scholarly journals Análise metodológica de estudos referentes a eventos de movimentos de massa e erosão ocorridos na região Nordeste do Brasil / A methodological analysis of studies regarding events of mass and erosion movements occurring in the northeast region of Brazil

2018 ◽  
Vol 28 (55) ◽  
pp. 959-979
Author(s):  
Caio Lima Dos Santos ◽  
Fabrízio De Luiz Rosito Listo ◽  
Osvaldo Girão Da Silva ◽  
Rafael Brito Dos Reis
Keyword(s):  
Mass Movement ◽  
Integrated System ◽  
Northeastern Brazil ◽  
Mass Movements ◽  
Surface Dynamics ◽  
Natural Conditions ◽  
Analytical Methodology ◽  
Northeast Region ◽  
Erosion Processes ◽  
Brazilian Northeast

A presente pesquisa tem por objetivo descrever e contabilizar os casos oficiais reconhecidos pelo sistema integrado de informações sobre desastres e pelo Atlas Brasileiro de desastres naturais referente a ocorrências de eventos de movimento de massa e de erosão ocorridos na região Nordeste do Brasil, bem como analisar os principais métodos utilizados para avaliação destes fenômenos (técnicas de campo, laboratório e geoprocessamento). Conforme a análise dos dados, foi verificado que os estados de Pernambuco e da Bahia apresentaram o maior número de ocorrências destes processos na região Nordeste, estando esse fato relacionado as condições físicas-naturais e as formas de uso da terra. Em termos metodológicos, é predominante no nordeste brasileiro a utilização de metodologias analíticas com a finalidade de identificação de áreas de risco de deslizamentos, considerando-se os condicionantes naturais e antrópicos.Palavras–chave: Dinâmicas Superficiais, movimentos de massa, processos erosivos, Nordeste do Brasil.Abstract The present research aims to describe and account for official cases recognized by the integrated system of information on disasters and the Brazilian atlas of natural disasters related to events of mass movement and erosion occurred in the Northeast region of Brazil, as well as to analyze the main methods used for the evaluation of these phenomena (field techniques, laboratory and geoprocessing). According to the analysis of the data, it was verified that the states of Pernambuco and Bahia present the largest number of mass movement and erosion occurrences in the Northeast, being this fact related to the physical-natural conditions and the forms of surface occupation. In methodological terms, it is verified that in the Brazilian Northeast the analytical methodology is widely used in order to identify areas of risk of landslides, taking into account the natural and anthropogenic conditions.Keywords: Surface dynamics, mass movements, erosion processes, northeastern Brazil. 

scholarly journals Liverworts of Alagoas State, Brazil

2008 ◽  
Vol 22 (3) ◽  
pp. 878-890 ◽  
Author(s):  
Lisi Dámaris Pereira Alvarenga ◽  
Juliana Rosa do Pará Marques de Oliveira ◽  
Mércia Patrícia Pereira Silva ◽  
Sarah Oliveira da Costa ◽  
Kátia Cavalcanti Pôrto
Keyword(s):  
Geographic Distribution ◽  
Protected Area ◽  
The State ◽  
Northeastern Brazil ◽  
Northeast Region ◽  
Brazilian Northeast ◽  
New Occurrences

A list of liverworts from Alagoas State was compiled and is presented here. The list is based on catalogues and previous papers as well as the results of an unpublished survey carried out at the Murici Ecological Station (EsEc), an important protected area of the Brazilian Northeast (9º11'05" - 9º16'48"S; 35º45'20" - 35º55'12"W). One-hundred and sixteen liverworts have been recorded for the state of Alagoas, of which 106 occur at EsEc Murici. Seventy-eight are new occurrences for Alagoas, and seven of these are also new occurrences for northeastern Brazil. Data on geographic distribution in Brazil and worldwide is given here, in addition to ecological and taxonomic comments on the species that are new occurrences for the Northeast region.

scholarly journals First record of Epicadus trituberculatus (Taczanowski, 1872) (Araneae, Thomisidae, Stephanopinae) in the Brazilian Northeast

Check List ◽  
2019 ◽  
Vol 15 (5) ◽  
pp. 937-940
Author(s):  
Jober Fernando Sobczak ◽  
German Antonio Villanueva-Bonilla ◽  
Antonia Maia Larissa da Silva ◽  
Jullyana Cristina Magalhães Silva Moura Sobczak ◽  
Miguel Machado
Keyword(s):  
Tropical Forest ◽  
Atlantic Forest ◽  
New Record ◽  
First Record ◽  
Wide Distribution ◽  
Distribution Range ◽  
Northeastern Brazil ◽  
Northeast Region ◽  
Brazilian Northeast ◽  
Wide Distribution Range

