scholarly journals Water Productivity Modeling by Remote Sensing in the Semiarid Region of Minas Gerais State, Brazil

2018 ◽  
Author(s):  
Antônio Heriberto de Castro Teixeira ◽  
Fúlvio R. Simão ◽  
Janice F. Leivas ◽  
Reinaldo L. Gomide ◽  
João B.R. da S. Reis ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Water Productivity ◽  
Minas Gerais ◽  
Semiarid Region ◽  
Minas Gerais State ◽  
Productivity Modeling

scholarly journals THE CENTER PIVOT IRRIGATION IN MINAS GERAIS STATE, BRAZIL, UNDER THE OPTICS OF GOOGLE EARTH

Irriga ◽  
2018 ◽  
Vol 22 (2) ◽  
pp. 249-258
Author(s):  
Eduardo Pinheiro De Freitas ◽  
Wagner Alves de Andrade
Keyword(s):  
Remote Sensing ◽  
Minas Gerais ◽  
Google Earth ◽  
The State ◽  
Spatial And Temporal Scales ◽  
Financial Difficulties ◽  
Temporal Discontinuity ◽  
Minas Gerais State ◽  
Center Pivot ◽  
E Mail

The center pivot irrigation in Minas Gerais state, Brazil, under the optics of Google Earth  EDUARDO PINHEIRO DE FREITAS1 AND WAGNER ALVES DE ANDRADE2 1 IFSP campus Barretos, Barretos – SP, Brazil. E-mail: [email protected] UCS, Caxias do Sul - RS, Brazil. E-mail: [email protected]  1 Abstract The Southeast region has the highest water demand and the largest irrigated area in Brazil, with emphasis on the central pivots in the state of Minas Gerais. However, the reliability of this information is poor, which limits its use to such management. As an alternative to obtain more consistent data, especially regarding central pivots, there is the use of remote sensing with satellite images to the mapping of irrigated areas in spatial and temporal scales, with some technical and financial difficulties as barriers. Google Earth solves part of these barriers, but the temporal discontinuity is a point to be evaluated. In this context, this work aimed to use Google Earth to visually identify areas irrigated by center pivot in Minas Gerais, from an overflight in the state at an altitude of the viewpoint of 4,000 meters, characterize and register them, which resulted in 4,607 areas totaling 295,059.76 ha, with the municipality of Paracatu presenting the largest number with 598 areas, and Unaí, the greatest extent, with 42,846.04 ha. Data available in the literature of 2010 indicated 4,432 areas occupying 303,368 ha with 570 areas in Paracatu and 44,258 ha in Unaí, confirming the functionality of the method. Keywords: GIS, water resources, remote sensing.  FREITAS, E. P. DE; ANDRADE, w. a. DE A irrigação por pivô central no estado de Minas Gerais, Brasil, sob a óptica do Google Earth  2 Resumo A região Sudeste tem a maior demanda de água no Brasil e a maior extensão irrigada, com destaque para os pivôs centrais no estado de Minas Gerais, contudo, a confiabilidade destas informações é precária e limitam seu uso para a referida gestão. Como opção à obtenção de dados mais consistentes, principalmente quanto aos pivôs centrais, tem-se a utilização do sensoriamento remoto com imagens de satélites para o mapeamento em escalas espacial e temporal, tendo como entraves algumas dificuldades técnicas e financeiras. O Google Earth soluciona parte destes entraves, tendo na descontinuidade temporal um dos pontos a ser avaliado. Neste contexto, o presente trabalho teve como objetivo utilizar o Google Earth para identificar visualmente áreas irrigadas por pivô central em Minas Gerais, a partir de um sobrevoo no estado a uma altitude do ponto de visão de 4000 metros, caracterizá-las e cadastrá-las, o que resultou em 4607 áreas que totalizaram 295059,76 ha, com o município de Paracatu apresentando o maior número, com 598 áreas, e Unaí a maior extensão, com 42846,04 ha. Dados disponíveis do ano de 2010 indicam 4432 áreas ocupando 303368 ha, com 570 áreas em Paracatu e 44258 ha em Unaí, ratificando a funcionalidade do método. Palavras-chave: SIG, recursos hídricos, sensoriamento remoto. 

The tadpole of Scinax camposseabrai (Bokermann) (Amphibia, Anura, Hylidae)

Zootaxa ◽  
2019 ◽  
Vol 4674 (3) ◽  
pp. 393-396
Author(s):  
GILVANA SANTOS BARRETO ◽  
MARIA LÚCIA DEL GRANDE ◽  
MARCELO FELGUEIRAS NAPOLI ◽  
ADRIAN ANTONIO GARDA ◽  
FLORA ACUÑA JUNCÁ
Keyword(s):  
Minas Gerais ◽  
The State ◽  
External Morphology ◽  
Valid Species ◽  
Semiarid Region ◽  
Larval Morphology ◽  
Brazilian Semiarid ◽  
Minas Gerais State ◽  
Large Genus ◽  
Taxonomic Changes

The treefrog Scinax camposseabrai (Bokermann) is endemic to the Brazilian semiarid region and known from the municipalities of Maracás, Igaporã and Curaçá, in the state of Bahia, and from the municipality of Matias Cardoso, northern Minas Gerais state, Brazil (Frost 2019). It was removed from the synonymy of Scinax x-signatus (Spix), recognized as a valid species, and placed in the S. ruber clade (sensu Faivovich et al. 2005) by Caramaschi & Cardoso (2006). Taxonomic changes proposed by Duellman et al. (2016) for the genus Scinax were discussed by Lourenço et al. (2016) and Faivovich et al. (2018), and we follow here their suggestion to consider Ololygon and Julianus (erected for the S. uruguayus group) as synonyms of Scinax. This large genus Scinax currently would include 123 species (Frost 2019), many of which have had their larval morphology formerly described. Here, we describe the external morphology of the previously unknown tadpoles of S. camposseabrai. 

