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	Provedor de dados Rev. Bras. Bot. (2) Autor Medina,Branca Maria Opazo (2) Fernandes,Geraldo Wilson (1) Ribeiro,Kátia Torres (1) Scarano,Fabio Rubio (1) Palavra-chave "Serra do Cipó" (1) "campos de altitude" (1) Atlantic rain forest (1) Biogeography (1) Endemisms (1) Natural regeneration (1) Rock outcrops (1) Rocky outcrops (1) Rupicolous plants (1) Seed bank (1) Seedling emergence (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2007 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Species composition and biogeographic relations of the rock outcrop flora on the high plateau of Itatiaia, SE-Brazil Rev. Bras. Bot. Ribeiro,Kátia Torres; Medina,Branca Maria Opazo; Scarano,Fabio Rubio. We studied the flora of vegetation islands on rock outcrops on the Itatiaia Plateau (22°21'S and 44°40'W), at 2,400 m.a.s.l. A total of 114 vascular plant species, which correspond to ca. 20%-25% of the currently inventoried flora of the plateau, were sampled in 197 small vegetation islands (total area of 0.034 ha). Xerophytes and hydrophytes were often found side by side due to environmental heterogeneity at a small scale, explaining in part the high species diversity. Rock outcrops may support floras quite distinct from those in neighbouring habitats, due to the action of strong environmental filters, but in Itatiaia the geographic distribution patterns among rupicolous plants appear to mimic those described for the whole flora around it, with 15.1% of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic rain forest; Biogeography; "campos de altitude"; Endemisms; Rock outcrops; Rupicolous plants. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000400008 The potential of natural regeneration of rocky outcrop vegetation on rupestrian field soils in "Serra do Cipó", Brazil Rev. Bras. Bot. Medina,Branca Maria Opazo; Fernandes,Geraldo Wilson. An area's innate potential to regenerate represents a crucial factor for its conservation and management. The seed rain and seed bank are important agents in the regeneration process. Seed banks are particularly important in communities where there is a high proportion of obligate seeders. Rocky outcrops are habitats where most part of the plant species depends on their seeds to reproduce and maintain viable populations. Therefore, seed banks ought to be important in this vegetation physiognomy. We test the hypotheses that the seed bank of the rocky outcrops found in the rupestrian fields of "Serra do Cipó", Brazil, is richer in species and denser than those formed on different vegetation physiognomies neighboring the outcrops. We then compared species... Tipo: Info:eu-repo/semantics/article Palavras-chave: Natural regeneration; Rocky outcrops; Seed bank; Seedling emergence; "Serra do Cipó". Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000400011 Registros recuperados: 2 Primeira ... 1 ... Última

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