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| Neumann,Micheline Krüger; Schneider,Paulo Henrique; Schmitt,Jairo Lizandro. |
| Cyathea corcovadensis (Raddi) Domin occurs in northeastern, southeastern and southern Brazil, being widely distributed in the last. This was a three-year study, conducted from August 2008 to July 2011, in which we evaluated C. corcovadensis in a subtropical forest in southern Brazil. For the first year (August 2008 to July 2009), we monitored 30 plants on a monthly basis in order to analyze phenological events (vegetative and reproductive) and caudex growth. We also estimated the ages of the plants. Except in June and July of 2009, monthly leaf emergence and senescence were continuous and irregular, which prevented total leaf abscission, during that first year. Leaf emergence, senescence and fertility correlated with photoperiod, temperature and plant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth rates; Monitoring; Tree fern; Climatic variables. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000200014 |
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| Schneider,Paulo Henrique; Schmitt,Jairo Lizandro. |
| In tropical forests, tree ferns constitute an important phorophyte for the establishment and occurrence of epiphytic species. Composition, structure and vertical distribution of epiphytic ferns were studied on Alsophila setosa Kaulf., in a semideciduous seasonal forest fragment, in the city of Morro Reuter (29º32'07"S and 51º05'26"W), in the state of Rio Grande do Sul, Brazil. The sample consisted of 60 caudices of at least 4 m high, which were divided in 1 m intervals from the ground. The specific importance value was estimated trough the coverage value and caudex frequency at the intervals. A total of 14 species was recorded, belonging to 10 genera and five families. The highest specific richness occurred in Polypodiaceae. The rarefaction curve for the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Epiphytes; Richness estimators; Tree fern. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000300007 |
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| Schmitt,Jairo Lizandro; Schneider,Paulo Henrique; Windisch,Paulo Günter. |
| No sul e sudeste do Brasil, a samambaia arborescente Dicksonia sellowiana Hook. é ainda extraída ilegalmente de remanescentes florestais para uso da capa fibrosa do seu cáudice, bem como para cultivo como planta ornamental. No presente trabalho, o crescimento do cáudice, a produção, expansão e senescência de frondes, bem como a formação e liberação de esporos de D. sellowiana foram estudados com base na observação de 37 plantas. Durante um período de um ano de observação, os cáudices cresceram, em média, 5,65 cm ano-1, sendo que a taxa de crescimento se correlacionou fortemente com a altura das plantas. As taxas de produção de frondes novas (10,86 frondes ano-1) e de senescência (10,54 frondes ano-1), similares, evidenciaram capacidade de manter um número... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Auto-ecologia; Fenologia; Pteridófita arborescente; Taxas de crescimento; Xaxim. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000100030 |
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