Ari Mikko Hietala

Leaf mycobiome and the success of Hymenoscyphus fraxineus in completing its life cycle depend on the canopy position of common ash 2025 Frontiers in Microbiology - Feng Long, Chatchai Kosawang, Lene R. Nielsen, Ari Mikko Hietala

Forest Damage Continuous Cover Forestry in Boreal Nordic Countries 2025 - Jarkko Hantula, Malin Elfstrand, Anne-Maarit Hekkala, Ari Mikko Hietala, Juha Honkaniemi, Maartje Klapwijk, Matti Koivula, Juho Matala, Jonas Rönnberg, Juha Siitonen, Fredrik Widemo

The relationship between trampling damages on roots and wood decay in Norway spruce forests used for silvopasture 2024 Trees, Forests and People - Ari Mikko Hietala, Wilson Lara Henao, André Kolsgaard, Simon Seljegard, Nina Elisabeth Nagy, Isabella Børja, Tor Arne Justad, Yngve Rekdal, Even Bergseng, Halvor Solheim

Mapping pathogenic fungi in decayed Norway spruce stands: Insights from harvester positional data 2024 Journal of Applied Ecology - Wilson Lara Henao, Rasmus Andreas Astrup, Ari Mikko Hietala, Kobra Maleki, Helmer Belbo, Clara Antón Fernandéz

Fungal succession in decomposing ash leaves colonized by the ash dieback pathogen Hymenoscyphus fraxineus or its harmless relative Hymenoscyphus albidus 2023 Frontiers in Microbiology - Chatchai Kosawang, Isabella Børja, Maria-Luz Herrero, Nina Elisabeth Nagy, Lene R. Nielsen, Halvor Solheim, Volkmar Timmermann, Ari Mikko Hietala

Conifer Defences against Pathogens and Pests — Mechanisms, Breeding, and Management 2023 Current Forestry Reports - Melissa Magerøy, Nina Elisabeth Nagy, Arne Steffenrem, Paal Krokene, Ari Mikko Hietala

An analysis of stand-level size distributions of decay-affected Norway spruce trees based on harvester data 2023 Annals of Forest Science - Janne Räty, Ari Mikko Hietala, Johannes Breidenbach, Rasmus Andreas Astrup

The Native Hymenoscyphus albidus and the Invasive Hymenoscyphus fraxineus Are Similar in Their Necrotrophic Growth Phase in Ash Leaves 2022 Frontiers in Microbiology - Ari Mikko Hietala, Ahto Agan, Nina Elisabeth Nagy, Isabella Børja, Volkmar Timmermann, Rein Drenkhan, Halvor Solheim

Host−Pathogen Interactions in Leaf Petioles of Common Ash and Manchurian Ash Infected with Hymenoscyphus fraxineus 2022 Microorganisms - Lene R. Nielsen, Nina Elisabeth Nagy, Sara Piqueras, Chatchai Kosawang, Lisbeth G. Thygesen, Ari Mikko Hietala

Patterns and roles of lignan and terpenoid accumulation in the reaction zone compartmentalizing pathogen-infected heartwood of Norway spruce 2022 Planta - Nina Elisabeth Nagy, Hans Ragnar Norli, Monica Fongen, Runa Berg Østby, Inger Heldal, Jahn Davik, Ari Mikko Hietala

Detection of Root, Butt, and Stem Rot presence in Norway spruce with hyperspectral imagery 2022 Silva Fennica - Benjamin Allen, Michele Dalponte, Ari Mikko Hietala, Hans Ole Ørka, Erik Næsset, Terje Gobakken

Species selection in areas subjected to risk of root and butt rot: applying Precision forestry in Norway 2022 Silva Fennica - Ana Aza, A. Maarit I. Kallio, Timo Pukkala, Ari Hietala, Terje Gobakken, Rasmus Astrup

Biotic threats for 23 major non-native tree species in Europe 2021 Scientific Data - Elisabeth Pötzelsberger, Martin M. Gossner, Ludwig Beenken, Anna Gazda, Michal Petr, Tiina Ylioja, Nicola La Porta, Dimitrios N. Avtzis, Elodie Bay, Maarten De Groot, Rein Drenkhan, Mihai-Leonard Duduman, Rasmus Enderle, Margarita Georgieva, Ari Mikko Hietala, Björn Hoppe, Herve Jactel, Kristjan Jarni, Srđan Keren, Zsolt Keseru, Marcin Koprowski, Andrej Kormuťák, María Josefa Lombardero, Aljona Lukjanova, Vitas Marozas, Edurad Mauri, Maria Cristina Monteverdi, Per Holm Nygaard, Nikica Ogris, Nicolai Olenici, Christophe Orazio, Bernhard Perny, Glória Pinto, Michael Power, Radoslaw Puchalka, Hans Peter Ravn, Ignacio Sevillano, Sophie Stroheker, Paul Taylor, Panagiotis Tsopelas, Josef Urban, Kaljo Voolma, Marjana Westergren, Johanna Witzell, Olga Zborovska, Milica Zlatkovic

Seasonal Dynamics of Fungi Associated with Healthy and Diseased Pinus sylvestris Needles in Northern Europe 2021 Microorganisms - Ahto Agan, Halvor Solheim, Kalev Adamson, Ari Mikko Hietala, Leho Tedersoo, Rein Drenkhan

Using the CODIT model to explain secondary metabolites of xylem in defence systems of temperate trees against decay fungi 2020 Annals of Botany - Hugh Morris, Ari Mikko Hietala, Steven Jansen, Javier Ribera, Sabine Rosner, Khalifah A. Salmeia, Francis W. M. R. Schwarze

The Relationship between Fungal Diversity and Invasibility of a Foliar Niche—The Case of Ash Dieback 2020 Journal of fungi (JoF) - Ahto Agan, Rein Drenkhan, Kalev Adamson, Leho Tedersoo, Halvor Solheim, Isabella Børja, Iryna Matsiakh, Volkmar Timmermann, Nina Elisabeth Nagy, Ari Mikko Hietala

