Florística de trepadeiras numa floresta estacional semidecídua, Rio Claro - Araras, Estado de São Paulo, Brasil
Carregando...
Data
2004-03-01
Autores
Udulutsch, Renata G. [UNESP]
Assis, Marco A. [UNESP]
Picchi, Douglas G. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Botânica de São Paulo
Resumo
Visando caracterizar a composição florística de trepadeiras nas florestas estacionais semidecíduas, foi realizado o levantamento das espécies num fragmento de 230 ha, abrangido pelos municípios de Rio Claro e Araras (22º21'S e 47º28' - 47º29'W, 630 m de altitude). As coletas foram mensais durante o período de setembro de 2000 a abril de 2002, sendo as trepadeiras classificadas como herbáceas ou lenhosas e quanto às suas formas de escalar; em volúveis, com gavinhas ou não preensoras. Foram encontradas 148 espécies, distribuídas em 82 gêneros e 33 famílias. Bignoniaceae (29 espécies), Asteraceae (19), Sapindaceae (12), Malpighiaceae (11) e Convolvulaceae (nove) foram as famílias mais ricas, abrangendo 54% das espécies amostradas. Bignoniaceae apresentou o maior número de espécies e gêneros (16), corroborando outros relatos de que é a família mais rica em trepadeiras nas florestas estacionais semidecíduas e na maioria dos estudos realizados em florestas neotropicais de baixas altitudes. Como em outros estudos realizados em florestas estacionais semidecíduas, as trepadeiras lenhosas representaram aproximadamente 2/3 da riqueza desse componente. Verificou-se a prevalência das espécies volúveis (43%) e das espécies dotadas de gavinhas (39%) em relação às espécies não preensoras (18%). Se, por um lado, a composição de espécies se mostrou bastante distinta em relação a outros estudos conduzidos em florestas estacionais semidecíduas no Estado de São Paulo, as famílias e gêneros mais ricos em espécies são, em grande parte, concordantes.
This study aimed at characterizing the composition of climbers within a 230 ha fragment in Seasonal Semi-deciduous Forest located between the municipalities of Rio Claro and Araras (22º21'S and 47º28' - 47º29'W, 630 m of altitude). Samples were collected monthly from September/2000 to April/2002, and the climbers were classified into two different groups (herbaceous vines or woody lianas); and according to their climbing patterns they were divided into twines, with tendrils, or scandent. A total of 148 species, distributed in 82 genera and 33 families were identified. Bignoniaceae (29 species), Asteraceae (19), Sapindaceae (12), Malpighiaceae (11), and Convolvulaceae (nine) were the richest families, with 54% of total species. Bignoniaceae presented the greatest number of species, and genera (16) confirming reports that it is the richest climbers family in the Seasonal Semi-deciduous Forest, as it has previously been stated by studies carried out in lowland neotropical forests. Like in other studies carried out in Seasonal Semi-deciduous Forests, woody climbers stood for approximately 2/3 of the diversity of all climbers. It was possible to record the predominance of both twining species (43%) and those with tendrils (39%) over the scandent species (18%). Although the composition of species may be quite distinct, the richest families and genera identified in this study are often identified as having the same relevance in previous studies conducted in Seasonal Semi-deciduous Forest in the state of São Paulo.
This study aimed at characterizing the composition of climbers within a 230 ha fragment in Seasonal Semi-deciduous Forest located between the municipalities of Rio Claro and Araras (22º21'S and 47º28' - 47º29'W, 630 m of altitude). Samples were collected monthly from September/2000 to April/2002, and the climbers were classified into two different groups (herbaceous vines or woody lianas); and according to their climbing patterns they were divided into twines, with tendrils, or scandent. A total of 148 species, distributed in 82 genera and 33 families were identified. Bignoniaceae (29 species), Asteraceae (19), Sapindaceae (12), Malpighiaceae (11), and Convolvulaceae (nine) were the richest families, with 54% of total species. Bignoniaceae presented the greatest number of species, and genera (16) confirming reports that it is the richest climbers family in the Seasonal Semi-deciduous Forest, as it has previously been stated by studies carried out in lowland neotropical forests. Like in other studies carried out in Seasonal Semi-deciduous Forests, woody climbers stood for approximately 2/3 of the diversity of all climbers. It was possible to record the predominance of both twining species (43%) and those with tendrils (39%) over the scandent species (18%). Although the composition of species may be quite distinct, the richest families and genera identified in this study are often identified as having the same relevance in previous studies conducted in Seasonal Semi-deciduous Forest in the state of São Paulo.
Descrição
Palavras-chave
floresta semidecídua, floresta tropical, florística, lianas, trepadeiras, climbers, floristic, lianas, semi-deciduous forest, tropical forest
Como citar
Brazilian Journal of Botany. Sociedade Botânica de São Paulo, v. 27, n. 1, p. 125-134, 2004.