Erosivity Index and Characteristics of Erosive Rainfall from the Far Western Region of Santa Catarina, Brazil

2018 ◽  
Vol 144 (7) ◽  
pp. 04018049 ◽  
Author(s):  
Álvaro José Back ◽  
Janaina Veronezi Alberton ◽  
Cristiano Poleto
Author(s):  
Álvaro J. Back ◽  
Augusto C. Pola ◽  
Nilzo I. Ladwig ◽  
Hugo Schwalm

ABSTRACT Exploring the characteristics of erosive rain is an important aspect of studying erosive processes, and it allows researchers to create more natural and realistic hydrological simulations. The objective of this study was to analyse the characteristics of erosive rain and to determine the temporal distribution pattern of erosive rainfall in the Valley of Rio do Peixe in the state of Santa Catarina, Brazil. Daily pluviograms from the meteorological stations located in the cities Campos Novos, Videira, and Caçador in Santa Catarina from 1984 to 2014 were utilized for this study. By studying rainfall that is classified as erosive, the values of kinetic energy, maximum intensity in thirty minutes, and the value of EI30 erosivity index were determined. The rainfall was also classified according to the temporal distribution of rainfall in advanced, intermediate, and delayed patterns. Erosive rainfalls occur at a frequency of 53.3% advanced, 31.1% intermediate, and 15.6% delayed patterns. Erosive rainfall has an average precipitation amount of 25.5 mm, duration of 11.1 h, kinetic energy of 5.6 MJ ha-1, maximum intensity of 30 min of 17.7 mm h-1, and erosivity of 206.4 MJ mm ha-1 h-1. The highest frequency of erosive rainfall occurred in rainfalls lasting from 6 to 12 h (36.1%), followed by rainfalls lasting from 4 to 6 h (22.4%).


Author(s):  
Álvaro J. Back ◽  
Augusto C. Pola ◽  
Nilzo I. Ladwig ◽  
Hugo Schwalm

ABSTRACT This study aimed to determine the rainfall erosivity index in the Valley of Rio do Peixe, in the state of Santa Catarina, Brazil. The data series of three rain gauge stations in the cities of Campos Novos, Videira, and Caçador were used to determine the rainfall erosivity based on the EI30 index and to adjust the equations in order to estimate the EI30 value from the rainfall coefficient. On average, it was observed that erosive rains represents 81.4-88.5% of the annual precipitation. The adjusted equations can be used to estimate rainfall erosivity in locations with only rainfall data. The regional equation specified for the erosivity estimation is EI30 = 74.23 Rc0.8087. The R factor is 8,704.8; 7,340.8; and 6,387.1 MJ mm ha-1 h-1 year-1 for Campos Novos, Videira, and Caçador, respectively. In Campos Novos and Videira, the erosivity was classified as high, while in Caçador, it was classified as average.


2014 ◽  
Vol 38 (6) ◽  
pp. 1890-1905 ◽  
Author(s):  
Jefferson Schick ◽  
Ildegardis Bertol ◽  
Neroli Pedro Cogo ◽  
Antonio Paz González

The erosive capacity of rainfall can be expressed by an index and knowing it allows recommendation of soil management and conservation practices to reduce water erosion. The objective of this study was to calculate various indices of rainfall erosivity in Lages, Santa Catarina, Brazil, identify the best one, and discover its temporal distribution. The study was conducted at the Center of Agricultural and Veterinary Sciences, Lages, Santa Catarina, using daily rainfall charts from 1989 to 2012. Using the computer program Chuveros , 107 erosivity indices were obtained, which were based on maximum intensity in 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80, 90, 100, 110, 120, 135, 150, 165, 180, 210, and 240 min of duration and on the combination of these intensities with the kinetic energy obtained by the equations of Brown & Foster, Wagner & Massambani, and Wischmeier & Smith. The indices of the time period from 1993 to 2012 were correlated with the respective soil losses from the standard plot of the Universal Soil Loss Equation (USLE) in order to select the erosivity index for the region. Erosive rainfall accounted for 83 % of the mean annual total volume of 1,533 mm. The erosivity index (R factor) of rainfall recommended for Lages is the EI30, whose mean annual value is 5,033 MJ mm ha-1 h-1, and of this value, 66 % occurs from September to February. Mean annual erosivity has a return period estimated at two years with a 50 % probability of occurrence.


