Blar i Divisjon for bioteknologi og plantehelse på forfatter "Solheim, Halvor"

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    • Alien plants, animals, fungi and algae in Norway: an inventory of neobiota 

      Sandvik, Hanno; Dolmen, Dag; Elven, Reidar; Falkenhaug, Tone; Forsgren, Elisabet; Hansen, Haakon; Hassel, Kristian; Husa, Vivian; Kjærstad, Gaute; Ødegaard, Frode; Pedersen, Hans Christian; Solheim, Halvor; Stokke, Bård Gunnar; Åsen, Per Arvid; Åström, Sandra Charlotte Helene; Brandrud, Tor Erik; Elven, Hallvard; Endrestøl, Anders; Finstad, Anders Gravbrøt; Fredriksen, Stein; Gammelmo, Øivind; Gjershaug, Jan Ove; Gulliksen, Bjørn; Hamnes, Inger Sofie; Hatteland, Bjørn Arild; Hegre, Hanne; Hesthagen, Trygve H.; Jelmert, Anders; Jensen, Thomas Correll; Johnsen, Stein Ivar; Karlsbakk, Egil; Magnusson, Christer; Nedreaas, Kjell Harald; Nordén, Björn; Oug, Eivind; Pedersen, Oddvar; Pedersen, Per Anker; Sjøtun, Kjersti; Skei, Jon Kristian; Solstad, Heidi; Sundheim, Leif; Swenson, Jon; Syvertsen, Per Ole; Talgø, Venche; Vandvik, Vigdis; Westergaard, Kristine Bakke; Wienerroither, Rupert; Ytrehus, Bjørnar; Hilmo, Olga; Henriksen, Snorre; Gederaas, Lisbeth (Journal article; Peer reviewed, 2019-08-03)
      We present the results of an inventory and status assessment of alien species in Norway. The inventory covered all known multicellular neobiota, 2496 in total, 1039 of which were classified as naturalised. The latter ...

    • Alien species in Norway: results from quantitative ecological impact assessments 

      Sandvik, Hanno; Hilmo, Olga; Henriksen, Snorre; Elven, Reidar; Åsen, Per Arvid; Hegre, Hanne; Pedersen, Oddvar; Pedersen, Per Anker; Solstad, Heidi; Vandvik, Vigdis; Westergaard, Kristine Bakke; Ødegaard, Frode; Åström, Sandra Charlotte Helene; Elven, Hallvard; Endrestøl, Anders; Gammelmo, Øivind; Hatteland, Bjørn Arild; Solheim, Halvor; Nordén, Björn; Sundheim, Leif; Talgø, Venche; Falkenhaug, Tone; Gulliksen, Bjørn; Jelmert, Anders; Oug, Eivind; Sundet, Jan Henry; Forsgren, Elisabet; Finstad, Anders Gravbrøt; Hesthagen, Trygve H.; Nedreaas, Kjell Harald; Wienerroither, Rupert; Husa, Vivian; Fredriksen, Stein; Sjøtun, Kjersti; Steen, Henning; Hansen, Haakon; Hamnes, Inger Sofie; Karlsbakk, Egil; Magnusson, Christer; Ytrehus, Bjørnar; Pedersen, Hans Christian; Swenson, Jon; Syvertsen, Per Ole; Stokke, Bård Gunnar; Gjershaug, Jan Ove; Dolmen, Dag; Kjærstad, Gaute; Johnsen, Stein Ivar; Jensen, Thomas Correll; Hassel, Kristian; Gederaas, Lisbeth (Journal article, 2020)
      1. Due to globalisation, trade and transport, the spread of alien species is increasing dramatically. Some alien species become ecologically harmful by threatening native biota. This can lead to irreversible changes in ...

    • Askeskuddsjuke, årsak og biologi 

      Solheim, Halvor; Børja, Isabella; Nagy, Nina; Timmermann, Volkmar; Hietala, Ari (NIBIO POP;3(2) 2017, Others, 2017-02)
      Askeskuddsjuke forårsakes av en liten sopp, Hymenoscyphus fraxineus, på norsk kalt askeskuddbeger. Sjukdommen har i løpet av kort tid spredd seg over store deler av Europas askeskoger. Soppen er en fremmed art som trolig ...

