scholarly journals Soil catenas in a pilot sub-basin in the region of Itajubá, Minas Gerais state, Brazil, for environmental planning

2021 ◽  
Vol 42 (3Supl1) ◽  
pp. 1511-1528
Author(s):  
Olívia de Lima ◽  
◽  
Eliane Guimarães Pereira Melloni ◽  
Rogério Melloni ◽  
Marcelo Ribeiro Barison ◽  
...  

Systemic studies that allow the environmental characterization of pilot sub-basins are essential to guide their management, which are the basis for adequate environmental planning. The José Pereira sub-basin has an area of approximately 40 km² and is located in the municipality of Itajubá, south of the state of Minas Gerais, Brazil. This area was chosen as a pilot sub-basin for this study because it holds an important forest remnant, the Serra dos Toledos Biological Reserve, and part of the urban area of the municipality in the process of expansion, as well as a rural area where inappropriate and intensive agricultural activities are practiced. In this scenario, this atudy examined the soil catenas of this sub-basin to serve as an important instrument of planning for this unit. Eight soil catenas distributed into three topo-morphological compartments were studied. According to the generated soil map, Haplic Cambisols occupy 26% of the sub-basin, in mountainous relief; Red and Red-Yellow Latosols, 6% of the area, predominating in the flat-to-undulating relief; Haplic Gleysols, 7% of the area, in the lowlands, in flat relief and at the footslope. Finally, Red and Red-Yellow Argisols were the predominant classes, occurring in almost 50% of the sub-basin, under undulating and strongly undulating reliefs. Based on the combined results, a model of local evolution of the sub-basin soils was proposed: the younger soils, Haplic Cambisol and Haplic Gleysol, occupy the positions of convex top and floodplain, respectively. In the upper and lower thirds of the landscape, the predominance of Red Argisol is related to constant renewal of soil material, preventing it from reaching the latosolic stage. In addition, part of these Argisols has a Bw horizon below Bt horizon in rugged relief. Moreover, in the landscape lower third, Latosols are present, even in areas with steep slope.

2010 ◽  
Vol 102 (3-4) ◽  
pp. 417-428 ◽  
Author(s):  
Luiz G. de Carvalho ◽  
Marcelo de Carvalho Alves ◽  
Marcelo S. de Oliveira ◽  
Rubens L. Vianello ◽  
Gilberto C. Sediyama ◽  
...  

Hoehnea ◽  
2020 ◽  
Vol 47 ◽  
Author(s):  
Libia Mayerly Cifuentes-García ◽  
Pedro Bond Schwartsburd ◽  
Denilson Fernandes Peralta

ABSTRACT The objective was to present the floristic survey of the bryophytes of the Parque Estadual da Serra do Brigadeiro. It included an evaluation of the species richness, as well as information about the substrate preference of each species and its geographic distributions in Brazil. We found 208 taxa of bryophytes: one hornwort, 88 liverworts and 119 mosses. This richness represents ca. 26% of the bryoflora of Minas Gerais State and ca. 13% of that known for Brazil. Eighteen of the bryophytes species are endemic to Brazil, whereas 19 species are recorded for the first time in Minas Gerais. The bryoflora showed preference for tree bark (30%) and rock (23%) as substrates. Our data show that the Parque Estadual da Serra do Brigadeiro is an important area for the diversity conservation of Brazilian bryophytes and maintenance of endemic species of the country.


2011 ◽  
Vol 2 (1) ◽  
pp. 27-35 ◽  
Author(s):  
Thiago Mourão de Miranda ◽  
Luiz Cosme Cotta Malaquias ◽  
Patrícia Maria Fonseca Escalda ◽  
Katiuscia Cardoso Ramalho ◽  
Wendel Coura-Vital ◽  
...  

Sociobiology ◽  
2013 ◽  
Vol 60 (2) ◽  
Author(s):  
Gabriely Köerich Souza ◽  
Tiago Georg Pikart ◽  
Gabriel Castro Jacques ◽  
Ancidértion Antonio Castro ◽  
Marcos Magalhães De Souza ◽  
...  

