Blar i Vitenskapelige artikler på forfatter "Hietala, Ari Mikko"

Viser treff 1-18 av 18

    • An analysis of stand-level size distributions of decay-affected Norway spruce trees based on harvester data 

      Räty, Janne; Hietala, Ari Mikko; Breidenbach, Johannes; Astrup, Rasmus Andreas (Peer reviewed; Journal article, 2023-01-05)
      We studied size distributions of decay-affected Norway spruce trees using cut-to-length harvester data. The harvester data comprised tree-level decay and decay severity recordings from 101 final felling stands, which enabled ...

    • Biotic threats for 23 major non-native tree species in Europe 

      Pötzelsberger, Elisabeth; Gossner, Martin M.; Beenken, Ludwig; Gazda, Anna; Petr, Michal; Ylioja, Tiina; La Porta, Nicola; Avtzis, Dimitrios N.; Bay, Elodie; De Groot, Maarten; Drenkhan, Rein; Duduman, Mihai-Leonard; Enderle, Rasmus; Georgieva, Margarita; Hietala, Ari Mikko; Hoppe, Björn; Jactel, Herve; Jarni, Kristjan; Keren, Srđan; Keseru, Zsolt; Koprowski, Marcin; Kormuťák, Andrej; Lombardero, María Josefa; Lukjanova, Aljona; Marozas, Vitas; Mauri, Edurad; Monteverdi, Maria Cristina; Nygaard, Per Holm; Ogris, Nikica; Olenici, Nicolai; Orazio, Christophe; Perny, Bernhard; Pinto, Glória; Power, Michael; Puchalka, Radoslaw; Ravn, Hans Peter; Sevillano, Ignacio; Stroheker, Sophie; Taylor, Paul; Tsopelas, Panagiotis; Urban, Josef; Voolma, Kaljo; Westergren, Marjana; Witzell, Johanna; Zborovska, Olga; Zlatkovic, Milica (Peer reviewed; Journal article, 2021-08-06)
      For non-native tree species with an origin outside of Europe a detailed compilation of enemy species including the severity of their attack is lacking up to now. We collected information on native and non-native species ...

    • Detection of Root, Butt, and Stem Rot presence in Norway spruce with hyperspectral imagery 

      Allen, Benjamin James; Dalponte, Michele; Hietala, Ari Mikko; Ørka, Hans Ole; Næsset, Erik; Gobakken, Terje (Peer reviewed; Journal article, 2022-02-16)
      Pathogenic wood decay fungi such as species of Heterobasidion are some of the most serious forest pathogens in Europe, causing rot of tree boles and loss of growth, with estimated economic losses of eight hundred million ...

    • Fungal diversity and seasonal succession in ash leaves infected by the invasive ascomycete Hymenoscyphus fraxineus 

      Cross, Hugh; Sønstebø, Jørn Henrik; Nagy, Nina Elisabeth; Timmermann, Volkmar; Solheim, Halvor; Børja, Isabella; Kauserud, Håvard; Carlsen, Tor; Rzepka, Barbara; Wasak, Katarzyna; Vivian-Smith, Adam; Hietala, Ari Mikko (Journal article; Peer reviewed, 2017-01-12)
      High biodiversity is regarded as a barrier against biological invasions. We hypothesized that the invasion success of the pathogenic ascomycete Hymenoscyphus fraxineus threatening common ash in Europe relates to differences ...

    • Fungal succession in decomposing ash leaves colonized by the ash dieback pathogen Hymenoscyphus fraxineus or its harmless relative Hymenoscyphus albidus 

      Kosawang, Chatchai; Børja, Isabella; Herrero, Maria-Luz; Nagy, Nina Elisabeth; Nielsen, Lene R.; Solheim, Halvor; Timmermann, Volkmar; Hietala, Ari Mikko (Peer reviewed; Journal article, 2023-04-14)
      Introduction: The ascomycete Hymenoscyphus fraxineus, originating from Asia, is currently threatening common ash (Fraxinus excelsior) in Europe, massive ascospore production from the saprotrophic phase being a key determinant ...

    • Host−Pathogen Interactions in Leaf Petioles of Common Ash and Manchurian Ash Infected with Hymenoscyphus fraxineus 

      Nielsen, Lene R.; Nagy, Nina Elisabeth; Piqueras, Sara; Kosawang, Chatchai; Thygesen, Lisbeth G.; Hietala, Ari Mikko (Peer reviewed; Journal article, 2022-02-05)
      Some common ash trees (Fraxinus excelsior) show tolerance towards shoot dieback caused by the invasive ascomycete Hymenoscyphus fraxineus. Leaf petioles are considered to serve as a pathogen colonization route to the shoots. ...

    • The invasive forest pathogen Hymenoscyphus fraxineus boosts mortality and triggers niche replacement of European ash (Fraxinus excelsior) 

      Díaz-Yáñez, Olalla; Mola-Yudego, Blas; Timmermann, Volkmar; Tollefsrud, Mari Mette; Hietala, Ari Mikko; Oliva, Jonas (Peer reviewed; Journal article, 2020-03-24)
      Determining the impacts of invasive pathogens on tree mortality and growth is a difficult task, in particular in the case of species occurring naturally at low frequencies in mixed stands. In this study, we quantify such ...

    • Invasive forest pathogens in Europe: Cross-country variation in public awareness but consistency in policy acceptability 

      Eriksson, Louise; Boberg, Johanna; Cech, Thomas L.; Corcobado, Tamara; Desprez-Loustau, Marie-Laure; Hietala, Ari Mikko; Jung, Marilia Horta; Jung, Thomas; Lehtijarvi, Hatice Tugba Dogmus; Oskay, Funda; Slavov, Slavtcho; Solheim, Halvor; Stenlid, Jan; Oliva, Jonas (Journal article; Peer reviewed, 2018-03-23)
      Political action can reduce introductions of diseases caused by invasive forest pathogens (IPs) and public support is important for effective prevention. The public’s awareness of IP problems and the acceptability of ...

