Avaliação e síntese do estado de conservação da flora brasileira

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2021-08-31

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Universidade Federal de Goiás

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Brazil harbors the richest and perhaps the most endangered flora on the planet, and its effective conservation is still a significant challenge. In the first chapter of this Ph.D. dissertation, we thoroughly analyzed the extinction risk assessment process, highlighting its strengths, weaknesses, and opportunities to expand and streamline risk assessments. In the second chapter, we aggregated and developed a series of tools for integrating and analyzing the quality of species occurrence records in an R package. We exemplified its functionality by showing how errors and uncertainties in occurrence records change the species richness pattern of plants in Brazil. In the third chapter, we assessed how errors present in taxonomic, spatial, and temporal information from occurrence records can lead to erroneous classifications of the risk of extinction of plant species in Brazil. Our results indicate that high-quality data are needed for an accurate prediction of threatened species and that preliminary assessments can predict the extinction risk of non-threatened species even in the presence of taxonomic, geographic, and temporal issues. In the fourth chapter, we assessed the effectiveness of protected areas and indigenous lands in representing all known threatened plant species in Brazil. We found that between 10 and 33% of species are entirely outside protected areas. Finally, in the fifth chapter and in Appendix I, we presented outreach texts aimed at children describing in a simple and detailed way the risk assessment process and the current situation of threat experienced by species in Brazil. The results of this thesis point out avenues for a greater understanding and expansion of the extinction risk assessment process to enable the effective conservation of biodiversity.

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RIBEIRO, B. R. Avaliação e síntese do estado de conservação da flora brasileira. 2021. 266 f. Tese (Doutorado em Ecologia e Evolução) - Universidade Federal de Goiás, Goiânia, 2021.