BG – Biogeosciences

Programme Group Chair: Ana Bastos

Inter- and transdisciplinary sessions led by BG

Session short summary:
Mangroves provide many ecosystem services, including coastal protection, carbon storage, and biodiversity support. Restoration efforts are expanding worldwide, but long-term success remains limited because key ecological processes are often overlooked. This session explores interdisciplinary case studies and practical approaches to better connect ecological science with effective restoration.
Keywords: (environmental) restoration, Carbon farming, Coastal environments, Coastal geomorphology
Inter- and Transdisciplinary Sessions suggestion led by: BG | Biogeosciences
Co-organization suggestions:
GM | Geomorphology
HS | Hydrological Sciences
OS | Ocean Sciences
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Disciplinary sessions of BG

BG1 –  General Biogeosciences

Sub-Programme Group Scientific Officer: Ana Bastos

Proposals are marked in red.

Session short summary:
Respiration’s "forgotten half" — O₂ flux — and the counter wise CO₂ flux hold the key to microbial metabolism, abiotic processes, and carbon cycling. The respiration quotient RQ includes information about metabolic states and processes from microbes to soils and entire ecosystems. We unite microbial ecologists, biogeochemists, and atmospheric scientists to overcome O₂ measurement challenges.
Keywords: Carbon flux, Plant-soil systems (plant-soil interactions), respiration
Co-organization suggestions:
AS | Atmospheric Sciences
HS | Hydrological Sciences
OS | Ocean Sciences
SSS | Soil System Sciences
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BG2 –  Methods in Biogeosciences

Sub-Programme Group Scientific Officers: Ana Bastos, Eliane Gomes Alves

Proposals are marked in red.

Session short summary:
Stable isotope signatures provide unique tools to identify, quantify, and predict biogeochemical element cycling across boundaries of all geo spheres, and on different scales. Mechanistic approaches require calibration wrt. analytical methods, standardization, experimental verification, and theoretical evaluation. Stay tuned for the latest achievements in the field of stable isotope biogeosciences
Keywords: Biogeochemical processes - aquatic, Biogeochemical processes - marine, Carbon isotope , Isotope measurements, Isotopes
Co-organization suggestions:
GMPV1 | New and interdisciplinary applications in geochemistry
HS2.1 | Catchment hydrology in diverse climates and environments
OS3 | Ocean Biogeochemistry and Biology
SSP3 | Sedimentology: processes, products, diagenesis
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Session short summary:
This session brings together research using stable isotopes and novel tracers to advance understanding of biogeochemical and atmospheric processes. We welcome experimental, analytical, instrumental, theoretical, and modelling studies, including isotopologues, clumped isotopes, isotope anomalies, isotopomer distributions, isotope effects, and flux measurements.
Keywords: Atmosphere-biosphere interactions, Biogeochemical interactions, Biogeochemical processes - atmosphere, Isotope measurements, Isotopes
Co-organization suggestions:
AS | Atmospheric Sciences
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BG3 –  Terrestrial Biogeosciences

Sub-Programme Group Scientific Officers: Ana Bastos, Rebecca Varney

Proposals are marked in red.

