Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomies
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Tipo de documento: | Tese |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/29320 |
Resumo: | Mining activities modify the landscape and can generate environmental impacts on the soil, water and air, necessitating that these sites that have undergone the mining process be rehabilitated through revegetation processes. After rehabilitation, the areas should be evaluated for the degree of recovery or disturbance. Microbiological indicators are the most sensitive tools for these assessments. Therefore, the objective of this study was to evaluate soil microbiological indicators of an area rehabilitated after iron mining activities and to compare with adjacent non-disturbed phytophysiognomies. Soil samples were collected in the Canga (Ironstone Outcrops – IO), Cerrado (Neotropical Savanna – NS) and Atlantic Forest (AF) and an area rehabilitated after iron mining with grass (RA), in two climatic seasons (dry and rainy) in the Quadrilátero Ferrífero - MG - Brazil. The soil attributes evaluated were the microbiological, chemical and physical. The microbiological indicators differed according to the type of vegetation and the season of the year. AF was the phytophysiognomy that exhibited higher values of microbial biomass and of enzymatic activities. The IO and NS exhibited an active microbial biomass in the nutrient cycling processes evidenced by the enzymatic activities. RA showed a positive effect of revegetation by providing greater specific enzymatic activities by carbon of the microbial biomass and higher microbial coefficient, as well as the greater symbiotic efficiency of plant growth promoter rhizobacterial communities. Microbiological attributes, organic carbon, total nitrogen, Fe2+, Cu2+ and Al3+, pH, potential acidity, cation exchange capacity and sand and clay content were sensitive to indicate differences between phytophysiognomies. A total of 327 strains were isolated at both seasons. Genetic diversity was evaluated by partial sequencing the 16S rRNA gene, from which 29 genera were identified in the dry season and 18 in the rainy season. The genotypes Bradyrhizobium, Rhizobium and the endophytic Paenebacillus were the most frequent in both seasons and phytophysiognomies. The richness of genera found in the areas in the dry and rainy season were respectively 8 and 6 in IO, 6 and 8 in NS, 11 and 15 in AF, 15 and 7 in RA. The process of rehabilitation of areas after iron mining by revegetation with grass is being effective in soil recovery, evidenced by high specific enzymatic activities by microbial biomass and the symbiotic efficiency of the rhizobacteria community promoting plant growth in this soil. |
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Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomiesReabilitaçãoCangaSolos - CerradoMata AtlânticaQuadrilátero FerríferoEstações climáticasEcologia do soloMicroorganismos do soloSolos - PoluiçãoIndicadores ambientaisRehabilitationIronstone OutcropsSavanna soilsAtlantic ForestIron QuadrangleWeather stationsSoil ecologySoil microbiologySoil pollutionEnvironmental indicatorsCiência do SoloMining activities modify the landscape and can generate environmental impacts on the soil, water and air, necessitating that these sites that have undergone the mining process be rehabilitated through revegetation processes. After rehabilitation, the areas should be evaluated for the degree of recovery or disturbance. Microbiological indicators are the most sensitive tools for these assessments. Therefore, the objective of this study was to evaluate soil microbiological indicators of an area rehabilitated after iron mining activities and to compare with adjacent non-disturbed phytophysiognomies. Soil samples were collected in the Canga (Ironstone Outcrops – IO), Cerrado (Neotropical Savanna – NS) and Atlantic Forest (AF) and an area rehabilitated after iron mining with grass (RA), in two climatic seasons (dry and rainy) in the Quadrilátero Ferrífero - MG - Brazil. The soil attributes evaluated were the microbiological, chemical and physical. The microbiological indicators differed according to the type of vegetation and the season of the year. AF was the phytophysiognomy that exhibited higher values of microbial biomass and of enzymatic activities. The IO and NS exhibited an active microbial biomass in the nutrient cycling processes evidenced by the enzymatic activities. RA showed a positive effect of revegetation by providing greater specific enzymatic activities by carbon of the microbial biomass and higher microbial coefficient, as well as the greater symbiotic efficiency of plant growth promoter rhizobacterial communities. Microbiological attributes, organic carbon, total nitrogen, Fe2+, Cu2+ and Al3+, pH, potential acidity, cation exchange capacity and sand and clay content were sensitive to indicate differences between phytophysiognomies. A total of 327 strains were isolated at both seasons. Genetic diversity was evaluated by partial sequencing the 16S rRNA gene, from which 29 genera were identified in the dry season and 18 in the rainy season. The genotypes Bradyrhizobium, Rhizobium and the endophytic Paenebacillus were the most frequent in both seasons and phytophysiognomies. The richness of genera found in the areas in the dry and rainy season were respectively 8 and 6 in IO, 6 and 8 in NS, 11 and 15 in AF, 15 and 7 in RA. The process of rehabilitation of areas after iron mining by revegetation with grass is being effective in soil recovery, evidenced by high specific enzymatic activities by microbial biomass and the symbiotic efficiency of the rhizobacteria community promoting plant growth in this soil.