Diferentes distúrbios antrópicos na paisagem podem influenciar padrões florísticos e estruturais da Mata Atlântica?
DOI:
https://doi.org/10.26848/rbgf.v14.4.p2265-2285Keywords:
Fitossociologia, Teoria do Distúrbio intermediário, Reserva da Biosfera da Serra do EspinhaçoAbstract
Este estudo teve por objetivo descrever e comparar as diversidades alfa e beta e estrutura do componente arbóreo em remanescente de Floresta Estacional Semidecidual. A vegetação arbórea foi amostrada em duas bordas em contato com pastagem (BP), cafeicultura (BC), e no interior do fragmento (INT). Foram amostrados no total 2.840 indivíduos, identificados em 56 famílias, 144 gêneros e 271 espécies (94 na BC, 128 BP e 178 INT). Os trechos de borda foram caracterizados por maior densidade e menor área basal que o interior, indicando a influência de distúrbios. As variações na composição florística estrutural das comunidades arbóreas sofreram influência das variações ambientais regionais e locais, além do histórico de uso da área, conforme as Teorias de Nicho e do Distúrbio Intermediário.
Different Anthropic Disturbances in the Landscape can influence Floristic and Structural Patterns of the Atlantic Forest?
This study aimed to describe and compare the floristic and structural component of the tree component, as well as the alpha and beta diversity, as well as the floristic similarity of a remnant of Semideciduous Forest. The tree vegetation was sampled at two edges in contact with pasture (BP) and coffee growing (BC), and inside the fragment (INT). 2.840 individuals were sampled, identified in 56 families, 144 genera and 271 species (94 BC, 128 BP and 178 INT). The border stretches were characterized by higher density and smaller basal area than the interior, indicating the occurrence of disturbances. The variations in the structural floristic composition of the tree communities wereinfluenced by regional and local environmental variations, as well as the historical use of the area, according to Niche and Intermediate Disturbance Theories.
Keywords:Phytosociology, Intermediate Disturbance Theory, Serra do Espinhaço Biosphere Reserve.
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