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Brazilian Savanna Height Estimation Using UAV Photogrammetry
2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021Unmanned aerial vehicles (UAVs) have been advancing in precision and cost-benefit for remote sensing studies, including height and biomass estimations. This article presents a preliminary experiment to explore UAV photogrammetry to estimate canopy height in savanna and grassland phytophysiognomies in the Brazilian Cerrado biome.
Andeise Cerqueira Dutra +7 more
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Ammonia Oxidisers in a Non-Nitrifying Brazilian Savanna Soil. [PDF]
FEMS Microbiology Ecology, 2017 Low nitrification rates in Brazilian savanna (Cerrado) soils have puzzled researchers for decades. Potential mechanisms include biological inhibitors, low pH, low microbial abundance and low soil moisture content, which hinders microbial activity, including ammonia oxidation.
Ricardo H Krüger +2 more
exaly +5 more sources
Diversity of Archaea in Brazilian savanna soils
Archives of Microbiology, 2013Although the richness of Bacteria and Fungi in Cerrado' soils has been reported, here we report, for the first time, the archaeal community in Cerrado's soils. DNA extracted from soil of two distinct vegetation types, a dense subtype of sensu strict (cerrado denso) and riverbank forest (mata de galeria), was used to amplify Archaea-specific 16S rRNA ...
E, Catão +4 more
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Phenology and its relation to precipitation in the Brazilian savanna
2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015Vegetation phenology is influenced by the photoperiod, precipitation, soil, air temperature and solar illumination, and as such varies greatly along geographic gradients, vegetation types and climatic zones. In this work, focused in the Brazilian savanna, we analyzed the phenology of the main physiognomies and its relation to precipitation.
Arielle Elias Arantes +2 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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Fires in the cerrado, the Brazilian savanna
2009The cerrado is the largest area savanna formation in South America, and originally covered approximately 25% of the Brazilian territory. The savanna forms of cerrado are characterized by a ground layer of grasses, small palms, shrubs, and trees.
Heloisa Sinátora Miranda +3 more
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Legacy Phosphorus and No Tillage Agriculture in Tropical Oxisols of the Brazilian Savanna
Science of the Total Environment, 2016Crop production in the Brazilian Cerrado is limited by soil phosphorus (P) supply without large inputs of inorganic P fertilizer, which may become more costly and scarce in the future. Reducing dependency on fertilizer P requires a greater understanding of soil P supply in the highly weathered soils in this important agricultural region.
Paul J A Withers +2 more
exaly +3 more sources
Drosophilidae of the Brazilian Savanna, the forgotten ecosystem.
2005Uploaded by Plazi for TaxoDros. We do not have abstracts.
Cahaves, N.B., Tidon, R.
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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.
Osmar Abílio de Carvalho Jr. +4 more
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Aquatic ecotoxicity of ashes from Brazilian savanna wildfires
Environmental Science and Pollution Research, 2017In a global scenario of climate change, several studies have predicted an increase in fires in different parts of the world. With the occurrence of rains following the fires in the Brazilian savanna (Cerrado biome), the compounds present in ashes may enter aquatic environments and cause adverse effects to these ecosystems.
Darlan Q, Brito +3 more
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