Data/hora: 10/06/2024 14:02:16

Provedor de dados: | 39
País: | Brazil
Título: | Environmental factors affect population structure of tree ferns in the Brazilian subtropical Atlantic Forest
Autores: | Schwartz,Carlos Eduardo; Gasper,André Luís de.
Data: | 2020-03-01
Ano: | 2020
Palavras-chave: | Cyatheaceae; Dicksoniaceae; Environmental variables; Population structure; Regression analysis; Tree ferns.
Resumo: | ABSTRACT Tree ferns are important elements of tropical forests, mainly because they are common and provide microhabitats for epiphytic plants. Due to their ecological importance, the aim of this study was to evaluate population structure, distribution, and influence of environmental variables on tree ferns in the state of Santa Catarina, southern Brazil. All tree ferns with a diameter at breast height ≥ 10 cm on 418 sampling units (SUs) systematically distributed throughout the study area were measured (total sampled area of ​​153.4 ha). Population structure was evaluated through classical phytosociological parameters and the relationships among dominance and environmental variables were evaluated through multiple linear regression models. Dicksonia sellowiana presented the greatest importance value among all species (IV = 13.19 %), followed by Alsophila setosa (IV = 4.37 %) and Cyathea phalerata (IV = 2.71 %). Altitude and mean rainfall of the driest quarter were significantly related to the dominance of D. sellowiana in most of the SUs. The mean temperature of the driest quarter and aspect were significantly related to the dominance of Cyatheaceae. Our study demonstrates that tree ferns are important elements of forest communities in the state of Santa Catarina.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100204
Editor: | Sociedade Botânica do Brasil
Relação: | 10.1590/0102-33062019abb0338
Formato: | text/html
Fonte: | Acta Botanica Brasilica  v.34 n.1 2020
Fonte: | info:eu-repo/semantics/openAccess