We present the first record of Epicadus trituberculatus (Taczanowski, 1872) from the Northeast Region of Brazil. The new record is based on six specimens observed in two areas of montane semi-deciduous tropical forest located in two municipalities: Guaramiranga and Pacatuba, Ceará state, Brazil. Of the six specimens observed we collected manually only three to preserve as voucher material. In Brazil, E. trituberculatus has a wide distribution range, which extends from the Atlantic Forest, Amazon, and Cerrado biomes and the Pampa ecoregion. With the new record there are currently six known species of Epicadus in northeastern Brazil.

scholarly journals Epidemiological survey for goat leptospirosis in two distinct biomes in Northeastern Brazil

2021 ◽  
Vol 10 (2) ◽  
pp. e5610212242
Author(s):  
Maira Porto Viana ◽  
José Dêvede da Silva ◽  
Ana Milena César Lima ◽  
Francisco Selmo Fernandes Alves ◽  
Raymundo Rizaldo Pinheiro ◽  
...  
Keyword(s):  
Epidemiological Survey ◽  
Agglutination Test ◽  
The State ◽  
Northeastern Brazil ◽  
Northeast Region ◽  
Factors Associated ◽  
Geographic Data ◽  
Reproductive Disease ◽  
Brazilian Northeast ◽  
Vegetation And Climate

Caprine breeding is a largely exploited activity in Brazil, with a herd of over 10 million goats concentrated mostly in the Northeast region, which contains 93.9% of the national herd. However, this region is affected by huge losses due to inappropriate management and illness occurrence, such as leptospirosis, a reproductive disease that causes economic and productive losses. Considering these previous statements, we aimed to determine the most frequent seroprevalence, serogroups and factors associated with the occurrence of leptospirosis in goats from different states and biomes of the Brazilian northeast and properly locate the disease throughout the region through the analysis of epidemiological questionnaires and geographic data. The samples were submitted to the Microscopic Agglutination Test (MAT) with a cutoff of 50. In addition, geographic data were analysed to create maps with epidemiological descriptions of the disease in the states. The total occurrence of seropositive animals was 19.93% (119/597), 18.92% (35/185) in the state of Alagoas and 20.38% (84/412) in Maranhão. The most common serogroups in these states were Autumnalis (31.09%) and Icterohaemorrhagiae (23.81%). Dividing the results, it was possible to observe a greater occurrence of the serogroup Autumnalis (42.86%) Icterohaemorrhagiae (28.57%) in the state of Alagoas, Caatinga biome, plus Autumnalis (26.19%) and Icterohaemorrhagiae (23.81%) in the state of Maranhão, Cerrado biome. It was proven that Leptospira sp. is present in both states and biomes analyzed, present in diverse areas as in vegetation and climate, warning preventive care towards the disease.

Demographic, clinical, and ancestry characterization of a large cluster of mucopolysaccharidosis IV A in the Brazilian Northeast region

2021 ◽  
Author(s):  
Simone Silva Santos‐Lopes ◽  
Jessica Maria Florêncio Oliveira ◽  
Denise Queiroga Nascimento ◽  
Yorran Hardman Araújo Montenegro ◽  
Sandra Leistner‐Segal ◽  
...  
Keyword(s):  
Large Cluster ◽  
Northeast Region ◽  
Brazilian Northeast

scholarly journals Performance of Children in Phonemic and Semantic Verbal Fluency Tasks

Psico-USF ◽  
2016 ◽  
Vol 21 (2) ◽  
pp. 293-304 ◽  
Author(s):  
Gilmara de Lucena Leite ◽  
Izabel Augusta Hazin Pires ◽  
Laura Carolina Lemos Aragão ◽  
Artemis Paiva de Paula ◽  
Ediana Rossely de Oliveira Gomes ◽  
...  
Keyword(s):  
Explicit Memory ◽  
Verbal Fluency ◽  
Age Groups ◽  
Memory Systems ◽  
Semantic Fluency ◽  
Age And Gender ◽  
Northeast Region ◽  
Semantic Verbal Fluency ◽  
And Gender ◽  
Brazilian Northeast

Abstract This study investigated the performance of children from the Brazilian Northeast region, from 7 to 10 years in phonemic and semantic verbal fluency tasks. The participants were 102 subjects (62 girls and 40 boys) who performed three phonemic and three semantic fluency tasks. The results were submitted to correlational and variance analysis to investigate the influence of the variables age and gender on the subjects performance. There was no effect of gender on the results. Significant contrasts between age groups were found, and better performance was observed on phonemic tasks. Also, the performance in this task changed along development, in contrast to what happened with the semantic fluency. The findings seem to be in accordance to neurodevelopmental aspects, taken into account that explicit memory systems show more precocious maturational course, with earlier consolidation, in comparison to the executive functions and frontal lobes, which go on developing until adult ages.

Evaluation of bioactive compounds potential and antioxidant activity of brown, green and red propolis from Brazilian northeast region

2017 ◽  
Vol 101 ◽  
pp. 129-138 ◽  
Author(s):  
Julianna Karla Santana Andrade ◽  
Marina Denadai ◽  
Christean Santos de Oliveira ◽  
Maria Lucia Nunes ◽  
Narendra Narain
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Northeast Region ◽  
Brazilian Northeast

scholarly journals Nutrient digestibility in horses of tropical grasses found in semi-arid areas of the Brazilian Northeast region assessed using mobile bags

2021 ◽  
Vol 50 ◽  
Author(s):  
Alisson Herculano da Silva ◽  
Jorge Eduardo Cavalcante Lucena ◽  
Juliano Martins Santiago ◽  
Daniel Anderson de Souza Melo ◽  
Djanira Paula Soares de Souza Silva ◽  
...  
Keyword(s):  
Nutrient Digestibility ◽  
Arid Areas ◽  
Tropical Grasses ◽  
Northeast Region ◽  
Brazilian Northeast ◽  
Semi Arid

scholarly journals First records of Buff-fronted Owl, Aegolius harrisii (Cassin, 1849) (Aves, Strigiformes), from the state of Maranhão, northeastern Brazil, and the northernmost record for the Cerrado domain

Check List ◽  
2021 ◽  
Vol 17 (2) ◽  
pp. 353-358
Author(s):  
Anderson Felipe Teixeira da Silva ◽  
Hilda Raianne Silva de Melo ◽  
Flávio Kulaif Ubaid
Keyword(s):  
First Record ◽  
The State ◽  
Northeastern Brazil ◽  
The West ◽  
Brazilian Northeast

We present the first record of Aegolius harrisii (Cassin, 1849) from the state of Maranhão, extending the known distribution of the species 283 km to the west in the Brazilian Northeast. This record also represents the northernmost locality of the species within the Cerrado phytogeographic domain, which coincides with the ecotone between the Cerrado, Caatinga, and Amazon domains. Given the considerable gaps in the data on the occurrence of this owl in the Brazilian Northeast, we would recommend more surveys in specific areas with similar phytophysiognomies.

scholarly journals Inferência Exploratória de Dados Espaço-Temporal da Precipitação Pluviométrica no Nordeste Brasileiro

2020 ◽  
Vol 13 (5) ◽  
pp. 2019
Author(s):  
Jhon Lennon Bezerra da Silva ◽  
Geber Barbosa De Albuquerque Moura ◽  
Marcos Vinícios Da Silva ◽  
Roni Valter De Souza Guedes ◽  
Pabrício Marcos Oliveira Lopes ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Multivariate Analysis ◽  
Temporal Variability ◽  
Principal Component ◽  
Component Analysis ◽  
Northeastern Brazil ◽  
Annual Rainfall ◽  
Intermittent Rivers ◽  
Rainfall Patterns ◽  
Brazilian Northeast

A gestão eficiente dos recursos hídricos no Nordeste brasileiro torna-se fundamental diante do regime hidrológico dos rios intermitentes, dos quais muitos são extremamente críticos. Todavia estes dependem de um regime pluviométrico irregular, tanto em escala de tempo mensal quanto anual. Objetivou-se determinar a variabilidade espaço-temporal da precipitação pluviométrica total anual, averiguando-se, também, as regiões com padrões de precipitação semelhantes por técnicas de análise multivariada (clusters e componentes principais) no Nordeste do Brasil. Foram analisados dados de precipitação pluviométrica total anual, entre os anos de 1995 e 2016, de 37 diferentes estações meteorológicas do INMET, estas situadas nos limites territoriais dos nove estados do Nordeste brasileiro. A análise de clusters verificou a formação de quatro grupos distintos, com padrões semelhantes de precipitação nas regiões dentro dos grupos, conforme também observado na análise de componentes principais. A padronização e/ou variabilidade espaço-temporal da precipitação pluviométrica dos municípios analisados mostrou-se está intimamente associada as condições das estações do ano e anomalias climatológicas, aos fatores de uso e ocupação do solo, condições de altitude e relevo, tais quais favorecem na formação e estabilidade de chuvas menores ou maiores no Nordeste brasileiro. A análise multivariada de cluster e componentes principal identificaram padrões e semelhanças pluviométricas de grupos, nos diferentes estados do Nordeste do Brasil entre os anos de 1995 e 2016. Exploratory Inference of Spatial-Temporal Data of Rainfall in the Brazilian Northeast ABSTRACTThe efficient management of water resources in the Northeast of Brazil is essential in view of the hydrological regime of intermittent rivers, of which many are extremely critical, as they depend on an irregular rainfall regime, both on a monthly and annual time scale. The objective of this study was to determine the spatial and temporal variability of the annual total rainfall, also investigating the regions with similar rainfall patterns by multivariate analysis techniques (clusters and principal components) in Brazilian Northeast. Data from total annual rainfall between the years 1995 and 2016, of 37 different INMET weather stations were analyzed, located within the territorial limit of the nine states of Brazilian Northeast. Cluster analysis verified the formation of four distinct groups, with similar precipitation patterns in the regions within the groups as also observed in the principal component analysis. The pattern and/or spatial-temporal variability of rainfall in the municipalities analyzed was shown to be intimately associated with the conditions of the year and climatic anomalies stations, and the factors of land use and occupation, altitude and relief conditions, such as favoring the formation and stability of minor or major rain in the Brazilian Northeast. Multivariate cluster and principal component analysis identified rainfall patterns and similarities of groups, in the different states of Northeastern Brazil between the years 1995 and 2016.Keywords: multivariate analysis, climate change, semiarid, regional climate patterns.