The invasive forest pathogen Hymenoscyphus fraxineus boosts mortality and triggers niche replacement of European ash (Fraxinus excelsior) 2020 Scientific Reports - Olalla Díaz-Yáñez, Blas Mola-Yudego, Volkmar Timmermann, Mari Mette Tollefsrud, Ari Mikko Hietala, Jonas Oliva

Multiplex real-time PCR assays for the detection and identification of Heterobasidion species attacking conifers in Europe 2019 Plant Pathology - R. Ioos, P. Chrétien, J. Perrault, C. Jeandel, C. Dutech, P. Gonthier, F. Sillo, Ari Mikko Hietala, Halvor Solheim, J. Hubert

Invasive forest pathogens in Europe: Cross-country variation in public awareness but consistency in policy acceptability 2019 Ambio - Louise Eriksson, Johanna Boberg, Thomas L. Cech, Tamara Corcobado, Marie-Laure Desprez-Loustau, Ari Mikko Hietala, Marilia Horta Jung, Thomas Jung, Hatice Tugba Dogmus Lehtijarvi, Funda Oskay, Slavtcho Slavov, Halvor Solheim, Jan Stenlid, Jonas Oliva

The ash dieback invasion of Europe was founded by two genetically divergent individuals 2018 Nature Ecology and Evolution - Mark McMullan, Maryam Rafiqi, Gemy Kaithakottil, Bernardo J. Clavijo, Lorelei Bilham, Elizabeth Orton, Lawrence Percival-Alwyn, Ben J. Ward, Anne Edwards, Diane G.O. Saunders, Gonzalo Garcia Accinelli, Jonathan Wright, Walter Verweij, Georgios Koutsovoulos, Kentaro Yoshida, Tsuyoshi Hosoya, Louisa Williamson, Philip Jennings, Renaud Ioos, Claude Husson, Ari Mikko Hietala, Adam Vivian-Smith, Halvor Solheim, Dan MaClean, Christine Fosker, Neil Hall, James K.M. Brown, David Swarbreck, Mark Blaxter, J. Allan Downie, Matthew D. Clark

Propagule pressure build-up by the invasive Hymenoscyphus fraxineus following its introduction to an ash forest inhabited by the native Hymenoscyphus albidus 2018 Frontiers in Plant Science - Ari Mikko Hietala, Isabella Børja, Halvor Solheim, Nina Elisabeth Nagy, Volkmar Timmermann

Dieback of European Ash: What Can We Learn from the Microbial Community and Species-Specific Traits of Endophytic Fungi Associated with Ash? Endophytes of Forest Trees. Biology and Applications 2018 - Ari Mikko Hietala, Isabella Børja, Hugh Cross, Nina Elisabeth Nagy, Halvor Solheim, Volkmar Timmermann, Adam Vivian-Smith

Hymenoscyphus fraxineus is a leaf pathogen of local Fraxinus species in the Russian Far East 2017 Plant Pathology - R. Drenkhan, Halvor Solheim, A. Bogacheva, T. Riit, K. Adamson, T. Drenkhan, T. Maaten, Ari Mikko Hietala

Progression of Ash Dieback in Norway Related to Tree Age, Disease History and Regional Aspects 2017 Baltic Forestry - Volkmar Timmermann, Nina Elisabeth Nagy, Ari Mikko Hietala, Isabella Børja, Halvor Solheim

Spread of Ash Dieback in Norway 2017 Baltic Forestry - Halvor Solheim, Ari Mikko Hietala

Assessment of Seasonal Patterns in Tissue-specific Occurrence of Hymenoscyphus fraxineus in Stems of Fraxinus excelsior 2017 Baltic Forestry - Iryna Matsiakh, Halvor Solheim, Ari Mikko Hietala, Nina Elisabeth Nagy, Volodymyr Kramarets

Fungal diversity and seasonal succession in ash leaves infected by the invasive ascomycete Hymenoscyphus fraxineus 2017 New Phytologist - Hugh Cross, Jørn Henrik Sønstebø, Nina Elisabeth Nagy, Volkmar Timmermann, Halvor Solheim, Isabella Børja, Håvard Kauserud, Tor Carlsen, Barbara Rzepka, Katarzyna Wasak, Adam Vivian-Smith, Ari Mikko Hietala

Ash dieback in Norway – current situation Dieback of European Ash (Fraxinus spp.)– Consequences and Guidelines for Sustainable Management. The Report on European Cooperation in Science & Technology (COST)Action FP1103 FRAXBACK 2017 - Isabella Børja, Volkmar Timmermann, Ari Mikko Hietala, Mari Mette Tollefsrud, Nina Elisabeth Nagy, Adam Vivian-Smith, Hugh Cross, Jørn Henrik Sønstebø, Tor Myking, Halvor Solheim

Tissue-specific DNA levels and hyphal growth patterns of Hymenoscyphus fraxineus in stems of naturally infected Fraxinus excelsior saplings 2016 Forest Pathology - I. Matsiakh, Halvor Solheim, Nina Elisabeth Nagy, Ari Mikko Hietala, V. Kramarets, J Hantula

Interactions between soil pH, wood heavy metal content and fungal decay at Norway spruce stands 2016 Agriculture, Ecosystems & Environment. Applied Soil Ecology - Ari Mikko Hietala, Nina Elisabeth Nagy, Ellen Cathrine Burchardt, Halvor Solheim

The susceptibility of Asian, European and North American Fraxinus species to the ash dieback pathogen Hymenoscyphus fraxineus reflects their phylogenetic history 2016 European Journal of Forest Research - Lene R. Nielsen, Lea V. McKinney, Ari Mikko Hietala, Erik D. Kjær

Genetic Structure in the Northern Range Margins of Common Ash, Fraxinus excelsior L. 2016 PLOS ONE - Mari Mette Tollefsrud, Tor Myking, Jørn Henrik Sønstebø, Vaidotas Lygis, Ari Mikko Hietala, Myriam Heuertz

Ophiostomatoid fungi in Norway 2015 AGARICA - Halvor Solheim, Ari Mikko Hietala

Transcriptional responses of Norway spruce (Picea abies) inner sapwood against Heterobasidion parviporum 2015 Tree Physiology - Jonas Oliva, S. Rommel, Carl Gunnar Fossdal, Ari Mikko Hietala, M. Nemesio-Gorriz, Halvor Solheim, Malin Elfstrand

