Stored carbon partly fuels fine-root respiration but is not used for production of new fine roots
Article first published online: 7 MAY 2013
No claim to original US government works. New Phytologist © 2013 New Phytologist Trust
Volume 199, Issue 2, pages 420–430, July 2013
How to Cite
Lynch, D. J., Matamala, R., Iversen, C. M., Norby, R. J. and Gonzalez-Meler, M. A. (2013), Stored carbon partly fuels fine-root respiration but is not used for production of new fine roots. New Phytologist, 199: 420–430. doi: 10.1111/nph.12290
- Issue published online: 19 JUN 2013
- Article first published online: 7 MAY 2013
- Manuscript Accepted: 17 MAR 2013
- Manuscript Received: 30 JAN 2013
- United States Department of Energy, Office of Science, Biological and Environmental Research program. Grant Number: ER65188
- National Science Foundation. Grant Number: DEB-0919276
- National Science Foundation IGERT. Grant Number: DGE-0549245
- US Department of Energy, Office of Science, Office of Biological and Environmental Research, Terrestrial Ecosystem Science Division. Grant Number: DE-AC02-06CH11357
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Fig. S1 Bulk root δ13C from fine roots 1–2 mm diameter from in-growth cores.
Fig. S2 A linearity approach to separating C pools with different turnover rates: log (% treatment C remaining) as a function of time after CO2 fumigation cessation.
Fig. S3 A comparison of one-pool and two-pool exponential decay functions for fine roots < 1 mm diameter.
Fig. S4 A comparison of one-pool and two-pool exponential decay functions for fine roots 1–2 mm diameter.
Table S1 ANOVA results for bulk δ13C of fine roots < 1 mm diameter from in-growth cores with sampling period as replicate
Table S2 ANOVA results for comparing bulk root δ13C and fine-root respired CO2 in ambient [CO2] with sampling time and C source as replicates
Table S3 ANOVA results for comparing δ13C of fine-root respired CO2 in the elevated [CO2] rings with sampling time as replicate