• Agonimia globulifera new to mainland Norway 

      Olsen, Oddvar; Haug, Solveig; Nordén, Björn (Journal article; Peer reviewed, 2019)
      During an excursion to Vetvika, Bremanger municipality in Sogn og Fjordane in search of rare bryo-phytes, the first author made a collection of small black perithecia overgrowing bryophytes on shellsand. The collection was ...
    • 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)
      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 ...
    • Anisomeridium viridescens and Arthopyrenia callunae, two pyrenolichens new to Fennoscandia 

      Nordén, Björn; Aptroot, André (Journal article; Peer reviewed, 2018)
      Lichens with perithecioid ascomata (‘pyrenolichens’), especially weakly lichenized species, are poorly known in Norway, and Fennoscandia. Several new country records for Norway have been published recently (Nordén et al. ...
    • At which spatial and temporal scales can fungi indicate habitat connectivity? 

      Nordén, Jenni; Åström, Jens; Josefsson, Torbjörn; Blumentrath, Stefan; Ovaskainen, Otso; Sverdrup-Thygeson, Anne; Nordén, Björn (Journal article; Peer reviewed, 2018)
      Isolation of habitats in space and time affects species globally and in a multitude of ecosystems. It is however often difficult to assess the level of isolation from the point of view of the focal species. Indicator species ...
    • Bryocentria hypothallina (Hypocreales) – a new species on Metzgeria furcata 

      Nordén, Björn; Gardiennet, Alain; Priou, Jean-Paul; Döbbeler, Peter (Peer reviewed, 2015)
      Bryocentria hypothallina (Bionectriaceae, Hypocreales) is described as a new species. It grows necrotrophically on the liverwort Metzgeria furcata (Metzgeriales), causing bleached, insular infections. Ascomata are formed ...
    • Can large unmanaged trees replace ancient pollarded trees as habitats for lichenized fungi, non-lichenized fungi and bryophytes? 

      Nordén, Björn; Jordal, John Bjarne; Evju, Marianne (Journal article; Peer reviewed, 2017)
      Management of ancient trees constitutes a major dilemma in the conservation of associated biodiversity. While traditional methods are often advocated, such practices may incur considerable costs and their effects have ...
    • Endophytes dominate fungal communities in six-year-old veteranisation wounds in living oak trunks 

      Menkis, Audrius; Redr, Deanne; Bengtsson, Vikki; Hedin, Jonas; Niklasson, Mats; Nordén, Björn; Dahlberg, Anders (Peer reviewed; Journal article, 2020)
    • Fra villniss til verdifull natur 

      Olsen, Siri Lie; Nordén, Björn (Journal article, 2019-04)
    • Gamle edelløvtrær – et hotspot-habitat. Sluttrapport under ARKO-prosjektets periode III 

      Nordén, Björn; Evju, Marianne; Jordal, John Bjarne (NINA Rapport;1168, Research report, 2015)
      Nordén, B., Evju, M. & Jordal, J.B. 2015. Gamle edelløvtrær – et hotspot-habitat. Sluttrapport under ARKO-prosjektets periode III. − NINA Rapport 1168. 91 s. Formålet med denne rapporten er å presentere arbeidet med ...
    • Gastropod grazing may prevent reintroduction of declining N-fixing epiphytic lichens in broadleaved deciduous forests 

      Gauslaa, Yngvar; Johlander, Stina; Nordén, Björn (Journal article; Peer reviewed, 2018)
      We studied the potential to use reintroduction of two declining N-fixing flagship lichens to identify factors affecting failure or success in SW Swedish sites that had experienced substantially reduced acidification. After ...
    • Multi-locus phylogenetic analysis of lophiostomatoid fungi motivates a broad concept of Lophiostoma and reveals nine new species 

      Andreasen, Mathias; Skrede, Inger; Jaklitsch, Walter; Voglmayr, Hermann; Nordén, Björn (Peer reviewed; Journal article, 2021)
      Recent studies on the fungal families Lophiostomataceae and Lophiotremataceae (Pleosporales) have provided varying phylogenetic and taxonomic results concerning constituent genera and species. By adding DNA sequences of ...
    • Naturverdier i Østmarka. Vurdering av Østmarkas naturverdier i henhold til naturmangfoldlovens krav til nasjonalpark 

      Bendiksen, Egil; Bakkestuen, Vegar; Brandrud, Tor Erik; Framstad, Erik; Jacobsen, Rannveig M.; Nordén, Björn; Odden, John (NINA Rapport;1945, Research report, 2021)
      Bendiksen, E, Bakkestuen, V., Brandrud, T.E., Framstad, E., Jacobsen, R.M., Nordén, B. & Odden, J. 2021. Naturverdier i Østmarka. Vurdering av Østmarkas naturverdier i henhold til naturmangfoldlovens krav til nasjonalpark. ...
    • Overvåking av sjeldne og rødlistede lavpå gamle eiker – lærdommer fra etpilotstudium 

      Sverdrup-Thygeson, Anne; Evju, Marianne; Gough, Leonie; Bratli, Harald; Haugan, Reidar; Nordén, Björn (Journal article; Peer reviewed, 2015)
    • Recent forest on abandoned agricultural land in the boreonemoral zone – Biodiversity of plants and fungi in relation to historical and present tree cover 

      Nordén, Björn; Olsen, Siri Lie; Haug, Solveig; Rusch, Graciela (Peer reviewed; Journal article, 2021)
      Recent forests may be an asset for green infrastructure and ecological restoration, but studies are needed of the variation in forest biodiversity among sites, and possible reasons for observed patterns. In boreonemoral ...
    • Restaurering av edelløvskog: fortidens skog er fremtidens skog 

      Olsen, Siri Lie; Rusch, Graciela M.; Kvakkestad, Valborg; Rønningen, Katrina; Rørstad, Per Kristian; Venter, Zander; Nordén, Björn (NINA Temahefte;77, Book, 2020)
    • Stylonectria norvegica (Nectriaceae), a new species fromNorway 

      Lechat, Christian; Fournier, Jacques; Nordén, Björn (Peer reviewed, 2015)
      Stylonectria norvegica sp. nov. is described from three collections on pyrenomycetous hosts on Quercus, Betula and Alnus in Norway. The fusarium-like asexual state was obtained in culture and the ITS1- 5.8S-ITS2 loci ...
    • The economy of selective cutting in recent mixed stands during restoration of temperate deciduous forest 

      Nordén, Björn; Rørstad, Per Kristian; Magnér, Jacob; Götmark, Frank; Löf, Magnus (Peer reviewed, 2019)
      Forest cover is increasing in many regions due to spontaneous reforestation on abandoned pastures and fields. The resulting recent forests may need management to improve ecosystem quality, and this could possibly be combined ...
    • Three species of Sordariomycetes (Ascomycota: Pezizomycotina) new to Norway 

      Nordén, Björn; Jäntti, Mari; Jordal, John Bjarne (Journal article; Peer reviewed, 2018)
      Three species of Sordariomycetes (Ascomycota: Pezizomycotina) new to Norway
    • Twenty species of bitunicate ascomycetes new to Norway 

      Nordén, Björn; Jäntti, Mari; Jordal, John Bjarne; Læssøe, Thomas; Voglmayr, Hermann; Jaklitsch, Walter (Journal article; Peer reviewed, 2018)
      We here report the following 20 species of non-lichenized bitunicate ascomycetes as new to Norway: Antealophiotrema brunneosporum, Botryosphaeria corticola, Capronia munkii, Capronia normandinae, Capronia parasitica, ...