Temperature response of soil respiration largely unaltered with experimental warming
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Temperature response of soil respiration largely unaltered with experimental warming. / Carey, Joanna C; Tang, Jianwu; Templer, Pamela H; Kroeger, Kevin D; Crowther, Thomas W; Burton, Andrew J; Dukes, Jeffrey S; Emmett, Bridget; Frey, Serita D; Heskel, Mary A; Jiang, Lifen; Machmuller, Megan B; Mohan, Jacqueline; Panetta, Anne Marie; Reich, Peter B; Reinsch, Sabine; Wang, Xin; Allison, Steven D; Bamminger, Chris; Bridgham, Scott; Collins, Scott L; de Dato, Giovanbattista; Eddy, William C; Enquist, Brian J; Estiarte, Marc; Harte, John; Henderson, Amanda; Johnson, Bart R; Larsen, Klaus Steenberg; Luo, Yiqi; Marhan, Sven; Melillo, Jerry M; Peñuelas, Josep; Pfeifer-Meister, Laurel; Poll, Christian; Rastetter, Edward; Reinmann, Andrew B; Reynolds, Lorien L; Schmidt, Inger Kappel; Shaver, Gaius R; Strong, Aaron L; Suseela, Vidya; Tietema, Albert.
In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 113, No. 48, 2016, p. 13797–13802.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Temperature response of soil respiration largely unaltered with experimental warming
AU - Carey, Joanna C
AU - Tang, Jianwu
AU - Templer, Pamela H
AU - Kroeger, Kevin D
AU - Crowther, Thomas W
AU - Burton, Andrew J
AU - Dukes, Jeffrey S
AU - Emmett, Bridget
AU - Frey, Serita D
AU - Heskel, Mary A
AU - Jiang, Lifen
AU - Machmuller, Megan B
AU - Mohan, Jacqueline
AU - Panetta, Anne Marie
AU - Reich, Peter B
AU - Reinsch, Sabine
AU - Wang, Xin
AU - Allison, Steven D
AU - Bamminger, Chris
AU - Bridgham, Scott
AU - Collins, Scott L
AU - de Dato, Giovanbattista
AU - Eddy, William C
AU - Enquist, Brian J
AU - Estiarte, Marc
AU - Harte, John
AU - Henderson, Amanda
AU - Johnson, Bart R
AU - Larsen, Klaus Steenberg
AU - Luo, Yiqi
AU - Marhan, Sven
AU - Melillo, Jerry M
AU - Peñuelas, Josep
AU - Pfeifer-Meister, Laurel
AU - Poll, Christian
AU - Rastetter, Edward
AU - Reinmann, Andrew B
AU - Reynolds, Lorien L
AU - Schmidt, Inger Kappel
AU - Shaver, Gaius R
AU - Strong, Aaron L
AU - Suseela, Vidya
AU - Tietema, Albert
PY - 2016
Y1 - 2016
N2 - The respiratory release of carbon dioxide (CO2) from soil is a major yet poorly understood flux in the global carbon cycle. Climatic warming is hypothesized to increase rates of soil respiration, potentially fueling further increases in global temperatures. However, despite considerable scientific attention in recent decades, the overall response of soil respiration to anticipated climatic warming remains unclear. We synthesize the largest global dataset to date of soil respiration, moisture, and temperature measurements, totaling >3,800 observations representing 27 temperature manipulation studies, spanning nine biomes and over 2 decades of warming. Our analysis reveals no significant differences in the temperature sensitivity of soil respiration between control and warmed plots in all biomes, with the exception of deserts and boreal forests. Thus, our data provide limited evidence of acclimation of soil respiration to experimental warming in several major biome types, contrary to the results from multiple single-site studies. Moreover, across all nondesert biomes, respiration rates with and without experimental warming follow a Gaussian response, increasing with soil temperature up to a threshold of ∼25 °C, above which respiration rates decrease with further increases in temperature. This consistent decrease in temperature sensitivity at higher temperatures demonstrates that rising global temperatures may result in regionally variable responses in soil respiration, with colder climates being considerably more responsive to increased ambient temperatures compared with warmer regions. Our analysis adds a unique cross-biome perspective on the temperature response of soil respiration, information critical to improving our mechanistic understanding of how soil carbon dynamics change with climatic warming.
AB - The respiratory release of carbon dioxide (CO2) from soil is a major yet poorly understood flux in the global carbon cycle. Climatic warming is hypothesized to increase rates of soil respiration, potentially fueling further increases in global temperatures. However, despite considerable scientific attention in recent decades, the overall response of soil respiration to anticipated climatic warming remains unclear. We synthesize the largest global dataset to date of soil respiration, moisture, and temperature measurements, totaling >3,800 observations representing 27 temperature manipulation studies, spanning nine biomes and over 2 decades of warming. Our analysis reveals no significant differences in the temperature sensitivity of soil respiration between control and warmed plots in all biomes, with the exception of deserts and boreal forests. Thus, our data provide limited evidence of acclimation of soil respiration to experimental warming in several major biome types, contrary to the results from multiple single-site studies. Moreover, across all nondesert biomes, respiration rates with and without experimental warming follow a Gaussian response, increasing with soil temperature up to a threshold of ∼25 °C, above which respiration rates decrease with further increases in temperature. This consistent decrease in temperature sensitivity at higher temperatures demonstrates that rising global temperatures may result in regionally variable responses in soil respiration, with colder climates being considerably more responsive to increased ambient temperatures compared with warmer regions. Our analysis adds a unique cross-biome perspective on the temperature response of soil respiration, information critical to improving our mechanistic understanding of how soil carbon dynamics change with climatic warming.
U2 - 10.1073/pnas.1605365113
DO - 10.1073/pnas.1605365113
M3 - Journal article
C2 - 27849609
VL - 113
SP - 13797
EP - 13802
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
SN - 0027-8424
IS - 48
ER -
ID: 169102080