Identification of Low Temperature Stress Regulated Transcript Sequences and Gene Families in Italian Cypress 2015 Molecular Biotechnology - Nicola La Porta, Gaurav Sablok, Giovanni Emilliani, Ari Mikko Hietala, Alessio Giovannelli, Paolo Fontana, Emilio Potenza, Paolo Baldi

Carbon dioxide and methane formation in Norway spruce stems infected by White-rot fungi 2015 Forests - Ari Mikko Hietala, Peter Dörsch, Harald Kvaalen, Halvor Solheim

Variation in phloem resistance of Norway spruce clones and families to Heterobasidion parviporum and Ceratocystis polonica and its relationship to phenology and growth traits 2015 Scandinavian Journal of Forest Research - Tore Skrøppa, Halvor Solheim, Ari Mikko Hietala

Influence of wood durability on the suppressive effect of increased temperature on wood decay by the brown-rot fungus Postia placenta 2014 Holzforschung - Ari Hietala, Emil Stefanczyk, Nina Elisabeth Nagy, Carl Gunnar Fossdal, Gry Alfredsen

Application potential of 2nd generation PCR techniques and sequencing platforms in performance tests of wood protection products – Opinion paper 2014 AGARICA - Ari Hietala

Using laser micro-dissection and qRT-PCR to analyze cell type-specific gene expression in Norway spruce phloem 2014 PeerJ - Nina Elisabeth Nagy, Katarzyna Sikora, Paal Krokene, Ari Hietala, Halvor Solheim, Carl Gunnar Fossdal

The invasive ash dieback pathogen Hymenoscyphus pseudoalbidus exerts maximal infection pressure prior to the onset of host leaf senescence 2013 Fungal ecology - Ari Hietala, Volkmar Timmermann, Isabella Børja, Halvor Solheim

Genes associated with lignin degradation in the polyphagous white-rot pathogen Heterobasidion irregulare show substrate-specific regulation 2013 Fungal Genetics and Biology - Igor Yakovlev, Ari Hietala, Pierre-Emmanuel Courty, Taina Lundell, Halvor Solheim, Carl Gunnar Fossdal

Characterization of the ascomycetes Therrya fuckelii and T. pini fruiting on Scots pine branches in Nordic countries 2013 Mycological Progress - Halvor Solheim, Tommy Brynthe Torp, Ari M. Hietala

Xylem defense wood of Norway spruce compromised by the pathogenic white-rot fungus Heterobasidion parviporum shows a prolonged period of selective decay 2012 Planta - Nina Elisabeth Nagy, Simon Ballance, Harald Kvaalen, Carl Gunnar Fossdal, Halvor Solheim, Ari Hietala

The Pathogenic White-Rot Fungus Heterobasidion parviporum Responds to Spruce Xylem Defense by Enhanced Production of Oxalic Acid 2012 Molecular Plant-Microbe Interactions - Nina Elisabeth Nagy, Harald Kvaalen, Monica Fongen, Carl Gunnar Fossdal, Nicholas Clarke, Halvor Solheim, Ari Hietala

Substrate-specific transcription of the enigmatic GH61 family of the pathogenic white-rot fungus Heterobasidion irregulare during growth on lignocellulose 2012 Applied Microbiology and Biotechnology - Igor Yakovlev, Gustav Vaaje-Kolstad, Ari Hietala, Emil Stefanczyk, Halvor Solheim, Carl Gunnar Fossdal

Indications of heightened constitutive or primed host response affecting the lignin pathway transcripts and phenolics in mature Norway spruce clones 2012 Tree Physiology - Carl Gunnar Fossdal, Nina Elisabeth Nagy, Ari Hietala, Harald Kvaalen, Rune Slimestad, Steve Woodward, Halvor Solheim

Insight into trade-off between wood decay and parasitism from the genome of a fungal forest pathogen 2012 New Phytologist - Åke Olson, Andrea Aerts, Fred Asiegbu, Lassaad Belbahri, Ourdia Bouzid, Anders Broberg, Björn Canback, Pedro M. Coutinho, Dan Cullen, Kerstin Dalman, Giuliana Deflorio, Linda T.A. van Diepen, Christophe Dunand, Sébastien Duplessis, Mikael Durling, Paolo Gonthier, Jane Grimwood, Carl Gunnar Fossdal, David Hansson, Bernard Henrissat, Ari Hietala, Kajsa Himmelstrand, Dirk Hoffmeister, Nils Högberg, Timothy Y. James, Magnus Karlsson, Annegret Kohler, Ursula Kües, Yong-Hwan Lee, Yao-Cheng Lin, Mårten Lind, Erika Lindquist, Vincent Lombard, Susan Lucas, Karl Lundén, Emmanuelle Morin, Claude Murat, Jongsun Park, Tommaso Raffaello, Pierre Rouzé, Asaf Salamov, Jeremy Schmutz, Halvor Solheim, Jerry Ståhlberg, Heriberto Vélëz, Ronald P. de Vries, Ad Wiebenga, Steve Woodward, Igor Yakovlev, Matteo Garbelotto, Francis Martin, Igor V. Grigoriev, Jan Stenlid

Hymenoscyphus species associated to European ash 2011 EPPO Bulletin - Ari Mikko Hietala, Halvor Solheim

Ash dieback: pathogen spread and diurnal patterns of ascospore dispersal, with special emphasis on Norway 2011 EPPO Bulletin - Volkmar Timmermann, Isabella Børja, Ari Hietala, Thomas Kirisits, Halvor Solheim

En liten sekksporesopp, Hymenoscyphus pseudoalbidus, truer aska i Europa 2011 AGARICA - Halvor Solheim, Volkmar Timmermann, Isabella Børja, Ari Hietala

Cold tolerance in cypress (Cupressus sempervirens L.): a physiological and molecular study 2011 Tree Genetics & Genomes - Paolo Baldi, Luca Pedron, Ari Hietala, Nicola La Porta

Dutch elm disease has currently a low incidence on wych elm in Norway 2011 Forest Pathology - Halvor Solheim, Rune Eriksen, Ari Hietala

