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Appendix A: A scheme of the labeling facility.
Ecological Archives E093-016-A1.

Appendix B: Sources of error in the estimation of relative photosynthesis rate (RPR).
Ecological Archives E093-016-A2.

Appendix C: Environmental parameters in labeling chambers.
Ecological Archives E093-016-A3.

Appendix D: The evolution of the δ13C of shoots vs. time and vs. cumulative photosynthetic active radiation (PAR) during several labeling experiments.
Ecological Archives E093-016-A4.

Appendix E: A model to assess the role of tracer residence in shoot metabolic pools, tracer partitioning belowground, and tracer use in shoot respiration in determining the fraction of assimilated tracer lost from the shoot (flost) during steady state labeling.
Ecological Archives E093-016-A5.

Appendix F: Tracer respired belowground (soil + roots) over the initial six hours after a labeling pulse, as a proportion of total tracer respired during the complete chase period.
Ecological Archives E093-016-A6.