SANTOS, M. V.; SANTOS, Marinalva Valdevino dos.
Résumé:
Islands of vegetation were studied in a Inselberg in the town of Patos , Paraiba
backwoods mesoregion called saw Peter Augustine ( 7 ° 4 ' 14.0 " S and 37 ° 13' 57.7 "
W ) . The islands of vegetation were assumed for this work as vegetable grouping of
one or more species of vascular plants delimited by a surface of rock. The aim of this
study was to catalog the floristic and structural diversity of islands of vegetation and
verify the relationship area and species richness of the vegetation islands. The study
sample included 12 parcels and 168 vegetation islands of different sizes along a strand
of Inselberg . 22 vascular plant species, distributed in 12 families were recorded. The
floristic diversity presented Fabaceae richest family Apocynaceae and five species,
Bromeliaceae Burseraceae , Cactaceae , Euphorbiacea , Malvaceae , Molluginaceae,
Poacea , Rubiaceae , Cyperaceae Velloziaceae and with one or two species each . The
possible relationship between area and species richness of vegetation islands was tested
using the Spearman correlation with the PAST software tools, this analysis showed that
larger islands have more species. In the islands of vegetation, distinct assemblages
found in different altitudinal zones. The study found that outcrops act as a refuge of
endemic, pioneering and enabling plants, besides hosting animal species.
