PRINCIPAIS FAMILIAS BOTÂNICAS DE OCORRÊNCIA EM ÁREAS DE FRAGMENTOS DO BREJO PARAIBANO SUBMETIDOS AO FOGO

Abstract

In Brazil fires are one of the most used practices in agriculture, which has caused serious damage to biodiversity.Even within this context, little has been done to change this reality, and even more incipient in relation to studies aimed at assessing the impacts of fire on vegetation. The objective of this study was to evaluate the impacts of the fire on the occurrence of plant families in fragments Open Evergreen Forest, the city of Areia, PB. We selected three areas where wildfires occurred at different times (Area I - Burnt forest to five months, Area II - Burnt forest to three years and Area III - Fragment intact forest), we collected 20 soil samples from each area where material was placed to germinate in a greenhouse for a period of six months. The germinated seedlings were collected for identification of the botanical family, which identified 21 plant families, which were classified into different life forms (herbaceous, shrub, woody, grasses, vines), with its different levels in the successional scale. The results show that the fire caused a decrease in all forms of life, directly affecting the ecological dynamics in tropical forests where regeneration involves the establishment of various successional ecological groups.