Quantification of fungal colonization in modified wood: Quantitative real-time PCR as a tool for studies on Trametes versicolor 2010 Holzforschung - Annica Pilgård, Gry Alfredsen, Ari Hietala

Analysing scots pine defence-related transcripts and fungal DNA levels in seedlings single- or dual-inoculated with endophytic and pathogenic Rhizoctonia species 2009 Forest Pathology - H. Grönberg, Ari Hietala, K. Haahtela

Spatial Patterns in Hyphal Growth and Substrate Exploitation within Norway Spruce Stems Colonized by the Pathogenic White-Rot Fungus Heterobasidion parviporum 2009 Applied and Environmental Microbiology - Ari Hietala, Nina Elisabeth Nagy, Arne Steffenrem, Harald Kvaalen, Carl Gunnar Fossdal, Halvor Solheim

Genotype-specific regulation of cold-responsive genes in cypress (Cupressus sempervirens L.) 2009 Gene - Luca Pedron, Paolo Baldi, Ari Hietala, Nicola La Porta

Real-time PCR-based monitoring of DNA pools in the tri-trophic interaction between Norway spruce, the rust Thekopsora areolata, and an opportunistic ascomycetous Phomopsis sp 2008 Phytopathology - Ari Hietala, Carl Gunnar Fossdal, Halvor Solheim

Identification and analysis of differentially expressed Heterobasidion parviporum genes during natural colonization of Norway spruce stems 2008 Fungal Genetics and Biology - Igor Yakovlev, Ari Hietala, Arne Steffenrem, Halvor Solheim, Carl Gunnar Fossdal

The relationship of Gremmeniella and Phomopsis to damage on Norway spruce seedlings. 2007 Communicationes Instituti Forestalis Bohemicae - Isabella Børja, Halvor Solheim, Ari Mikko Hietala, Carl Gunnar Fossdal

Quantification of host and pathogen DNA and RNA transcripts in the interaction of Norway spruce with Heterobasidion parviporum 2007 Physiological and molecular plant pathology - Karlsson Magnus, Ari Hietala, Harald Kvaalen, Halvor Solheim, Åke Olson, Jan Stenlid, Carl Gunnar Fossdal

Changes in host chitinase isoforms in relation to wounding and colonization by Heterobasidion annosum: early and strong defense response in 33-year-old resistant Norway spruce clone 2006 Tree Physiology - Carl Gunnar Fossdal, Ari Hietala, Harald Kvaalen, Halvor Solheim

Etiology and real-time polymerase chain reaction-based detection of Gremmeniella- and Phomopsis-associated disease in Norway spruce seedlings 2006 Phytopathology - Isabella Børja, Halvor Solheim, Ari Hietala, Carl Gunnar Fossdal

Sjelden soppsykdom på små granplanter 2006 AGARICA - Isabella Børja, Halvor Solheim, Ari Mikko Hietala, Carl Gunnar Fossdal

Induced chemical defenses in conifers: biochemical and molecular approaches to studying their function Chemical Ecology and Phytochemistry of Forest Ecosytems 2005 - Axel Schmidt, Zeneli Gazmend, Ari Hietala, Carl Gunnar Fossdal, Paal Krokene, Erik Christiansen, Jonathan Gershenzon

Rhizoctonia solani AG 2-1 as a causative agent of cotyledon rot on European beech (Fagus sylvatica) 2005 Forest Pathology - Ari Mikko Hietala, Lisbeth Mehli, Nina Elisabeth Nagy, Harald Kvaalen, Nicola La Porta

A case study from the interaction of strawberry and Botrytis cinerea highlights the benefits of comonitoring both partners at genomic and mRNA level 2005 New Phytologist - Lisbeth Mehli, Trygve Devold Kjellsen, Frances M. Dewey, Ari Mikko Hietala

Overvåking- og kartleggingsprogram for furuvednematode og Monochamus i 2025 2026 - Ari Mikko Hietala, Paal Krokene, Henrik Antzée-Hyllseth, Eva Solbjørg Flo Heggem, Solveig Haukeland, Joyce Machado Nunes Romeiro, Irene Rasmussen, Birgit Schaller, Jan Philip Øyen

Forventede endringer i klima, regional klimarisiko, indikatorer. 2025 Fagdag /workshop om klimatilpasning i jord og skogbruk i Østfold. - Lillian Øygarden, Ari Mikko Hietala

Bekjempelse av rotråte på gran: Viktig og vanskelig 2025 - Nina Elisabeth Nagy, Ari Mikko Hietala, Arne Steffenrem, Helmer Belbo, Jahn Davik

Overvåking- og kartleggingsprogram for furuvednematode og Monochamus i 2024 2025 - Ari Mikko Hietala, Paal Krokene, Jostein Gohli, Henrik Antzée-Hyllseth, Torstein Kvamme, Joyce Machado Nunes Romeiro, Birgit Schaller, Jan Philip Øyen, Irene Rasmussen, Tor Arne Justad, Solveig Haukeland, Christer Magnusson, May Bente Brurberg, Monica Skogen, Eva Solbjørg Flo Heggem

Ash dieback: Infection, biology and management 2024 11th Hardwood-conference - Nina Elisabeth Nagy, Volkmar Timmermann, Isabella Børja, Halvor Solheim, Ari Mikko Hietala

Overvåking- og kartleggingsprogram for furuvednematode og Monochamus 2023 2024 - Ari Mikko Hietala, Jostein Gohli, Henrik Antzée-Hyllseth, Torstein Kvamme, Marte Persdatter Tangvik, Solveig Haukeland, Birgit Schaller, Jan Philip Øyen, Irene Rasmussen, Tor Arne Justad, Eva Solbjørg Flo Heggem, Christer Magnusson

Overvåking- og kartleggingsprogram for furuvednematode og Monochamus 2022 2023 - Ari Mikko Hietala, Jostein Gohli, Henrik Antzée-Hyllseth, Torstein Kvamme, Marte Persdatter Tangvik, Solveig Haukeland, Birgit Schaller, Irene Rasmussen, Tor Arne Justad, Eva Solbjørg Flo Heggem, Christer Magnusson

