Estudos biogeográficos, taxonômicos e ecológicos na família Cyatheaceae em Minas Gerais

Abstract

The family Cyatheaceae Kaulf. plays a significant ecological role in Brazilian ecosystems. This study addresses biogeographical, taxonomic, and phenological aspects of this family in Minas Gerais. Chapter 1 analyzes the geographic distribution and species richness of Cyatheaceae in Minas Gerais, based on data obtained from speciesLink and GBIF. A total of 24 Cyatheaceae species were recorded in the state, with the highest diversity found in the Atlantic Forest. Although there is a concentration of records in areas near research centers, many regions remain under-sampled, highlighting the need to intensify collection and conservation efforts. In Chapter 2, a taxonomic survey of the family was conducted in the Ibitipoca State Park, recording seven species across three genera (Alsophila, Cyathea, and Sphaeropteris), with detailed descriptions, comments, illustrations, and identification keys. Chapter 3 analyzes the phenology of Cyathea phalerata Mart in secondary seasonal semi-deciduous forest edge areas, including sites affected by accidental fire, where rapid recovery in leaf number after the fire and irregular phenological patterns were observed, reinforcing the species' resilience. Based on these results, the study aims to contribute to the biogeographical, taxonomic, and phenological knowledge of the Cyatheaceae family, providing support for management and conservation strategies in the face of environmental and anthropogenic pressures.