Articles | Volume 23, issue 14
https://doi.org/10.5194/bg-23-5071-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-5071-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
23 Jul 2026
Research article |
| 23 Jul 2026
| 23 Jul 2026
The timing of warming matters as much as its intensity for the annual carbon balance of a degraded raised bog
Nicolas Behrens
CORRESPONDING AUTHOR
Institute of Landscape Ecology, Biosphere Atmosphere Interaction, University of Münster, Münster, Germany
Klaus-Holger Knorr
Institute of Landscape Ecology, Ecohydrology and Biogeochemistry, University of Münster, Münster, Germany
Christoph Rückriem
Biological Station Zwillbrock e.V., Vreden, Germany
Mana Gharun
Institute of Landscape Ecology, Biosphere Atmosphere Interaction, University of Münster, Münster, Germany
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At low water levels, parts of the bottom of rivers fall dry. These beaches or mudflats emit the greenhouse gas carbon dioxide (CO2) to the atmosphere. We found that those emissions are caused by microbial reactions in the sediment and that they change with time. Emissions were influenced by many factors like temperature, water level, rain, plants, and light.
Henning Teickner and Klaus-Holger Knorr
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Cordula Nina Gutekunst, Susanne Liebner, Anna-Kathrina Jenner, Klaus-Holger Knorr, Viktoria Unger, Franziska Koebsch, Erwin Don Racasa, Sizhong Yang, Michael Ernst Böttcher, Manon Janssen, Jens Kallmeyer, Denise Otto, Iris Schmiedinger, Lucas Winski, and Gerald Jurasinski
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Liam Heffernan, Maria A. Cavaco, Maya P. Bhatia, Cristian Estop-Aragonés, Klaus-Holger Knorr, and David Olefeldt
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Ramona J. Heim, Andrey Yurtaev, Anna Bucharova, Wieland Heim, Valeriya Kutskir, Klaus-Holger Knorr, Christian Lampei, Alexandr Pechkin, Dora Schilling, Farid Sulkarnaev, and Norbert Hölzel
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Fires will probably increase in Arctic regions due to climate change. Yet, the long-term effects of tundra fires on carbon (C) and nitrogen (N) stocks and cycling are still unclear. We investigated the long-term fire effects on C and N stocks and cycling in soil and aboveground living biomass.
We found that tundra fires did not affect total C and N stocks because a major part of the stocks was located belowground in soils which were largely unaltered by fire.
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Short summary
We analysed carbon fluxes and their response to climate in a drained bog. Annual budgets varied from net emissions to near-neutral. Warm spring temperatures increased CO2 uptake, a warm autumn increased emissions. Atmospheric drought early in the year reduced CO2 uptake more than later. Our results show that carbon fluxes from drained bogs are variable and the timing of climate anomalies controls their impact on carbon fluxes. This will be increasingly important with ongoing climate warming.
We analysed carbon fluxes and their response to climate in a drained bog. Annual budgets varied...
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