Hoehnea ◽  
2018 ◽  
Vol 45 (1) ◽  
pp. 103-114 ◽  
Author(s):  
Higor Antonio-Domingues ◽  
Angela Maria da Silva Corrêa ◽  
Rubens Teixeira de Queiroz ◽  
Norma Aparecida Borges Bitar

ABSTRACT This paper presents a palinologycal study of 16 Fabaceae species (Bauhinia variegata (L.), Caesalpinia echinata Lam., C. pulcherrima (L.) Sw., Calliandra surinamensis Benth., Cassia grandis L. f., Delonix regia (Bojer ex Hook.) Raf., Inga vera Willd., I. laurina (Sw.) Willd., Mimosa caesalpiniifolia Benth., M. pudica L., Myroxylon peruiferum L. f., Platypodium elegans Vogel, Poincianella pluviosa (DC.) L.P. Queiroz, Senna multijuga (Rich.) H.S. Irwin & Barneby, S. polyphylla (Jacq.) H.S. Irwin & Barneby and Senna trachypus (Mart. ex Benth.) H.S. Irwin & Barneby), which occur in the Centro Universitário de Patos de Minas Campus I- UNIPAM, and in the urban area of the city. The results showed that Fabaceae is euripalinous, displaying small, medium, large and very large sized pollen grains, dispersed in monads, tetrads and polyads, 3-colporate, 3-colpate, 4-(5)-(6)-24-porate, and with psilate, rugulate, reticulate-rugulate, retipilate to striate-reticulate sexine.


Nativa ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 189
Author(s):  
Guilherme Barbosa Reis ◽  
Vitor De Oliveira Abreu ◽  
Micael De Souza Fraga ◽  
Tiago Tozi ◽  
Demetrius David da Silva

O presente trabalho buscou elaborar uma proposta de enquadramento dos corpos hídricos em classes de uso na bacia do rio Santo Antônio, Estado de Minas Gerais. A classificação varia de acordo com a qualidade da água em cinco classes (especial, 1, 2, 3 e 4). Os critérios utilizados para a elaboração do enquadramento foram: uso e a ocupação do solo, finalidades das outorgas, volumes outorgados, vazão mínima de referência e densidade populacional. Para cada critério foi atribuído um peso e o mapa de enquadramento foi gerado a partir da sobreposição dos mapas dos critérios adotados. Devido a limitações nas bases de dados, optou-se por propor o enquadramento apenas para os principais rios da bacia. Para definição das áreas prioritárias de intervenção, o Índice de Conformidade ao Enquadramento (ICE) foi calculado com base no enquadramento obtido para os trechos de rio. Como resultado, os rios Guanhães e Preto do Itambé foram enquadrados nas classes 1 e 2. O rio do Peixe foi classificado como classe 1 e os rios Santo Antônio e do Tanque foram classificados como classe 2. O trecho enquadrado na classe 1 do rio Guanhães apresentou a menor média do ICE, sendo considerada área prioritária de intervenção.Palavras-chave: geoprocessamento, planejamento ambiental, recursos hídricos. PROPOSAL OF FRAMING THE WATER BODIES IN CLASSES OF USAGE IN THE SANTO ANTÔNIORIVER WATERSHED, MINAS GERAIS STATE, BRAZIL ABSTRACT: The present work aims to elaborate a proposal of framing the water bodies in classes of usage in the Santo Antônio river basin, located in the state of Minas Gerais. Classification varies according to water quality in five classes (special, 1, 2, 3 and 4). The criteria used to elaborate the proposal were the usage and occupation of the soil, purposes of the grants, volumes granted, minimum reference flow and population density. For each criterion a weight was attributed, and the framing map was generated from the overlay of the adopted criteria maps. Due to limitations in the databases, it was decided to put foward the framework for the main rivers of the basin. Framing Conformity Index (FCI) was also calculated in order to define priority areas for intervention purposes. As a result, Guanhães and Preto do Itambé rivers were classified in classes 1 and 2. The Peixe river was classified as class 1 and the Santo Antônio and Tanque rivers were classified as class 2. The section classified in class 1 of the Guanhães river was the one that presented lower FCI, therefore intervention measures are necessary.Keywords: environmental planning, geoprocessing, water resources.


