Please use this identifier to cite or link to this item: http://repositorio.ufc.br/handle/riufc/63432
Type: Artigo de Periódico
Title: Myrtaceae throughout the Espinhaço Mountain Range of centraleastern Brazil: floristic relationships and geoclimatic controls
Authors: Bünger, Mariana de Oliveira
Stehmann, João Renato
Oliveira-Filho, Ary Teixeira
Keywords: Floristic connections;Montane regions;Multivariate analysis;Atlantic Forest
Issue Date: 2014
Publisher: Acta Botanica Brasilica
Citation: BÜNGER, Mariana de Oliveira; STEHMANN, João Renato; OLIVEIRA-FILHO, Ary Teixeira. Myrtaceae throughout the Espinhaço Mountain Range of centraleastern Brazil: floristic relationships and geoclimatic controls. Acta Botanica Brasilica, [s. l.], v. 28, n. 1, p. 109-119, 2014.
Abstract: Although biological surveys and taxonomic revisions provide key information to ecological and evolutionary studies, there is a clear lack of floristic and phytogeographic studies of the mountainous regions of Brazil, which harbor some of the most threatened plant ecosystems on the planet. Myrtaceae has been reported to be one of the most important families in the upland areas of Brazil, as well as in the Atlantic Forest Domain. In this study, we investigated the floristic composition of Myrtaceae throughout the Espinhaço Mountain Range and adjacent highlands of central- -eastern Brazil, testing the following hypotheses: floristic similarity increases with geographic proximity; and species distribution is affected by geoclimatic variables. We performed statistical analyses using a database containing records of 199 species in 19 areas and of their respective geoclimatic variables. We also performed ordination analysis using non-metric multidimensional scaling (NMDS), the first and second axes of which explained 69% and 78% of the variation, respectively. The NMDS analysis demonstrated that variations in the Myrtaceae flora are highly sensitive to geoclimatic variables and geographic proximity. The NMDS ordination also showed a predominantly south-north gradient, as did the cluster analysis. This gradient was highly correlated with variations in rainfall and temperature, which are also associated with the three domains that coincide with the Espinhaço Mountain Range.
URI: http://www.repositorio.ufc.br/handle/riufc/63432
Access Rights: Acesso Aberto
Appears in Collections:DBIO - Artigos publicados em revista científica

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