Impact of Substrate Availability on Microbial Respiration Response to Temperature: A Study on Thermal Adaptation

In summary, the authors initially hypothesized that Topt and \u0394C\u2020P would increase with warming, indicating a thermal adaptation of microbial communities. However, their results did not support this hypothesis. The most influential variable on the parameters derived from MMRT was C concentration, which was positively correlated with soil C:N ratios and N concentrations. This suggests that the positive influence of C concentration on respiration rate and the magnitude of change in respiration rates can be explained by substrate availability and microbial biomass. Overall, the findings suggest that substrate availability plays a crucial role in the response of microbial respiration to temperature.