Foliar Defences and Habitat Adversity of Three Woody Plant Communities in Singapore
1995; Wiley; Volume: 9; Issue: 2 Linguagem: Inglês
10.2307/2390574
ISSN1365-2435
Autores Tópico(s)Botany, Ecology, and Taxonomy Studies
Resumo1. The concentrations of total phenolics and condensed tannins were measured in mature and immature leaves of 41 species of tree and shrub found growing wild in Singapore. The species came from trema belukar, the typical secondary forest produced by disturbance of primary lowland rain forest, adinandra belukar, an early successional community on extremely infertile soils, or mangrove. The trema belukar habitat has higher levels of available resources than the other two. 2. Trema belukar species had the highest mean level of total phenolics, significantly higher than the other two communities. The three communities did not differ significantly in foliar concentrations of condensed tannins. These results contradict the predictions of the resource-availability hypothesis of plant defence and are discussed in this light. 3. Immature leaves were generally about 70% higher than mature leaves in their total phenolic concentration and 78% higher in condensed tannin concentration across the three communities
Referência(s)