Data/hora: 14/06/2024 15:37:53

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	08/03/1999	
Data da última atualização: 	08/03/1999	
Autoria: 	HOBBS, R. J.; LEGG, C. J.	
Afiliação: 	Department of Botany, University of Aberdeen, Scotland. Department of Biological Sciences, University of Exeter, Hatherly Laboratories, Prince of Wales Road. Exeter, U.K.	
Título: 	Markov models and initial floristic composition in heathland vegetation dynamics.	
Ano de publicação: 	1983	
Fonte/Imprenta: 	Vegetatio, v.56, n.1, p.31-43, 1983.	
Idioma: 	Inglês	
Conteúdo: 	A simple Markov model is used to test the hypothesis that the floristic composition of vegetation colonizing bare ground immediately after burning is the major factor influencing post-fire development in heathland vegetation. Data are taken from stands of different ages at time of burning in a species-rich Calluna-Arctostaphylos heath in NE Scotland. It is shown that variation in the initial floristic composition of the stands is not, in itself, sufficient to produce model simulations which match observed trends, although altering the probabilities of transition from bare ground to other states allows more successful simulations. The model supports the hypothesis that stand age before burning influences the post-fire development through the process of colonization of bare ground. After a very severe fire- post-fire development may initially depend on the formation of a most cover, although this requires further study. It is concluded that simple Markov models can provide the basis for examining successional process when used in a comparative way. 	
Palavras-Chave: 	Colonization; Heathland vegetation; Inicial floristica; Initial floristics; Markov models; Modelo de Markov; Post-fire succession; Severe fire; Terra de brejo.	
Thesagro: 	Colonização; Fogo; Vegetação.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (37046-1) - ADD - SP - -- - SP3813 -  - 3813 - DIS