• Progression of Ash Dieback in Norway Related to Tree Age, Disease History and Regional Aspects 

      Timmermann, Volkmar; Nagy, Nina Elisabeth; Hietala, Ari Mikko; Børja, Isabella; Solheim, Halvor (Journal article; Peer reviewed, 2017)
      Ash dieback, caused by the ascomycete Hymenoscyphus fraxineus, has been spreading throughout Europe since the early 1990s, threatening European ash at a continental scale. Little is known about the development of the disease ...
    • Spread of Ash Dieback in Norway 

      Solheim, Halvor; Hietala, Ari Mikko (Journal article; Peer reviewed, 2017-08-01)
      Ash dieback, caused by the ascomycete Hymenoscyphus fraxineus, was first observed in the eastern and southernmost Norway in 2008. Based on the age of stem bark lesions, it was concluded that the fungus had arrived to the ...