You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. 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.
Spatial Variation in the Structure and Litterfall of a Sumatran Rain Forest
C. P. van Schaik and E. Mirmanto
Vol. 17, No. 3 (Sep., 1985), pp. 196-205
Published by: Association for Tropical Biology and Conservation
Stable URL: http://www.jstor.org/stable/2388217
Page Count: 10
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.
Preview not available
In this paper an explanation for the spatial variation in the structure of a Sumatran rain forest is suggested. The forest area consisted of a series of topographical units (terraces, mountain slopes) of increasing age and decreasing pH and fertility. With increasing soil age the production of leaf litter and fruit decreased whereas the proportion of mature-phase forest increased and gap cover decreased. There is variation in the growth strategies of trees depending on soil fertility; this results in higher tree longevity on poor soils, and hence in forest with fewer gaps and with more large trees, than on rich soils. Thus, Janzen's (1974) hypothesis of the effect of soil fertility on the prevalence of anti-herbivore defenses and fruiting periodicity is extended to include aspects of forest structure.
Biotropica © 1985 Association for Tropical Biology and Conservation