Fenologia, assimetria flutuante e biologia reprodutiva de Microstachys serrulata condicionada ao ambiente e à diferentes regimes de exposição à luz solar

Abstract

The phenology study is very important to understand the complex dynamics of forest ecosystems. In this study, we describe the phenology of Microstachys serrulata (Euphorbiaceae), in two populations under different exposure to sunlight. Individuals were evaluated in “campo sujo” area (abundant sunlight) and in cerrado “strict sense” (shaded in most part of time). To evaluate if the stress caused by sunlight exposure affects the individuals development, were utilized fluctuating asymmetry (FA), a stress measurer. We founded variations on phenology, individuals of “campo sujo” tend to wither and shed their leaves, whereas in cerrado’s population the individuals keep their leaves and blossom first. We found FA, but the differences between the two areas, wasn’t relevant. We quantified the floral visitors of M. serrulata, but didn’t found the pollinator. The visitation by ants, the mainly floral visitor, don’t affect the reproductive success, which show some level of auto-pollination.