Constraints on the temperature sensitivity of global soil respiration from the observed interannual variability in atmospheric CO2 |
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| Institution: | 1. Cátedra de Botánica Sistemática, Facultad de Agronomía, Universidad de Buenos Aires, CONICET, Av. San Martín 4453 (C1417DSE), Buenos Aires, Argentina;2. Cátedra de Ecología, Facultad de Agronomía, Universidad de Buenos Aires, CONICET, Av. San Martín 4453 (C1417DSE), Buenos Aires, Argentina;3. Cátedra de Forrajicultura, Facultad de Agronomía, Universidad de Buenos Aires, CONICET, Av. San Martín 4453 (C1417DSE), Buenos Aires, Argentina;4. IFEVA, Facultad de Agronomía, Universidad de Buenos Aires, CONICET, Av. San Martín 4453 (C1417DSE), Buenos Aires, Argentina;5. Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, 4to Piso (C1428EHA) Ciudad Universitaria, Buenos Aires, Argentina;1. USDA ARS Southwest Watershed Research Center, Tucson, AZ 85719, USA;2. University of Arizona, 1230 E. Speedway Blvd., P.O. Box 210104, Tucson, AZ 85721, USA;1. Department of Geoecology and Palaeogeography, Maria Curie–Sk?odowska University, Lublin, Kra?nicka 2cd, 20-718 Lublin, Poland;2. Institute of Geological Sciences, Polish Academy of Sciences, Warsaw, Twarda 51/55, 00-818 Warszawa, Poland;3. Institute of Geological Sciences, National Academy of Sciences of Ukraine, Gonchara 55B, 01601 Kyiv, Ukraine;4. National Museum of Natural History, National Academy of Sciences of Ukraine, 15 Bohdan Khmelnitsky, Kyiv 01601, Ukraine;5. Department of Geomorphology and Palaeogeography, Ivan Franko National University, Doroshenka 41, 79000 Lviv, Ukraine;6. Institute of Archaeology, Jagiellonian University, Go??bia 11, 31-007 Kraków, Poland;7. Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, S?awkowska 17, 31-016 Kraków, Poland;1. Université Clermont Auvergne, INRA, PIAF, 63000 Clermont-Ferrand, France;2. Irstea, Research Unit on Forest Ecosystems (EFNO), Domaine des Barres, 45290 Nogent-sur-Vernisson, France;1. Department of Mathematics and Physics, Catholic University of Brescia, via dei Musei 41, Brescia, Italy;2. Département de Gestion des Ressources Naturelles Renouvelables, Université de Lubumbashi, Democratic Republic of the Congo |
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| Abstract: | Carbon cycle feedbacks have been shown to be very important in predicting climate change over the next century. The response of the terrestrial carbon cycle to climate change depends on the competition between increased respiration due to warmer temperatures and increased uptake due to elevated CO2levels. Whether the terrestrial carbon cycle remains a sink for anthropogenic carbon, or switches to become a source, depends particularly on the response of soil respiration to temperature. Here we use observed global atmospheric CO2concentration to constrain the behaviour of soil respiration in a coupled climate–carbon cycle GCM. |
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