2020 ◽  
Vol 17 (1) ◽  
pp. 262-276
Author(s):  
Jéssica Luana Casagrande ◽  
Camila de Fátima Soares dos Santos

This article discusses the continuing education of teachers, with the school itself as a training space. The objective was to reflect on the conditions and assumptions that underlie this training and the vision of teachers and managers, considering the training practices that are developed. The research was made in a public school, located in a county in the Western region of Santa Catarina. Methodologically, a qualitative approach was made, including bibliographic analysis and application of questionnaires for teachers and managers. The analysis of this study enables to understand the importance of building news conditions for the achievement of this training, in order to assume a space that allows teachers to accomodate their needs and improve educational practices.


2013 ◽  
Vol 11 (2) ◽  
pp. 137
Author(s):  
Marinês Lazzari ◽  
Mariana De Almeida Dornelles ◽  
Dionéia Magda Everling ◽  
Paulo Santana Pacheco ◽  
Julio Viégas ◽  
...  

Identificar entre as diversas funções matemáticas citadas na literatura, a que melhor descreve a curva de lactaçãode vacas leiteiras oriundas de rebanhos do oeste de Santa Catarina. Utilizaram-se 1.284 controles leiteiros de129 vacas da raça Holandesa. Os parâmetros dos modelos foram estimados por meio de regressão não linearpelo procedimento NLIN (SAS System), utilizando-se o método de Gauss-Newton. Os critérios para a escolha domelhor modelo foram: o quadrado médio do resíduo (QMR); o desvio médio absoluto (DMA); o coeficiente dedeterminação (R2); o índice de melhor ajuste; a avaliação visual comparada entre as curvas estimada e observadae o gráfico de distribuição dos resíduos. O modelo de Wood (1967) foi o mais satisfatório para descrever a curvade lactação das vacas, apresentando R2 de 0,95, DMA de 0,56, QMR de 27,57, menor índice (4,86), menores amplitudesdos resíduos (entre 0,5 e -0,5 litros) e curva estimada mais condizente com a observada.


2021 ◽  
Vol 7 (1) ◽  
pp. 7233-7249
Author(s):  
Antonio Waldimir Leopoldino da Silva ◽  
Larissa Lopes Paz ◽  
Amanda Regina Cagliari ◽  
Hector Perão Bortese ◽  
Natan Juner Begnini ◽  
...  

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Marcelo Moreno ◽  
Ricardo Ludwig Schmitt ◽  
Maria Gabriela Lang ◽  
Vanessa Gheno

Cutaneous melanoma (CM) is responsible for 75% of deaths from malignant skin cancer. The incidence of CM in the southern region of Brazil, particularly in the western region of Santa Catarina, is possibly higher than estimated. In this study, the clinical and epidemiological profile of patients with CM treated in the western region of Santa Catarina was examined. A cross-sectional study was performed with patients diagnosed with CM from January 2002 to December 2009, from 78 counties of the western region of the state of Santa Catarina. Data were collected using a protocol adapted from the Brazilian Melanoma Group and 503 patients were evaluated. The incidence and prevalence of CM found in this region are much higher than those found elsewhere in the country. This fact is most likely due to the phenotypic characteristics of the population and the high incidence of UV radiation in this region due to its location in southern Brazil, as is the case in the countries of Oceania.


2022 ◽  
Author(s):  
Dayane A. Padilha ◽  
Vilmar Benetti-Filho ◽  
Renato Simoes Moreira ◽  
Tatiany Soratto Teixeira Soratto ◽  
Guilherme Augusto Maia ◽  
...  

COVID-19 has assumed significant and lasting proportions worldwide. Following initial cases in the Western mesoregion, the State of Santa Catarina (SC), southern Brazil, was heavily affected as a whole by the pandemic in early 2021. This study aimed to evaluate the dynamics of the SARS-CoV-2 virus spreading patterns in the SC state through March 2020 to April 2021 using genomic surveillance. During this period, 23 distinct variants, including two VOCs (Beta and Gamma) were identified, among which, the Gamma and related lineages were predominant in the second pandemic wave within SC. However, a regionalization of P.1-like-II in the Western region was observed, concomitant to the increase in cases, mortality, and case fatality rate (CFR) index. This is the first evidence of the regionalization of the SARS-CoV-2 transmission in the and highlight the importance of tracking variants, dispersion and their impact of SARS-CoV-2 on the public health system in Brazilian states.