Oppdatering av kunnskapsgrunnlag for klimatiltak i skog: Gjennomgang av 11 utvalgte tiltak i bestandsskogbruket 2023 - Gunnhild Søgaard, Ryan M. Bright, Nicholas Clarke, Inger Fløistad, Aksel Granhus, Andreas Hagenbo, Kjersti Holt Hanssen, Ari Mikko Hietala, O. Janne Kjønaas, Christian Kuehne, Jørund Rolstad, Svein Solberg, Arne Steffenrem, Jogeir Nicolai Stokland, Ken Olaf Storaunet

Skogens helsetilstand i Norge. Resultater fra skogskadeovervåkingen i 2022 2023 - Volkmar Timmermann, Isabella Børja, Nicholas Clarke, Jostein Gohli, Ari Mikko Hietala, Jane Uhd Jepsen, Paal Krokene, Harald Haga Lislegård, Nina Elisabeth Nagy, Hans Nyeggen, Sverre Solberg, Halvor Solheim, Thomas Mørtvedt Solvin, Arvid Svensson, Mari Mette Tollefsrud, Ole Petter Laksforsmo Vindstad, Bjørn Økland, Wenche Aas

Bacterial diseases in forest trees 2022 - Nicola La Porta, Ari Mikko Hietala, Paolo Baldi

Årsrapport for OK-program Furuvednematode og Monochamus 2021 2022 - Ari Mikko Hietala, Torstein Kvamme, Solveig Haukeland, Marte Persdatter Tangvik, Christer Magnusson, Birgit Schaller, Jostein Gohli, Henrik Antzée-Hyllseth, Tor Arne Jusland, Eva Solbjørg Flo Heggem

Vegetation survey at Årdal, Sunndal and Mosjøen aluminium smelters in 2019-2020. Impact of fluoride emissions on local vegetation. 2021 - Isabella Børja, Ari Mikko Hietala, Nina Elisabeth Nagy, Halvor Solheim, Volkmar Timmermann

Diplodia sapinea 2021 23rd Annual meeting of the European Mycological Network - Venche Talgø, Inger Fløistad, Isabella Børja, Ari Mikko Hietala, Martin Pettersson

Skogens helsetilstand i Norge. Resultater fra skogskadeovervåkingen i 2020. 2021 - Volkmar Timmermann, Andreas Myki Beachell, May Bente Brurberg, Isabella Børja, Nicholas Clarke, Inger Fløistad, Ari Mikko Hietala, Gro Hylen, Jane Uhd Jepsen, Jørn-Frode Nordbakken, Martin Pettersson, Sverre Solberg, Halvor Solheim, Venche Talgø, Ole Petter Laksforsmo Vindstad, Bjørn Økland, Wenche Aas

Monitoring pinewood nematode - Bursaphelenchus xylophilus IN NORWAY 2019 2020 - Christer Magnusson, Ari Mikko Hietala, Per Hansen, Eva Solbjørg Flo Heggem, Irene Rasmussen, Birgit Schaller, Marte Persdatter Tangvik, Ben Z Hellal

Ny soppsjukdom på furu i Norge 2020 Skog - Venche Talgø, Isabella Børja, Inger Fløistad, Ari Mikko Hietala, Halvor Solheim, Martin Pettersson

Klimakur 2030 – beskrivelse av utvalgte klimatiltak knyttet til skog. Supplement. 2020 - Gunnhild Søgaard, Gry Alfredsen, Clara Antón Fernández, Rasmus Andreas Astrup, Helmer Belbo, Nicholas Clarke, Rune Eriksen, Aksel Granhus, Kjersti Holt Hanssen, Ari Mikko Hietala, Frans Kockum, Christian Wilhelm Mohr, Jørn-Frode Nordbakken, Jogeir Nicolai Stokland, Jennie Sverker, Tonje Økland

Klimatiltak i landbruket i Trondheim kommune 2020 - Gunnhild Søgaard, Arne Bardalen, Finn Walland, Adam O'Toole, Helmer Belbo, Kjersti Bakkebø Fjellstad, Kjersti Hanssen, Ari Mikko Hietala

Klimakur 2030 – beskrivelse av utvalgte klimatiltak knyttet til skog 2020 - Gunnhild Søgaard, Gry Alfredsen, Clara Antón-Fernández, Rasmus Andreas Astrup, Hans H. Blom, Nicholas Clarke, Rune Eriksen, Aksel Granhus, Kjersti Holt Hanssen, Ari Mikko Hietala, Paal Krokene, Christian Wilhelm Mohr, Per Holm Nygaard, Svein Solberg, Arne Steffenrem

Diplodia sapinea - framand soppart skadar bartre 2020 Naturen - Venche Talgø, Inger Fløistad, May Bente Brurberg, Isabella Børja, Ari Mikko Hietala, Martin Pettersson

Diplodia sapinea – en ny skadegjører på furu 2020 NIBIO POP - Martin Pettersson, Inger Fløistad, Isabella Børja, Ari Mikko Hietala, Venche Talgø

Plantemetabolomikk som verktøy for bioprospektering i soppangrepet gran 2019 NIBIO-konferansen - Marit Almvik, Nina Elisabeth Nagy, Hans Ragnar Norli, Ari Mikko Hietala, Sven R. Odenmarck, Monica Fongen, Anas Kamleh

Skogskader – en kunnskapssammenstilling 2019 - Kjersti Holt Hanssen, Svein Solberg, Ari Mikko Hietala, Paal Krokene, Jørund Rolstad, Halvor Solheim, Bjørn Økland

Metabolomics as a Discovery Tool for Bioprospecting and Detection of Defense Compounds During Fungal Infection of Spruce Wood 2019 Metabolomics 2019 - Marit Almvik, Marie-Pierre Pavageau, Nina Elisabeth Nagy, Hans Ragnar Norli, Ari Mikko Hietala, Sven R. Odenmarck, Monica Fongen, Anas Kamleh

Compound Discoverer as a tool for bioprospecting and detection of defense compounds during fungal infection of Spruce wood 2019 8th International Proteome Discoverer User's Meeting and 4th Compound Discoverer User's Meeting - Marit Almvik, Nina Elisabeth Nagy, Hans Ragnar Norli, Ari Mikko Hietala, Sven R. Odenmarck, Monica Fongen, Anas Kamleh

