Articles | Volume 21, issue 4
https://doi.org/10.5194/bg-21-1037-2024
© Author(s) 2024. 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-21-1037-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
01 Mar 2024
Research article |
| 01 Mar 2024
| 01 Mar 2024
Non-mycorrhizal root-associated fungi increase soil C stocks and stability via diverse mechanisms
Emiko K. Stuart
CORRESPONDING AUTHOR
Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW 2753, Australia
Laura Castañeda-Gómez
Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW 2753, Australia
present address: SouthPole – Environmental Services, Technoparkstrasse 1, 8005 Zurich, Switzerland
Wolfram Buss
Research School of Biology, Australian National University, ACT 2601, Canberra, Australia
Jeff R. Powell
Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW 2753, Australia
Yolima Carrillo
Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW 2753, Australia
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Johanna Pihlblad, Louise C. Andresen, Catriona A. Macdonald, David S. Ellsworth, and Yolima Carrillo
Biogeosciences, 20, 505–521, https://doi.org/10.5194/bg-20-505-2023, https://doi.org/10.5194/bg-20-505-2023, 2023
Short summary
Short summary
Elevated CO2 in the atmosphere increases forest biomass productivity when growth is not limited by soil nutrients. This study explores how mature trees stimulate soil availability of nitrogen and phosphorus with free-air carbon dioxide enrichment after 5 years of fumigation. We found that both nutrient availability and processes feeding available pools increased in the rhizosphere, and phosphorus increased at depth. This appears to not be by decomposition but by faster recycling of nutrients.
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Short summary
We inoculated wheat plants with various types of fungi whose impacts on soil carbon are poorly understood. After several months of growth, we examined both their impacts on soil carbon and the underlying mechanisms using multiple methods. Overall the fungi benefitted the storage of carbon in soil, mainly by improving the stability of pre-existing carbon, but several pathways were involved. This study demonstrates their importance for soil carbon storage and, therefore, climate change mitigation.
We inoculated wheat plants with various types of fungi whose impacts on soil carbon are poorly...
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