Data/hora: 17/06/2024 07:49:53

Provedor de dados: 	39	
País: 	Brazil	
Título: 	The seed bank of subtropical grasslands with contrasting land-use history in southern Brazil	
Autores: 	Vieira,Mariana de Souza; Bonilha,Camila Leal; Boldrini,Ilsi Iob; Overbeck,Gerhard Ernst.	
Data: 	2015-12-01	
Ano: 	2015	
Palavras-chave: 	Campos Sulinos; Disturbance; Land use; Persistent seed bank; Recovery; Transient seed bank.	
Resumo: 	The expansion of land use for agriculture is among the main reasons for the reduction of natural grasslands around the world, and little is known about the recovery potential of original native grassland vegetation from seed banks. The aim of this study was to assess the seed bank potential of grassland areas with or without history of cultivation in southern Brazil. Specifically, we aimed at evaluating if agricultural use allowed for the persistence of species typical of natural grasslands in soil seed banks. We analyzed seed banks in two areas with a history of cultivation and in two natural grasslands. Samples were collected in spring and autumn in order to assess transient and persistent components, and were characterized by density, richness, presence of exotic species and relationship between seed bank and established vegetation. Both richness and density were high; we found a total of 114 species and a mean density of 61,796 seedlings/m2 for all four areas in the spring sampling. In the natural grasslands, the dominant species of established vegetation were mostly absent from the soil seed bank. Our study indicates that the seed bank is of little relevance for the recovery of typical grassland vegetation after disturbance.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000400543	
Editor: 	Sociedade Botânica do Brasil	
Relação: 	10.1590/0102-33062015abb0026	
Formato: 	text/html	
Fonte: 	Acta Botanica Brasilica  v.29 n.4 2015	
Fonte: 	info:eu-repo/semantics/openAccess