Catálogo CEIBA de la Biblioteca Central de FAUBA


Vista normal Vista MARC Vista ISBD

Effects of fire and water availability on the emergence and recruitment of grasses, forbs and woody species in a semiarid Chaco savanna

Por: Casillo, J.
Colaborador(es): Kunst, C | Semmartin, M.
ISSN: 1442-9985.Tipo de material: Artículos y capítulos. Recurso electrónico.Tema(s): BURNING | PLANT FUNCTIONAL GROUP | RANGE MANAGEMENT | SHRUBLAND | WATER ADDITION | BURNING | ECOSYSTEM SERVICE | EXPERIMENTAL STUDY | FIRE BEHAVIOR | FORAGE | FUNCTIONAL GROUP | GRASS | HERB | LANDSCAPE STRUCTURE | PLANT COMMUNITY | RANGELAND | RECRUITMENT [POPULATION DYNAMICS] | REGENERATION | SAVANNA | SEMIARID REGION | SHRUBLAND | WATER AVAILABILITY | WOODY PLANT | GRAN CHACO | POACEAE | Recursos en línea: Haga clic para acceso en línea | LINK AL EDITOR. En: Austral Ecology Vol. 37, no. 4 (2012) 452-459Resumen: In the semiarid Chaco savannas, the balance between herbaceous and woody species affects landscape configuration and ecosystem services such as forage production. Therefore, understanding the factors that control this balance is crucial for management. In a factorial experiment, we assessed the effects of fire and water availability on the emergence and recruitment of grasses, forbs and woody species. The results showed that the effects of fire and water availability on early regeneration stages differed among the three functional groups. For grasses, fire and water addition enhanced emergence when acted solely, but only the positive effects of fire were translated into a greater recruitment, irrespective of the water availability. For forbs, only water addition, when acted solely, promoted the emergence, although this effect was not translated into a greater recruitment. Lastly, in the case of woody species, both fire and water addition reduced emergence and recruitment. Our results support the notion that both fire and greater water availability would contribute to the maintenance and recovery of a grass-dominated state of vegetation through a positive effect of fire on grasses recruitment and a general negative effect of fire and water on woody species emergence and recruitment.
Etiquetas de esta biblioteca: No hay etiquetas de esta biblioteca para este título. Ingresar para agregar etiquetas.
    valoración media: 0.0 (0 votos)

In the semiarid Chaco savannas, the balance between herbaceous and woody species affects landscape configuration and ecosystem services such as forage production. Therefore, understanding the factors that control this balance is crucial for management. In a factorial experiment, we assessed the effects of fire and water availability on the emergence and recruitment of grasses, forbs and woody species. The results showed that the effects of fire and water availability on early regeneration stages differed among the three functional groups. For grasses, fire and water addition enhanced emergence when acted solely, but only the positive effects of fire were translated into a greater recruitment, irrespective of the water availability. For forbs, only water addition, when acted solely, promoted the emergence, although this effect was not translated into a greater recruitment. Lastly, in the case of woody species, both fire and water addition reduced emergence and recruitment. Our results support the notion that both fire and greater water availability would contribute to the maintenance and recovery of a grass-dominated state of vegetation through a positive effect of fire on grasses recruitment and a general negative effect of fire and water on woody species emergence and recruitment.

No hay comentarios para este ítem.

Ingresar a su cuenta para colocar un comentario.

Av. San Martín 4453 - 1417 – CABA – Argentina.
Sala de lectura de Planta Baja: bibliote@agro.uba.ar (54 11) 5287-0013
Referencia: referen@agro.uba.ar (54 11) 5287-0418
Hemeroteca: hemerote@agro.uba.ar (54 11) 5287-0218