Results 191 to 200 of about 2,541 (203)
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Annual litter production in a Brazilian Cerrado woodland savanna
Southern Forests: a Journal of Forest Science, 2020The Brazilian Cerrado is a heterogeneous ecosystem where annual woody-layer litter production shows strong spatiotemporal variation.
Alan N Costa +4 more
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The spectral changes of deforestation in the Brazilian tropical savanna
Environmental Monitoring and Assessment, 2014The Cerrado is a biome in Brazil that is experiencing the most rapid loss in natural vegetation. The objective of this study was to analyze the changes in the spectral response in the red, near infrared (NIR), middle infrared (MIR), and normalized difference vegetation index (NDVI) when native vegetation in the Cerrado is deforested.
Trancoso, Ralph +2 more
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Leaf structure of the cerrado (Brazilian savanna) woody plants
Trees, 2008With the aim of recognizing the commonest leaf pattern found in the woody flora of the cerrado (the Brazilian savanna) we analyzed the leaf anatomy of 30 representative species. The leaves are mostly dorsiventral and hypostomatic and covered by trichomes and a thick layer of wax and cuticle; the vascular bundles are surrounded by a sheath of fibers ...
Bieras, Angela Cristina +1 more
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Fire Management Benefits Tree Growth and Survival in the Brazilian Savanna
Journal of Environmental ManagementThe Cerrado has evolved with natural fires. However, human activities have altered fire regimes; in protected areas (PA), fire has been suppressed for years. Fire exclusion increases fuel loads busting the risk of wildfires, especially during the late-dry season.
Samuel da Rocha Montenegro +5 more
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Not all forests are expanding over central Brazilian savannas
Plant and Soil, 2010Recently we reported on the expansion of riparian forests into savannas in central Brazil. To enlarge the scope of the earlier study we investigated whether upland deciduous and xeromorphic forests behaved similarly. We investigated past vegetation changes that occurred in forest/savanna transitions using carbon isotope ratios (δ13C) measured in the ...
Lucas C. R. Silva +4 more
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Spectral mixture analysis of ASTER image in Brazilian Savanna
IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2004The present work aims to evaluate the advantages of the ASTER sensor for the distinction of Brazilian Savanna vegetation types from spectral mixture analysis. The study area is the Military Instruction Field which has an extensive area with approximately 115.014 ha of native Brazilian Savanna.
O.A. de Carvalho +4 more
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Jacquemontia verae (Convolvulaceae): a new species from Brazilian savannas
PhytotaxaJacquemontia verae is described as a new species from “cerrado rupestre” vegetation in the Cerrado biome of Goiás, Brazil. Line drawings and photographs illustrate the new species, including optical and scanning electron microscope images of pollen. It is compared morphologically with similar species of Jacquemontia and an identification key to species
MAYARA PASTORE +4 more
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Agricultural Use of Sandy Soils in Brazilian Cerrado (Brazilian Savanna)
2023Flávia Cristina dos Santos +4 more
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Brazilian savanna forest : conservation, medicinal reservoir and bioprospecting
2015O estudo objetivou analisar floresta de área de Reserva Legal (RL) de savana brasileira na perspectiva da conservação, reservatório de carbono orgânico e biomassa medicinal para uso prospectivo das plantas medicinais nativas. Foi realizado levantamento etnobotânico e etnofarmacológico junto à comunidade assentada em área rural do Estado do Tocantins ...
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