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)As atividades de mineração modificam a paisagem e podem gerar impactos ambientais no solo, na água e no e ar, necessitando que esses locais que passaram pelo processo de mineração sejam reabilitados por meio de processos de revegetação. Após a reabilitação as áreas devem ser avaliadas quanto ao grau de recuperação ou perturbação. Indicadores microbiológicos são as ferramentas mais sensíveis para estas avaliações. Portanto, o objetivo deste estudo foi avaliar os indicadores microbiológicos do solo de uma área reabilitada após atividades de mineração de ferro e comparar com fitofisionomias adjacentes que não foram perturbadas. Amostras de solo foram coletadas em fitofisionomias de Canga (ironstone outcrops – IO) de Cerrado (neotropical savanna – NS) e de Mata Atlântica (Atlantic Forest – AF) e uma área em reabilitação após a mineração de ferro revegetada com capim (rehabilitated area with grass – RA), em duas estações climáticas (seca e chuvosa) no Quadrilátero Ferrífero – MG – Brasil. Os atributos do solo avaliados foram os microbiológicos, químicos e físicos dos solos. Os indicadores microbiológicos diferiram de acordo com o tipo de fitofisionomia e a estação do ano. AF foi a fitofisionomia que exibiu valores mais altos de biomassa microbiana e de atividades enzimáticas. A IO e NS exibiram uma biomassa microbiana ativa nos processos de ciclagem de nutrientes, evidenciada pelas atividades enzimáticas. RA evidenciou efeito positivo da revegetação ao proporcionar maiores atividades enzimáticas específicas por carbono da biomassa microbiana e maior coeficiente microbiano, assim como a maior eficiência simbiótica de comunidades de rizobactérias promotoras de crescimento vegetal. Os atributos microbiológicos, o carbono orgânico, os teores de N, Fe2+, Cu2+ e Al3+, o pH, a acidez potencial, a capacidade de troca de cátions e os conteúdos de areia e argila foram sensíveis em indicar diferenças entre as fitofisionomias. Foram isoladas 327 estirpes, nas duas estações climáticas. A diversidade genética foi avaliada por meio do sequenciamento parcial do gene 16S rRNA, a partir do qual foram identificados 29 gêneros na estação seca e 18 na estação chuvosa. Os gêneros nodulíferos Bradyrhizobium, Rhizobium e o endofítico Paenebacillus foram os de maior ocorrência em ambas as estações e fitofisionomias. A riqueza de gêneros encontradas nas áreas na estação seca e chuvosa foram respectivamente 8 e 6 em IO, 6 e 8 em NS, 11 e 15 em AF, 15 e 7 em RA. O processo de reabilitação de áreas após a mineração de ferro por revegetação com capim está sendo efetivo na recuperação do solo, evidenciado por elevadas atividades enzimáticas específicas por biomassa microbiana e pela eficiência simbiótica da comunidade de rizobactérias promotoras de crescimento vegetal em nesse solo.Universidade Federal de LavrasCiência do SoloUFLAbrasilDepartamento de Ciência do SoloMoreira, Fatima Maria de SouzaGuimarães , Amanda AzariasLongatti , Silvia Maria de OliveiraMedeiros , Érika Valente deKasuya , Maria Catarina MegumiNóbrega, Rafaela Simão AbrahãoSilva, Aline Oliveira2018-05-25T13:38:28Z2018-05-25T13:38:28Z2018-05-252018-04-27info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfSILVA, A. O. Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomies. 2018. 100 p. Tese (Doutorado em Ciência do Solo)–Universidade Federal de Lavras, Lavras, 2018.http://repositorio.ufla.br/jspui/handle/1/29320enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2018-05-25T13:38:29Zoai:localhost:1/29320Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2018-05-25T13:38:29Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomies |
title |
Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomies |
spellingShingle |
Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomies Silva, Aline Oliveira Reabilitação Canga Solos - Cerrado Mata Atlântica Quadrilátero Ferrífero Estações climáticas Ecologia do solo Microorganismos do solo Solos - Poluição Indicadores ambientais Rehabilitation Ironstone Outcrops Savanna soils Atlantic Forest Iron Quadrangle Weather stations Soil ecology Soil microbiology Soil pollution Environmental indicators Ciência do Solo |
title_short |
Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomies |
title_full |
Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomies |
title_fullStr |
Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomies |
title_full_unstemmed |
Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomies |
title_sort |
Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomies |
author |
Silva, Aline Oliveira |
author_facet |
Silva, Aline Oliveira |
author_role |
author |
dc.contributor.none.fl_str_mv |
Moreira, Fatima Maria de Souza Guimarães , Amanda Azarias Longatti , Silvia Maria de Oliveira Medeiros , Érika Valente de Kasuya , Maria Catarina Megumi Nóbrega, Rafaela Simão Abrahão |
dc.contributor.author.fl_str_mv |
Silva, Aline Oliveira |
dc.subject.por.fl_str_mv |
Reabilitação Canga Solos - Cerrado Mata Atlântica Quadrilátero Ferrífero Estações climáticas Ecologia do solo Microorganismos do solo Solos - Poluição Indicadores ambientais Rehabilitation Ironstone Outcrops Savanna soils Atlantic Forest Iron Quadrangle Weather stations Soil ecology Soil microbiology Soil pollution Environmental indicators Ciência do Solo |
topic |
Reabilitação Canga Solos - Cerrado Mata Atlântica Quadrilátero Ferrífero Estações climáticas Ecologia do solo Microorganismos do solo Solos - Poluição Indicadores ambientais Rehabilitation Ironstone Outcrops Savanna soils Atlantic Forest Iron Quadrangle Weather stations Soil ecology Soil microbiology Soil pollution Environmental indicators Ciência do Solo |
description |
Mining activities modify the landscape and can generate environmental impacts on the soil, water and air, necessitating that these sites that have undergone the mining process be rehabilitated through revegetation processes. After rehabilitation, the areas should be evaluated for the degree of recovery or disturbance. Microbiological indicators are the most sensitive tools for these assessments. Therefore, the objective of this study was to evaluate soil microbiological indicators of an area rehabilitated after iron mining activities and to compare with adjacent non-disturbed phytophysiognomies. Soil samples were collected in the Canga (Ironstone Outcrops – IO), Cerrado (Neotropical Savanna – NS) and Atlantic Forest (AF) and an area rehabilitated after iron mining with grass (RA), in two climatic seasons (dry and rainy) in the Quadrilátero Ferrífero - MG - Brazil. The soil attributes evaluated were the microbiological, chemical and physical. The microbiological indicators differed according to the type of vegetation and the season of the year. AF was the phytophysiognomy that exhibited higher values of microbial biomass and of enzymatic activities. The IO and NS exhibited an active microbial biomass in the nutrient cycling processes evidenced by the enzymatic activities. RA showed a positive effect of revegetation by providing greater specific enzymatic activities by carbon of the microbial biomass and higher microbial coefficient, as well as the greater symbiotic efficiency of plant growth promoter rhizobacterial communities. Microbiological attributes, organic carbon, total nitrogen, Fe2+, Cu2+ and Al3+, pH, potential acidity, cation exchange capacity and sand and clay content were sensitive to indicate differences between phytophysiognomies. A total of 327 strains were isolated at both seasons. Genetic diversity was evaluated by partial sequencing the 16S rRNA gene, from which 29 genera were identified in the dry season and 18 in the rainy season. The genotypes Bradyrhizobium, Rhizobium and the endophytic Paenebacillus were the most frequent in both seasons and phytophysiognomies. The richness of genera found in the areas in the dry and rainy season were respectively 8 and 6 in IO, 6 and 8 in NS, 11 and 15 in AF, 15 and 7 in RA. The process of rehabilitation of areas after iron mining by revegetation with grass is being effective in soil recovery, evidenced by high specific enzymatic activities by microbial biomass and the symbiotic efficiency of the rhizobacteria community promoting plant growth in this soil. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-05-25T13:38:28Z 2018-05-25T13:38:28Z 2018-05-25 2018-04-27 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
SILVA, A. O. Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomies. 2018. 100 p. Tese (Doutorado em Ciência do Solo)–Universidade Federal de Lavras, Lavras, 2018. http://repositorio.ufla.br/jspui/handle/1/29320 |
identifier_str_mv |
SILVA, A. O. Soil quality indicators showed recovery of an iron mining area compared to adjacent phytophysiognomies. 2018. 100 p. Tese (Doutorado em Ciência do Solo)–Universidade Federal de Lavras, Lavras, 2018. |
url |
http://repositorio.ufla.br/jspui/handle/1/29320 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Lavras Ciência do Solo UFLA brasil Departamento de Ciência do Solo |
publisher.none.fl_str_mv |
Universidade Federal de Lavras Ciência do Solo UFLA brasil Departamento de Ciência do Solo |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
_version_ |
1784549958113820672 |