Shrub Tree Vegetation
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Effect of fire under the soils on the organization of communities of three remnants of Amazonian savannas
ABSTRACT Areas of cerrado (Brazilian savanna) in the Amazon have been poorly studied from the perspective of fire impacts on environmental sustainability, especially with regard to disturbances to soil and vegetation structure. This study aimed to analyze the influence of edaphic variables and fire together on the composition and structure of tree and shrub
Acta Bot. Bras.. Publicado em: 2020-09
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2. Conservation of species-rich subtropical grasslands: traditional management vs. legal conservation requirements in primary and secondary grasslands
ABSTRACT Land-use change is the main cause of biodiversity losses, and for grasslands includes changes in management. The last 10 years has seen afforestation of traditionally grazed grasslands increase considerably in the understudied Serra do Sudeste region of the Brazilian Pampa, turning the region into a mosaic of tree plantations, natural ecosystems (pa
Acta Bot. Bras.. Publicado em: 2020-06
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3. Spatial-temporal variation in litterfall in seasonally dry tropical forests in Northeastern Brazil
Resumo A produção de serapilheira é essencial para a ciclagem de nutrientes em ecossistemas terrestres. De Novembro de 2009 a Outubro de 2011, foi analisada a produção de serapilheira em duas áreas de Caatinga, um tipo de Floresta Tropical sazonalmente Seca localizada no Cariri Paraibano, na região do semiárido da Paraíba, Nordeste do Brasil. Uma da
Braz. J. Biol.. Publicado em: 05/08/2019
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4. 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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5. ANÁLISE DA VEGETAÇÃO EM UM FRAGMENTO DE CAATINGA NO MUNICÍPIO DE PORTO DA FOLHA, SERGIPE, BRASIL. / ANALYSIS OF VEGETATION IN A SHRED OF THE MUNICIPALITY OF PORT CAATINGA LEAF, SERGIPE, BRAZIL.
O presente trabalho foi realizado em um fragmento de Caatinga com aproximadamente 50 ha, pertencente à fazenda São Pedro, localizada no município de Porto da Folha, Sergipe, objetivando conhecer a composição florística e a estrutura fitossociológica do componente herbáceo e arbustivo-arbóreo, verificar as relações fitofisionômicas do estrato arbu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/06/2012
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6. The tree-shrub vegetation in rocky outcrop cerrado areas in Goiás State, Brazil
We describe the floristic composition of the tree-shrub vegetation in 10 areas of rocky outcrop cerrado in Goiás State, Brazil. Ten 20×50m plots (totaling 1ha) were established and all of the individuals with diameters at 30cm above soil level (DB30) ³5cm were included in the sampling. Comparative analyses of the flora were realized using similarity indic
Braz. J. Bot.. Publicado em: 2012
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7. Influence of edaphic variables on the floristic composition and structure of the tree-shrub vegetation in typical and rocky outcrop cerrado areas in Serra Negra, Goiás State, Brazil
The present study analyzed the influence of edaphic variables on the floristic compositions and structures of the arboreal and shrub vegetation of typical cerrado (TC) and rocky outcrop cerrado (RC) communities in the Serra Negra mountain range in Piranhas Municipality, Goiás State, Brazil. Ten 20×50m plots were established in each community, and all indiv
Braz. J. Bot.. Publicado em: 2012
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8. Floristic composition of a conservation area in the Federal District of Brazil
Cerradão vegetation shares many species with savanna and forest areas and is one of the most vulnerable phytophysiognomies in the Cerrado (Brazilian savanna) biome. The floristic composition of the Cerradão Biological Reserve was examined between September/2007 and November/2008. A total of 282 species distributed among 194 genera and 75 families were enco
Braz. J. Bot.. Publicado em: 2012
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9. Effect of thinning and slashingon forage phytomass from a caatinga of Petrolina, Pernambuco, Brazil.
The effect of woodland manipulation on forage phytomass was studied in a Caatinga of Petrolina, PE, Brazil. There were five treatments: 1) Control of native vegetation; 2) Thinning 1/3 of shrub canopy cover; 3) Thining 2/3 of shrub cover; 4) Caatinga slashing; and 5) Treatment 4 + burning. Slashing and burning were carried out in September/84, and thinning d
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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10. Management of lianas in semideciduous forest and cerradão edges, Santa Rita do Passa Quatro, SP / Manejo de lianas em bordas de floresta estacional semidecidual e de cerradão, Santa Rita do Passa Quatro, SP
In São Paulo state, throughout the same climatic zone, semideciduous forests and cerradão patches commonly share the same geographic area. Currently, these two formations are reduced to small fragments, in advanced stage of disturbance. Along with the fragmentation of the forest, there is an increase in ligth incidence at the edges and lianas generally inc
Publicado em: 2010
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11. Avaliação do efeito de borda sobre a vegetação do cerrado stricto sensu inserido em matriz de pastagem / Edge effects on plant community of cerrado sensu stricto inserted into a matrix of pasture
From the Brazilian biomes, the Cerrado has been the most widely and rapidly converted to agribusiness in recent years. The expansion of agricultural frontier over the Cerrado domain resulted in thousands of small fragments embedded in matrices of low similarity, causing a series of negative impacts on the natural ecosystem. Habitat fragmentation is considere
Publicado em: 2010
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12. Influência das inundações na distribuição de espécies arbóreas ao longo do Rio Massaguaçu (Caraguatatuba, São Paulo, Brasil), e potencial alelopático de Annona glabra L.
The vegetation of blind estuary of the Massaguaçu River in Caraguatatuba, is subject to periodical flooding. This flooding regime may be an important factor over the local tree composition and distribution. The present research purpose was to determine the tree-shrub species distribution on the Massaguaçu river estuary, related to flooding regime. Upstream
Publicado em: 2009