Título:	Discovering Brazilian cliff vascular flora on basaltic rock outcrops in Serra do Rio do Rastro, Santa Catarina.
Autoria:	SANDRINI, J. G. BONA, M. de ZANONI, I. Z. MATIOLA, A. V. HEIDEN, G. GASPER, A. L. de TREVISAN, R. FUNEZ, L. A. SANTOS, R. dos ELIAS, G. A.
Afiliação:	JÚLIA GAVA SANDRINI, UNIVERSIDADE DO EXTREMO SUL CATARINENSE; MICAEL DE BONA, UNIVERSIDADE DO EXTREMO SUL CATARINENSE; IARA ZACCARON ZANONI, UNIVERSIDADE DO EXTREMO SUL CATARINENSE; AMANDA VIEIRA MATIOLA, UNIVERSIDADE DO EXTREMO SUL CATARINENSE; GUSTAVO HEIDEN, CPACT; ANDRÉ LUÍS DE GASPER, UNIVERSIDADE REGIONAL DE BLUMENAU; RAFAEL TREVISAN, UNIVERSIDADE FEDERAL DE SANTA CATARINA; LUÍS ADRIANO FUNEZ, HERBÁRIO BARBOSA RODRIGUES; ROBSON DOS SANTOS, UNIVERSIDADE DO EXTREMO SUL CATARINENSE; GUILHERME ALVES ELIAS, UNIVERSIDADE DO EXTREMO SUL CATARINENSE.
Ano de publicação:	2026
Referência:	Biota Neotropica, v. 26, n. 1, 2026.
Conteúdo:	Abstract: Basaltic cliffs in southern Brazil support specialized plant communities shaped by extreme environmental conditions, high habitat heterogeneity, and spatial isolation. Despite their ecological importance, these environments remain poorly documented and are increasingly threatened by anthropogenic pressures. Here, we present the first comprehensive floristic inventory of the rupicolous vascular flora of the Serra do Rio do Rastro (SRR), Santa Catarina. A total of 317 species (204 genera and 71 families) were recorded, exceeding the floristic richness previously reported for other areas of the Aparados da Serra Geral region. Asteraceae (56 spp.) and Poaceae (31 spp.) were the most species-rich families, and herbaceous forms predominated (197 spp.). Twenty-one species are endemic to Santa Catarina, including Neocabreria catharinensis, which is documented here after a 64-year gap without herbarium records, and 20 species are officially recognized as threatened with extinction. Remarkably, 69.1% of species had no prior records in digital herbarium databases for the studied area, underscoring the value of targeted fieldwork for documenting biodiversity in understudied habitats. Our results identify the SRR as a biodiversity refuge of both regional and national significance, while exposing critical conservation gaps, particularly the absence of updated threat assessments for narrowly distributed taxa. We recommend the urgent integration of cliff ecosystems in conservation planning, supported by systematic monitoring, invasive species control, and regular updating of threatened species lists.
Thesagro:	Espécie em Extinção
NAL Thesaurus:	Threatened species
Palavras-chave:	Flora rupícola Mata Atlântica Espécies ameaçadas Aparados da Serra Geral Espécies endêmicas Campos de Altitude Endemic species Highland grasslands Rupicolous flora
Digital Object Identifier:	https://doi.org/10.1590/1676-0611-BN-2025-1855
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPACT)