Forests Amazon
Mostrando 49-60 de 122 artigos, teses e dissertações.
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49. Análise de imagem polarimétrica TerraSAR-X para classificação de uso e cobertura da terra na porção sudoeste da Amazônia Brasileira / TerraSAR-X image for classification the land use and land cover in the southwest portion of the Brazilian Amazon
The objective of this study is to analyze the potential use of images from satellite TerraSAR-X, at StripMap acquisition mode, to map and identify the land use and land cover (LULC) in the southwestern Brazilian Amazon. Classifiers based on statistical functions for maximum likelihood (ML) method and based on frequency-based contextual and neural network cla
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2011
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50. In vitro cytotoxic effects of Brazilian plant extracts on squamous cell carcinoma of the oral cavity
Squamous cell carcinoma (SCC) is the most prevalent cancer of the oral cavity and the fifth most prevalent of all malignancies in males. Many researchers have attempted to develop new treatments that will improve the prognosis of SCC patients. Over 20% of the world's biodiversity is located within the Brazilian forests, but little is known about the chemical
Brazilian Oral Research. Publicado em: 2011-12
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51. Activity pattern of Cuniculus paca (Rodentia: Cuniculidae) in relation to lunar illumination and other abiotic variables in the southern Brazilian Amazon
Understanding what influences the activity of organisms is important for both ecological understanding and species conservation. Using data from 2,707 camera trap days distributed across 24 forest sites, we present quantitative analyses of the activity pattern of Cuniculus paca (Linnaeus, 1766) in southern Amazonia. We compared the activity pattern of this s
Zoologia (Curitiba). Publicado em: 2011-12
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52. Cerrado ground-dwelling ants (Hymenoptera: Formicidae) as indicators of edge effects
Large-scale agricultural production in Brazil preferentially occupies plateaus reclaimed from areas originally covered by Cerrado (savanna). Depending on the region, a percentage of the pristine vegetation coverage must be preserved by law, resulting in the creation of fragmented legal Cerrado reserves. The geometry of these relatively small legal reserves c
Zoologia (Curitiba). Publicado em: 2011-06
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53. Effects of silvopastoral systems on the production of buffaloes on Eastern Amazon, Brazil.
The silvopastoral systems (SPS) are characterized by the deliberate combination of trees, pasture and animals in the same area and at the same time. In these systems, the components present integrated management, with the aim of increasing productivity per area unit, with interaction in all directions and at different magnitudes. These production systems aim
WORLD BUIATRICS CONGRESS. Publicado em: 2011
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54. Estimativas de biomassa e carbono e indicadores para restauração de florestas secundárias em Paragominas, Pará / Biomass and cabon estimations and ecological indicators for secondary forest restoration in Paragominas, Pará
Os ecossistemas florestais são considerados reservatórios de carbono e têm sido apontados como alternativas para redução de gases do efeito estufa, principais responsáveis pelas mudanças climáticas globais, devido ao acúmulo de biomassa em seus tecidos durante seu desenvolvimento. Assim, surgiu uma grande demanda por pesquisas que quantifiquem o pot
Publicado em: 2011
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55. DIVERSIDADE DE ÁCAROS EDÁFICOS (ACARI: ORIBATIDA) E REDUÇÃO DO ESFORÇO AMOSTRAL NO GRADIENTE ECOLÓGICO DE 10 MIL HA DE FLORESTA DE TERRA-FIRME DA RESERVA DUCKE, MANAUS, AM, BRASIL
Sampling oribatid mites in large areas using conventional methods is expensive, timeconsuming, and this constrains their use on monitoring program. In 2001/2002, a system of 9 N-S and 9 E-W trails was installed in the reserve. Following the RAPELD method, plots were distributed over a 64 km2 grid of trails spaced 1 km apart, resulting in 72 plots with a mini
Publicado em: 2010
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56. GENÉTICA, DISTRIBUIÇÃO E CONSERVAÇÃO DO GAVIÃO-REAL (Harpia harpyja) NO BRASIL
The harpy eagle occurs in the forests of the Neotropical region; it is widely distributed in Brazil where its occurrence has been principally registered in the Amazonian and Atlantic rainforests. Between these two biomes exists a corridor of open vegetation with forest connections where this species has also been registered. Brazilian forests have been drast
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/06/2009
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57. Ecological niche modelling and differentiation between Rhodnius neglectus Lent, 1954 and Rhodnius nasutus Stål, 1859 (Hemiptera: Reduviidae: Triatominae) in Brazil
Ecological niche modelling was used to predict the potential geographical distribution of Rhodnius nasutus Stål and Rhodnius neglectus Lent, in Brazil and to investigate the niche divergence between these morphologically similar triatomine species. The distribution of R. neglectus covered mainly the cerrado of Central Brazil, but the prediction maps also re
Memórias do Instituto Oswaldo Cruz. Publicado em: 2009-12
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58. El quintal y las frutas: recursos económicos y alimentares en la comunidad negra de Itacoã, Acará, Pará, Brasil
In this study, 46 fruit-bearing species were inventoried in the black community of Itacoã, Acará ( Pará, Brazil), a few kilometers from the city of Belém in the Amazon estuary. The various productive activities carried out by families and their relationship to income generation were also investigated. The main methods used were interviews and visits to h
Acta Amazonica. Publicado em: 2009-03
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59. Tamanho de parcelas para quantificação de biomassa e carbono em uma floresta ombrófila densa na Mata Atlântica / Size of fragments for the quantification of biomass and carbon in a thick ombrophilous rainforest in Mata Atlântica
Rainforest is defined as a vegetable formation which takes up a large part of the Brazilian territory, from the Amazon Rainforest to the forests of the highlands of the southern states of Brazil, going through the Atlantic Forest. Due to the type of colonization Brazil had , which was a colonization of exploitation, a large part of this forest was destroyed,
Publicado em: 2009
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60. O papel das lideranças comunitárias em projetos de saúde e ambiente : uma análise das redes sociais em comunidades do Rio Tapajós, Pará
Deforestation practices in Amazon region lead to the development of two health problems related to inappropriate land use. One of them is mercurial contamination, which occurs through the erosion and lixiviation of the soil, when the mercury naturally found on the ground of the region contaminates the aquatic eco-system, accumulating in the trophic chains re
Publicado em: 2009