Carine Dantas Oliveira
Research: How long does it take for tree-cavities and cavity-nesting bird populations to recover in second-growth forests in Central Amazon?
Abstract: The Brazilian Amazon has already lost 7.008 km of primary tropical rainforest, causing the loss of biodiversity. Conservation of native wildlife will increasingly depend on secondary forest that grows in abandoned areas. However, the value of these secondary forests for biodiversity is questionable. For example, tree-cavities may be absent or rare in secondary forest, preventing cavity-nesting birds from recolonizing. Although cavities are assumed to eventually form in secondary forest, it is not known how long this process takes in any tropical forest, making it difficult for managers to select sites for conservation. To determine how (1) tree cavity supply and (2) abundance of understory cavity-nesting birds vary with the age of second-growth in the central Amazon region in Brazil, we will search for and measure all tree cavities and survey cavity-nesting birds in twelve 0.8 ha plots in second-growth (ranging in age from 8 to 30 years), and six plots in primary forests. This project will contribute information to facilitate long term conservation of tree cavities and cavity-using fauna in tropical forests species that depend of the habitat specific for reproduction.