| Autor: |
Alster, Charlotte J., van de Laar, Allycia, Goodrich, Jordan P., Arcus, Vickery L., Deslippe, Julie R., Marshall, Alexis J., Schipper, Louis A. |
| Předmět: |
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| Zdroj: |
Nature Communications; 9/6/2023, Vol. 14 Issue 1, p1-12, 12p |
| Abstrakt: |
Quantifying the rate of thermal adaptation of soil microbial respiration is essential in determining potential for carbon cycle feedbacks under a warming climate. Uncertainty surrounding this topic stems in part from persistent methodological issues and difficulties isolating the interacting effects of changes in microbial community responses from changes in soil carbon availability. Here, we constructed a series of temperature response curves of microbial respiration (given unlimited substrate) using soils sampled from around New Zealand, including from a natural geothermal gradient, as a proxy for global warming. We estimated the temperature optima ( T o p t ) and inflection point ( T inf ) of each curve and found that adaptation of microbial respiration occurred at a rate of 0.29 °C ± 0.04 1SE for T o p t and 0.27 °C ± 0.05 1SE for T inf per degree of warming. Our results bolster previous findings indicating thermal adaptation is demonstrably offset from warming, and may help quantifying the potential for both limitation and acceleration of soil C losses depending on specific soil temperatures. Soil microbial respiration responses to warming have important implications for biogeochemical feedbacks. Here, using data from temperature gradients, the authors show that the rate of thermal adaptation of soil microbial respiration is lower than the rate of warming despite large community changes. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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