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Invertebrate conservation in urban areas: Ants in the Brazilian Cerrado
The results indicate that public squares in commercial areas presented the least conservation value given the predominance of exotic ant species (mostly Pheidole megacephala). Expand
Canopy connectivity and the availability of diverse nesting resources affect species coexistence in arboreal ants.
This study addresses how access to tree-based resources and the diversity of pre-existing nesting cavities affect species diversity and coexistence in tropical arboreal ant assemblages, and contributes strong evidence that greater resource access and greater cavity diversity have positive effects on species coexistence on local ar boreal antassemblages. Expand
Mutualism between Maieta guianensis Aubl., a myrmecophytic melastome, and one of its ant inhabitants: ant protection against insect herbivores
SummaryThe hypothesis that ants (Pheidole minutula) associated with the myrmecophytic melastome Maieta guianensis defend their host-plant against herbivores was investigated in a site near Manaus,Expand
Effects of Amazonian forest fragmentation on the interaction between plants, insect herbivores, and their natural enemies
It is suggested that forest fragmentation may affect the dispersal of insect herbivores, and reduce their abundances on small forest isolates, and altered patterns of herbivory on tree saplings may have important consequences for forest structure and dynamics. Expand
Habitat diversity enhances ant diversity in a naturally heterogeneous Brazilian landscape
It is indicated that conservation of the Cerrado ant fauna depends on the maintenance of habitat diversity, and overall ant species richness (γ diversity) was partitioned additively into three components: α1, β1, and β2, indicating that species richness and composition at multiple scales are of crucial importance for conservation. Expand
Climatic drivers of hemispheric asymmetry in global patterns of ant species richness.
Examining the latitudinal pattern of species richness across 1003 local ant assemblages finds latitudinal asymmetry, with southern hemisphere sites being more diverse than northern hemisphere sites, and the most parsimonious explanation is that greater climate change since the Eocene in the northern than in the southern hemisphere has led to more extinctions in the north with consequent effects on local ant species richness. Expand
The biodiversity cost of carbon sequestration in tropical savanna
Fire suppression resulted in increased carbon stocks but was associated with acute species loss and Richness of savanna specialists, the species most at risk of local extinction due to forest encroachment, declined, highlighting the important role of fire in maintaining biodiversity in tropical savannas. Expand
Relationship between tree size and insect assemblages associated with Anadenanthera macrocarpa
In A. macrocarpa, there was not a replacement of insect species with plant ontogeny, which is at variance with those conducted in tropical evergreen forests and which show a clear stratification between the understory and canopy insect faunas. Expand
Ant diversity in an Amazonian savanna: Relationship with vegetation structure, disturbance by fire, and dominant ants
The results strongly suggest that the ant fauna of Amazonian savannas is affected directly and indirectly by the structure of the vegetation. Expand
Seed predators limit plant recruitment in Neotropical savannas
The results lend support to the recent hypothesis that herbivores have major and underappreciated impacts in Neotropical savannas, and that top–down factors can influence the demography of plants in this extensive and biodiversity-rich biome in previously unexplored ways. Expand