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handle: 10400.3/734
Uma breve caracterização da flora vascular da ilha do Pico é feita a partir da análise do seu catálogo de plantas vasculares (Pereira et al., 2006). A flora vascular Picoense fora de cultivo compreende no momento 642 unidades taxonómicas diferentes (taxa) representadas por 634 espécies, 375 géneros e 118 famílias. O número de taxa introduzidos representa 70,5% do total dos taxa presentes, enquanto a percentagem de taxa nativos se cifra apenas pelos 26,0%. No entanto 43,1% dos taxa nativos que ocorrem no Pico são endémicos dos Açores ou da Macaronésia. A distribuição das espécies nos grandes grupos taxonómicos (Pteridophyta, Gymnospermae, Dicotyledoneae e Monocotyledoneae) difere com significado estatístico entre as espécies nativas e introduzidas. A contribuição das espécies introduzidas é maior a nível das dicotiledóneas e menor a nível dos pteridófitos quando comparada com a distribuição das espécies nativas.
ABSTRACT: A short characterization of the vascular flora of Pico Island is made from the analysis of it’s checklist of vascular plants (Pereira et al., 2006). The flora of Pico Island is at the moment represented by 642 different taxa, 634 species, 375 genera and 118 families. The number of introduced species represents 70,5% of the total species while the native species correspond only to 26,2 %. About 43,1% of the native taxa are endemic to Azores or Macaronesia. The species distribution on the main taxonomic groups (Pteridophyta, Gymnospermae, Dicotyledoneae e Monocotyledoneae) is significantly different between native and introduced species. The contribution of introduced species is superior in the Dicotyledoneae and inferior in the Pteridophyta when compared with the native species.
Flora Vascular, Unidades Taxonómicas, Ilha do Pico (Açores)
Flora Vascular, Unidades Taxonómicas, Ilha do Pico (Açores)
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