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| Silva,Rejane Maria da; Ribeiro,Rayane de Tasso Moreira; Souza,Renata Janaína Carvalho de; Oliveira,Antônio Fernando Morais de; Silva,Suzene Izídio da; Gallão,Maria Izabel. |
| ABSTRACT Biosynthesized from very long-chain fatty acid wax precursors, n-alkanes make a valuable contribution to the taxonomy of plants. The alkane components of foliar epicuticles of seven Neotropical species of Lecythidaceae were investigated: Bertholletia excelsa, Cariniana legalis, Couroupita guianensis, Eschweilera alvimii, Eschweilera ovata, Gustavia augusta and Lecythis pisonis. Specimens were collected in the metropolitan area of Recife, Pernambuco, and their n-alkane fractions were analyzed by gas chromatography. The chemical relationships among the species were then evaluated using cophenetic correlation and UPGMA. Among the seven species, a total of 15 n-alkanes, with 21-35 carbon atoms, were identified and formed a consistent group of B.... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Lecythidaceae; Neotropics; Taxonomy; Tropical rain forest; Wax. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000100137 |
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| Araújo,Elcida de Lima; Silva,Kleber Andrade da; Ferraz,Elba Maria Nogueira; Sampaio,Everardo Valadares de Sá Barretto; Silva,Suzene Izídio da. |
| Objetivou-se avaliar a influência da heterogeneidade micro-espacial no aumento da fitodiversidade herbácea em uma área de caatinga de Caruaru, Pernambuco, Brasil. Microhabitats rochosos, planos e ciliares foram selecionados, e nesses foi realizado um levantamento quali-quantitativo das herbáceas ocorrentes em 35 parcelas de 1 m², em cada microhabitat. Todas as ervas nas parcelas foram contadas, marcadas e identificadas, coletando-se também outras espécies herbáceas ocorrentes entre as parcelas. A riqueza taxonômica total de herbáceas foi mais elevada ao se considerar o conjunto dos microhabitats. A flora total foi de 62 espécies, 42 destas ocorrendo no microhabitat rochoso, 32 no plano e 39 no ciliar. O índice de similaridade florística de Jaccard entre os... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Riqueza de espécies; Densidade de herbáceas; Semi-árido; Caatinga; Microsítios. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062005000200011 |
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| Nascimento,Ladivania Medeiros do; Sampaio,Everardo Valadares de Sá Barretto; Rodal,Maria Jesus Nogueira; Silva,Suzene Izídio da; Lins e Silva,Ana Carolina Borges. |
| Surveys were undertaken to examine the floristic changes during secondary succession in three areas of 12 and three of 20-year-old secondary forests in Pernambuco State, Brazil. Two hundred and six species were identified, with 136 being found in the 12-year-old secondary forest and 161 species in the 20-year-old forest. Fabaceae and Myrtaceae were the most important families, increasing in species numbers with regeneration age. Of the 216 species, 115 were trees, 48 shrubs, 16 herbaceous plants, and 24 woody lianas, without significant differences between the two regeneration site ages. NMDS analysis revealed a formation of two floristic groups, distinguishing secondary and mature forests, with a further division within secondary forests in accordance... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Secondary forests; Floristic; Secondary succession. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400009 |
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