Blar i NTNU Open på forfatter "Elven, Reidar"
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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)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 ... -
Botaniske undersøkelser i Rien-Hyllingen-området, Røros, Sør-Trøndelag
Elven, Reidar (NTNU Vitenskapsmuseet Rapport Botanisk Serie, 0802-2992; 1978:2, Research report, 1978) -
Botaniske verdier i Dovrefjell-området
Elven, Reidar; Fremstad, Eli; Hegre, Hanne; Nilsen, Liv; Solstad, Heidi (NTNU Vitenskapsmuseet Rapport Botanisk Serie, 0802-2992; 1996:3, Research report, 1996) -
Botaniske verneverdier i Røros, Sør-Trøndelag
Elven, Reidar (NTNU Vitenskapsmuseet Rapport Botanisk Serie, 0802-2992; 1979:6, Research report, 1979) -
Combining population genomics and ecological niche modeling to assess taxon limits between Carex jemtlandica and C. lepidocarpa
Nygård, Malene Østreng; Kemppainen, Petri; Speed, James D. M.; Elven, Reidar; Flatberg, Kjell Ivar; Galten, Leif Persen; Yousefi, Narjes; Solstad, Heidi; Bendiksby, Mika (Journal article; Peer reviewed, 2021)Carex section Ceratocystis (Cyperaceae) is a group of recently evolved plant species, in which hybridization is frequent, introgression is documented, taxonomy is complex, and morphological boundaries are vague. Within ... -
De store bjørnekjeksartene Heracleum i Norge
Fremstad, Eli; Elven, Reidar (NTNU Vitenskapsmuseet Rapport Botanisk Serie, 0802-2992; 2006:2, Research report, 2006) -
Generic Ecological Impact Assessment of Alien Species (GEIAA): the third generation of assessments in Norway
Sandvik, Hanno; Hilmo, Olga; Finstad, Anders Gravbrøt; Hegre, Hanne; Moen, Toril Loennechen; Rafoss, Trond; Skarpaas, Olav; Elven, Reidar; Sandmark, Helge; Gederaas, Lisbeth (Journal article; Peer reviewed, 2019)The Generic Ecological Impact Assessment of Alien Species (GEIAA) is described. It comprises a set of criteria and an assessment procedure. The set of criteria consists of three criteria that quantify invasion potential, ... -
Long-distance plant dispersal to North Atlantic islands: colonization routes and founder effect
Alsos, Inger Greve; Ehrich, Dorothee; Eidesen, Pernille Bronken; Solstad, Heidi Merethe; Westergaard, Kristine Bakke; Schonswetter, Peter; Tribsch, Andreas; Birkeland, Siri; Elven, Reidar; Brochmann, Christian (Journal article; Peer reviewed, 2015)Long-distance dispersal (LDD) processes influence the founder effect on islands.We use genetic data for 25 Atlantic species and similarities among regional floras to analyse colonization, and test whether the genetic founder ... -
Long-distance plant dispersal to North Atlantic islands:colonization routes and founder effect
Alsos, Inger Greve; Ehrich, Dorothee; Eidesen, Pernille Bronken; Solstad, Heidi Merethe; Westergaard, Kristine Bakke; Schonswetter, Peter; Tribsch, Andreas; Birkeland, Siri; Elven, Reidar; Brochmann, Christian (Journal article; Peer reviewed, 2015)Long-distance dispersal (LDD) processes influence the founder effect on islands.We use genetic data for 25 Atlantic species and similarities among regional floras to analyse colonization, and test whether the genetic ... -
To valmue-arter på Svalbard, og litt om fjell- og polarvalmuer
Solstad, Heidi; Eidesen, Pernille Bronken; Little, Lorna; Elven, Reidar (Journal article; Peer reviewed, 2014)Morphological investigations confirm that there are two species of Papaver in Svalbard: P. dahlianum and P. cornwallisense. The two most distinctive diagnostic characters are the number of stamens and the length of papillae ... -
Vegetasjonskart ved Flatisen og Østerdalsisen, Rana, Nordland, med vegetasjonskart over Vesterdalen i 1:15 000: Saltfjellet/Svartisen-prosjektet. Botanisk delrapport nr. 3
Elven, Reidar (NTNU Vitenskapsmuseet Rapport Botanisk Serie, 0802-2992; 1978:1, Research report, 1978)