Results 141 to 150 of about 731 (170)

Hummingbird contribution to plant reproduction in the rupestrian grasslands is not defined by pollination syndrome

Oecologia, 2022
Floral traits mediate the roles of distinct animals as effective pollinators along a generalization/specialization continuum. Many plant species are visited by different pollinator functional groups and the specific contribution of each group is expected to reflect the set of floral characteristics defined by pollination syndromes.
Marsal D. Amorim, Pietro K. Maruyama, Gudryan J. Baronio, Cristiano S. Azevedo, André R. Rech   +4 more
openaire   +2 more sources

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
openaire   +1 more source

Seed Germination Ecology in Rupestrian Grasslands

2016
Germination behavior is a phenotype that results from the interaction between seed properties (intrinsic factors) and environmental (extrinsic) factors. Since germination is an irreversible process and seedling stage is particularly susceptible to harsh conditions, selection should favor strategies that prevent seeds from germinating under unfavorable ...
Flávia Peres Nunes, Roberta L. C. Dayrell, Fernando A. O. Silveira, Daniel Negreiros, Denise Garcia de Santana, Fabio Janoni Carvalho, Queila Souza Garcia, G. Wilson Fernandes   +7 more
openaire   +1 more source

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

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

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

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

Phenology Patterns Across a Rupestrian Grassland Altitudinal Gradient

2016
Phenology is the study of recurrent biological events in the life cycle of organisms. For plants, reproductive events such as flowering and fruiting are critical stages in their life cycles, which also greatly affect other organisms depending on these resources.
Rocha, Nathália Miranda Walter Bretas, Carstensen, Daniel Wisbech, Fernandes, Geraldo Wilson, Le Stradic, Soizig, Buisson, Elise, Morellato, Leonor Patrícia Cerdeira   +5 more
openaire   +3 more sources

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.
Guerra, Tadeu J., Carstensen, Daniel W., Morellato, Leonor Patricia Cerdeira, Silveira, Fernando A. O., Costa, Fernanda V.   +4 more
openaire   +2 more sources

Water Resources in the Rupestrian Grasslands of the Espinhaço Mountains

2016
The rupestrian grasslands in Minas Gerais State comprise headwaters of important watersheds that drainages for millions citizens in over 400 cities in Sao Francisco and Doce river basins. The human activities in the rupestrian grasslands include domestic supply, agriculture, forestry, cattle raising, industry, and mineral extraction.
Marcos Callisto, José Francisco Gonçalves, Raphael Ligeiro   +2 more
openaire   +1 more source