Floristic differentiation of a deciduous seasonal forest tree stratum, Jaguari, RS, Brazil

• Autor(a) principal: Andrzejewski, Camila
• Data de Publicação: 2019
• Outros Autores: Callegaro, Rafael Marian, Longhi, Solon Jonas, Biali, Leonardo Job
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UnB
• Texto Completo: https://repositorio.unb.br/handle/10482/36656; https://doi.org/10.1590/2179-8087.013915; http://orcid.org/0000-0001-8316-2483; http://orcid.org/0000-0003-4858-5186; http://orcid.org/0000-0002-5701-2139; http://orcid.org/0000-0002-3274-1108
• topic: Análise por conglomerados; Comunidades vegetais; Distribuição espacial

This study aims at determining and differentiating the floristic groups of a Deciduous Seasonal Forest’s arboreal component, located on the ridge of the Southern Plateau, in Southern Brazil. Individuals with diameter at breast height ≥ 5.0 cm were sampled in sixty-two plots measuring 10 m × 10 m, which were systematically installed in the forest. Three floristic groups were found: Middle Stage, including 54 species, with Casearia sylvestris as an indicator species; Advanced Stage, with 38 species and Pilocarpus pennatifolius as the indicator species; and Altered Forest, with 27 species and Apuleia leiocarpa, Helietta apiculata, and Machaerium paraguariense as indicator species. A higher proportion of climax light-demanding individuals was reported in the Middle Stage and Altered Forest groups, contrasting with the Advanced Stage group, in which climax shade-tolerant species were predominant. In addition, the groups were differentiated according to their dispersion strategy, with specific syndromes occurring in each group (Middle Stage: zoochory; Advanced Stage: autochory; Altered Forest: anemochory).