disserthais 1 - Repositórios Digitais da UFSC - Universidade ...

ABSTRACT
The "Parque Municipal das Dunas da Lagoa da Conceição" is located in Florianópolis, south
Brazil, in the eastern coast of the Santa Catarina Island, and presents an area of 500 ha of
“restinga” with herbaceous-subshrubby, shrubby, and arboreous vegetation. Our objective
was to characterize the floristic composition and the phenological reproductive features of the
species of vascular plants in an area of ca. 250 ha of this Park, as well as, to verify the
distribution of the species among the different habitats found. The studied area was surveyed
monthly between January 2004 and August 2005. We identified 326 species belonging to 213
genera and 84 families. The richest families were Asteraceae (58 species), Poaceae (40),
Cyperaceae (29), Fabaceae sensu lato (21), Myrtaceae (10), Bromeliaceae (8), and
Orchidaceae (8). Baccharis (with 13 species), Cyperus (9), Panicum (7), Paspalum (7),
Eleocharis (6), Rhynchospora (6), and Utricularia (6) were the richest genera. Eight kinds of
habitat were identified in the area: beach, frontal dune, internal moving dunes, internal
semifixed dunes, internal fixed dunes, dry slacks, humid slacks, and flooded slacks. The
highest number of species with flowers was registered in December of 2004 and the lowest
number was registered in July of the same year. In February 2005 there was the highest
number of species with fruits while the lowest number was observed in July 2004. The
highest number of species with flowers and fruits found during the summer suggests that this
season is favorable to flowering and fruiting due to high temperature and precipitation as well
as the length of the photoperiod. The results show an expressive species richness when
compared with data obtained in other studies in “restingas” of the southern and southeastern
Brazil.
4