Atributos reprodutivos de espécies arbustivas em uma área de mata úmida no Nordeste do Brasil

Abstract

A great wealth of flowering plants are found in tropical forests and the study of the different processes involved in the reproduction of the species is crucial for understanding the composition and structure of communities, and provide information to help understand the evolutionary history of plant breeding. In tropical ecosystems, involving animals in the reproductive processes of plants is of great importance, occurring with high frequency. The breaking of these interactions can lead to loss of ecological groups, affecting the reproductive success of plants and consequently the maintenance of their populations. The present work aims to characterize the reproductive attributes of plant community of shrubs in wet forest Araripe National Forest, through analysis of sexual systems, pollination systems and systems of diaspora dispersal. Our hypothesis is that the proportions of such reproductive attributes are similar to those recorded for other communities woody tropical forest formations, there is a predominance of the sexual system hermaphrodite, the pollination system entomófilo (especially melittophily) and dispersion zoochoric. Monthly collections were made of species in the reproductive stage, and focal observations of pollinators and seed dispersers. Found in assembly plants studied a high frequency of hermaphroditic species (88,23%) with pollination system entomófilo (98,53%), held mainly by bees (64,70%) and diasporas zoochorous (77,61%). This result reinforces the importance of ecological interactions for maintaining biodiversity and corroborates several studies conducted in different tropical ecosystems, confirming a trend in these environments