SciELO - Scientific Electronic Library Online

 
vol.36 número1Historia de incendios en un bosque de pino de la sierra de Manantlán, Jalisco, MéxicoEficiencia de conversión de la radiación fotosintéticamente activa interceptada en biomasa en rodales de acacia negra en Brasil índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Bosque (Valdivia)

versión On-line ISSN 0717-9200

Resumen

COBAR-CARRANZA, Ana J; GARCIA, Rafael A; PAUCHARD, Aníbal  y  PENA, Eduardo. Effects of high temperatures in the germination and seed survival of the invasive species Pinus contorta and two native species of South Chile. Bosque (Valdivia) [online]. 2015, vol.36, n.1, pp.53-60. ISSN 0717-9200.  http://dx.doi.org/10.4067/S0717-92002015000100006.

Studies in South America have reported increments of invasivity of Pinus spp. after fire events. These increments are due to morphological and physiological adaptations to wildfires that some species of this specific genus presents. Pinus contorta is an invasive species in temperate ecosystems, affecting Araucaria araucana and Nothofagus antarctica forests in Malalcahuello National Reserve, Chile. In order to comprehend the regeneration response to post-fire, it is necessary to know the response and tolerance of the seeds to high temperatures. Seeds of P. contorta, A. araucana and N. antarctica were sown in pots with sand and subsequently heated at 80, 100 and 120 °C for five minutes. Germination and seedling survival tests were carried out in a greenhouse. Germination in N. antarctica was null. Heat treatments did not have a negative effect on the germination of P. contorta, but they did on A. araucana inhibiting the germination at temperatures over 100 °C. These results suggest that when undergoing a fire of high intensity, P. contorta has a competitive advantage over A. araucana and N. antarctica; the seed bank would have more possibilities to survive the effects of a wildfire.

Palabras clave : Araucaria araucana; Nothofagus antarctica; wildfire; fire ecology; heat shock.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons