Amazon Tree Species
Mostrando 13-24 de 57 artigos, teses e dissertações.
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13. Diversity of Arbuscular Mycorrhizal Fungi in an Amazon Environment after Mining
ABSTRACT At the Brazilian Amazon forest, studies were carried out to estimate the community of arbuscular mycorrhizal fungi (AMF), from this it was used a bioassay of dilutions of samples collected from preserved and regenerated areas after bauxite extraction. To regenerate areas, tree species were introduced and samples were taken after 2, 6, 12, and 16 ye
Floresta Ambient.. Publicado em: 16/07/2018
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14. Sampling procedures for inventory of commercial volume tree species in Amazon Forest
ABSTRACT The spatial distribution of tropical tree species can affect the consistency of the estimators in commercial forest inventories, therefore, appropriate sampling procedures are required to survey species with different spatial patterns in the Amazon Forest. For this, the present study aims to evaluate the conventional sampling procedures and introduc
An. Acad. Bras. Ciênc.. Publicado em: 2017-09
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15. Phenology of the multi-use tree species Carapa guianensis in a floodplain forest of the Amazon Estuary
ABSTRACT Carapa guianensis is a multi-use tree species that is used for the production of timber and non-timber forest products (NTFPs) that are used and sold by rural Amazonian populations. Here we aimed to evaluate the phenophases of C. guianensis in várzea forest and relate them to climatic seasonality. Phenophases of flowering (flower buds and open flow
Acta Bot. Bras.. Publicado em: 2016-12
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16. Impact of Site Conditions Changes on the Tree Ring Records Suitability as Climate Proxies in the Brazilian Amazon
ABSTRACT The increment zones width in the xylem of Swietenia macrophylla King was investigated by dendrochronological methods in an undisturbed and a strongly disturbed tropical site near Aripuanã, Mato Grosso, Brazil (10°09’ S, 59°26’W). The study aimed to assess the impact of forest disturbance on the relationship between precipitation and the cambi
Floresta Ambient.. Publicado em: 03/05/2016
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17. Particleboard manufactured from Tauari (Couratari oblongifolia) wood waste using castor oil based polyurethane resin
Several wood species from the Amazon region are used in the manufacture of furniture, which leaves behind large amounts of waste (slabs, sawdust, sanding dust and bark), thus causing serious environmental impacts. An interesting alternative for the use of these wastes is the manufacture of particleboards. However, few studies have focused on the behavior of
Mat. Res.. Publicado em: 18/02/2014
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18. Anatomia comparada do lenho e do carvão aplicada na identificação de 76 espécies da floresta Amazônica, no estado do Pará, Brasil / Comparative anatomy of the wood and charcoal applied in the identification of 75 species of the Amazon forest in the state of Pará, Brazil
A antracologia, como ciência, tem como objetivo a análise da estrutura anatômica dos carvões vegetais arqueológicos e modernos direcionada para a paleoecologia, paleoetnobotânica, identificação das espécies, etc. No Brasil, a identificação de espécies florestais através da análise dos carvões vegetais atuais reveste-se de importante caráter c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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19. Seed size influence on germination responses to light and temperature of seven pioneer tree species from the Central Amazon
Na Amazônia as florestas secundárias são dominadas por espécies pioneiras que, normalmente, produzem grandes quantidades de sementes pequenas, dormentes e capazes de formar bancos de sementes no solo. A dormência neste grupo de espécies é superada pelas condições ambientais de áreas abertas, como alta irradiação ou alternância de temperaturas. N
Anais da Academia Brasileira de Ciências. Publicado em: 2012-09
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20. Effects of flooding and shading on growth and gas exchange of Vochysia divergens Pohl (Vochysiaceae) of invasive species in the Brazilian Pantanal
Vochysia divergens Pohl (commonly known as cambara) is a pioneer tree species that is native to the Amazon Basin but has been invading the seasonally flooded wetlands of the Brazilian Pantanal, forming monospecific communities. The physiological aspects associated with cambara invasion, including the effects of flooding and shading on growth and leaf gas exc
Braz. J. Plant Physiol.. Publicado em: 2012-06
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21. Morphoanatomy and pharmacognostic study of the wood of Croton echioides, the Northeastern Marapuama
Croton echioides Baill., Euphorbiaceae, is a small tree found in Bahia, Northeastern Brazil. Its stem bark has been widely sold as an aphrodisiac and tonic, as a substitute for the roots of Ptychopetalum olacoides Benth. Olacaceae, the Amazon Muira Puama or Marapuama, and C. echioides is characterized as the "Northeastern Marapuama". This contribution descri
Rev. bras. farmacogn.. Publicado em: 15/05/2012
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22. Species composition and reproductive modes of anurans from a transitional Amazonian forest, Brazil
The aim of the present study was to describe the species composition and reproductive modes of an anuran community from a transition area between the Amazonia and Cerrado biomes. Data were collected in habitats exhibiting different degrees of anthropogenic degradation. The community (35 species) identified during the present study presented a larger number o
Zoologia (Curitiba). Publicado em: 2012-02
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23. Constituintes químicos dos galhos de Simaba guianensis subesp. ecaudata (Cronquist)
Simaba guianensis subesp. ecaudata (Simaroubaceae) is a tree found in the Brazilian Amazon. This work describes for the first time the fractionation of stems of this species that resulted in the isolation of the cytotoxic triterpene piscidinol A, the alkaloid 9-methoxycanthin-6-one, caryophyllene oxide, also isolated for the first time from this species and
Quím. Nova. Publicado em: 2012
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24. Diversidade de estratégias ecológicas das espécies de árvore dominantes de uma floresta de terra firme da Amazônia Central / Diversity of ecological strategies of the dominant tree species from a terra-firme forest in Central Amazonia
As plantas têm diversos modos de resolver problemas como a escassez de recursos, o ataque de herbívoros ou a perda de água. O modo como uma planta resolve um desses problemas pode ser considerado uma tática e o conjunto dessas táticas constitui uma estratégia ecológica. As estratégias só são possíveis porque as plantas têm uma série de atributos
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/09/2011