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Vascular epiphytes of the Atlantic Forest in the Sinos River basin, state of Rio Grande do Sul, Brazil: richness, floristic composition and community structure.
Barbosa, M D; Becker, D F P; Cunha, S; Droste, A; Schmitt, J L.
Afiliación
  • Barbosa MD; Programa de Pós-Graduação em Qualidade Ambiental, Universidade Feevale, Novo Hamburgo, RS, BR.
  • Becker DF; Programa de Pós-Graduação em Qualidade Ambiental, Universidade Feevale, Novo Hamburgo, RS, BR.
  • Cunha S; Programa de Pós-Graduação em Qualidade Ambiental, Universidade Feevale, Novo Hamburgo, RS, BR.
  • Droste A; Programa de Pós-Graduação em Qualidade Ambiental, Universidade Feevale, Novo Hamburgo, RS, BR.
  • Schmitt JL; Programa de Pós-Graduação em Qualidade Ambiental, Universidade Feevale, Novo Hamburgo, RS, BR.
Braz J Biol ; 75(2 Suppl): 25-35, 2015 May.
Article en En | MEDLINE | ID: mdl-26270210
The Atlantic Forest, which has a vast epiphytic richness, is a priority area for preservation, listed as one of the five most important world hotspots. Vascular epiphyte richness, composition and community structure were studied in two fragments, one of the ombrophilous (29º43'42"S and 50º22'00"W) and the other of the seasonal (29º40'54"S and 51º06'56"W) forest, both belonging to the Atlantic Forest biome in the Sinos River basin, Rio Grande do Sul, Brazil. In each fragment, 40 trees, divided into four ecological zones, were analyzed. In each zone, the occurrence of the species was recorded, and the importance value of each species was calculated according to the frequency of phorophytes and intervals, and cover scores. The Shannon index was calculated for the two communities. In the fragment of the ombrophilous forest (F1), 30 epiphytic species were recorded, and in the seasonal forest (F2), 25. The highest importance value was found for Microgramma squamulosa (Kaulf.) de la Sota in both fragments. The diversity indexes for F1 (H'=2.72) and F2 (H'=2.55) were similar and reflected the subtropical location of the areas. The decrease in mean richness in both fragments in zone 3 (internal crown) to zone 4 (external crown) may be associated with time and space availability for epiphyte occupation and microclimate variations. Exclusive species were found in the areas, which suggest that a greater number of preserved fragments may result in a greater number of preserved epiphytic species in the Sinos River basin.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bosques / Embryophyta / Biodiversidad País/Región como asunto: America do sul / Brasil Idioma: En Revista: Braz J Biol Asunto de la revista: BIOLOGIA Año: 2015 Tipo del documento: Article Pais de publicación: Brasil
Texto completo
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Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bosques / Embryophyta / Biodiversidad País/Región como asunto: America do sul / Brasil Idioma: En Revista: Braz J Biol Asunto de la revista: BIOLOGIA Año: 2015 Tipo del documento: Article Pais de publicación: Brasil