Volume estimation in a Eucalyptus plantation using multi-source remote sensing and digital terrain data: a case study in Minas Gerais State, Brazil

2018 ◽  
Vol 40 (7) ◽  
pp. 2683-2702 ◽  
Author(s):  
Aliny Aparecida Dos Reis ◽  
Steven E. Franklin ◽  
José Marcio de Mello ◽  
Fausto Weimar Acerbi Junior
Keyword(s):  
Remote Sensing ◽  
Minas Gerais ◽  
Volume Estimation ◽  
Eucalyptus Plantation ◽  
Digital Terrain ◽  
Minas Gerais State

Income Distribution and Poverty in Minas Gerais State, Brazil

2001 ◽  
Author(s):  
Luiz Fernando Alves ◽  
Rosa Rosa Fontes
Keyword(s):  
Income Distribution ◽  
Minas Gerais ◽  
Minas Gerais State

scholarly journals Extreme rainfall and its impacts in the Brazilian Minas Gerais state in January 2020: Can we blame climate change?

2021 ◽  
Author(s):  
Ricardo Dalagnol ◽  
Carolina B. Gramcianinov ◽  
Natália Machado Crespo ◽  
Rafael Luiz ◽  
Julio Barboza Chiquetto ◽  
...  
Keyword(s):  
Climate Change ◽  
Extreme Rainfall ◽  
Minas Gerais ◽  
Minas Gerais State

scholarly journals Global Satellite-Based ET Products for the Local Level Irrigation Management: An Application of Irrigation Performance Assessment in the Sugarbelt of Swaziland

2019 ◽  
Vol 11 (6) ◽  
pp. 705 ◽  
Author(s):  
Poolad Karimi ◽  
Bhembe Bongani ◽  
Megan Blatchford ◽  
Charlotte de Fraiture
Keyword(s):  
Remote Sensing ◽  
Performance Assessment ◽  
Management Practices ◽  
Local Level ◽  
Water Productivity ◽  
Irrigation Management ◽  
Irrigation Performance ◽  
Crop Water ◽  
Management Regime ◽  
Crop Water Productivity

Remote sensing techniques have been shown, in several studies, to be an extremely effective tool for assessing the performance of irrigated areas at various scales and diverse climatic regions across the world. Open access, ready-made, global ET products were utilized in this first-ever-countrywide irrigation performance assessment study. The study aimed at identifying ‘bright spots’, the highest performing sugarcane growers, and ‘hot spots’, or low performing sugarcane growers. Four remote sensing-derived irrigation performance indicators were applied to over 302 sugarcane growers; equity, adequacy, reliability and crop water productivity. The growers were segmented according to: (i) land holding size or grower scale (ii) management regime, (iii) location of the irrigation schemes and (iv) irrigation method. Five growing seasons, from June 2005 to October 2009, were investigated. The results show while the equity of water distribution is high across all management regimes and locations, adequacy and reliability of water needs improvement in several locations. Given the fact that, in general, water supply was not constrained during the study period, the observed issues with adequacy and reliability of irrigation in some of the schemes were mostly due to poor scheme and farm level water management practices. Sugarcane crop water productivity showed the highest variation among all the indicators, with Estate managed schemes having the highest CWP at 1.57 kg/m3 and the individual growers recording the lowest CWP at 1.14 kg/m3, nearly 30% less. Similarly center pivot systems showed to have the highest CWP at 1.63 kg/m3, which was 30% higher than the CWP in furrow systems. This study showcases the applicability of publicly available global remote sensing products for assessing performance of the irrigated crops at the local level in several aspects.

Paleoenvironmental reconstruction of the headwaters of the preto river, Minas Gerais state, Brazil, through siliceous bioindicators

2021 ◽  
Vol 108 ◽  
pp. 103349
Author(s):  
David Oldack Barcelos Ferreira Machado ◽  
Karina Ferreira Chueng ◽  
Heloisa Helena Gomes Coe ◽  
Alexandre Christófaro Silva ◽  
Camila Rodrigues Costa
Keyword(s):  
Minas Gerais ◽  
Paleoenvironmental Reconstruction ◽  
Minas Gerais State

Iron ore mining promotes iron enrichment in sediments of the Gualaxo do Norte River basin, Minas Gerais State, Brazil

2013 ◽  
Vol 71 (9) ◽  
pp. 4177-4186 ◽  
Author(s):  
Aline Sueli de Lima Rodrigues ◽  
Guilherme Malafaia ◽  
Adivane Terezinha Costa ◽  
Hermínio Arias Nalini Júnior
Keyword(s):  
River Basin ◽  
Iron Ore ◽  
Minas Gerais ◽  
Iron Enrichment ◽  
Minas Gerais State
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