Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, Brazil

Detalhes bibliográficos
Autor(a) principal: Gomes, Mauro
Data de Publicação: 2019
Outros Autores: Ruchkys, Úrsula de Azevedo, Ferreira, Rodrigo Lopes, Goulart, Fernando Figueiredo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/41448
Resumo: The aim of this article is to analyse the landscape fragmentation around ferruginous caves in the Iron Quadrangle (Minas Gerais, Brazil) and the conditions of environmental stability of the caves inserted in vegetal remnants under edge effects caused by anthropic activities. The methodology applied involved the implementation of three different landscape metrics to stablish the total area of patches, the area of the patches under edge effects (core area), and the distance from the nearest neighbour. The measurements were calculated considering classes of vegetal coverage (herbaceous, shrub, and arboreal vegetation) and then processed and combined by using map algebra to obtain the fragmentation degree, which was classified into three classes: high, moderate, and low. Results reveal that 62.88% of the vegetation coverage of the study area presents a low degree of fragmentation. Among the caves under edge effects, 15% obtained negative indices of environmental stability. Although most of the analysed caves are located in areas with a low degree of fragmentation, the proximity of anthropized areas and the risk they represent for the speleological heritage reinforce the need to create strategies focused on the conservation of the caves.
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spelling Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, BrazilFragmentación del paisaje alrededor de las cuevas ferruginosas del Cuadrilátero Ferrífero de Minas Gerais, BrasilA fragmentação da paisagem em torno das cavernas ferruginosas do Quadrilátero Ferrífero de Minas Gerais, BrasilFerruginous cavesIron geosystemsIron QuadrangleLandscape metricsSpeleological heritageCaverna ferruginosaGeossistemas ferruginososQuadrilátero FerríferoMétricas de paisagemPatrimônio espeleológicoThe aim of this article is to analyse the landscape fragmentation around ferruginous caves in the Iron Quadrangle (Minas Gerais, Brazil) and the conditions of environmental stability of the caves inserted in vegetal remnants under edge effects caused by anthropic activities. The methodology applied involved the implementation of three different landscape metrics to stablish the total area of patches, the area of the patches under edge effects (core area), and the distance from the nearest neighbour. The measurements were calculated considering classes of vegetal coverage (herbaceous, shrub, and arboreal vegetation) and then processed and combined by using map algebra to obtain the fragmentation degree, which was classified into three classes: high, moderate, and low. Results reveal that 62.88% of the vegetation coverage of the study area presents a low degree of fragmentation. Among the caves under edge effects, 15% obtained negative indices of environmental stability. Although most of the analysed caves are located in areas with a low degree of fragmentation, the proximity of anthropized areas and the risk they represent for the speleological heritage reinforce the need to create strategies focused on the conservation of the caves.O objetivo deste artigo é analisar a fragmentação da paisagem em torno das cavernas ferruginosas do Quadrilátero Ferrífero (Minas Gerais, Brasil), bem como as condições de estabilidade ambiental das cavernas localizadas em remanescentes vegetais sujeitos ao efeito de borda causado por atividades antrópicas. A metodologia aplicada envolveu a implementação de três diferentes métricas de paisagem para determinar a área total de manchas, a área das manchas sob os efeitos de borda (área core) e a distância do vizinho mais próximo. As medidas foram calculadas com base nas classes de cobertura vegetal (vegetação herbácea, arbustiva e arbórea) e posteriormente processadas e combinadas por meio de álgebra de mapas para obter o grau de fragmentação que foi classificado em três classes: alto, moderado e baixo. Os resultados mostraram que 62,88% da cobertura vegetal da área estudada apresenta um baixo grau de fragmentação. Entre as cavernas com efeito de borda, 15% apresentam índices negativos de estabilidade ambiental. Embora a maioria das cavernas analisadas estejam localizadas em áreas com baixo grau de fragmentação, a proximidade de áreas antrópicas e o risco que representa para o patrimônio espeleológico reconfirmam a necessidade de criar estratégias enfocadas na sua conservação.Facultad de Ciencias Humanas de la Universidad Nacional de Colombia2020-06-16T16:47:42Z2020-06-16T16:47:42Z2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfGOMES, M. et al. Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, Brazil. Cuadernos de Geografía: Revista Colombiana de Geografía, Bogotá, v. 28, n. 1, p. 89-101, ene./jun. 2019.http://repositorio.ufla.br/jspui/handle/1/41448Cuadernos de Geografía: Revista Colombiana de Geografíareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessGomes, MauroRuchkys, Úrsula de AzevedoFerreira, Rodrigo LopesGoulart, Fernando Figueiredoeng2020-06-16T16:49:11Zoai:localhost:1/41448Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-06-16T16:49:11Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, Brazil