Presisjonsskogbruk og råte i skog 2019 Lansering av Nibio Steinkjer - Ari Mikko Hietala

Kartlegging av omfanget og spredning av råte i skogene ved hjelp av hogstmaskindata 2019 Agritech Nordic - Ari Mikko Hietala

Såring og råte hos gran 2019 Uttalelse som sakkyndig i rettsak om beiting relaterte skader i gran skog - Ari Mikko Hietala

Consideration of traits that facilitate invasibility of Hymenoscyphus fraxineus in Europe 2018 IUFRO Working Party 7.02.01 "Root & Stem Rots" Conference; Uppsala, Sweden; 26 August - 1 September 2018. - Ari Mikko Hietala, Isabella Børja, Nina Elisabeth Nagy, Halvor Solheim, Volkmar Timmermann

Precision forestry for improved resource utilization and reduced wood decay in Norwegian forests 2018 IUFRO Working Party 7.02.01 "Root & Stem Rots" Conference; Uppsala, Sweden; 26 August - 1 September 2018 - Ari Mikko Hietala, Halvor Solheim, Kjersti Holt Hanssen, Bruce Talbot, Rasmus Andreas Astrup

Consideration of traits that facilitate invasiveness of Hymenoscyphus fraxineus 2018 Jubileumsseminar til Halvor Solheim - Ari Mikko Hietala, Isabella Børja, Hugh B. Cross, Nina Elisabeth Nagy, Jørn Henrik Sønstebø, Volkmar Timmermann, Adam Vivian-Smith, Halvor Solheim

Askeskuddbeger – kom og etablerte seg 2018 Seminar for Artsdatabank - Isabella Børja, Ari Mikko Hietala, Nina Elisabeth Nagy, Halvor Solheim, Volkmar Timmermann, Mari Mette Tollefsrud

Precision forestry for improved resource utilization and reduced wood decay in Norwegian forests 2018 Fagseminar - Ari Mikko Hietala, Halvor Solheim, Kjersti Holt Hanssen, Bruce Talbot, Rasmus Andreas Astrup

Ash dieback in Norway: history, lessons learned and current/planned activities 2018 Euphresco network meeting - Volkmar Timmermann, Mari Mette Tollefsrud, Halvor Solheim, Isabella Børja, Nina Elisabeth Nagy, Ari Mikko Hietala

Skogbehandling for verdiproduksjon i et klima i endring 2017 - Gunnhild Søgaard, Rasmus Andreas Astrup, Micky Allen, Kjell Andreassen, Even Bergseng, Inger Fløistad, Aksel Granhus, Kjersti Holt Hanssen, Ari Mikko Hietala, Harald Kvaalen, Svein Solberg, Halvor Solheim, Arne Steffenrem, Jogeir Nicolai Stokland, Bjørn Økland

Spredning av askeskuddsjuken. 2017 Norsk Skogbruk - Halvor Solheim, Ari Mikko Hietala

Rotkjuker skyld i det aller meste av råteskader. 2017 Skog - Halvor Solheim, Ari Mikko Hietala, Lars Halvor Bjørbæk, Andreas Furnes Fjærli

Ask og askeskuddsjuke - Askeskuddbeger 2017 Norsk Skogbruk - Halvor Solheim, Isabella Børja, Volkmar Timmermann, Nina Elisabeth Nagy, Ari Mikko Hietala

Hymenoscyphus fraxineus shows population density dependent growth rate 2017 IUFRO 125th Anniversary Congress - Isabella Børja, Halvor Solheim, Nina Elisabeth Nagy, Volkmar Timmermann, Ari Mikko Hietala

Progression of Ash Dieback in Norway Related to Tree Age, Disease History and Regional Aspects 2017 IUFRO 125th Anniversary Congress - Volkmar Timmermann, Nina Elisabeth Nagy, Ari Mikko Hietala, Isabella Børja, Halvor Solheim

Askeskuddsjuke, årsak og biologi 2017 NIBIO POP - Halvor Solheim, Isabella Børja, Nina Elisabeth Nagy, Volkmar Timmermann, Ari Mikko Hietala

Spredning av askeskuddsjuke i Europa og Norge 2017 NIBIO POP - Halvor Solheim, Ari Mikko Hietala

Hvordan vil et endret klima påvirke skogen, hva bør vi gjøre nå? 2016 Klimaendring og skogbruket - Svein Solberg, Ari Mikko Hietala, Arne Steffenrem, Harald Kvaalen, Carl Gunnar Fossdal, Bjørn Økland

Role of spore density for infection by Hymenoscyphus fraxineus 2016 Fagseminar i anledning av besøk fra Japan - Isabella Børja, Volkmar Timmermann, Ari Mikko Hietala, Nina Elisabeth Nagy, Halvor Solheim

Use of molecular biology to study invasive tree pathogens 2016 Forest protection seminar - Ari Mikko Hietala

Fungal diversity and seasonal succession in ash leaves infected by the invasive ascomycete Hymenoscyphus fraxineus 2016 Norwegian Plant Biology 2016 - Ari Mikko Hietala, Hugh Cross, Halvor Solheim, Volkmar Timmermann, Nina Elisabeth Nagy, Isabella Børja, Adam Vivian-Smith, Jørn Henrik Sønstebø

Molecular Biology in Forest Pathology 2016 Forest protection seminar - Ari Mikko Hietala

Monitoring of ash dieback on permanent plots in Norway 2016 EU prosjekt møte: BiodivERsA_RESIPATH (Responses of European Forests and Society to Invasive Pathogens - Ari Mikko Hietala, Volkmar Timmermann, Halvor Solheim, Nina Elisabeth Nagy, Isabella Børja

Introduction to the EEA project EMP162, DNA-based early detection and diagnostics of alien invasive forest pathogens and tracing of their introduction pathways into northern Europe 2016 seminar med EEA program bord fra NFR og Estland - Ari Mikko Hietala

