Predicting pathogen induced mortality in hakea sericea proteaceae an aggressive alien plant invader in south africa

Richardson, D.M.; Manders, P.T.

Annals of Applied Biology 106(2): 243-254

1985


ISSN/ISBN: 0003-4746
DOI: 10.1111/j.1744-7348.1985.tb03114.x
Accession: 006163579

Download citation:  
Text
  |  
BibTeX
  |  
RIS

Article/Abstract emailed within 0-6 h
Payments are secure & encrypted
Powered by Stripe
Powered by PayPal

Abstract
The woody shrub Hakea sericea is an aggressive invader of natural vegetation in South Africa. Large-scale die-back in H. sericea is attributed to a form of the fungus Colletotrichum gloeosporioides. The progression of symptoms of the disease was monitored over 21 months. Results were used to construct a transition matrix model to predict further progression of the disease. Eighty-two percent mortality is predicted after 10 years. Pathogen-induced seed release occurred mainly between October and January. No regeneration was observed beneath or near infected stands of H. sericea. The model will be useful to managers when identifying priority areas for weed control operations.

Predicting pathogen induced mortality in hakea sericea proteaceae an aggressive alien plant invader in south africa