Fragmentación del paisaje alrededor de las cuevas ferruginosas del Cuadrilátero Ferrífero de Minas Gerais, Brasil
A fragmentação da paisagem em torno das cavernas ferruginosas do Quadrilátero Ferrífero de Minas Gerais, Brasil
title Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, Brazil
spellingShingle Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, Brazil
Gomes, Mauro
Ferruginous caves
Iron geosystems
Iron Quadrangle
Landscape metrics
Speleological heritage
Caverna ferruginosa
Geossistemas ferruginosos
Quadrilátero Ferrífero
Métricas de paisagem
Patrimônio espeleológico
title_short Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, Brazil
title_full Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, Brazil
title_fullStr Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, Brazil
title_full_unstemmed Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, Brazil
title_sort Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, Brazil
author Gomes, Mauro
author_facet Gomes, Mauro
Ruchkys, Úrsula de Azevedo
Ferreira, Rodrigo Lopes
Goulart, Fernando Figueiredo
author_role author
author2 Ruchkys, Úrsula de Azevedo
Ferreira, Rodrigo Lopes
Goulart, Fernando Figueiredo
author2_role author
author
author
dc.contributor.author.fl_str_mv Gomes, Mauro
Ruchkys, Úrsula de Azevedo
Ferreira, Rodrigo Lopes
Goulart, Fernando Figueiredo
dc.subject.por.fl_str_mv Ferruginous caves
Iron geosystems
Iron Quadrangle
Landscape metrics
Speleological heritage
Caverna ferruginosa
Geossistemas ferruginosos
Quadrilátero Ferrífero
Métricas de paisagem
Patrimônio espeleológico
topic Ferruginous caves
Iron geosystems
Iron Quadrangle
Landscape metrics
Speleological heritage
Caverna ferruginosa
Geossistemas ferruginosos
Quadrilátero Ferrífero
Métricas de paisagem
Patrimônio espeleológico
description The aim of this article is to analyse the landscape fragmentation around ferruginous caves in the Iron Quadrangle (Minas Gerais, Brazil) and the conditions of environmental stability of the caves inserted in vegetal remnants under edge effects caused by anthropic activities. The methodology applied involved the implementation of three different landscape metrics to stablish the total area of patches, the area of the patches under edge effects (core area), and the distance from the nearest neighbour. The measurements were calculated considering classes of vegetal coverage (herbaceous, shrub, and arboreal vegetation) and then processed and combined by using map algebra to obtain the fragmentation degree, which was classified into three classes: high, moderate, and low. Results reveal that 62.88% of the vegetation coverage of the study area presents a low degree of fragmentation. Among the caves under edge effects, 15% obtained negative indices of environmental stability. Although most of the analysed caves are located in areas with a low degree of fragmentation, the proximity of anthropized areas and the risk they represent for the speleological heritage reinforce the need to create strategies focused on the conservation of the caves.
publishDate 2019
dc.date.none.fl_str_mv 2019
2020-06-16T16:47:42Z
2020-06-16T16:47:42Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv GOMES, M. et al. Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, Brazil. Cuadernos de Geografía: Revista Colombiana de Geografía, Bogotá, v. 28, n. 1, p. 89-101, ene./jun. 2019.
http://repositorio.ufla.br/jspui/handle/1/41448
identifier_str_mv GOMES, M. et al. Landscape Fragmentation around Ferruginous Caves of the Iron Quadrangle, Minas Gerais, Brazil. Cuadernos de Geografía: Revista Colombiana de Geografía, Bogotá, v. 28, n. 1, p. 89-101, ene./jun. 2019.
url http://repositorio.ufla.br/jspui/handle/1/41448
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Facultad de Ciencias Humanas de la Universidad Nacional de Colombia
publisher.none.fl_str_mv Facultad de Ciencias Humanas de la Universidad Nacional de Colombia
dc.source.none.fl_str_mv Cuadernos de Geografía: Revista Colombiana de Geografía
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_ 1807835141164236800

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