Canopy Flow
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Litterfall dynamics in a iron-rich rock outcrop complex in the southeastern portion of the Iron Quadrangle of Brazil
Ecosystems on cangas (duricrust) present considerable heterogeneity of habitats due to microtopographic variations, soil accumulation and a variety of plant functional groups. Therefore, spatial and temporal ecosystem processes such as litterfall are to be expected to be large, and the absence of a level of productivity represents all the facets of iron-rich
Acta Bot. Bras.. Publicado em: 2013-06
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2. Biomass flow in Tifton-85 bermudagrass canopy subjected to different management strategies under rotational grazing with dairy goats
Biomass flow characteristics and forage accumulation were evaluated in Bermudagrass (Tifton 85) pasture managed under intermittent stocking with different management strategies. The management levels utilized were conventional (10 cm residual height and unfertilized), light (20 cm residual height and unfertilized), moderate (20 cm residual height with fertil
R. Bras. Zootec.. Publicado em: 2013-02
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3. Automatização de um pulverizador hidropneumático visando o controle do espectro de gotas em função do déficit de pressão de vapor dágua do ar / Automation of a hydro-pneumatic sprayer for controlling droplet spectrum in function of deficit of water vapor pressure in the air
Pesticide spraying is one of the most repeated operations in farms, this has occurred mainly due to adoption of no tillage. Facility for purchasing pesticides is notorious throughout Brazil. However, technology for its application has been difficult to reach the producers, even in regions with high agricultural potential. This work aimed to develop a system
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/04/2012
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4. Ecologia trófica da ictiofauna e simpatria de espécies congenéricas no córrego da Lapa, bacia do Alto Paraná, estado de São Paulo, Brasil
Streams and rivers are loctic environments characterized for a strong and unidirectional water flow. These environments in general have the light incidence partial or totally obstructed by the canopy of the riparian vegetation showing a high dependence of allocthonus organic inputs. The stream fishes are usually small sized, with reproductive strategies adap
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2011
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5. Produção e colheita mecanizada de sementes de capim Pojuca.
ABSTRACT: In the Brazilian Central Region, flowering of Paspalum atratum cv. Pojuca is concentrated from mid February to mid March and seed maturation occurs from mid March to mid April, at the onset of the dry season. Use of combine harvesters is an excellent option Pojuca seed production areas because, besides this concentrated flowering and uniform seed m
Planaltina. Publicado em: 2011
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6. Evapotranspiration determination by the methods of water and the chloride balances and the quantification of canopy interception in the Atlantic Forest: São Paulo, SP and Cunha, SP / Determinação da evapotranspiração pelos métodos dos balanços hídrico e de cloreto e a quantificação da interceptação das chuvas na Mata Atlântica: São Paulo, SP e Cunha, SP
The present study aims the quantification of the interception of the rains by the trees canopy and the determination of the real evapotranspiration by the methods of the water and the chloride balances. For that, it was established the monitory of two experimental catchments situated at Dense Ombrófila Forest (Atlantic Forest) one of them, in Parque Estadua
Publicado em: 2009
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7. INVESTIGAÇÃO NUMÉRICA DO ESCOAMENTO DENTRO E ACIMA DO DOSSEL DE FLORESTAS / NUMERICAL INVESTIGATION OF FLOW WITHIN AND ABOVE FOREST CANOPY
This work investigates different procedures in order to study the turbulent flow over the scale model of a forest region. Initially, the canopy flow was modeled by using source terms in the momentum, turbulent kinetic energy and its dissipation rate equations. After that, the forest canopy was considered a homogeneous porous medium. In the last step, the can
Publicado em: 2007
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8. Perfomance of coffee plant (Coffea arabica L.) to drip irrigation levels / Resposta do cafeeiro (Coffea arabica L.) à lâminas de irrigação por gotejamento
This study evaluated coffee plant Ruby, line MG-1192, vegetative development, yield and berry quality, cultivated under irrigation levels during five years. The experiment was done in a loamy red latosol, at Experimental Farm of Glória, located to 1858 S and 4812 W, and approximately 890 m above sea level, in the county of Uberlândia, in Minas Gerais, Braz
Publicado em: 2007
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9. Estudo numérico do escoamento turbulento em modelos florestais / Numerical study of the turbulente flow at canopy models
O objetivo deste trabalho é o estudo numérico do escoamento turbulento em modelos florestais caracterizados através de modelos. Os modelos em questão são o de um cilindro e de uma matriz de cilindros. Foram utilizadas téecnicas híbridas de simulação de escoamentos turbulentos, simulação de grandes escalas e a simulação via decomposicao de Reynol
Publicado em: 2006
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10. Um estudo sobre características do subdomínio inercial da turbulência desenvolvida em escoamento acima e dentro da copa da Floresta Amazônica de terra firme e acima do Pantanal Matogrossense / An study about statistical characteristics of inertial subrange of developed turbulence in flows above and below of Amazonia Forest canopy and above Pantanal Matogrossense
In this work turbulent data measured in two micrometeorologicaly different regions, sampled at 60 Hz, were used. The first data set was obtained at a tower in the Rebio-Jaru Reserve, during an intensive campaign of the Large Scale Biosphere Atmosphere Experiment in Amazonia - (LBA) in 1999. The second set was obtained in the Pantanal Matogrossense, Interdisc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/06/2002
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11. Genetic rescue of remnant tropical trees by an alien pollinator.
Habitat fragmentation is thought to lower the viability of tropical trees by disrupting their mutualisms with native pollinators. However, in this study, Dinizia excelsa (Fabaceae), a canopy-emergent tree, was found to thrive in Amazonian pastures and forest fragments even in the absence of native pollinators. Canopy observations indicated that African honey