Articles | Volume 15, issue 13
https://doi.org/10.5194/bg-15-4003-2018
https://doi.org/10.5194/bg-15-4003-2018
Research article
 | 
03 Jul 2018
Research article |  | 03 Jul 2018

Inferring the effects of sink strength on plant carbon balance processes from experimental measurements

Kashif Mahmud, Belinda E. Medlyn, Remko A. Duursma, Courtney Campany, and Martin G. De Kauwe

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Cited articles

Arp, W. J.: Effects of source sink relations on photosynthetic acclimation to elevated carbon dioxide, Plant Cell Environ., 14, 869–876, 1991. 
Bloom, A. A., Exbrayat, J.-F., van der Velde, I. R., Feng, L., and Williams, M.: The decadal state of the terrestrial carbon cycle: Global retrievals of terrestrial carbon allocation, pools, and residence times, P. Natl. Acad. Sci. USA, 113, 1285–1290, https://doi.org/10.1073/pnas.1515160113, 2016. 
BoM: Climate Data Online (Station 067105), Bureau of Meteorology Melbourne, available at: http://www.bom.gov.au/climate/data/, last access: 26 August 2017. 
Bossel, H.: treedyn3 forest simulation model, Ecol. Model., 90, 187–227, https://doi.org/10.1016/0304-3800(95)00139-5, 1996. 
Bradford, K. J. and Hsiao, T. C.: Stomatal behavior and water relations of waterlogged tomato plants, Plant Physiol., 70, 1508–1513, 1982. 
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Short summary
A major limitation of current terrestrial vegetation models is that we do not know how to model C balance processes under sink-limited conditions. To address this limitation, we applied data assimilation of a simple C balance model to a manipulative experiment in which sink limitation was induced with low rooting volume. Our analysis framework allowed us to infer that, in addition to a feedback on photosynthetic rates, the reduction in growth was effected by other C balance processes.
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