EGU Biogeosciences Division (BG)

N transformations in nitrate-rich groundwaters: combined isotope and microbial approach Abstract. This study explores nitrogen transformations in groundwater from an agricultural area utilizing organic fertilizer (wastewater from yeast production) by integrating isotope analysis,…

🗞️ New article in Biogeosciences #EGU by Sushmita Deb et al ⬇️

A tracer study for the development of in-water monitoring, reporting, and verification (MRV) of ship-based ocean alkalinity enhancement Abstract. Ocean alkalinity enhancement (OAE) is a marine carbon dioxide removal (mCDR) approach that relies on the addition of liquid or solid alkalinity into seawater to take up and neutralize…

🗞️ New article in Biogeosciences #EGU by Adam V. Subhas et al ⬇️

Long-term nitrogen fertilization alters microbial respiration sensitivity to temperature and moisture, potentially enhancing soil carbon retention in a boreal Scots pine forest Abstract. Nutrient availability affects microbial respiration kinetics; their sensitivities to environmental conditions; and, thus, the soil organic carbon (SOC) stocks. We examined long-term…

🗞️ New article in Biogeosciences #EGU by Boris Ťupek et al ⬇️

Microbial sulfur cycling across a 13 500-year-old lake sediment record Abstract. The sulfur cycle is very important in lake sediments, despite the much lower sulfate concentrations in freshwater than seawater. To date, little is known about the formation and…

🗞️ New article in Biogeosciences #EGU by Jasmine S. Berg et al ⬇️

Refining marine net primary production estimates: advanced uncertainty quantification through probability prediction models Abstract. In marine ecosystems, net primary production (NPP) is important, not merely as a critical indicator of ecosystem health, but also as an essential component in the global carbon cycling…

🗞️ New article in Biogeosciences #EGU byJie Niu et al ⬇️

Mapping the safe operating space of marine ecosystems under contrasting emission pathways Abstract. Anthropogenic greenhouse gas emissions cause multiple changes in the ocean and its ecosystems through climate change and ocean acidification. These changes can occur progressively with…

🗞️ New article in Biogeosciences #EGU by Timothée Bourgeois et al ⬇️

Temporal patterns of greenhouse gas emissions from two small thermokarst lakes in Nunavik, Canada Abstract. Small thermokarst lakes, formed by the thawing of ice-rich permafrost, are significant sources of greenhouse gases (GHGs). Most estimates of emissions rely solely on daily measurements,…

🗞️ New article in Biogeosciences #EGU by Amélie Pouliot et al ⬇️

Aquatic metabolism influences temporal variations of water carbon and atmospheric carbon dioxide fluxes in a temperate salt marsh Abstract. Salt marshes are blue carbon (C) ecosystems characterized by intense atmospheric CO2 uptake and C sequestration but also by organic and inorganic C exports through the tide. However,…

🗞️ New article in Biogeosciences #EGU by Jérémy Mayen et al ⬇️

Optimization of the World Ocean Model of Biogeochemistry and Trophic dynamics (WOMBAT) using surrogate machine learning methods Abstract. The introduction of new processes in biogeochemical models brings new model parameters that must be set. Optimization of the model parameters is crucial to ensure that model performance is…

🗞️ New article in Biogeosciences #EGU by Pearse J. Buchanan et al ⬇️

Future forests: estimating biogenic emissions from net-zero aligned afforestation pathways in the UK Abstract. Woodlands sequester carbon dioxide from the atmosphere, which could help mitigate climate change. As part of efforts to reach net-zero greenhouse gas emissions by the year 2050, the UK's…

🗞️ New article in Biogeosciences #EGU by Hazel Mooney et al. ⬇️

Chemical and stable carbon isotopic compositions of PM2.5 from two typical forests in China: implication for sources Abstract. To elucidate the origin and seasonality of atmospheric aerosols in forest areas, simultaneous PM2.5 collection was carried out in two typical forest sites: Changbai Mountain (CB, 42.40° N,…

🗞️ New article in Biogeosciences #EGU by Mingyu Li et al. ⬇️

Ecosystem dynamics of an ice-poor permafrost peatland in eastern Eurasia: paleoecological insights into climate sensitivity Abstract. Northern peatlands are carbon-rich ecosystems highly sensitive to climate change, with nearly half of their carbon stocks associated with permafrost. Peat-based paleoecological records…

🗞️ New article in Biogeosciences #EGU by Zhengyu Xia et al. ⬇️

Photosynthetic electron, carbon, and oxygen fluxes within a mosaic of Fe limitation in the California Current upwelling system Abstract. We compare primary productivity estimates based on different photosynthetic “currencies” (electrons, O2, and carbon) measured in the dynamic coastal upwelling waters of the California…

🗞️ New article in Biogeosciences #EGU by Yayla Sezginer et al. ⬇️

Environmental drivers constraining the seasonal variability in satellite-observed and modelled methane at northern high latitudes Abstract. Methane emissions from Northern Hemisphere high-latitude wetlands are associated with large uncertainties, especially in the rapidly warming climate. Satellite observations of…

🗞️ New article in Biogeosciences #EGU by Ella Kivimäki et al. ⬇️

Drivers of and uncertainty in Amazon carbon sink long-term and interannual variability in CMIP6 models Abstract. The Amazon basin rainforest is a critical component of the climate system, currently representing 25 % of terrestrial carbon gains and storing 150×109 to 200×109 t of carbon. Whether the...

🗞️ New article in Biogeosciences #EGU by Matteo Mastropierro et al. ⬇️
bg.copernicus.org/articles/22/...