    • Multiplex real-time PCR assays for the detection and identification of Heterobasidion species attacking conifers in Europe 

      Ioos, R.; Chrétien, P.; Perrault, J.; Jeandel, C.; Dutech, C.; Gonthier, P.; Sillo, F.; Hietala, Ari Mikko; Solheim, Halvor; Hubert, J. (Peer reviewed; Journal article, 2019-07-11)
      Four species of the destructive forest pathogen Heterobasidion annosum sensu lato (s.l.) are present in Europe: H. annosum sensu stricto (s.s.), H. abietinum and H. parviporum are native species, while H. irregulare is a ...

    • The Native Hymenoscyphus albidus and the Invasive Hymenoscyphus fraxineus Are Similar in Their Necrotrophic Growth Phase in Ash Leaves 

      Hietala, Ari Mikko; Agan, Ahto; Nagy, Nina Elisabeth; Børja, Isabella; Timmermann, Volkmar; Drenkhan, Rein; Solheim, Halvor (Peer reviewed; Journal article, 2022-05-27)
      The populations of European ash and its harmless fungal associate Hymenoscyphus albidus are in decline owing to ash dieback caused by the invasive Hymenoscyphus fraxineus, a fungus that in its native range in Asia is a ...

    • Patterns and roles of lignan and terpenoid accumulation in the reaction zone compartmentalizing pathogen-infected heartwood of Norway spruce 

      Nagy, Nina Elisabeth; Norli, Hans Ragnar; Fongen, Monica; Østby, Runa Berg; Heldal, Inger; Davik, Jahn; Hietala, Ari Mikko (Peer reviewed; Journal article, 2022-02-10)
      Tree defense against xylem pathogens involves both constitutive and induced phenylpropanoids and terpenoids. The induced defenses include compartmentalization of compromised wood with a reaction zone (RZ) characterized by ...

    • 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 ...

    • Propagule pressure build-up by the invasive Hymenoscyphus fraxineus following its introduction to an ash forest inhabited by the native Hymenoscyphus albidus. 

      Hietala, Ari Mikko; Børja, Isabella; Solheim, Halvor; Nagy, Nina Elisabeth; Timmermann, Volkmar (Journal article; Peer reviewed, 2018-07-30)
      Dieback of European ash, caused by the ascomycete Hymenoscyphus fraxineus originating from Asia, has rapidly spread across Europe, and is threatening this keystone tree at a continental scale. High propagule pressure is ...

    • The Relationship between Fungal Diversity and Invasibility of a Foliar Niche—The Case of Ash Dieback 

      Agan, Ahto; Drenkhan, Rein; Adamson, Kalev; Tedersoo, Leho; Solheim, Halvor; Børja, Isabella; Matsiakh, Iryna; Timmermann, Volkmar; Nagy, Nina Elisabeth; Hietala, Ari Mikko (Peer reviewed; Journal article, 2020-08-26)
      European ash (Fraxinus excelsior) is threatened by the invasive ascomycete Hymenoscyphus fraxineus originating from Asia. Ash leaf tissues serve as a route for shoot infection but also as a sporulation substrate for this ...

    • Seasonal Dynamics of Fungi Associated with Healthy and Diseased Pinus sylvestris Needles in Northern Europe 

      Agan, Ahto; Solheim, Halvor; Adamson, Kalev; Hietala, Ari Mikko; Tedersoo, Leho; Drenkhan, Rein (Peer reviewed; Journal article, 2021-08-17)
      The relationship between the ecological success of needle pathogens of forest trees and species richness of co-inhabiting endophytic fungi is poorly understood. One of the most dangerous foliar pathogens of pine is Dothistroma ...

    • Species selection in areas subjected to risk of root and butt rot: applying Precision forestry in Norway 

      Ferreira Aza, Ana Claudia; Kallio, Maarit; Pukkala, Timo; Hietala, Ari Mikko; Gobakken, Terje; Astrup, Rasmus Andreas (Peer reviewed; Journal article, 2022-09-13)
      Norway’s most common tree species, Picea abies (L.) Karst. (Norway spruce), is often infected with Heterobasidion parviporum Niemelä & Korhonen and Heterobasidion annosum (Fr.) Bref.. Because Pinus sylvestris L. (Scots ...

    • 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 ...

    • The ash dieback invasion of Europe was founded by two genetically divergent individuals 

      McMullan, Mark; Rafiqi, Maryam; Kaithakottil, Gemy; Clavijo, Bernardo J; Bilham, Lorelei; Orton, Elizabeth; Percival-Alwyn, Lawrence; Ward, Ben J; Edwards, Anne; Saunders, Diane GO; Accinelli, Gonzalo Garcia; Wright, Jonathan; Verweij, Walter; Koutsovoulos, Georgios; Yoshida, Kentaro; Hosoya, Tsuyoshi; Williamson, Louisa; Jennings, Philip; Ioos, Renaud; Husson, Claude; Hietala, Ari Mikko; Vivian-Smith, Adam; Solheim, Halvor; MaClean, Dan; Fosker, Christine; Hall, Neil; Brown, James KM; Swarbreck, David; Blaxter, Mark; Downie, J Allan; Clark, Matthew D (Journal article; Peer reviewed, 2018-04-23)
      Accelerating international trade and climate change make pathogen spread an increasing concern. Hymenoscyphus fraxineus, the causal agent of ash dieback, is a fungal pathogen that has been moving across continents and hosts ...