    • Ceratocystiopsis spp. associated with pine- and spruce-infesting bark beetles in Norway 

      Jankowiak, Robert; Solheim, Halvor; Bilański, Piotr; Mukhopadhyay, Jigeesha; Hausner, Georg (Peer reviewed; Journal article, 2022-06-04)
      The genus Ceratocystiopsis (Ophiostomatales, Ascomycota) includes 21 species, which can be found mainly in association with bark beetles in the Northern Hemisphere. A survey of Ceratocystiopsis species associated with bark ...

    • Forvaltning av ask i møte med askeskuddsjuken 

      Tollefsrud, Mari Mette; Timmermann, Volkmar; Schei, Fride Høistad; Solheim, Halvor (NIBIO POP;3(6) 2017, Others, 2017-02)
      Ask er et av våre vanligste edellauvtrær og et viktig levested for mange arter. Ask er mye brukt som prydtre og har vært vanlig både som tuntre og i alleer. Gamle styvede asketrær representerer mange steder viktige ...

    • Fungal Planet description sheets: 1436–1477 

      Tan, Y. P.; Bishop-Hurley, S. L.; Shivas, R. G.; Cowan, D.A.; Maggs-Kölling, G.; Maharachchikumbura, Sajeewa S.N.; Pinruan, U.; Bransgrove, K.L.; De la Peña-Lastra, S.; Larsson, E.; Lebel, T.; Mahadevakumar, S.; Mateos, A.; Osieck, E. R.; Rigueiro-Rodríguez, A.; Sommai, S.; Ajithkumar, K.; Akulov, A.; Anderson, F. E.; Arenas, F.; Balashov, S.; Bañares, Á.; Berger, D.K.; Bianchinotti, M.V.; Bien, S.; Bilański, P.; Boxshall, A. G.; Bradshaw, M.; Broadbridge, J.; Calaça, F.J.S.; Campos-Quiroz, C.; Carrasco-Fernández, J.; Castro, J.F.; Chaimongkol, S.; Chandranayaka, S.; Chen, Y.; Comben, D.; Dearnaley, J.D.W.; Ferreira-Sá, A.S.; Dhileepan, K.; Diaz, M.L.; Divakar, P.K.; Xavier-Santos, S.; Fernández-Bravo, A.; Gené, J.; Guard, F.E.; Guerra, M.; Gunaseelan, S.; Houbraken, J.; Janik-Superson, K.; Jankowiak, R.; Jeppson, M.; Jurjević, Ž.; Kaliyaperumal, M.; Kelly, L.A.; Kezo, K.; Khalid, A.N.; Khamsuntorn, P.; Kidanemariam, D.; Kiran, M.; Lacey, E.; Langer, G.J.; López-Llorca, L.V.; Luangsa-ard, J. J.; Lueangjaroenkit, P.; Lumbsch, H.T.; Maciá-Vicente, J. G.; Mamatha Bhanu, L.S.; Marney, T.S.; Marqués-Gálvez, J.E.; Morte, A.; Naseer, A.; Navarro-Ródenas, A.; Oyedele, O.; Peters, S.; Piskorski, S.; Quijada, L.; Ramírez, G.H.; Raja, K.; Razzaq, A.; Rico, V.J.; Rodríguez, A.; Ruszkiewicz-Michalska, M.; Sánchez, R.M.; Santelices, C.; Savitha, A.S.; Serrano, M.; Leonardo-Silva, L.; Solheim, Halvor; Somrithipol, S.; Sreenivasa, M.Y.; Stępniewska, H.; Strapagiel, D.; Taylor, T.; Torres-Garcia, D.; Vauras, J.; Villarreal, M.; Visagie, C.M; Wołkowycki, M.; Yingkunchao, W.; Zapora, E.; Groenewald, J.Z.; Crous, P.W. (Peer reviewed; Journal article, 2022-12)
      Novel species of fungi described in this study include those from various countries as follows: Argentina, Colletotrichum araujiae on leaves, stems and fruits of Araujia hortorum. Australia, Agaricus pateritonsus on soil, ...

