- 1Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary
- 2HUN-REN-MATE Agroecology Research Group, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary
Arbuscular mycorrhizal fungi (AMF) as symbiotic microorganisms mediate carbon allocation between plants and soil by acting as a pathway of carbon to soil organic matter and between soil and atmosphere through mycorrhizal respiration. In 2022 an experiment focusing on the contribution of mycorrhizal fungi to soil respiration was set up in a Central-Hungarian dry sandy grassland. In this drought prone area drought events occur throughout the year and the limited water availability causes seasonal changes in plant growth, carbon uptake and thus in soil respiration as well.
During this study CO2 gas exchange was monitored by two different systems: eddy covariance (EC) and automated soil respiration measuring system (ASRS). In case of the ASRS four treatments were separated using the collar deployment method: i) undisturbed, root and AMF included, ii) disturbed, root and AMF included, iii) root excluded and iv) root and AMF excluded.
Here we present our results from two consecutive, yet - regarding water availability - dissimilar years (2023 and 2024).
How to cite: De Luca, G., Fóti, S., Mészáros, Á., Pintér, K., Nagy, Z., and Balogh, J.: How seasonal drought events alter carbon allocation and mycorrhizal respiration in a Central-Hungarian dry grassland, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-12647, https://doi.org/10.5194/egusphere-egu25-12647, 2025.
