A protocol for measuring abundance and size of a neotropical liana, Desmoncus polyacanthos (Palmae), in relation to forest structure

This study investigated the relationship between the abundance and size of D. polyacanthos and measures of forest canopy structure. Várzea and terra firme forest were selected for study at the mouth of the Amazon estuary, Pará, Brazil. The forest canopy characteristics investigated included individu...

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Bibliographic Details
Published in:Economic botany 1997-10, Vol.51 (4), p.339-346
Main Authors: Troy, A.R, Ashton, P.M.S, Larson, B.C
Format: Article
Language:English
Subjects:
Abundance
ALTURA
Animal behavior
ARECACEAE
BIODIVERSIDAD
BIODIVERSITE
BIODIVERSITY
Biological and medical sciences
Canopies
CANOPY
CARACTERISTICAS DEL RODAL
CARACTERISTIQUE DU PEUPLEMENT
COPA
CORTE
COUVERT
Coverage
CROWN
CUBIERTA DE COPAS
CUTTING
DECOUPAGE
DIMENSION
DIMENSIONS
ECOLOGIA FORESTAL
ECOLOGIE FORESTIERE
Estuaries
FEUILLE
FOLIAGE
Forest canopy
FOREST ECOLOGY
Forest restoration
Forest stands
Forestry
Forests
Fundamental and applied biological sciences. Psychology
General forest ecology
Generalities. Production, biomass. Quality of wood and forest products. General forest ecology
HAUTEUR
HEIGHT
Herbivores
HOJAS
HOUPPIER
LEAVES
Lianas
NATURAL REGENERATION
PALMAE
PARA
REGENERACION NATURAL
REGENERATION NATURELLE
SILVICULTURA
SILVICULTURE
SOTOBOSQUE
SOUS BOIS
SPECIES DIVERSITY
STAND CHARACTERISTICS
STAND STRUCTURE
Statistical variance
STEMS
Sustainable forest management
SYLVICULTURE
TALLO
TIGE
Tree crowns
Trees
Tropical rain forests
UNDERGROWTH
UNDERSTORY
Woody vines
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Summary:This study investigated the relationship between the abundance and size of D. polyacanthos and measures of forest canopy structure. Várzea and terra firme forest were selected for study at the mouth of the Amazon estuary, Pará, Brazil. The forest canopy characteristics investigated included individual tree height and height to base of the live portion of the crown, forest canopy depth (the distance from the lowest foliage in the understory to the top of the canopy including all free space between top and bottom), forest canopy thickness (the portion of the forest canopy depth occupied only by foliage) and forest canopy density (the sum of lengths of each of the individual crowns that make up forest canopy depth) (see Fig. 2b). The attributes of D. polyacanthos measured included leaf number, stem height and percent coverage within the stands. Results from this study suggest that D. polyacanthos can be encouraged to grow through selective cutting of canopy trees and promotion of regenerating forest stands on terra firme fallow. The protocol used to relate D. polyacanthos abundance and size to kind of forest canopy structure can be used for evaluation of other climbing palms. /// Botânica Econômica. Esses estudo investigou a relação entre a abundância e tamanho de D. polyacanthos e medidas da estrutura do dossel da floresta. Florestas de várzea e terra firme foram selecionadas para o estudo no estuario Amazônico, Pará, Brasil. As características do dossel florestal investigadas incluíram a altura das árvores e a medida da altura entre o topo da copa e a base da copa viva profundidade do dossel florestal (a distância entre a folhagem mais baixa no sub-bosque e o topo do dossel incluindo todo espaço livre entre o topo e a base da folhagem), espessura do dossel (a porção da profundidade do dossel da floresta ocupado somente por folhagem) e densidade do dossel da floresta (a soma do comprimento de todas as copas que compõe a profundidade do dossel) (veja Fig. 2b). Os atributos de D. polyacanthos meridos incluíram número de folhas, altura do tronco e percentual de cobertura dentro do povoamento. Os resultados desse estudo sugerem que D. polyacantos pode ser estimulado a crescer através do corte seletivo de árvores que ocupam o dossel da floresta e da promoção da regeneração florestal em áreas de pousio (resultante de uso agrícola) na terra firme. O protocolo usado para relacionar a abundância e tamanho de D. polyacanthos ao tipo de dossel florestal pode ser usado
ISSN:0013-0001
1874-9364
DOI:10.1007/BF02861044