ice data resolution and uncertainty Gas exchange can be shown to be suppressed at sea ice concentrations ≥50%, ...

agupubs.onlinelibrary.wiley.com

Impact of Fluid Flow on Bacterial Carbon and Sulfur Cycling, Mineral Precipitation, and Transformation in Hydrothermal Sediments off the Coast of Milos

Different styles of hydrothermal fluid flow cause distinct microbial metabolism and mineral formation in seafloor sediments Diffusive fluid flow supports sulfate-reducing bacteria linked to iron ...

agupubs.onlinelibrary.wiley.com

Heat and Wildfires During the K‐Pg Mass Extinction Enhanced by Fine Dust

Recent studies of expanded K-Pg boundary sites imply that the Chicxulub impact produced abundant fine dust Fine dust greatly enhances the infrared heat pulse produced by spherules reentering the ...

agupubs.onlinelibrary.wiley.com

Heat and Wildfires During the K‐Pg Mass Extinction Enhanced by Fine Dust

Recent studies of expanded K-Pg boundary sites imply that the Chicxulub impact produced abundant fine dust Fine dust greatly enhances the infrared heat pulse produced by spherules reentering the ...

agupubs.onlinelibrary.wiley.com

Deep Learning Reconstruction of Daily Soil CO₂ Efflux Reveals Biogeochemical Insights and Reduces Annual Estimate Uncertainty Despite Limitated Daily Predictability

A deep learning model reconstructed daily soil respiration data well in 26/82 sites (32%) despite low data coverage (0.2%–47% from 2003 to 2020) Estimation errors of annual efflux from daily pred...

agupubs.onlinelibrary.wiley.com

Big Trouble from Little Wetlands - Eos

New research suggests that small wetlands, previously unaccounted for in the global methane budget, are responsible for about 25% of global methane emissions.

eos.org

Patterns in Stream <i>p</i>CO₂ and CO₂ Emissions in a Subtropical Steep Headwater System, Southeastern China

The estimated carbon dioxide flux showed an average of 1,412 ± 1,104 mmol m−2 d−1 in the study subtropical steep headwater area Stream pCO2 was mainly controlled by soil CO2, oxidation-reduction ...

agupubs.onlinelibrary.wiley.com

Tibetan Pasture Restoration Causes Additional Cooling by Reflecting Solar Radiation

Long-term grassland restoration promotes litter accumulation and induces biophysical changes in surface energy exchange Accumulated litter increases surface albedo, thereby reducing net radiation...

agupubs.onlinelibrary.wiley.com

Microbially Mediated Transformation of Labile Iron in Estuarine Surface Sediments: Implications for Benthic Trace Element Cycling

Authigenic Fe(II) minerals formation precedes the release of dissolved Fe2+ during microbial Fe(III) reduction Inhibition of sulfate reduction facilitated Fe(II) accumulation in solid phase and s...

agupubs.onlinelibrary.wiley.com

Methane and Nitrous Oxide Reshape the Air‐Water Greenhouse Gas Budget of a Tropical Estuarine Delta

Methane and nitrous oxide strongly modify greenhouse gas balance in a tropical estuarine delta Methane and nitrous oxide offset carbon dioxide uptake and amplify emissions as the system shifts be...

agupubs.onlinelibrary.wiley.com

Riparian Processing of Upland Groundwaters Strongly Influences Downstream Transport and Channel Emission of Dissolved Inorganic Carbon Along Agricultural Stream Corridors

Hydrogeomorphic contexts in stream corridors dictate relative flow rates of surface springs and riparian groundwaters into stream channels Joint use of alkalinity, CO2 and DO signals partitions i...

agupubs.onlinelibrary.wiley.com