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Universidade Federal de Sergipe (2011)

Composição florística e estrutura da vegetação em área de caatinga e brejo de altitude na Serra da Guia, Poço Redondo, Sergipe, Brasil

Machado, Wedna de Jesus

Titre : Composição florística e estrutura da vegetação em área de caatinga e brejo de altitude na Serra da Guia, Poço Redondo, Sergipe, Brasil

Auteur : Machado, Wedna de Jesus

Université de soutenance : Universidade Federal de Sergipe

Grade : Mestrado em Ecologia e Conservação 2011

Résumé partiel
The Caatinga, exclusively brazilian biome, stands out by a great diversity of plant species, many of which are endemic, with adaptations to water deficit. In areas of higher altitude inside the biome, can be find enclaves of Atlantic Forest, known as Brejos de altitude or Matas Serranas , who make up core areas of significant importance to the preservation of biodiversity. This study was conducted as to characterize structurally the vegetation of the Serra da Guia, located in Poço Redondo, Sergipe State, Brazil, by means of floristic and phytosociological survey of two areas, one located at the base (Caatinga) and the other at the top of the mountain ( Brejo de Altitude ) with systematic and monthly collection held on track and in 30 permanent quadrats of 400 m2, during the period from october/2009 to september/2010. In total, were sampled 365 species (82 families), being 216 species (58 families) in the area of Caatinga and 257 species (70 families) in the area of Brejo. In the Caatinga, families with highest species richness were Fabaceae (30) and Euphorbiaceae (15), while in the Brejo were Fabaceae (23) and Asteraceae (15). In the sampling of woody stratum, the total richness was 92 species, but the Brejo area had the highest richness that the Caatinga (71 and 47 species, respectively).

Mots Clés  : Semiárido Mata serrana Caatinga Brejo de altitude Semiarid Mata serrana Caatinga Brejo de altitude

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