Chuva de sementes em um fragmento de Mata Atlântica no Município Elísio Medrado – Bahia

Abstract

This study aimed to quantify and qualify the seed rain in a fragment of Atlantic Forest located in the Jequitiba Reserve, belonging to Environmental Group of Bahia (GAMBÁ), in the city of Elísio Medrado - Bahia. For determination of the seed rain were installed eighteen collectors in the study area. The collections were made every two months during the period april to November of 2011. In this period were sampled 190 diaspores belonging to 25 species. The morphospecies S24 contributed to the biggest abundance of diaspore, it being responsible for 125 units of diaspores (65,79%) sampled at the collectors. The highest absolut frequency was found 16,66. The absolut density ranged 0,22 to 27, 78 diaspore/m2. The highest importance value was 64,36, belonging to the morphospecies S24 (Asteraceae). It was found a value of 3,13 a density index value of Shannon-Weaver. The value of Pielou's evenness was 0,97. Tem species (40%) had zoochorous dispersion syndrome, 8 (32%) were classified in anemochoric and 7(28%) was not possible make the classification. The results indicate that the fragment of Atlantic Forest studied is found preserved and it presents potentiality for restoration of degraded areas.