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The study characterised stand structure and floristic composition of woody life forms in three, 16-18 year old secondary stands that regenerated after pasture abandonment, and three nearby old-growth stands of tropical rainforest in lowland Costa Rica. Basal area and stem density for each of four...


Guariguata, M.R.Chazdon, R.L.Denslow, J.S.Dupuy, J.M.Anderson, L.[Structure and floristic of secondary and old growth stands in lowland Costa Rica]Structure and floristic of secondary and old growth stands in lowland Costa Rica

The reproductive output of Shorea siamensis, a widespread dipterocarp tree, was assessed in relation to disturbance and tree density at three sites in western Thailand during the 1996 and 1997 flowering seasons. The locations were similar except in disturbance history, which was reflected in decr...


Ghazoul, J.Liston, K.A.Boyle, T.J.B.[Disturbance-induced density-dependent reproductive success in a tropical forest tree]Disturbance-induced density-dependent reproductive success in a tropical forest tree

The mating system in 11 natural populations of Pterocarpus macrocarpus Kurz in Thailand was investigated based on the mixed mating model using 16 isozyme markers. Single-locus outcrossing rates (tm) ranged from 0.719 to 0.959. Both ts and tm revealed a geographic pattern with western populations ...


Liengsiri, C.Boyle, T.J.B.Yeh, F.C.[Mating system in Pterocarpus macrocarpus Kurz in Thailand]Mating system in Pterocarpus macrocarpus Kurz in Thailand

Two types of materials, six compositions of extractions buffer and three electrophoretic buffer system were studied to establish optimum procedures for obtaining good resolution of 14 enzyme systems in 12 species of Shorea which belongs to the family of Dipterocarpaceace. Thirteen (13) enzyme sys...


Sudarmonowati, E.Hartarti, N.S.Siregar, U.J.[Establishment of biochemical genetic markers techniques for Shorea spp.- tropical forest tree species]Establishment of biochemical genetic markers techniques for Shorea spp.- tropical forest tree species
Autor: Jong, W. de

Rubber is the most widespread smallholder tree crop in Southeast Asia. Some analysts have blamed the expansion of rubber for greatly contributing to the conversion of mature tropical forest in both Indonesia and Malaysia. The paper critically examines to what extent smallholder rubber production ...


Jong, W. de[The impact of rubber on the forest landscape in Borneo]The impact of rubber on the forest landscape in Borneo
Autor: Delmy, A.

The effects of the forest fire on anatomical and ecophysiological resistance of tree species was investigated in Bukit Soeharto Education Forest, an area about 5000 ha, in East Kalimantan, Indonesia. The forest was impacted seriously by forest fire in 1998. This forest land is dominated by Dipter...


Delmy, A.[Fire resistance of tree species in Bukit Soeharto Education Forest, East kalimantan, Indonesia]Fire resistance of tree species in Bukit Soeharto Education Forest, East kalimantan, Indonesia
Negehove, R.Nir, E.Kobayashi, S.[Preliminary results of the effects of different gap sizes on the growth and survival of six forest tree species in Papua New Guinea: short communication]Preliminary results of the effects of different gap sizes on the growth and survival of six forest tree species in Papua New Guinea: short communication

Swidden agriculture in tropical Asia is a diverse practice, making it difficult to draw general conclusions on trends of the development of swidden fallow secondary forests (SFSF). There is, however, sufficient evidence to recognise trends of a gradual intensification often through the incorporat...


Jong, W. deChokkalingam, U.Perera, G.A.D.[The evolution of swidden fallow secondary forests in Asia]The evolution of swidden fallow secondary forests in Asia

Droughts and fires are increasingly recognized as a significant component of tropical rain forest dynamics but detailed large-scale assessments of such events are scarce. This paper examines tree mortality in a lowland rainforest in East Kalimantan after an extreme drought (the most severe ever r...


Nieuwstadt, M.G.L. vanSheil, Douglas[Drought, fire and tree survival in a Borneo rain forest, East Kalimantan, Indonesia]Drought, fire and tree survival in a Borneo rain forest, East Kalimantan, Indonesia

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