Sanio’s laws revisited. Size-dependent changes in the xylem architecture of trees
Version of Record online: 10 SEP 2007
Volume 10, Issue 11, pages 1084–1093, November 2007
How to Cite
Mencuccini, M., Hölttä, T., Petit, G. and Magnani, F. (2007), Sanio’s laws revisited. Size-dependent changes in the xylem architecture of trees. Ecology Letters, 10: 1084–1093. doi: 10.1111/j.1461-0248.2007.01104.x
- Issue online: 10 SEP 2007
- Version of Record online: 10 SEP 2007
- Editor, Josep Penuelas Manuscript Submitted 8 June 2007 First decision made 11 July 2007 Manuscript accepted 31 July 2007
Appendix S1. Structure of the numerical model
Figure S1. Optimal tapering coefficient ā as a function of distance from the apex (or total number of ranks N) assuming constant tapering within a tree (i.e., ā is independent of rank number and positive) for four different values of conduit radius. Note that ā is used in this graph, not T.
Figure S2. An example of how the model calculated gross photosynthetic gains, total carbon construction costs and net gains (the difference between the first two) for trees of variable number of ranks (hence distance from the apex).
Figure S3. In this simulated coniferous tree, conduits tapered for a few metres below the tree apex at a constant rate (corresponding to ā=0.20).
Figure S4. An example of the impact of allowing variable maximum tapering rates just below the apex of angiosperm and gymnosperm trees.
Figure S5. Tapering profiles for two phylogenetic groups (angiosperms and gymnosperms) and two ontogenetic classes (large and small plants).
Table S1. List of parameter values employed in the numerical model.
Table S2. Datasets employed in the meta-analysis.
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