Abstract
A floristic survey and analysis of ecological aspects of the pteridophytes occurring at the brejo of Serra Negra, Municipality of Bezerros, State of Pernambuco - Brazil, was conducted. The study site, characterized as Brejo de Altitude or Floresta Serrana, presents a flora that distinguishes itself from the surrounding semi-arid vegetation. Therefore, the Brejos de Altitude and particularly the Serra Negra of Bezerros are currently going through a very intense devastation process. Thirty-one specific taxa have been found in a period of a year, among which the Polypodiaceae is well represented comprising 46% of these registers. The species Trichomanes angustifrons (Fée) Wess. Boer stands out as a new register for Northeastern Brazil. The predominant ecological aspects observed at the brejo of Serra Negra of Bezerros were herbaceous habit, lithophytic habitat, a mesophylous type of environment, life form hemicryptophyte and the rocky formations as preferential environments. Despite the highly restricted native vegetation, the area still owns conditioning factors for the occurrence of a certain diversity of species. These factors are important environmental conditions such as low temperatures, high relative air humidity, and night and morning mist. These conditions have been maintained, and are important and necessary to the survival of the pteridophyte flora.
Keywords:
Bezerros; Brejo de Altitude; Floresta Serrana; Pernambuco; pteridophytes