Author: Kristiina Karhu, Marc D. Auffret, Jennifer A. J. Dungait, David W. Hopkins, James I. Prosser, Brajesh K. Singh, Jens-Arne Subke, Philip A.Wookey, Go¨ran I. A˚gren, Maria-Teresa Sebastia`, Fabrice Gouriveau, Go¨ran Bergkvist, Patrick Meir, Andrew T. Nottingham, Norma Salinas & Iain P. Hartley
Year : 2014
Title: Temperature sensitivity of soil respiration rates enhanced by microbial community response
Journal : Nature
Comment : Soil microbial respiration increases exponentially with temperature. They collect soils from different ecosystems along a climate gradient from the Arctic to the Amazon and investigate how microbial community-level responses control the temperature sensitivity of soil respiration. The strongest enhancing responses were observed in soils with high carbon-tonitrogen ratios and in soils fromcold climatic regions. Furthermore, microbial community responses increased the temperature sensitivity of respiration in high-latitude soils by a factor of 1.4 compared to the instantaneous temperature response. Their results suggests that the substantial carbon stores in Arctic and boreal soils could be more vulnerable to climate warming than currently predicted.


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