Abstract
CONSEQUENCES OF HABITAT FRAGMENTATION ON THE REPRODUCTIVE ECOLOGY OF TIMBER TREES IN TROPICAL FORESTS, WITH EMPHASIS AT THE AMAZONIA. The Amazon Forest comprises an area of 4.9 millions of km 2 , equivalent to 40% of the world tropical forests, with the greatest diversity of biodiversity on Earth. Despite its importance on the biodiversity conservation, 17% of its forest cover has been removed on the last three decades. Timber industry and agriculture activities are threatening the integrity and functionality of the Amazon forest. The ecological sustainability of forest management practices must include criteria and indicators for genetic variability maintenance and its correlated processes. Habitat fragmentation reduces continuous forest lands to small isolated areas, thus reducing the effective number of trees, the number of pollen donors, and the amount of compatible pollen deposited on the flowers pistils. This may lead to low fruit set. A decline on the pollinators’ population, increase on inbreeding and changes on the pollinator species composition is also expected. In order to guarantee the forest management sustainability, including the upholding of genetic diversity in managed forests, it is essential to contemplate information on the reproductive biology of the target species. Besides, the impact on the pollinators frequency and composition should not be disregarded.
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