Massi K G, Eugênio C U O, Franco A C
Programa de Pós-graduação em Ecologia, Instituto de Ciências Biológicas, Universidade de Brasília - UnB, Campus Darcy Ribeiro, CEP 70910-900, Brasília, DF, Brazil.
Programa de Pós-graduação em Botânica, Instituto de Ciências Biológicas, Universidade de Brasília - UnB, Campus Darcy Ribeiro, CEP 70910-900, Brasília, DF, Brazil.
Braz J Biol. 2017 Nov;77(4):876-886. doi: 10.1590/1519-6984.06416. Epub 2017 May 4.
In Cerrado, studies of post-fire vegetation recovery show that some herbaceous species are able to flower shortly after fires. However, these were mainly short-term studies that focused on grasslands and savannas. Little is known about the effects of fire on ground layer of forests that border the savannas in Central Brazil. Thus, an accidental burning gave us the opportunity to describe the reproductive activity of the ground layer vegetation after a fire event along a savanna-forest boundary at the IBGE Ecological Reserve, Brasília, Brazil. During the 16-month of the inventory, we registered 170 herbaceous species flowering or fruiting, of which 52 species (31%) may have been influenced by fire that changed their times of reproduction. In the savanna plots reproduction peaked at the end of the rainy season. Of the total number of reproducing species, 90 species occurred only in the savanna and four in the forest. Five herbs were recorded in the forest, savanna and border environments. Late dry season fire probably lead the majority of herbaceous species to have their reproduction spread throughout the study time.
在塞拉多地区，关于火灾后植被恢复的研究表明，一些草本物种能够在火灾后不久开花。然而，这些主要是侧重于草原和稀树草原的短期研究。对于火灾对巴西中部稀树草原边界森林地被层的影响，人们了解甚少。因此，一场意外火灾让我们有机会描述巴西巴西利亚IBGE生态保护区稀树草原 - 森林边界火灾事件后地被层植被的繁殖活动。在为期16个月的清查中，我们记录了170种开花或结果的草本物种，其中52种（31%）可能受到火灾影响，改变了它们的繁殖时间。在稀树草原样地，繁殖在雨季结束时达到峰值。在繁殖物种总数中，90种仅出现在稀树草原，4种出现在森林中。有5种草本植物在森林、稀树草原和边界环境中均有记录。旱季后期的火灾可能导致大多数草本物种的繁殖期在整个研究期间分布开来。
