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Registros recuperados: 3
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Feeding visit time of fruit-eating birds in Cerrado plants: revisiting the predation risk model Zoologia
Silva,Igor Aurélio; Figueiredo,Rodolfo Antônio de; Matos,Dalva Maria da Silva.
Fruiting plants that attract frequent visits by fruit-eating birds tend to be predictable patches for a predator. Consequently, the risk of a predator attack increases the longer a bird stays on a fruiting plant. We tested whether large and cryptic species of fruit-eating birds spend more time per feeding visit than smaller and conspicuous ones in fruiting plants of the Brazilian Cerrado. Data were obtained from the literature for eight fruiting plant species and from field observations of birds feeding on fruits of Zanthoxylum rhoifolium (Rutaceae). We searched for a positive linear relationship between the mean visit time and the total length of the species, considering bird color as a covariate. Feeding visits of the large and cryptic bird species...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Body size; Crypsis; Frugivory; Zanthoxylum rhoifolium.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000400013
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First record of herbivory of the invasive macrophyte Hedychium coronarium J. König (Zingiberaceae) Biota Neotropica
Castro,Wagner Antonio Chiba de; Moitas,Marcel Loyo; Lobato,Gabriela Monteiro; Cunha-Santino,Marcela Bianchessi da; Matos,Dalva Maria da Silva.
Invasive species can cause structural and functional changes in their non-native habitats, such as changes in the trophic chain. We describe ramet herbivory of butterfly ginger, an aggressive aquatic weed in Brazil, by capybaras in a floodplain area of a Cerrado reserve. This is the first record of herbivory of H. coronarium in invaded areas. Capybaras could be using the butterfly ginger as habitat and as a food resource, which could cause changes in apparent competition between these invasive and native macrophytes.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Butterfly ginger; Aquatic weed; Capybaras.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400368
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Spatial heterogeneity of soils of the Cerrado-Pantanal ecotone Rev. Ciênc. Agron.
Lucena,Isabela Codolo de; Amorim,Ricardo Santos Silva; Lobo,Francisco de Almeida; Baldoni,Raquel Negrão; Matos,Dalva Maria da Silva.
In areas of the Cerrado-Pantanal ecotone in Brazil, the soil displays features which are inherent to the processes of soil formation, both of the Central Plateau and the Pantanal Plain. Given this premise, the area should be noteworthy for its high level of edaphic heterogeneity. The present study aimed to determine the physical, chemical and physico-hydric attributes that best explain the heterogeneity of soils in areas of the Cerrado-Pantanal ecotone, and to assess whether these attributes differ between the studied fragments and between the Cerrado soils of the Central Plateau and of the Pantanal Plain. One hundred and sixty soil samples were collected and 11 profiles described for five areas of the Cerrado-Pantanal ecotone (15º43' S, 56º04' W). The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Physicochemical attributes; Geostatistics; Plinthosols; Latosols.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000400005
Registros recuperados: 3
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