Session short summary:
A transformation towards sustainable agriculture is crucial to secure food for future generations while restoring resources and addressing challenges including climate change, water scarcity, and socio-economic disparities. This session focuses on modeling agricultural systems under global change.
Keywords: Agriculture, Climate change - adaptation, Numerical modelling - mechanical, Plant-soil systems (plant-soil interactions), Soil management in agriculture
Co-organization suggestions:
ERE | Energy, Resources and the Environment
SSS | Soil System Sciences
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Session short summary:
Our session links the complexity of greenhouse gas flux dynamics, and production, consumption and transport processes and mechanisms within the forest ecosystems at different scales – from microbes, forest soils, plants/trees and cryptogams, to forest and ecosystem levels at regional and global scale.
Keywords: Forests, Greenhouse gases (GHG), Methane, Trees
Co-organization suggestions:
SSS | Soil System Sciences
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Session short summary:
This session addresses the role of plant traits, biodiversity, acclimation, and adaptation in regulating the biogeochemical cycles of water, carbon, nitrogen, phosphorus, and sulfur across scales. We welcome conceptual, observational, experimental, and modeling studies from local to global levels, including in situ and remote sensing approaches.
Keywords: Biodiversity, Vegetation modelling, vegetation processes
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Session short summary:
This session explores terrestrial ecosystem responses to global change by linking above- and belowground processes and bridging experiments, observations, and models. We welcome studies across carbon, water, and nutrient cycling, from plant traits and physiology to ecosystem processes, using experiments, remote sensing, machine learning, and process-based modelling.
Keywords: Biogeochemical interactions, Biogeochemical modelling, Biogeochemical processes - terrestrial, Monitoring and diagnostics
Co-organization suggestions:
CL0 | Inter- and Transdisciplinary Sessions
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Session short summary:
This session explores how stable isotopes, trace-element geochemistry, and plant phenotyping can improve our understanding of soil–plant–atmosphere interactions and plant responses to environmental change, supporting ecosystem and crop resilience and sustainable land management.
Keywords: Biogeochemical interactions, Isotopes, Photosynthetic productivity, Plant-soil systems (plant-soil interactions)
Co-organization suggestions:
SSS9 | Soil, Forestry and Agriculture
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Session short summary:
This session brings together experimental and modelling approaches to understand and predict soil C cycling under environmental change. We explore how long-term experiments, process-based and hybrid models, and machine learning can be integrated to capture climatic and biological interactions, improve model evaluation and transferability, and identify key knowledge gaps.
Keywords: Biogeochemical modelling, Carbon cycle - Biosphere, Data access, Soil organic carbon, Soil organic matter
Co-organization suggestions:
SSS | Soil System Sciences
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Session short summary:
In this session, we aim at reviewing recent progress made with novel approaches of constraining ecosystem gross primary productivity, respiration and transpiration.
Keywords: Atmosphere-biosphere interactions, Carbon cycle - Biosphere, Land-atmosphere interactions
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BG4 –  Marine and Freshwater Biogeosciences

Sub-Programme Group Scientific Officers: Jens Terhaar, Magdalena Bieroza

Proposals are marked in red.

Session short summary:
This session builds bridges the gap between hydrological and biogeochemical sciences to advance understanding of processes controlling the fate of organic matter, nutrients, sediments, and other chemical substances across freshwater ecosystems, from streams, rivers, lakes, wetlands, to estuaries.
Keywords: Biogeochemical processes - aquatic, Freshwater environments, Nutrient cycling, Organic carbon, Water quality
Co-organization suggestions:
HS2.3 | Water quality at the catchment scale
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BG5 –  Palaeobiogeosciences

Sub-Programme Group Scientific Officer: Franziska Lechleitner

BG6 –  Geomicrobiomes and their function

Sub-Programme Group Scientific Officer: Christoph Keuschnig

BG7 –  Extraterrestrial and Extreme Environment Biogeosciences

Sub-Programme Group Scientific Officer: Ana Bastos

BG8 –  Biogeosciences, Policy and Society

Sub-Programme Group Scientific Officers: Nora L. S. Fahrenbach, Sindu Raj Parampil

BG9 –  Earth System Remote Sensing and Modelling

Sub-Programme Group Scientific Officer: Ana Bastos

Proposals are marked in red.

Session short summary:
Remote sensing provides unique insights into biosphere–atmosphere interactions by observing vegetation, soil and water across the electromagnetic spectrum. This session welcomes innovative methods, data integration, modelling and applications addressing carbon, water and nutrient cycles, climate, food security, biodiversity, air pollution, epidemiology and public health, including pollen impacts.
Keywords: Carbon flux, Nutrient cycling, Water cycle
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BG10 –  Interdisciplinary topics in Biogeosciences

Sub-Programme Group Scientific Officer: Ana Bastos