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A PAISAGEM COMO CONDICIONADORA DE BORDAS DE FRAGMENTOS FLORESTAIS
Author(s) -
Bethania Cristiane Herrmann,
Efraim Rodrigues,
André de Lima
Publication year - 2005
Publication title -
floresta
Language(s) - Portuguese
Resource type - Journals
SCImago Journal Rank - 0.386
H-Index - 13
eISSN - 1982-4688
pISSN - 0015-3826
DOI - 10.5380/rf.v35i1.2427
Subject(s) - forestry , native forest , forest fragmentation , geography , ecology , biodiversity , biology
Fragmentos florestais diferem em sua estrutura espacial afetando a composicao de especies em suas bordas. O objetivo deste trabalho foi analisar a influencia dos indices da paisagem sobre as bordas de fragmentos florestais proximos a cidade de Londrina - PR. As caracteristicas estruturais dos fragmentos aqui consideradas incluem area, forma, area central e indice de area central; e as caracteristicas estruturais da paisagem: area da classe, tamanho medio e coeficiente de variacao do tamanho dos fragmentos de floresta, distância media ate o fragmento florestal mais proximo e total de bordas de floresta. A relacao entre composicao de especies, fragmentos florestais e indices de paisagem foi estudada atraves de Analise de Correspondencia Canonica. Os indices de maior importância foram: area, forma e area central dos fragmentos. Godoy, fragmento com 2371,14 ha e inclui o Parque Estadual Mata dos Godoy, apresentou maior variacao na composicao de especies quando comparado com os demais. The landscape as conditioning of edges of forest fragments Abstract Forests fragments differ in their spatial structure afecting the species composition of edges. The objective of this paper was to analyze the influence of some landscape index over sapling species composition in edges of forests fragments near Londrina - PR. The spatial structures of fragments considered in this paper involved area, shape, core area and core area index; and the spatial structures of landscape: class area, mean patch size, coefficient of variation of the size of the patch (%), mean nearest neighbor distance and total edge of forest. The relationship between sapling species composition, forests fragments and landscape index were evaluated through Principal Components Analysis. Godoy, fragment with 2371,14 ha showed more variation in the species composition when compared with other fragments.

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