Raquel Franco Cassino

Raquel Franco Cassino
Universidade Federal de Ouro Preto · Department of Geology

About

13
Publications
3,966
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101
Citations
Citations since 2017
8 Research Items
86 Citations
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2017201820192020202120222023051015202530
2017201820192020202120222023051015202530

Publications

Publications (13)
Article
Full-text available
The vegetation cover is the result of many biological and abiotic interactions. To identify the different factors that cause changes is crucial when defining future sustainable development and protection of natural resources. In the Brazilian semiarid region, the vegetation cover has been subjected to drastic deforestation and land use at centennia...
Article
The Pandeiros wetland is a high biodiversity ecosystem located within a semiarid region of the Cerrado biome, a neotropical savanna. This large wetland is of key importance for ecological and hydrological balance in central Brazil and for the conservation of the Cerrado fauna and flora. In this study, we present the first palaeoecological investiga...
Article
Fossil pollen assemblages are an important tool to reconstruct vegetation variability at centennial and millennial-scales. However, in the Cerrado biome of Brazil, the influence of the local vegetation, the heterogeneity of the landscape and the accuracy of pollen identification leads to a wide margin of error in interpretation. In this study, we p...
Article
This study is the first report of the fossil macroflora of the Paleolagoa Seca, an Upper Quaternary fossil locality of lacustrine origin in central Brazil. Here we present an analysis of well-preserved fossil leaves collected from an argillite level dated at ca. 43,000 cal yr BP and discuss the paleoclimatic implications of this record. We reconstr...
Article
Full-text available
Em um projeto realizado no Laboratório de Paleontologia e Micropaleontologia do Departamento de Geologia da Universidade Federal de Ouro Preto (Degeo/UFOP), alunos de graduação trabalharam na organização e ampliação de uma coleção didática de microfósseis, na elaboração de um catálogo e de uma apostila com exercícios e atividades práticas. Apresent...
Article
Full-text available
The main objective of the present study was to promote some adaptations to the standard methodology used in the analysis of Cladocera subfossils. The samples used in this study were collected at Lagoa dos Coutos, a temporary lake located on an outcrop with iron-rich duricrust in the Serra do Gandarela (Minas Gerais, Brazil). The sediment from this...
Article
The fossil pollen record from a Late Quaternary peat core collected in the São José palm swamp, in the northwest region of Minas Gerais state (Central Brazil), is interpreted using a dataset of modern pollen spectra as modern analogs. Principal component analysis and dissimilarity coefficients were used to compare fossil and modern samples, support...
Article
The Cerrado is one of the most biodiverse biomes of Brazil and contains a great diversity of fitophysionomies. Over the past millennia, the vegetation of the Cerrado has been modified and influenced greatly by the climate changes and other factors, shaping the diversity exhibited today. Palynological studies of Quaternary sediments of the Cerrado ’...
Article
Twenty four surface samples were collected for palynological analysis from different environments in the Cerrado biome, which extends over a vast area in Central Brazil. These samples were used to investigate the relationship between vegetation and pollen spectra in the Cerrado and, thereby, contribute to a more precise interpretation of fossil pol...
Chapter
Full-text available
O capítulo revisa as evidências palinológicas de quinze localidades no cerrado do Brasil: Lagoa do Caçó (MA), Carajás (PA), Lagoa da Confusão (TO), Veredas de Águas Emendadas (DF) e Cromínia (GO), Veredas Laçador e Urbano, Lago do Pires, Lagoa de Serra Negra, Lagoa Santa, Lagoa dos Olhos d’Água, Lagoa dos Mares, Lagoa Nova, Turfeiras de Salitre e P...

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Projects

Projects (2)
Project
The Brazilian Cerrados is the second largest biome of the Neotropics, covering about 2 million km2 of tropical South America. The vegetation of the Cerrados is classified as a moist savanna and comprises open savannas, savanna woodlands, grasslands and shrubby grasslands, dry forests and riverine forests. The wide range of latitudes 2° to 24°S across which this biome stretches entails significant climatic variability across the region, but the occurrence of a strong dry season during austral winter (usually spanning four to six months) is common to the whole biome. Our project aims to discuss how South American summer monsoon variability has affected the fire activity and vegetation of the brazilian Cerrados during the late Quaternary.
Project
How South American summer monsoon variability has affected the fire activity and the vegetation of Cerrados during the Late Quaternary?