Adaptation of methane-oxidizing bacteria to environmental changes: implications for coastal methane dynamics Abstract. Global warming induces alterations in ocean temperature regimes, as well as in precipitation patterns. This leads to shifts in water column properties, which will increasingly impact…

🗞️ New article in Biogeosciences #EGU by Tim R. de Groot et al. ⬇️

Estimation of metabolic dynamics of restored seagrass meadows in a Southeast Asia islet: insights from ex situ benthic incubation Abstract. Seagrass meadows are vital carbon sinks, but their function is threatened by rapid decline, driving restoration efforts to enhance coastal recovery and carbon removal. The role of restored…

🗞️ New article in Biogeosciences #EGU by Mariche Bandibas-Natividad et al. ⬇️

Terrestrial and marine plastic pollution outlook in the Mediterranean region: a box-model approach based on OECD policy scenarios Abstract. Plastic pollution in the Mediterranean Sea and catchment raises serious concerns for ecosystem and human health. Plastic dispersal from Mediterranean watersheds in southern Europe, northern…

🗞️ New article in Biogeosciences #EGU by Théo Segur and Jeroen E. Sonke ⬇️

Hydrodynamic and primary production effects on seasonal DO variability in the Danube River Abstract. Dissolved oxygen (DO) is a fundamental indicator for water quality and ecosystem health, particularly in the context of anthropogenic impacts and climate change. This study presents the…

🗞️ New article in Biogeosciences #EGU by Jan Maier et al. ⬇️

From small-scale variability to mesoscale stability in surface ocean pH: implications for air–sea CO2 equilibration Abstract. One important aspect of understanding ocean acidification is the nature and drivers of pH variability in surface waters on smaller spatial (i.e. areas up to 100 km2) and temporal (i.e.…

🗞️ New article in Biogeosciences #EGU by Louise Delaigue et al. ⬇️

Effect of preceding integrated and organic farming on 15N recovery and the N balance, including emissions of NH3, N2O, and N2 and leaching of NO3− Abstract. Ecological intensification strategies in agriculture, including organic fertilization and diversified crop rotations, aim to reduce nitrogen (N) losses to the environment. However, studies…

🗞️ New article in Biogeosciences #EGU by Fawad Khan et al. ⬇️

Physiological responses to ultra-high CO2 levels in an evergreen tree species Abstract. Although numerous experiments have been dedicated to studying plant response to elevated CO2, almost none crossed the level of 1000 ppm. Plant responses to high CO2 levels importantly…

🗞️ New article in Biogeosciences #EGU by Ben-El Levy et al. ⬇️

Technical note: Pondi – a low-cost logger for long-term monitoring of methane, carbon dioxide, and nitrous oxide in aquatic and terrestrial systems Abstract. Understanding the complex dynamics of greenhouse gases (GHGs) such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) fluxes between aquatic and terrestrial ecosystems and the…

🗞️ New article in Biogeosciences #EGU by Martino E. Malerba et al. ⬇️

Snow thermal conductivity controls future winter carbon emissions in shrub–tundra Abstract. The Arctic winter is disproportionately vulnerable to climate warming and approximately 1700 Gt of carbon stored in high-latitude permafrost ecosystems is at risk of degradation in the…

🗞️ New article in Biogeosciences #EGU by Johnny Rutherford et al. ⬇️

Northern North Atlantic climate variability controls on ocean carbon sinks in EC-Earth3-CC Abstract. The northern North Atlantic (NA) is an important net sink of atmospheric CO2, though atmosphere–ocean CO2 fluxes exhibit substantial variability across different timescales. The underlying…

🗞️ New article in Biogeosciences #EGU by Anna Pendersen et al. ⬇️

Tree growth and water-use efficiency at the Himalayan fir treeline and lower altitudes: roles of climate warming and CO2 fertilization Abstract. Alpine forests are increasingly exposed to rising temperatures and intensified drought, potentially pushing species beyond their tolerance limits. However, the extent to which rising…

🗞️ New article in Biogeosciences #EGU by Xing Pu et al. ⬇️

Grassland yield estimations – potentials and limitations of remote sensing in comparison to process-based modeling and field measurements Abstract. Grasslands make up the majority of agricultural land and provide fodder for livestock. Information on grassland yield is very limited, as fodder is directly used at farms. However, data on…

🗞️ New article in Biogeosciences #EGU by Sophie Reinermann et al. ⬇️

Northern North Atlantic climate variability controls on ocean carbon sinks in EC-Earth3-CC Abstract. The northern North Atlantic (NA) is an important net sink of atmospheric CO2, though atmosphere–ocean CO2 fluxes exhibit substantial variability across different timescales. The underlying…

🗞️ New article in Biogeosciences #EGU by Anna Pedersen et al. ⬇️
bg.copernicus.org/articles/22/...

Tree growth and water-use efficiency at the Himalayan fir treeline and lower altitudes: roles of climate warming and CO2 fertilization Abstract. Alpine forests are increasingly exposed to rising temperatures and intensified drought, potentially pushing species beyond their tolerance limits. However, the extent to which rising…

🗞️ New article in Biogeosciences #EGU by Xing Pu and Lixin Lyu ⬇️

Impacts of eutrophication and deoxygenation on the sediment biogeochemistry in the Sea of Marmara Abstract. The biogeochemistry of seafloor sediments can be significantly altered in response to deoxygenation and eutrophication-driven organic carbon production, resulting in increased benthic…

🗞️ New article in Biogeosciences #EGU by İsmail Akçay et al. ⬇️