scholarly journals Identificação de Cicatrizes de Movimentos de Massa na Borda Oriental da Bacia do Paraná com base em Imagens Landsat 5-TM (Identification of Landslides Scars in the Eastern Edge of the Paraná Basin)

2015 ◽  
Vol 8 (1) ◽  
pp. 056
Author(s):  
Mariana Madruga De Brito
Keyword(s):  
Image Processing ◽  
Mass Movement ◽  
Google Earth ◽  
Economic Losses ◽  
Mass Movements ◽  
Tm Image ◽  
Paraná Basin ◽  
Landsat 5 Tm ◽  
Parana Basin ◽  
Eastern Edge

Movimentos de massa são fenômenos naturais caracterizados pelo deslocamento de solo e rocha vertente abaixo. Quando esses processos ocorrem em áreas urbanizadas, podem causar perdas econômicas, impactos sociais e, em casos extremos, perda de vidas humanas. Na tentativa de mitigar tais desastres, torna-se necessário mapear os locais já afetados pelos mesmos, uma vez que escorregamentos recentes podem sugerir futuros padrões de instabilidade. Nesse sentido, este trabalho teve por objetivo mapear as cicatrizes de movimentos de massa em um segmento da Borda Oriental da Bacia do Paraná, por meio do processamento de uma imagem Landsat 5-TM, órbita/ponto 220/80, data de passagem 28/08/2009. Para facilitar a discriminação destas feições, elaboraram-se composições coloridas RGB e processamentos tais como Ampliação Linear de Contraste (ALC), razão entre bandas e Análise por Componentes Principais (PCA). A fim de validar o inventário elaborado, utilizaram-se imagens de alta resolução disponíveis no software Google Earth®. Ao total, foram identificadas 63 cicatrizes com a imagem Landsat 5-TM e 121 cicatrizes com as imagens do Google Earth®. Os principais tipos de movimentos de massa mapeados são escorregamentos translacionais rasos e corrida de detritos. A identificação das cicatrizes foi possível devido às diferenças de tonalidade, cor, matiz e textura nas imagens orbitais após a ocorrência desses processos. Os resultados obtidos representam um passo inicial para a análise da suscetibilidade da área.     A B S T R A C T Mass movements are natural phenomena characterized by the downslope movement of soil and rock. When these processes occur in urban areas they can cause economic losses, social impacts and, in extreme cases, loss of human lives. In an attempt to mitigate such disasters, it is necessary to map sites affected by them, since recent landslides may suggest future patterns of instability. In this sense, this study aimed to map the mass movement scars in a segment of the Eastern Edge of the Paraná Basin, through the processing of a Landsat 5-TM image, 220/80 orbit-point and date of passage 08/28/2009. To facilitate the recognition of these features, RGB color compositions and image processing techniques such as contrast stretching, ratio between bands and Principal Component Analysis (PCA) were applied. In order to validate the inventory, high-resolution images available at Google Earth® software were used. Totally, 63 scars were identified with the Landsat 5-TM image and 121 with Google Earth® images. The main types of mass movements mapped are translational landslides and debris flows. The identification of the scars was possible due to differences in tone, color, hue and texture at the orbital images after the occurrence of such processes. Results obtained represent an initial step towards the susceptibility analysis of the area. Keywords: Landslide inventory; Digital image processing; Satellite images; Geoprocessing.  

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