Data/hora: 02/06/2024 10:35:24

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	25/04/1995	
Data da última atualização: 	04/04/2017	
Autoria: 	YOUNG, R. P.; MILLER, R. F.	
Título: 	Response of sitanion hystrix (Nutt.) J.G. to prescribed burning.	
Ano de publicação: 	1985	
Fonte/Imprenta: 	American Midland Naturalist, v.113, n.1, p.182-187, 1985.	
Idioma: 	Inglês	
Conteúdo: 	This study reports the response of Sitanion hystrix (Nutt.) J.G. to a mid-summer controlled burn. Vegetative, reprodutive and physiological attributes of control and burned plants were evaluated in the year following treatment using yield per unit of active crown area. Burned plants responded positively to fire for all parameters measured; (1) shoot biomass -.52 vs. .09 g.cm-2 (burn vs. control); (2) root biomass - .36 vs. .24 g.cm-2; (3) inflorescence biomass - 26vs. .02 g.cm-2; (4) total shoot density - 2.87 vs. 1.95 shoots.cm-2; (5) reproductive shoot density - 2.14 vs. .28 shoots .cm-2; and (6) total nonstructural carbohydrate of roots and crowns - 6.66 vs. 5.29 g.cm-2. The results contradict previous reports which indicate a period of 1 to several years before preburn levels of annual production are regained. Direct effects of fire on quiescent bunchgrasses result from heat danage of crown meristematic tissue and subsequent reduction of active crown area. However, crown area of marked Sitation plants was unchanged as a result of burning. Indirect effects of fire derive from alteration of the effective environment of treated plants. Grown of Sitanion appears to be related to fire-indiced changes in the physical environment and competitive relations within the annual plant-dominated community.	
Palavras-Chave: 	Efeito; Effect; Fire; Plant.	
Thesagro: 	Fogo; Planta; Queimada.	
Thesaurus Nal: 	burning.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (27944-1) - ADC - SP - PP - SP14232 -  - 14232 - DIS