Shifting Cultivation
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Population structure and fruit availability of the babassu palm ( Attalea speciosa Mart. ex Spreng) in human-dominated landscapes of the Northeast Region of Brazil
ABSTRACT We studied the population structure and fruit availability of the babassu palm, Attalea speciosa, in three human-dominated landscapes located near a rural community in the region of Araripe, in the Northeast Region of Brazil, that were under intense fruit harvest. Fifty 10 x 10 m plots were randomly established in each of the three landscapes, and a
Acta Bot. Bras.. Publicado em: 2017-06
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2. Ecologia Política da comida e nutrição em duas comunidades quilombolas do Vale do Ribeira (Estado de São Paulo, Brasil) / Political Ecology of food and nutrition for two Quilombola communities from Ribeira River Valley (São Paulo State, Brazil)
Quilombolas are African slave descendants. The Ribeira Valley is one of the most important areas of concentration of Quilombos in Southern Brazil. The Ribeira Quilombolas are settled in remote areas along the Ribeira River system covered by Atlantic rain forest vegetation, one of the worlds biodiversity hotspots. Since the first settlements (18th Century), t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/04/2011
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3. Alternativa agroflorestal para pequenos produtores agrícolas em áreas de terra firme do município de Santarém, Pará.
1993
Belém. Publicado em: 2011
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4. Estoques de biomassa e de nutrientes de pousios enriquecidos com Inga edulis Martius em áreas com histórico de agricultura e de pecuária no Assentamento Tarumã-Mirím, Manaus- AM / Stocks of biomass and nutrients in forest fallow enriched with Inga edulis Martius in sites with a history of agriculture and pasture in the rural settlement Tarumã-Mirím, Manaus - AM
Deforestation rates of primary forests in the humid tropics have been growing intensively in recent years, due mainly to the development of shifting cultivation and extensive pasture. After forest fragmentation and conversion to agricultural use, the cleared areas of rainforest are usually abandoned so there is natural regeneration of vegetation and slow res
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/12/2009
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5. No caminho dos antigos: agricultura de corte-e-queima e intensificação agrícola em populações quilombolas do Vale do Ribeira, SP / On the old onestrack: shifting cultivation and agricultural intensification on quilombola populations at the Ribeira Valley, SP
Slash-and-burn agriculture has been practiced for thousands of years in the forests around the world, especially in the tropics, where it provides for the livelihood of countless poor rural populations. Many studies claim that slash-andburn agriculture is sustainable when performed under conditions of low human demographic density, maintaining or even increa
Publicado em: 2008
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6. Traditional agriculture and agrobiodiversity management in Central Amazon: a study case in the roçados (swidden cassava`s field) in Amanã and Mamirauá Reserves, Amazonas / Agricultura tradicional e manejo da agrobiodiversidade na Amazônia Central: um estudo de caso nos roçados de mandioca nas Reservas de Desenvolvimento Sustentável Amanã e Mamirauá, Amazonas
This study had the objective of understanding the agrobiodiversity management dynamics in roçados (swidden fields of cassava) in riverine communities of the Amanã and Mamirauá Sustainable Reserves in the Amazon and its relations with production, space and work management adopted by the families. The methodology adopted was based on the agrarian systems th
Publicado em: 2008
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7. A STUDY OF THE DISTRIBUITION OF 2,4-D HERBICIDE IN AGRICULTURAL SOILS OF THE REGION OF SÃO PEDRO DA SERRA -RJ, AND ITS ENVIRONMENTAL SIGNIFICANCE / ESTUDO SOBRE A DISTRIBUIÇÃO DO HERBICIDA 2,4-D NOS SOLOS DA REGIÃO DE SÃO PEDRO DA SERRA-RJ E SUA IMPORTÂNCIA AMBIENTAL
The São Pedro da Serra Region has two types of tillage for the sowing soil, the shifting cultivation is based on the soil area rotation and the traditional utilize high amount of agro-toxics products. The aim of this work is to study the 2,4 D herbicide fixation and mobilization from the soil characteristics and the tillage. The cultivated areas were divide
Publicado em: 2007
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8. Soil carbon and nitrogen stocks and fertility in areas in recuperation with leguminous trees and on shifting cultivation system area with high productivity. / Estoque de carbono, nitrogênio e fertilidade do solo em áreas em recuperação com leguminosas e em sistema de agricultura itinerante de alta produtividade .
This study aimed to evaluate carbon and nitrogen stocks restoration, and soil fertility status in land reclamation with nodulated and mycorrhizal legume trees and fallow length on high productivity shifting cultivation. Evaluations were made of soil C and N stocks, concentration of free and occluded light fraction and soil available Ca, Mg, P, K, C and N, an
Publicado em: 2007
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9. Estrategias de pesca e utilização de animais por comunidades pesqueiras da Ilha Grande, RJ
Human ecology deals with the interactions and adaptations of humans to the biological as well as to social-economic and cultural environment. In this study I analyze the use of acquatic and terrestrial animals,mainly vertebrates, in two fishing communities from Ilha Grande, Brazil: Aventureiro and Provetá. Aventureiro is a isolated community, located in the
Publicado em: 1997
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10. Generation mechanism and purification of an inactive form convertible in vivo to the active form of quinoprotein alcohol dehydrogenase in Gluconobacter suboxydans.
Alcohol dehydrogenase (ADH) of acetic acid bacteria is a membrane-bound quinohemoprotein-cytochrome c complex involved in vinegar production. In Gluconobacter suboxydans grown under acidic growth conditions, it was found that ADH content in the membranes was largely increased but the activity was not much changed, suggesting that such a condition produces an