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Keywords:

  • ecological niche model;
  • genetic algorithm for rule-set prediction;
  • Phytophthora ramorum;
  • sudden oak death

Ecological niche modelling techniques were applied to address the questions of the origins and potential geographic extent of sudden oak death, caused by the pathogen Phytophthora ramorum. Based on an ecological niche model derived from the phytopathogen's California distribution and distributions of potential host species, it was determined that the disease has high potential to colonize the southeastern United States, and that its likely source area is eastern Asia.