ACKNOWLEDGEMENT
The authors acknowledge the help provided by the ‘NMR for Life’
infrastructure supported by the Wallenberg Foundations, the SITES
(Swedish Infrastructure for Ecosystem Science) and ICOS research
infrastructures (for maintaining the Kulbäcksliden/Degerö Stormyr
facility) funded by the Swedish research council (VR), the SciLifeLab
infrastructure, the SLU Stable Isotope Laboratory (for C- and N-isotope
and elemental analysis), Umeå Plant Science Center (for providing the
growth chambers), assistance from Jan Karlsson in operating the growth
chambers, assistance from Prof. Larry Flanagan in calculation ofc c, and financial support from the Knut and Alice
Wallenberg Foundation (#2015.0047), VR and the Carl Tryggers
Foundation.