Citation
Rozainah M . Zakaria, . and Dransfield J ., . and Kieth-Lucas M ., . The demography of two wild Arenga species (Arecaceae) in Malaysia. pp. 95-107. ISSN 0025-1291
Abstract
A demographic study of growth rates and age structure of two wild palms Arenga westerhoutii Griff. and Arenga obtusifolia Mart. was carried out for 17 months in four study plots at Bukit Langong Forest Reserve Selangor Malaysia. Three life stages have been defined for both species: seedling juvenile and stemmed. In this study the growth rate was determined by the rate of leaf production per year. In each stage it was discovered that the growth rate was not significantly different between the two species. In the seedling stage A. westerhoutii produced 0.7 leaves per year while A. obtusifolia produced 0.5 leaves per year. In the juvenile stage A. westerhoutii and A. obtusifolia produced one leaf and 0.8 leaves per year respectively. In the stemmed stage both species produced 1.2 leaves per year. By multiplying the plastochrone and the total number of leaves the age of each individual can be estimated. It was calculated that the average age of a stemmed A. westerhoutii was 64.7 years while in A. obtusifolia the average was 58 years.
Download File
Full text available from:
|
Abstract
A demographic study of growth rates and age structure of two wild palms Arenga westerhoutii Griff. and Arenga obtusifolia Mart. was carried out for 17 months in four study plots at Bukit Langong Forest Reserve Selangor Malaysia. Three life stages have been defined for both species: seedling juvenile and stemmed. In this study the growth rate was determined by the rate of leaf production per year. In each stage it was discovered that the growth rate was not significantly different between the two species. In the seedling stage A. westerhoutii produced 0.7 leaves per year while A. obtusifolia produced 0.5 leaves per year. In the juvenile stage A. westerhoutii and A. obtusifolia produced one leaf and 0.8 leaves per year respectively. In the stemmed stage both species produced 1.2 leaves per year. By multiplying the plastochrone and the total number of leaves the age of each individual can be estimated. It was calculated that the average age of a stemmed A. westerhoutii was 64.7 years while in A. obtusifolia the average was 58 years.
Additional Metadata
| Item Type: | Article |
|---|---|
| Additional Information: | Summary (En) |
| AGROVOC Term: | ARENGA |
| AGROVOC Term: | PALMAE |
| AGROVOC Term: | SPECIES |
| AGROVOC Term: | DEMOGRAPHY |
| AGROVOC Term: | GROWTH RATE |
| AGROVOC Term: | AGE STRUCTURE |
| AGROVOC Term: | SEEDLINGS |
| AGROVOC Term: | JUVENILES |
| AGROVOC Term: | STEMS |
| AGROVOC Term: | MALAYSIA ARENGA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:52 |
| URI: | http://webagris.upm.edu.my/id/eprint/17898 |
Actions (login required)
 |
View Item |