Invaderende arter - askeskuddsyke 2016 Forskningsdager 2016 - Ari Mikko Hietala

Combined analysis of National Forest Inventory data and data from permanent monitoring plots to calculate base-rate mortality and disease-related mortality in elm and ash populations in Norway 2016 EU prosjekt møte: BiodivERsA_RESIPATH (Responses of European Forests and Society to Invasive Pathogens - olalla diaz yanez, blas mola, Ari Mikko Hietala

Almesjukesopp og askeskuddbeger – alvorlige trusler mot norske trær. 2016 Gartneryrket - Halvor Solheim, Volkmar Timmermann, Ari Mikko Hietala

Short-term ecological consequences of removal of harvesting residues for bioenergy from forests in Norway 2016 24th European Biomass Conference & Exhibition - Nicholas Clarke, Hugh Cross, Toril Drabløs Eldhuset, Kjersti Holt Hanssen, Ari Mikko Hietala, O. Janne Kjønaas, Holger Lange, Jørn-Frode Nordbakken, Tonje Økland, Ingvald Røsberg, Silje Skår

Råte i granskog: Det er store forskjeller i kjennskap til forekomst og kontrolltiltak innen norsk skogbruk 2016 NIBIO POP - Ari Mikko Hietala, Halvor Solheim, Bruce Talbot

Short-term effects of whole-tree and stem-only harvesting on C and N fluxes in two Picea abies stands, Norway 2015 Geophysical Research Abstracts - O. Janne Kjønaas, Nicholas Clarke, Toril Drabløs Eldhuset, Ari Mikko Hietala, Hugh Cross, Kjersti Holt Hanssen, Tonje Økland, Holger Lange, Jørn-Frode Nordbakken, Ingvald Røsberg

Short-term effects of stem-only and whole-tree harvesting on C and N fluxes in two Picea abies stands, SE and SW Norway 2015 Managing Forests to Promote Environmental Services - O. Janne Kjønaas, Nicholas Clark, Toril Drabløs Eldhuset, Ari Mikko Hietala, Hugh Cross, Kjersti Holt Hansen, Tonje Økland, Holger Lange, Jørn-Frode Nordbakken, Ingvald Røsberg

Konsentrasjoner av metan og karbondioksid i grantrær infisert med råtesopp og foreløpige beregninger av årlige flukser på bestandsnivå 2015 - Harald Kvaalen, Ari Mikko Hietala, Peter Dörsch, Halvor Solheim

Seasonal dynamics in sporulation of Hymenoscyphus fraxineus and composition of ash leaf associated fungal community 2015 Sluttseminar på NFR prosjekt 203822 - Ari Mikko Hietala, Hugh Cross, Isabella Børja, Nina Elisabeth Nagy, Volkmar Timmermann, Halvor Solheim, Jørn Henrik Sønstebø, Adam Vivian-Smith

Hvilke faktorer betinger infeksjon av askeblader med Hymenoscyphus fraxineus? 2015 Seminar om askeskuddsyke - Isabella Børja, Nina Elisabeth Nagy, Ari Mikko Hietala, Volkmar Timmermann, Halvor Solheim

Carbon dioxide and methane formation in Norway spruce stems infected by white-rot fungi 2015 14th IUFRO, Working Party 7.02.01 “Root and Butt Rot of Forest Trees”, 12-18th October 2015, TURKEY - Ari Mikko Hietala, Harald Kvaalen, Peter Dörsch, Halvor Solheim

Results of tissue specific colonization profiles of the ash dieback pathogen Hymenoscyphus fraxineus in Norwegian and Ukrainian samples of Fraxinus excelsior stems 2015 COST Action meeting FRAXBACK - I. Matsiakh, Halvor Solheim, Nina Elisabeth Nagy, Ari Mikko Hietala, V. Kramarets

Colonization of stem tissue of European ash by the ash dieback pathogen Hymenoscyphus fraxineus 2015 Seminar om askeskuddsyke - I. Matsiakh, Halvor Solheim, Nina Elisabeth Nagy, Ari Mikko Hietala

Kampen mot rotråte - genetikk og skogbehandling 2015 Skog og tre 2015 - Ari Mikko Hietala

Metagenomics of ash leaf associated fungal community 2015 RESIPATH prosjekt - Ari Mikko Hietala, Isabella Børja, Hugh Cross, Nina Elisabeth Nagy, Halvor Solheim, Jørn Henrik Sønstebø, Volkmar Timmermann, Adam Vivian-Smith

Metagenomics of ash leaf associated fungal community and population genetics of Hymenoscyphus fraxineus 2015 Nornex meeting - Ari Mikko Hietala, Isabella Børja, Hugh Cross, Volkmar Timmermann, Nina Elisabeth Nagy, Halvor Solheim, Jørn Henrik Sønstebø, adam vivian smith

Short-term effects of whole-tree and stem-only harvesting on C and N fluxes in two Picea abies stands, Norway 2015 Geophysical Research Abstracts - O. Janne Kjønaas, Nicholas Clarke, Toril Drabløs Eldhuset, Ari Mikko Hietala, Hugh Cross, Kjersti Holt Hanssen, Tonje Økland, Holger Lange, Jørn-Frode Nordbakken, Ingvald Røsberg

Experiences of ash dieback in Norway 2014 All Ireland Chalara Conference: ‘Where do we go from here?’ - Ari Hietala, Volkmar Timmermann, Isabella Børja, Halvor Solheim

Community profiling of ash leaf mycoflora at a stand heavily affected by ash dieback 2014 Seminardag om bruk av neste generasjon sekvensering i plantehelse - Ari Mikko Hietala, Hugh Cross

Role of infection pressure and cuticle in leaf infection by Hymenoscyphus pseudoalbidus 2014 XXIV IUFRO World Congress - Isabella Børja, Nina Elisabeth Nagy, Ari Mikko Hietala, Volkmar Timmermann, Halvor Solheim

Short-term effects of whole tree and stem-only harvesting on C and N fluxes in two Picea abies stands, Norway 2014 IUFRO World Congress - O. Janne Kjønaas, Nicholas Clarke, Toril Drabløs Eldhuset, Ari Mikko Hietala, Hugh Cross, Tonje Økland, Jørn-Frode Nordbakken, Holger Lange, Ingvald Røsberg, Kjersti Holt Hanssen

