Summary The illegal harvest of timber and the subsequent production charcoal have been contributing to deforestation Brazilian Amazon its degradation. Analysis wood anatomy is a well-established tool used detect illegally harvested commonly employed in control forestry activities. This study aimed contribute database for anatomical identification from tree species marketed Amazon. macro- microscopic characteristics 15 forest were described. Characteristics that could be described detail,...

Abstract The Brazilian Amazon is vastly deforested by unsustainable practices. Several species of trees are threatened extinction and their exact number hard to quantify. Federal laws prohibit the harvest endangered forest species. It a vast challenge control illegal trade wood especially charcoal in Brazil. goal this work contribute an identification database. presents anatomy Bertholletia excelsa , Hevea brasiliensis Swietenia macrophylla . Structural modifications due carbonization were...

O objetivo do trabalho foi fazer a caracterização processo produtivo e dos resíduos gerados por uma serraria localizada na Região Metropolitana de Belém-

entre os materiais genéticos e as posições radiais.Comparativamente aos híbridos a espécie C. citriodora,

This study aims to understand the effect of initial planting density on anatomical variability and basic wood Schizolobium parahyba var. amazonicum in a planted forest Amazonia. The radial variation from pith bark anatomy was evaluated. There were two densities, density-I (624 trees ha-1) density-II (312 ha-1). Planting significantly affected only ray height, fiber length wall thickness. Radial position not significant height rays lumen diameter. interaction × for vessel elements, frequency...

Objetivou-se verificar a influência da densidade e umidade madeira na energia específica de corte

A tendência de estabilização das dimensões dessas estruturas pode estar indicando a formação madeira adulta partir da região intermediária analisada no lenho espécie.

Foram estudados os efeitos de diferentes umidades sobre o consumo da energia específica corte longitudinal (90-0º) em

Abstract The production of illegal charcoal, associated with other local human practices, is responsible for the degradation native forests, especially in Brazilian Amazon. need market control and charcoal accompanied by lack comparative materials from Here, we describe samples 21 species provide SEM images that can facilitate identification. It possible to distinguish on basis anatomy. Features such as vessel groupings, vessel–ray pitting, perforation plates, axial parenchyma, ray cellular...

Protected areas in the Brazilian Amazon suffer from conflicting activities, such as production of charcoal illegal logging. Charcoal anatomy is an important tool that can be useful for forensic identification and to help conservation these areas. To assist combating deforestation protected areas, this study describes 14 tree species occur Tapirapé–Aquiri National Forest, Pará, Brazil, provides macrographs transverse surfaces scanning electron microscope (SEM) images aid government agencies...

Aim of the study was to estimate influence fiber length and basic density on microfibril angle Eucalyptus microcorys wood. The area in an experimental planting at Universidade Federal de Lavras, Minas Gerais State, Brazil. Three 37 year-old trees were used, from whose stems six centimeter-thick discs removed, cut a high three meters. disks sanded planed highlight growth rings. Specimens taken every 1,5 cm across radius pith bark for determining angle, wood density. angles determined by use...

do lenho dessas espécies foram: camadas de crescimento, estratificação dos raios, arranjo vasos e fileira marginal raios.Quantitativamente, a análise estatística

A biodiversidade da floresta amazônica acompanha intensas taxas de degradação ambiental. Diante disso, ampliar as informações sobre madeiras e carvão vegetal oriundos Amazônia pode auxiliar a fiscalização, contribuindo para conservação local. O objetivo deste trabalho foi caracterizar anatomia madeira do Alexa grandiflora Ducke, além avaliar alterações anatômicas decorrentes processo carbonização. Três indivíduos A. foram analisados, partir corpos prova com dimensão 1,5 cm x 3 obteve-se...

Summary The Brazilian Amazon has the world’s largest concentration of indigenous American peoples, but many environmental threats have affected preservation this enormous human ethnocultural heritage. This study identified species and studied different uses wood by two ethnic groups in Southeastern Pará, Brazil, namely “Gavião” “Suruí”. Ten taxa were identified, distributed eight botanical families, with five being to genus levels. Bertholletia excelsa , an endangered forest is important...

Abstract The bark anatomy was analysed, as the overall chemical composition (extractives, lignin, suberin, ash and polysaccharides), a quantitative elemental analysis performed of two tannin extracts (extracted with water only mixture Na 2 SO 3 ). phenolic antioxidant activity were quantified. results indicated that is composed conductive phloem, nonconductive rhytidome, crystals secretory cells. average 15.9 % extractives, 35.3 total 1.9 15.4 31.5 polysaccharides. condensed yield in extract...

This study aimed to identify challenges in the management of conservation units through a literature review and validate them from perspective professionals field, considering context Amazon Region. To achieve this, survey were conducted with working field unit management. The collected data analyzed using Lawshe method. results indicated that ten out fifteen validated by professionals. included: lack financial resources, urbanization advancement, land conflicts, monitoring enforcement,...

ABSTRACT Casearia sylvestris SW (Salicaceae) is a highly adaptive perennial species that found throughout Latin America and widely spread in Brazil. This work analyzed the ecological features of wood anatomy C. occurring three ecosystem types: Cerrado, Gallery Forest (Northern Minas Gerais) Mata Atlântica (Southern Gerais). Qualitative were similar among plants ecosystems, differing only distribution pith flecks neighboring tyloses more frequent Cerrado Forest. The quantitative results...

This study aims to bring forward helpful anatomical characteristics assist in the identification of Cordia goeldiana Huber, bicolor A.DC. and alliodora (Ruiz & Pav.) Cham., all them commercialized by popular name “freijó” Amazon region. The woods followed orientations International Association Wood Anatomists - IAWA Committee. wood’s found distinguish species were: different types growth layers; type axial parenchyma; presence sheath cells involving rays; frequency diameter vessel elements;...

Abstract The aim of this study was to identify, anatomically characterize, and determine some the physical properties wood species that are used for boat production in southeast region state Pará Brazil. samples were collected during visits shipyards region, then it identified at specie level technologically characterized. Eight belonging four distinct botanical families identified. All had presented type deposition its vessels 87% them medium density (0.40 0.75 g.cm-3). with higher...

Abstract This study evaluated the anatomical and chemical components of bark Protium tenuifolium , a tree species from Brazilian Amazon, to provide information supporting its value in various industries as source polyphenols natural antioxidants. The anatomy was analysed, overall composition (extractives, lignin, suberin, ash polysaccharides), quantitative elemental analysis performed two tannin extracts (extracted with water only mixture Na 2 SO 3 ). phenolic antioxidant activity were...