Results 201 to 210 of about 5,502 (236)

Phenology and its relation to precipitation in the Brazilian savanna

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015
Vegetation 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, Laerte Guimarães Ferreira, Manuel Eduardo Ferreira   +2 more
openaire   +1 more source

The spectral changes of deforestation in the Brazilian tropical savanna

Environmental Monitoring and Assessment, 2014
The 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, Sano, Edson E., Meneses, Paulo R.   +2 more
openaire   +5 more sources

Fires in the cerrado, the Brazilian savanna

2009
The 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, Margarete Naomi Sato, Walter Nascimento Neto, Felipe Salvo Aires   +3 more
openaire   +1 more source

Spectral mixture analysis of ASTER image in Brazilian Savanna

IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2004
The 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., C. P. L. Bloise, Ana Paula Ferreira de Carvalho, Renato Fontes Guimarães, Eder de Souza Martins   +4 more
openaire   +1 more source

Drosophilidae of the Brazilian Savanna, the forgotten ecosystem.

2005
Uploaded by Plazi for TaxoDros. We do not have abstracts.
Cahaves, N.B., Tidon, R.
openaire   +1 more source

Aquatic ecotoxicity of ashes from Brazilian savanna wildfires

Environmental Science and Pollution Research, 2017
In 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, Carlos José S, Passos, Daphne H F, Muniz, Eduardo C, Oliveira-Filho   +3 more
openaire   +2 more sources

The anurofauna of a vanishing savanna: the case of the Brazilian Cerrado

Biodiversity and Conservation, 2017
The second largest biome in Brazil, the Cerrado has been transformed into a highly mechanized and intensive agricultural area, with little public opposition. The native anurofauna is rich in species number and endemisms, but has long been regarded as a generalist community originated from neighboring biomes.
Joana Ribeiro, Guarino R. Colli, Amadeu M. V. M. Soares   +2 more
openaire   +1 more source

Thermal comfort of sows in free-range system in Brazilian Savanna

Journal of Thermal Biology, 2020
The aim of this work was to evaluate the thermal comfort of sows in a free-range system in the Brazilian Savanna, based on behavior observation, availability of shading resources, meteorological and physiological variables. The sows were analyzed in the gestation sector at Água Limpa Farm from University of Brasília; the sows were housed in paddocks of
João Victor do Nascimento, Mós, Sheila Tavares, Nascimento, Luci Sayori, Murata, Vinicius Machado, Dos Santos, Antonio José Steidle, Neto, Evandro Menezes, de Oliveira, Áquila, da Silva Lisboa, Luana, de Freitas Silva   +7 more
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Expansion of gallery forests into central Brazilian savannas

Global Change Biology, 2008
AbstractUpland tropical forests have expanded and contracted in response to past climates, but it is not clear whether similar dynamics were exhibited by gallery (riparian) forests within savanna biomes. Because such forests generally have access to ample water, their extent may be buffered against changing climates.
LUCAS C. R. SILVA, LEONEL STERNBERG, MUNDAYATAN HARIDASAN, WILLIAM A. HOFFMANN, FERNANDO MIRALLES‐WILHELM, AUGUSTO C. FRANCO   +5 more
openaire   +1 more source

Fire Occurrence in the Brazilian Savanna Conservation Units and their Buffer Zones

IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, 2020
Fire dynamics in the Brazilian Savannas (Cerrado) is related to climatic conditions and management interventions by human activities. Thus, the fire occurrence in conservation units (UCs) may be different when compared with their buffer zones. Our results, obtained by burned area analysis, demonstrate that buffer zones have the most significant ...
Tânia Beatriz Hoffmann, Andeise Cerqueira Dutra, Yosio Edemir Shimabukuro, Egidio Arai, Henrique Luis Godinho Cassol, Cesare Di Girolamo Neto, Valdete Duarte   +6 more
openaire   +1 more source