Silvicultural performance of five forest species in the central Brazilian Amazon

Abstract

Planting of forest species of timber interest helps to reduce the deforestation pressure on the Amazon forest, promotes sustainable development of the producing region and generates ecological benefits. The objective of this work was to evaluate the survival rate and growth of four native (Swietenia macrophylla, Parkia decussata, Dipteryx odorata and Jacaranda copaia) and one exotic (Acacia mangium) species in monospecific plantations (spacing of 2 x 2 m) established on areas previously used for grazing, in Itacoatiara, State of Amazonas, Brazil. When the trees were four years old, we collected biometric data )], e dados qualitativos obtidos por diagnose visual [taxa de sobrevivência (S; %), estado nutricional (NS, G: bom; D: deficiente; %) e estado fitossanitário (PS, S: satisfatório; NS: não-satisfatório; %). Para cada espécie considerouse três parcelas de 128 m 2 , cada uma com 32 plantas. Jacaranda copaia, seguida de Dipteryx odorata e Parkia decussata, foram as espécies mais recomendadas para o plantio em áreas com condições edafoclimáticas semelhantes às do presente trabalho, devido ao seu melhor desempenho para a maioria das variáveis.

Can timber provision from Amazonian production forests be sustainable?

“…Tree plantations have the potential to produce large quantities of timber on relatively small areas: timber plantations in Brazil, mostly fast-growing eucalyptus and pine, can produce 200-400 m 3 ha −1 of roundwood on 10-15 year cycles [65]. Such exotic species produce low-grade timber that is not directly equivalent to high-value wood currently extracted from Amazonian natural forests, but there is a potential to develop plantations of high-value native species [66,67], even though technical alternatives are still scarce in Amazonia [67]. Moreover, it is likely that with ongoing technological advances, future high-grade timber demand will be gradually substituted by less-valuable fast-growing timbers transformed into highlyresistant materials [68].…”

Acacia mangium Willd: benefits and threats associated with its increasing use around the world

“…Monospecific plantations of four native species (Dipteryx odorata, Jacaranda copaia, Parkia decussata, and Swietenia macrophylla) and the exotic A. mangium established to restore pasture areas, have shown a decline in silvicultural performance e.g., biometric data, crown projection area, total height, commercial cylinder volume etc. of A. mangium compared to other species (Machado et al 2018). These authors did not recommend A. mangium for restoration because of its limited performance in relation to most of the variables that were assessed.…”

Leaf-based characterization of intermediate forms between Cuban and Honduran mahogany

“…In turn, in a study on the silvicultural performance of five forest species (Dipteryx odorata, Parkia decussata, Jacaranda copaia, Acacia mangium and Swietenia macrophylla) in the Amazon rainforest in Brazil conducted by Machado et al (2018) the hierarchical cluster analysis showed that the species D. odorata and P. decusata showed similarities forming a group with a slightly lower similarity with J. copaia, these three species reported the greatest similarities in the diametric variables evaluated diameter at breast height, total height, crown projection area and volume of the commercial cylinder in this study. On the other hand, D. odorata, J. copaia and P. decussata showed less similarity with the other native species S. macrophylla.…”