Virkninger av økt biomasseuttak på jord, jordvann og sopp: Prosjektet Ecobrem WP I. 2014 Bioenergi fra skog i økologisk perspektiv - O. Janne Kjønaas, Nicholas Clark, Toril Drabløs Eldhuset, Ari Mikko Hietala

Praktiske råd for bærekraftig uttak av grot – hvilke konklusjoner kan vi trekke? 2014 Bioenergi fra skog i økologisk perspektiv - Nicholas Clarke, Toril Drabløs Eldhuset, O. Janne Kjønaas, Tonje Økland, Kjersti Holt Hanssen, Wenche Aas, Trine Aulstad Sogn, Kjell Andreassen, Susanne Eich-Greatorex, Helja-Sisko Helmisaari, Ari Mikko Hietala, Erik Eid Hohle, Staffan Jacobson, Holger Lange, Jørn Frode Nordbakken, Karsten Raulund-Rasmussen, Ingvald Røsberg, Silje Skår, Volkmar Timmermann, Andreas Tutturen

Short-term effects of whole tree and stem-only harvesting on C and N fluxes in two Picea abies stands, Norway 2014 International forestry review - O. Janne Kjønaas, Nicholas Clarke, Toril Drabløs Eldhuset, Kjersti Holt Hanssen, Ari Mikko Hietala, Holger Lange, Jørn-Frode Nordbakken, Tonje Økland, Ingvald Røsberg

Økologiske konsekvenser av økt biomasseuttak fra skog i Norge: Introduksjon til prosjektet Ecobrem 2014 Bioenergi fra skog i økologisk perspektiv - Nicholas Clarke, Toril Drabløs Eldhuset, O. Janne Kjønaas, Tonje Økland, Kjersti Holt Hanssen, Wenche Aas, Trine Aulstad Sogn, Kjell Andreassen, Susanne Eich-Greatorex, Helja-Sisko Helmisaari, Ari Mikko Hietala, Erik Eid Hohle, Staffan Jacobson, Holger Lange, Jørn Frode Nordbakken, Karsten Raulund-Rasmussen, Ingvald Røsberg, Silje Skår, Volkmar Timmermann, Andreas Tutturen

Ash dieback and Dutch elm disease in Norway 2014 EU prosjekt møte "Responses of European Forests and Society to Invasive Pathogens" - Ari Mikko Hietala

Vinterens frosttørkeskader 2014 Skogfaglig samling i Nord-Trøndelag - Ari Mikko Hietala, Halvor Solheim

Short- and long-term ecological consequences of removal of harvesting residues for bioenergy from forests in Norway 2014 International forestry review - Nicholas Clarke, Toril Drabløs Eldhuset, Kjersti Holt Hanssen, Ari Mikko Hietala, O. Janne Kjønaas, Holger Lange, Jørn-Frode Nordbakken, Tonje Økland, Ingvald Røsberg

Short- and long-term ecological consequences of removal of harvesting residues for bioenergy from forests in Norway 2014 XXIV IUFRO World Congress - Nicholas Clarke, Toril Drabløs Eldhuset, Kjersti Holt Hanssen, Ari Mikko Hietala, O. Janne Kjønaas, Holger Lange, Jørn-Frode Nordbakken, Tonje Økland, Ingvald Røsberg

Askeskuddsjuke - en trussel mot norsk ask. Ash dieback in Norway - causes, impact and control 2014 Naturverdier under press. Miljø 2015-konferansen - Halvor Solheim, Isabella Børja, Hugh Cross, Ari Mikko Hietala, Tor Myking, Nina Elisabeth Nagy, Jørn Henrik Sønstebø, Volkmar Timmermann, Mari Mette Tollefsrud

Short-term effects of whole tree and stem-only harvesting on C and N fluxes in two Picea abies stands, Norway 2014 International forestry review - O. Janne Kjønaas, Nicholas Clarke, Toril Drabløs Eldhuset, Kjersti Holt Hanssen, Ari Mikko Hietala, Holger Lange, Jørn-Frode Nordbakken, Tonje Økland, Ingvald Røsberg

The reaction zone is a unique plant defense found in trees: differentially expressed genes and cell wall changes 2011 BMC Proceedings - Carl Gunnar Fossdal, Nina Elisabeth Nagy, Ari Hietala, Igor Yakovlev, Halvor Solheim

Nytt om askeskuddsjuke. 2011 Park & anlegg : fagblad for grøntanleggssektoren - Halvor Solheim, Volkmar Timmermann, Isabella Børja, Ari Mikko Hietala, Venche Talgø

Skadesopp til nytte og besvær 2010 Glimt fra Skog og landskap - Carl Gunnar Fossdal, Halvor Solheim, Ari Mikko Hietala, Igor Yakovlev

Rotkjuke - på godt og vondt 2008 - Carl Gunnar Fossdal, Ari Mikko Hietala, Halvor Solheim

Defence reactions in Norway spruce toward the pathogenic root-rot causing fungus Heterobasidion annosum 2006 - Carl Gunnar Fossdal, Ari Mikko Hietala, Harald Kvaalen, Halvor Solheim

Colonisation profiles of Thekopsora areolata and a co-existing Phomopsis species in Norway spruce shoots 2006 - Ari Mikko Hietala, Halvor Solheim, Carl Gunnar Fossdal

Top shoot dieback on Norway spruce seedlings associated with Gremmeniella and Phomopsis 2006 - Isabella Børja, Halvor Solheim, Ari Mikko Hietala, Carl Gunnar Fossdal

Forest pathology research in the Nordic and Baltic countries 2005. Proceedings from the SNS meeting in Forest Pathology at Skogbrukets Kursinstitutt, Biri, Norway, 28-31 August 2005 2006 - Halvor Solheim, Ari Mikko Hietala

DNA fra en celle er nok for å finne råteseoppen! 2005 Glimt fra skogforskningen - Carl Gunnar Fossdal, Ari Mikko Hietala, Halvor Solheim

The relationship of Gremmeniella and Phomopsis to damage on Norway spruce seedlings. 2005 IUFRO Working Party "Diseases and Insects in Forest Nurseries" - Isabella Børja, Halvor Solheim, Ari Mikko Hietala, Carl Gunnar Fossdal