Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of the structural framework on peat bog distribution in the tropical highlands of Minas Gerais, Brazil

Full text
Author(s):
da Rocha Campos, Jose Ricardo ; Silva, Alexandre Christofaro ; Nanni, Marcos Rafael ; dos Santos, Marcilene ; Vidal-Torrado, Pablo
Total Authors: 5
Document type: Journal article
Source: CATENA; v. 156, p. 228-236, SEP 2017.
Web of Science Citations: 2
Abstract

Peat bogs are ecosystems characterized by high levels of organic matter (OM), which accumulates in environments of low biological activity. The peat bogs present in the tropical highlands of Serra do Espinhaco Meridional (SdEM), Brazil, are associated with hydromorphic environments formed under specific conditions and the strong influence of the quartzite basement, whereby a complex pattern of faults, fractures and folds has deeply affected the drainage network and geomorphological framework. This study investigated the influence of the structural framework on the distribution and morphology of these ecosystems within a hydrological and geomorphological context. The physical features of the landscape were analyzed using geological maps, a digital elevation model and by mapping the main geomorphological feature patterns obtained from geographic information systems (GIS). Ground Penetrating Radar transects were taken in representative areas, as the best strategy for detection of buried peat bogs, as well as to analyze bedrock configuration and infer its relationship with water flow. Four peat bog typologies were identified: ``entrenched bogs{''}, ``subsurface bogs{''}, ``structural bogs{''}, and ``hanging bogs{''}. The distribution and morphology of these typologies display a strong relationship either with alluvial sediments and floodplains or with structural/lithological features which caused water retention. (AU)

FAPESP's process: 11/21191-3 - Peatlands evolution model of Serra do Espinhaço Meridional in a pedological, geomorphologic and geochemical approach
Grantee:Jose Ricardo da Rocha Campos
Support Opportunities: Scholarships in Brazil - Doctorate