Vegetation Fire
Mostrando 1-12 de 50 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. Tamaulipan thornscrub after fire: an analysis of the composition of species
Resumo Os incêndios florestais são um elemento natural em muitos ecossistemas terrestres, no México uma das principais causas de perda de cobertura vegetal está relacionada a eles, no entanto, nenhuma pesquisa foi realizada nas comunidades de espinheiros de Tamaulipan sobre as estratégias regenerativas pós-fogo de espécies de plantas, portanto, é imp
Braz. J. Biol.. Publicado em: 25/11/2019
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3. Impacto da queima de vegetação do Cerrado sobre fungos habitantes do solo
Resumo Existem poucos estudos relacionados ao impacto de queimadas sobre os fungos habitantes do solo presente no cerrado. Objetivou-se com este trabalho identificar a micoflora presente em amostras de solos, antes e após o processo de queimada em duas profundidades, observando a interferência deste processo na população de fungos habitantes do solo. As
Ciênc. Florest.. Publicado em: 30/09/2019
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4. Levantamento de plantas de baixa inflamabilidade em áreas queimadas de Cerrado no Distrito Federal e análise das suas propriedades físicas
Resumo Os incêndios florestais se propagam principalmente através do material combustível superficial. Portanto, plantas de baixa inflamabilidade podem ser usadas para proteção contra incêndios, pois dificultam a propagação do fogo. Neste sentido, o objetivo deste trabalho foi realizar um levantamento de plantas de baixa inflamabilidade no cerrado do
Ciênc. Florest.. Publicado em: 30/05/2019
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5. Temporal evaluation of soil chemical attributes after slash-and-burn agriculture in the Western Brazilian Amazon
ABSTRACT. In Amazonia, the main causes of deforestation are systems based on slash-and-burn agriculture. The objective of this work was to evaluate temporal changes in the soil chemical attributes after the vegetation has been slashed and burned in an area of native forest in the Western Amazon. For this study, four hectares of forest in Cruzeiro do Sul, Sta
Acta Sci., Agron.. Publicado em: 28/03/2019
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6. Fire records in tree rings of Moquiniastrum polymorphum: potential for reconstructing fire history in the Brazilian Atlantic Forest
ABSTRACT Fire disturbance affects the composition, structure and dynamics of vegetation. Historical records of fire events exist in some places, but they are generally limited in temporal and spatial extent. Tree-ring research is a useful tool for fire history reconstruction and can contribute important long-term ecological data. We tested the hypotheses tha
Acta Bot. Bras.. Publicado em: 29/11/2018
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7. Soil Biological, Chemical, and Physical Properties After a Wildfire Event in a Eucalyptus Forest in the Pampa Biome
ABSTRACT Wildfire events cause considerable environmental disturbance but few studies have examined changes in soil properties due to fire. This study aimed to assess the effect of a wildfire event on chemical, physical, and biological properties of the soil in a eucalyptus forest in the Pampa biome. Part of a seven-year-old eucalyptus forest was affected by
Rev. Bras. Ciênc. Solo. Publicado em: 23/07/2018
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8. Temporal changes in species composition, diversity, and woody vegetation structure of savannas in the Cerrado-Amazon transition zone
ABSTRACT Vegetation in the transition between tropical forest and savanna is hyperdynamic and there is evidence that in the absence of fire, forest advances over savanna. Between 2008 and 2013 we evaluated changes in species composition and diversity and in the structure of the woody vegetation of savanna physiognomies in the transition between the Cerrado a
Acta Bot. Bras.. Publicado em: 15/01/2018
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9. Leaf anatomical traits of non-arboreal savanna species along a gradient of tree encroachment
ABSTRACT In the Brazilian savanna (Cerrado of Brazil), fire suppression has transformed typical savanna formations (TS) into forested savanna (FS) due to the phenomenon of encroachment. Under encroachment, non-arboreal plants begin to receive less light due to greater tree density and canopy closure. Here we aim to evaluate if leaf anatomical traits of non-a
Acta Bot. Bras.. Publicado em: 19/10/2017
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10. Post-fire resprouting strategies of woody vegetation in the Brazilian savanna
ABSTRACT Post-fire response by vegetation may reflect the severity of the damage suffered, but we still know little about the species-specific nature of responses to fire or their predictors. Here, we evaluated 26 woody species before and after a fire event in an Cerrado sensu stricto area (typical Brazilian savanna-type) in order to evaluate mortality rates
Acta Bot. Bras.. Publicado em: 2017-06
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11. Does fire determine distinct floristic composition of two Cerrado savanna communities on different substrates?
ABSTRACT We surveyed two savanna sites, one on flat terrain with deep soil (DS), and the other on hilly terrain with rocky outcrops and shallow soil (RS), before and after an accidental fire. We found that the fire did not cause any significant changes in the species composition or diversity of either community, and did not result in floristic homogenization
Acta Bot. Bras.. Publicado em: 2017-06
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12. Influence of vegetation physiognomy, elevation and fire frequency on medium and large mammals in two protected areas of the Espinhaço Range
ABSTRACT The objectives of this study were to determine the richness of medium and large mammal species in two protected areas of the Espinhaço Mountain Range, state of Minas Gerais, Brazil; and to investigate the factors affecting the occurrence of those species. To accomplish that we placed 49 camera traps activated by heat and motion at Rio Preto State P
Zoologia (Curitiba). Publicado em: 08/05/2017