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Stilt Roots and Growth of Arboreal Palms

George E. Schatz, G. Bruce Williamson, Charlotte M. Cogswell and Alan C. Stam
Biotropica
Vol. 17, No. 3 (Sep., 1985), pp. 206-209
DOI: 10.2307/2388220
Stable URL: http://www.jstor.org/stable/2388220
Page Count: 4
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Stilt Roots and Growth of Arboreal Palms
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Abstract

Patterns in the growth of palms support the hypothesis that stilt roots enable arboreal palms to produce an axis early in their development. The height of stilt roots is positively related to axis diameter for Socratea durissima and Iriartea gigantea. Both species achieve greater heights per unit diameter earlier in development than the non-stilt root species Welfia georgii; however, at maturity all three palms exhibit similar relationships of height and diameter. Stilt root production and axis elongation are more rapid for S. durissima than for I. gigantea. Among immature palms, W. georgii has a greater percent of biomass underground than the stilt root species. Comparing the stilt root species, S. durissima produces a lower percent of leaves but a higher percent of stilt roots than I. gigantea.

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