2015 ◽  
Vol 21 (2) ◽  
pp. 99-103 ◽  
Author(s):  
Paulo André Medeiros de Oliveira ◽  
Alexandrina Gomes de Oliveira ◽  
Ana Cristina Tillmann ◽  
Camila da Cruz Ramos de Araujo ◽  
Cecília Bertuol ◽  
...  

INTRODUCTION: attention has been focused on investigating the prevalence of physical activity PA in different populations.OBJECTIVE: to analyze factors associated with the usual practice of PA in women from areas of Santa Catarina, Brazil.METHODS: the cross-sectional study enrolled a sample of 2750 women with a mean age of 32.97±10.9 years. PA was assessed by the International Physical Activity Questionnaire IPAQ. The sample was divided into six groups: Southern Region; Itajaí Valley; Northern Region; Western Region; Highlands Region and the Greater Florianópolis Region, SC, Brazil. Statistical analysis was descriptive and inferential.RESULTS: approximately 68.3% of women were considered sufficiently active active + very active, in particular the Greater Florianópolis Region, SC, Brazil. In the practice of moderate and moderate + vigorous activity, the women of Western Region presented the highest averages 65±64 min/d; 105±102 min/d, respectively, and those in the range of 20-32 years old showed 61% chance of being considered active compared with women in the range of 46-59 years old. As for the body mass index BMI, women with normal weight of the South Region and Itajaí Valley regions had 2.24 95% CI;1.15-4.35 and 1.76 95% CI; 1.14-2.73 times more chances to be active when compared to the overweight women.CONCLUSION: women in the regions of Santa Catarina were considered sufficiently active. Moderate + vigorous PA was the most prevalent in the six regions studied.


2019 ◽  
Vol 19 (4) ◽  
Author(s):  
Sandra Mara Sabedot Bordin ◽  
Marcelo Monteiro ◽  
Valéria Wesner Ferreira ◽  
Junir Antonio Lutinski ◽  
Everton Nei Lopes Rodrigues

Abstract: This study aimed to present a list of the species of frugivorous butterflies occurring in Atlantic Forests, in the Conservation Units: National Forest of Chapecó (FLONA), Ecological Station of Mata Preta (ESEC) and State Park of Araucárias (PAEAR) and adjacent forest fragments, located in the western region of the state of Santa Catarina. Three samplings were conducted between December 2017 and March 2018, totaling 24 days of collection in each sampling area. Van Someren-Rydon traps were used to capture frugivorous butterflies. There were 4,231 frugivorous butterflies belonging to four subfamilies, 12 tribes and 49 species. In all, 37 species of frugivorous butterflies were sampled in FLONA and 29 in adjacent forest fragments. In ESEC, 29 species and 33 in adjacent forest fragments. In PAEAR, 33 species and 28 in adjacent forest fragments. Of the total species registered, 15 species are new records for the state of Santa Catarina and 11 are new records for the western region of the state. The most abundant species for FLONA were: Manataria hercyna (Hübner, 1821) and Hermeuptychia sp. In ESEC, were Hermeuptychia sp. and Yphthimoides ordinaria (Freitas, Kaminski & Mielke, 2012). In PAEAR, greater abundance of Forsterinaria quantius (Godart, 1824) and Eryphanes reevesii (Doubleday, 1849) were verified. For the adjacent forest fragments to Conservation Units, there was a greater abundance of Hermeuptychia sp., Moneuptychia soter (Butler, 1877), Morpho epistrophus (Fabricius, 1796) e Forsterinaria quantius (Godart, 1824). Satyrinae presented higher richness (S = 34) and abundance (90.58%) in all areas sampled. The rarefaction and extrapolation curves for the Conservation Units and adjacent forest fragments showed a greater rise in the FLONA and PAEAR sampling units and their adjacent forest fragments. The estimated sampling coverage for Conservation Unit and forest fragments was above 97%. The richness calculated through the Jackknife 1 estimator, for the FLONA and PAEAR samplings, presented a value of 50.75 and 37.09, respectively. The fauna of frugivorous butterflies from this region, first investigated in areas of Conservation Units, showed to be expressive and well represented in the Atlantic Forest Biome, indicating its potential as a refuge for biodiversity.


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