Arbuscular Mycorrhizal Fungi May Mitigate the Influence of a Joint Rise of Temperature and Atmospheric CO₂ on Soil Respiration in Grasslands

Figure 2

Mean potential heterotrophic respiration (𝑅_hpot) measured at 20^∘C for the inoculated and non-inoculated pasteurized soil under ambient conditions (black bars) and under combined warming and CO₂ enrichment (grey bars). For the future climate scenario, we also computed Rhpot at 23^∘C (white bars), using (1) with 𝑏=23^∘C and 𝑄₁₀=2, such that we could compare Rhpot at growth conditions (for more details, see Section 2). Error bars represent the standard deviation on the mean.

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