Data/hora: 16/06/2024 13:15:23

Provedor de dados: 	Acta Botanica Brasilica	
País: 	Brazil	
Título: 	Life-forms, pollination and seed dispersal syndromes in plant communities on ironstone outcrops, SE Brazil	
Autores: 	Jacobi,Claudia Maria; Carmo,Flávio Fonseca do.	
Data: 	2011-06-01	
Ano: 	2011	
Palavras-chave: 	Biological spectrum; Cangas; Conservation; Geoedaphic conditions; Rock outcrops.	
Resumo: 	Rock outcrops play an important role in enhancing plant diversity in montane ecosystems. Ironstone outcrops (cangas) are among the lithotypes less known and most threatened in SE Brazil, due to mining activities. Besides species composition, a key feature to promote their conservation and restoration is the knowledge of the community prevalent life-forms, pollination and seed dispersal syndromes. The analyses were done based on published floristic surveys of cangas in SE Brazil. A total of 353 species of angiosperms (70 families) were assigned to one of the two predominant physiognomies (open areas and forest islands) on ironstone outcrops. Sixteen families responded for 70% of all species. Compared to Raunkiaer's spectrum, phanerophytes were over- and therophytes were under-represented. Phanerophytes were the predominant life-form in forest islands, while hemicryptophytes were outstanding in open areas. Entomophily was the dominant pollination syndrome in both habitats. Zoochory was dominant in forest islands and ranked last in open areas, where anemochory and autochory prevailed. Considering that both forest islands and open areas are subjected to the same climatic conditions, the results corroborate the influence of geoedaphic components in the three traits analysed.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000200016	
Editor: 	Sociedade Botânica do Brasil	
Relação: 	10.1590/S0102-33062011000200016	
Formato: 	text/html	
Fonte: 	Acta Botanica Brasilica  v.25 n.2 2011	
Fonte: 	info:eu-repo/semantics/openAccess