Results 41 to 50 of about 16,208 (203)

Discrimination of native wood charcoal by infrared spectroscopy [PDF]

open access: yes, 2010
Brazil is one of the largest producers and consumers of charcoal in the world. About 50% of its charcoal comes from native forests, with a large part coming from unsustainable operations.
Alves de Macedo, Lucelia   +4 more
core   +3 more sources

A reverse chemical ecology approach to explore wood natural durability [PDF]

open access: yes, 2020
The natural durability of wood species, defined as their inherent resistance to wood‐destroying agents, is a complex phenomenon depending on many biotic and abiotic factors.
Beauchène J.   +11 more
core   +3 more sources

Interspecific variation in leaf phenology and its relationship with plant traits in a seasonal tropical forest

open access: yesFunctional Ecology, Volume 40, Issue 2, Page 433-450, February 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Leaf phenology plays an important role in plant life‐history strategies and in determining ecosystem‐level fluxes of carbon and water. In seasonal tropical forests, leaf phenology is highly variable among tree species, but limited quantitative data have hindered our ...
John Y. Park   +4 more
wiley   +1 more source

Host Status of Brazilian Native Tree Species to Root‐Knot Nematodes

open access: yesForest Pathology, Volume 56, Issue 1, February 2026.
ABSTRACT Root‐knot nematodes (RKN, Meloidogyne spp.) are among the most important plant pathogenic organisms, causing significant damage, with a wide geographical distribution and being difficult to control. The ability of these nematodes to parasitize native trees from Brazilian biomes is little understood.
Ismail Teodoro de Souza Júnior   +6 more
wiley   +1 more source

Fraccionamiento y caracterización química del extracto en butanol obtenido de la corteza interna de Tabebuia rosea (Bertol.) DC [PDF]

open access: yes, 2016
Tabebuia rosea (Bertol.) DC. es un árbol conocido en Colombia como guayacán morado o flor rosado, nativo de centro y sur América, perteneciente a la familia Bignoniácea.
Betancourt Orozco, Xavier Andrés   +1 more
core  

The Effect of Height, Wing Length, and Wing Symmetry on Tabebuia rosea Seed Dispersal [PDF]

open access: yesJournal of Science International School Bangkok, 2014
The relationship between the vertical drop height and the horizontal distance traveled (dispersal ratio) was investigated for a sample of fifty Tabebuia rosea seeds by dropping the seeds from five heights ranging from 1.00 to 2.00 meters.
Yasmeen Moussa   +2 more
doaj   +2 more sources

Tabebuia rosea (pink poui).

open access: yes, 2020
Abstract T. rosea is a medium to large tree attaining a height of 28-37 m with a d.b.h. of 50-100 cm. It is widespread from Mexico to Peru, Venezuela and Ecuador. T. rosea is a very important species in these regions, its timber is valuable and of good quality, it is excellent to work and has an attractive finish.
openaire   +1 more source

Thioether-catalysed tandem synthesis of furans and cyclic ethers or lactones [PDF]

open access: yes, 2017
Acyclic conjugated ynenediones tethered to an alcohol or carboxylic acid are converted into furanyl-substituted cyclic ethers or lactones in a single step by treatment with the tetrahydrothiophene.
Clark, J. Stephen, Klaus, Verena
core   +1 more source

Mapping the density of giant trees in the Amazon

open access: yesNew Phytologist, Volume 249, Issue 1, Page 152-168, January 2026.
Summary Tall trees (height ≥ 60 m) are keystone elements of tropical forests, strongly influencing biodiversity, carbon storage, and ecosystem resilience. Yet, their density and spatial distribution remain poorly quantified, especially in remote Amazonian regions, limiting our understanding of their ecological roles and contribution to forest–climate ...
Robson Borges de Lima   +20 more
wiley   +1 more source

Naphthoquinone derivatives and lignans from the Paraguayan crude drug [PDF]

open access: yes, 2003
Schmeda-Hirschmann,G. Laboratorio de Quımica de Productos Naturales,Instituto de Quımica de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile.The Paraguayan crude drug “tayı¨ pyta´” is used to treat cancer, wounds and inflammation.
Papastergiou, F., Schmeda-Hirschmann, G.
core  

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