Author(s):  
Marlene Cabrine-Santos ◽  
Renata Gregório Franco Moura ◽  
André Luiz Pedrosa ◽  
Dalmo Correia ◽  
Márcia Benedita de Oliveira-Silva

2013 ◽  
Author(s):  
Fabiana Fabri ◽  
Augusto Auler ◽  
Allan Calux ◽  
Roberto Cassimiro ◽  
Cristina Helena Ribeiro Rocha Augustin

O presente trabalho apresenta os resultados da caracterização geoespelológica das Grutas Baixada das Crioulas I e II, bem comoos principais aspectos espeleogenéticos associada a este sistema cárstico desenvolvido em rochas quatzíticas. Há, ainda hoje, grandecontrovérsia em torno da denominação de formas de relevo em rochas não carbonáticas, que apresentam similitudes com aquelasdesenvolvidas em relevo cárstico. Entre essas formas, destacam-se aquelas desenvolvidas em rochas quartzíticas Onze cavernasdesenvolvidas em rochas desta litologia em um conjunto montanhoso situado no município de Itambé do Mato Dentro, borda leste daSerra do Espinhaço Meridional (MG), foram localizadas e analisadas. Elas foram estudadas com o objetivo principal de compreender osprocessos de formação inerentes a essas feições. As cavernas Gruta Baixada das Crioulas I e Gruta Baixada das Crioulas II formam uminteressante sistema cárstico na região, com importantes atributos morfológicos, litológicos, estruturais e de depósitos endorcársticos. AGruta Baixada das Crioulas I destaca-se por seus atributos morfométricos, pois a caverna supera os 1000m de desenvolvimento horizontale 75m de desnível,medidas estas bastante representativas em se tratando de cavernas desenvolvidas em rochas quartzíticas,tanto emMinas Gerais, quanto no Brasil.Palavras-chave: geoespeleologia, sistema cárstico, quartzito, Serra do Espinhaço. ABSTRACTGEOSPELEOLOGY AND MAIN SPELEOGENETIC ASPECTS OF BAIXADA DAS CRIOULAS I AND II CAVES, ITAMBÉ DO MATO DENTRO,MINAS GERAIS. This research presents the results of the geospeleological characterization of the caves Gruta Baixada das Crioulas I and II,as well as the main speleogenetic aspects associated to this karst system developed in quartzite rocks. There are still controversies aboutthe denomination of features developed in non-carbonate rocks that present similarities with those developed in karstic relief. Amongthese features, those developed in quartzite rocks can be highlighted. Eleven caves formed in quartzite rocks were found in a mountainouslocation in the municipality of Itambé do Mato Dentro, the eastern border of Serra do Espinhaço Meridional, Minas Gerais State. They werestudied with the objective to understand the inherent processes involved in their formation and development. The caves Gruta Baixada dasCrioulas I and Gruta Baixada das Crioulas II form a karst system with important morphological, lithological, structural and endokarstdeposits that are characteristic of karstic forms. That is the case of the Gruta Baixada das Crioulas I which is outstanding because of itsmorphometric attributes with a length of more than 1000m and a depth of approximately 75m. These measures are fairly representativewhen compared to other caves in quartzite located not only in Minas Gerais but also in Brazil.Keywords: geospeleology, karst system, quartzite, Serra do Espinhaço.


Zootaxa ◽  
2020 ◽  
Vol 4881 (2) ◽  
pp. 323-336
Author(s):  
CARLOS A. CORRÊA ◽  
LETIZIA J. MIGLIORE ◽  
LUAN GARBELINI ◽  
JOSÉ C. ZANUNCIO ◽  
SÉRVIO P. RIBEIRO

The Rio Doce State Park (“PERD”) is the largest Atlantic Forest remnant in Minas Gerais State, Brazil, with predominantly semi-deciduous forests. The longhorned beetles of the Cerambycinae subfamily (Coleoptera: Cerambycidae) are distributed worldwide, developing on healthy, stressed or recently dead trees. Faunistic surveys are necessary to understand about the Minas Gerais’ cerambycid fauna due to a lack of research, especially in the eastern region of the state. A list of species of the subfamily Cerambycinae (Coleoptera: Cerambycidae), collected in the PERD during the rainy season (September 2013- February 2014), is presented. The beetles were collected using a light trap and through their emergence from Anadenanthera colubrina (Vell.) Brenan (Fabaceae) logs. A total of 663 individuals of 33 species, 30 genera, and 15 tribes of the Cerambycinae subfamily were collected. The species Malacopterus tenellus (Fabricius, 1801) was registered for the first time in Minas Gerais State, while A. colubrina is a new host plant for 14 Cerambycinae species. The geographical distribution, number of host plants and materials examined are presented for each species collected. This is the first list of Cerambycidae species from the Rio Doce State Park.


Sign in / Sign up

Export Citation Format

Share Document