Results 111 to 120 of about 179 (142)

Soils Associated with Rupestrian Grasslands

2016
Rupestrian Grassland (RG) is a peculiar type of vegetation characterized by a combination of shrubs, herbs, grasses and geophytes, growing on nutrient-poor rocky outcrops on the highest parts of the Mountain Landscape in Brazil. A broad review of existing soil data from RG revealed a trend of very poor nutrient status, shallow profiles, acidity and ...
Carlos E. Schaefer, Hugo G. Cândido, Guilherme Resende Corrêa, Jaquelina A. Nunes, Daniel M. Arruda   +4 more
exaly   +2 more sources

Antagonistic Interactions in the Rupestrian Grasslands: New Insights and Perspectives

2016
Antagonistic interactions are main ecological forces in terrestrial communities and include several examples involving plants and animals. The studies performed in the rupestrian grasslands have mostly focused on patterns of herbivory and on the effects of plant quality and natural enemies on insect herbivore abundance and distribution. Herbivory rates
Servio Pontes Ribeiro, Frederico Neves, Tatiana Cornelissen   +2 more
exaly   +2 more sources

Rupestrian Grassland Vegetation, Diversity, and Origin

2016
Rupestrian grasslands (campos rupestres) are tropical landscapes consisting of a mosaic of herbaceous and shrubby physiognomies on quartzite or ironstone that occur in highlands , usually above 900 m. These landscapes encompass a high diversity of habitats , under different environmental conditions, such as on rock outcrops dominated by desiccation ...
Abel A. Conceição, Alessandro Rapini, Flávio F. do Carmo, Juliana C. Brito, Gabriela A. Silva, Sâmia P. S. Neves, Claudia M. Jacobi   +6 more
openaire   +1 more source

Fire in Rupestrian Grasslands: Plant Response and Management

2016
Plant communities and species composing rupestrian grassland complexes within Brazilian savannas show varied responses to fire, and display similarities with other fire-prone ecosystems. Shallow, nutrient-poor soils subjected to severe water stress favor grasslands which carry fire in a landscape punctuated or crossed by rocky outcrops, riverine ...
José Eugênio Côrtes Figueira, Katia Torres Ribeiro, Marilene Cardoso Ribeiro, Claudia Maria Jacobi, Helena França, Ana Carolina de Oliveira Neves, Abel Augusto Conceição, Fabiana Alves Mourão, Jumara Marques Souza, Carlos Abraham de Knegt Miranda   +9 more
openaire   +1 more source

Metabarcoding of Soil Fungal Communities in Rupestrian Grassland Areas Preserved and Degraded by Mining: Implications for Restoration

Microbial Ecology, 2023
Rupestrian grasslands are vegetation complexes of the Cerrado biome (Brazilian savanna), exhibiting simultaneously great biodiversity and important open-pit mining areas. There is a strong demand for the conservation of remaining areas and restoration of degraded.
Maurílio Assis Figueiredo, Thamar Holanda da Silva, Otávio Henrique Bezerra Pinto, Mariangela Garcia Praça Leite, Fábio Soares de Oliveira, Maria Cristina Teixeira Braga Messias, Luiz Henrique Rosa, Paulo Eduardo Aguiar Saraiva Câmara, Fabyano Alvares Cardoso Lopes, Alessandra Rodrigues Kozovits   +9 more
openaire   +2 more sources

Rupestrian Grassland: Past, Present and Future Distribution

2016
Despite the existing evidence about climate change in South America during the Pleistocene, ancient climate and vegetation data for the mountainous regions of eastern Brazil are still scarce. Thus, little is known about the possible changes that took place in the distribution of mountainous ecosystems, such as the rupestrian grasslands.
Newton P. U. Barbosa, G. Wilson Fernandes   +1 more
openaire   +1 more source

Reproductive biology and floral visitors of Collaea cipoensis (Fabaceae), an endemic shrub of the rupestrian grasslands

Flora: Morphology, Distribution, Functional Ecology of Plants, 2018
Abstract Plant interactions with flower visitors are essential to understand the reproductive biology, evolution and distribution of flowering plants. Morphological convergences of flower traits have allowed flowers to maximize their attraction to pollinator agents leading to the concept of pollination syndromes.
Gélvez-Zúñiga I, Alberto L Teixidó, G Wilson Fernandes   +2 more
exaly   +2 more sources

Afforestation in the Rupestrian Grasslands: The Augmenting Pressure of Eucalyptus

2016
For at least 30 years, the expansion of eucalyptus plantations in municipalities like Grao-Mogol and Itamarandiba, in Minas Gerais State, has been provoking considerable impacts on ecosystems and human communities in the rocky fields of the Espinhaco Mountain Range.
Rodrigo Pinheiro Ribas, Rogério Machado Caetano, Bernardo Machado Gontijo, João Henrique de Azevedo Xavier   +3 more
openaire   +1 more source

Mutualistic Interactions Among Free-Living Species in Rupestrian Grasslands

2016
Mutualisms such as animal pollination and seed dispersal, and protection of plants and insects by ants are ubiquitous in terrestrial ecosystems. Currently, mutualistic interactions among plants and animals are recognized for their paramount importance in biodiversity maintenance, especially in tropical ecosystems.
Patricia Morellato, Fernando Silveira, Fernanda Vieira da Costa   +2 more
exaly   +3 more sources

Geographic space, relief, and soils predict plant community patterns of Asteraceae in rupestrian grasslands, Brazil

Biotropica, 2019
AbstractWe investigated the effects of geographic distance and environmental heterogeneity on Asteraceae communities in the rupestrian grasslands of the Espinhaço Range, southeastern Brazil. Asteraceae species composition and relative abundance were sampled in 21–1 ha plots distributed across park conservation units, comprising an environmental ...
Suelma Ribeiro-Silva, Marcelo Medeiros, Washington Luis De Oliveira   +2 more
exaly   +2 more sources