A qualitative evaluation of a ‘sangre de grado’ tree population along the Aguaytia watershed determined its abundance and latex production potential. Also, the flora species composition of the 9 year-old secondary forests was outlined. By collecting botanic samples, the species Croton draconoides...
Atanacio Venturo, N.
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Domínguez Torrejon, G.
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[Evaluacion preliminar de la produccion de latex de Croton draconoides M. Arg. en bosques secundarios de la provincia de Padre Abad-Ucayali]
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Evaluacion preliminar de la produccion de latex de Croton draconoides M. Arg. en bosques secundarios de la provincia de Padre Abad-Ucayali
Although forest tree pattern-dynamics has long been a focus for ecological theory, many aspects of basic analysis remain problematic.This paper describes, examines and illustrates an 'extreme-value' approach to clump detection. Simulations demonstrate that the approach, though simple, is sensitiv...
Sheil, Douglas
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Ducey, M.J.
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[An extreme-value approach to detect clumping and an application to tropical forest gap-mosaic dynamics]
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An extreme-value approach to detect clumping and an application to tropical forest gap-mosaic dynamics
Biomass of a mature man-made forest in West Java, Indonesia, was estimated to evaluate the carbon sequestration potential of plantation forest in the humid tropics. Twenty plots, each 0.25 ha in area and containing one to six planted species over 40 years of age and with closed canopies, were sel...
Hiratsuka, M.
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Toma, T.
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Mindawati, N.
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Heriansyah, I.
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Morikawa, Y.
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[Biomass of a man-made forest of timber tree species in the humid tropics of West Java, Indonesia]
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Biomass of a man-made forest of timber tree species in the humid tropics of West Java, Indonesia
Input/output data from tree growing experiments in Southeast Asia were analysed within the framework of a model of a smallholder farm. Data on cropping were obtained from surveys of farmers. Prior to formulating a whole farm model, this input/output data were modified in two ways: (a) a yield pen...
Menz, K.M.
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Grist, P.
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[Economic opportunities for smallholders to combine pulpwood trees and food crops]
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Economic opportunities for smallholders to combine pulpwood trees and food crops
Selective logging applied in tropical forests is based on one universal criterion: a minimum diameter cutting limit for all commercial timber species. Minimum diameter cutting limits in mixed dipterocarp forests of the Malesia region lead to high felling intensities (10–20+ trees per hectare). Su...
The aim of this paper is to (1) identify floristic regions in the lowland (below 500 m a.s.l.) tropical dipterocarp rain forest of Borneo based on tree genera, (2) determine the characteristic taxa of these regions, (3) study tree diversity patterns within Borneo, and (4) relate the floristic and...
Slik, J.W.F.
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Poulsen, A.D.
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Ashton, P.S.
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Cannon, C.H.
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Eichhorn, K.A.O.
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Kartawinata, K.
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Lanniari, I.
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Nagamasu, H.
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Nakagawa, M.
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Nieuwstadt, M.G.L. van
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Payne, J.
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Purwaningsih
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Saridan, A.
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Sidiyasa, K.D.
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Verburg, R.W.
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Webb, C.O.
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[A floristic analysis of the lowland dipterocarp forests of Borneo]
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A floristic analysis of the lowland dipterocarp forests of Borneo
Genetic variation within and among 11 natural populations of Pterocarpus macrocarpus Kurz. from different forest habitats in Thailand was examined by starch gel electrophoresis of 18 loci coding for 11 enzymes. The species possesses a high level of isozyme variation. The percentage of polymorphic...
Liengsiri, C.
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Yeh, F.C.H.
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Boyle, T.J.B.
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[Isozyme analysis of a tropical forest tree, Pterocarpus macrocarpus Kurz]
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Isozyme analysis of a tropical forest tree, Pterocarpus macrocarpus Kurz
Twenty nine secondary forest stands with ages over four years were studied near Pucalipa in the Peruvian Amazon. Altogether 102 plant species 10 + cm dbh were recorded in the forest inventories. The most frequent species use group was timber, both in terms of number of species as well as abundanc...
Galvan Gildemeister, O.
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Sabogal, C.
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Colan, V.
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[Potencial productivo de los bosques secundarios de aitura de la zona de Pucalipa, Region Ucayali, Amazonia peruana]
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Potencial productivo de los bosques secundarios de aitura de la zona de Pucalipa, Region Ucayali, Amazonia peruana
Studies predicting diameter at breast height (dbh) from stump height measurements are numerous but none had been conducted in Malinau distric, East Kalimantan. The objective of this study is to develop a relationship between stump height and dbh in order to predict dbh from diameter at estimated ...
Iskandar, H.
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Hubble, D.L.
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MacDicken, K.G.
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[Estimating DBH of commercial trees from stump measurement in Malinau, East Kalimantan]
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Estimating DBH of commercial trees from stump measurement in Malinau, East Kalimantan
This article is a result of a research project to characterize degrated sites in Pucallpa, Peru and determine the adaptability of six native tree species in areas abandoned after agricultural use. Nine farmers were selected for setting-up experimental plots on abandoned land characterized by Ulti...
Soudre, M.
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Ricse, A.
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Sabogal, C.
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Kobayashi, S.
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Guariguata, M.R.
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Alegre, J.
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[Caracterizacion de sitios degradados y adaptabilidad de especies forestales en el ambito de Pucallpa, Ucayali]
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Caracterizacion de sitios degradados y adaptabilidad de especies forestales en el ambito de Pucallpa, Ucayali