Características de árvores emergentes utilizadas por Gavião-real (Harpia harpyja) para nidificação no centro e leste da Amazônia Brasileira

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

The Harpy eagle (Harpia harpyja) the American powerful raptor lives thought the New Worlds forests, from the south of Mexico to the northeast of Argentina. Between 1984 and 2000, that species was listed in a threatened of extinction Brazilian species list. At the Atlantic Forest the population declined drastically, by the way of the deforestation - the watches between 1980 and 2002 became rare. By the native community of "Infierno" in Peru, the harpy eagles are found nesting at secondary or fragmented forests. Actually in Central America the harpy eagles population is restricting at the conservation areas and the species have been virtually eliminated. In Brazilian Legal Amazon, the evidences from the last 6 years indicate that this species still in abundance. Similar to the conservation initiatives in Venezuela, a Harpy Eagle Conservation Program had started to the Brazilian Amazon. Begun in 1999 the Project have being register 33 nests through the Amazonas, Roraima, Rondônia, Pará and Mato-Grosso states. Many studies refers to the Harpy eagles nesting at the emergent trees,but without goals to define the tree architectural patterns. This study embraced the Amazonas and Pará states, with 16 nest sites to compare colonized and non colonized emergent trees (the last ones found at minimum of the 300m from first ones, in the same forest surrounding, when was possible).In the flooded forests I have just 5 colonized trees. The main land nest sites are better spatially longitudinally distributed, but in another hand they are by the access ways. I measure variables to express the emergent trees architecture and the surrounding forests from it to find micro-habitat characters. The variables have being tested by logistic regression (to the architectural and microhabitat patterns) and by MANOVA (to the forest types). I detected that the angles between the branches were significant as much as the canopy height to the colonization effect. The forest kind affects the tree heights and there is a decreasing EastWest gradient in tree height. Theses knowledge could be an useful tool to support decisions in the conservation areas establishment and/or management and zoning.

ASSUNTO(S)

amazônia arquitetura de copa gavião-real ecologia conservação de espécies uso de habitat harpia

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