Supplementary information

From the following article:

Net carbon dioxide losses of northern ecosystems in response to autumn warming

Shilong Piao, Philippe Ciais, Pierre Friedlingstein, Philippe Peylin, Markus Reichstein, Sebastiaan Luyssaert, Hank Margolis, Jingyun Fang, Alan Barr, Anping Chen, Achim Grelle, David Y. Hollinger, Tuomas Laurila, Anders Lindroth, Andrew D. Richardson & Timo Vesala

Nature 451, 49-52(3 January 2008)

doi:10.1038/nature06444