    • 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 ...

    • Helikoptertopping og -kvisting av trær langs kraftlinjer 

      Solberg, Svein; Solheim, Halvor; Bergseng, Even; Innes, Harold Mc (Journal article, 2018-06)
      Kapping og beskjæring av tretopper langs kraftlinjer med sag fra helikopter reduserer risikoen for trefall på kraftlinja og kan være et kostnadseffektivt tiltak med få ulemper for skogeier. Topping eller kvisting med ...

    • Highly Clonal Structure and Abundance of One Haplotype Characterise the Diplodia sapinea Populations in Europe and Western Asia 

      Adamson, Kalev; Laas, Marili; Blumenstein, Kathrin; Busskamp, Johanna; Langer, Gitta J.; Klavina, Darta; Kaur, Anu; Maaten, Tiit; Mullett, Martin S.; Müller, Michael M.; Ondrušková, Emília; Padari, Allar; Pilt, Enn; Riit, Taavi; Solheim, Halvor; Soonvald, Liina; Tedersoo, Leho; Terhonen, Eeva; Drenkhan, Rein (Peer reviewed; Journal article, 2021-08-04)
      Diplodia sapinea is a cosmopolitan endophyte and opportunistic pathogen having occurred on several conifer species in Europe for at least 200 years. In Europe, disease outbreaks have increased on several Pinus spp. in the ...

    • 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 ...

    • Priming of inducible defenses protects Norway spruce against tree-killing bark beetles 

      Mageroy, Melissa; Christiansen, Erik; Långström, Bo; Borg-Karlson, Anna-Karin; Solheim, Halvor; Björklund, Niklas; Zhao, Tao; Schmidt, Axel; Fossdal, Carl Gunnar; Krokene, Paal (Peer reviewed; Journal article, 2019-11-01)
      Plants can form an immunological memory known as defense priming, whereby exposure to a priming stimulus enables quicker or stronger response to subsequent attack by pests and pathogens. Such priming of inducible defenses ...

    • 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 ...

    • Råte i granskog: Det er store forskjeller i kjennskap til forekomst og kontrolltiltak innen norsk skogbruk 

      Hietala, Ari Mikko; Solheim, Halvor; Talbot, Bruce (NIBIO POP;2(28)2016, Others, 2016-09)
      Råte påfører norske skogeiere og skogbruket årlige tap estimert til rundt 100 mill. NOK (Solheim og Stamnes, upubl.). Basert på den siste nasjonale råteundersøkelsen i granskog (Huse m.fl. 1994), var det mest råte i granas ...

    • 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 ...

    • Risiko for import av fremmede arter og brudd på tømmerforordningen – trendanalyse av importstatistikk for tømmer og treprodukter 

      Økland, Bjørn; Børja, Isabella; Solheim, Halvor; Rahlf, Johannes; Fløistad, Inger (NIBIO Rapport;5(69) 2019, Research report, 2019)
      Hvert år importeres det store mengder av tømmer og treprodukter til Norge fra ulike land og verdensdeler. Uten tilstrekkelig årvåkenhet kan import av noen trevarer resultere i at det innføres fremmede arter av insekter, ...

    • 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 ...

    • Six new species of Sporothrix from hardwood trees in Poland 

      Ostafińska, Agnieszka; Jankowiak, Robert; Bilański, Piotr; Solheim, Halvor; Wingfield, Michael J. (Peer reviewed; Journal article, 2021-08-04)
      Sporothrix (Sordariales, Ascomycota) is a well-supported monophyletic lineage within the Ophiostomatales, species of which occur in a diverse range of habitats including on forest trees, in the soil, associated with bark ...

    • Skogens helsetilstand i Norge. Resultater fra skogskadeovervåkingen i 2014 

      Timmermann, Volkmar; Andreassen, Kjell; Clarke, Nicholas; Solheim, Halvor; Aas, Wenche (NIBIO RAPPORT;Vol.1 (15), Research report, 2015-11-13)