Reidar Elven

• Elven, Reidar; Bjorå, Charlotte Sletten; Fremstad, Eli; Hegre, Hanne & Solstad, Heidi (2022). Bakgrunn for endringer i ‘Norsk flora’ 2022 (1) . Blyttia : Norsk botanisk forenings tidsskrift. ISSN 0006-5269. 80(2), s. 118–135.
• Nygård, Malene Østreng; Kemppainen, Petri; Speed, James D. M.; Elven, Reidar; Flatberg, Kjell Ivar & Galten, Leif Persen [Vis alle 9 forfattere av denne artikkelen] (2021). Combining population genomics and ecological niche modeling to assess taxon limits between Carex jemtlandica and C. lepidocarpa. Journal of Systematics and Evolution. ISSN 1674-4918. 59(4), s. 627–641. doi: 10.1111/jse.12743. Fulltekst i vitenarkiv
• Nowak, Michael; Pedersen, Anne Tiril Myhre; Brysting, Anne Krag; Schrøder-Nielsen, Audun; Elven, Reidar & Bjorå, Charlotte Sletten (2020). Testing hypotheses of hybrid origins for two seashore species of Carex section Phacocystis (Cyperaceae). Botanical journal of the Linnean Society. ISSN 0024-4074. 194(1), s. 110–117. doi: 10.1093/botlinnean/boaa030. Fulltekst i vitenarkiv
• Sandvik, Hanno; Hilmo, Olga; Henriksen, Snorre; Elven, Reidar; Åsen, Per Arvid & Hegre, Hanne [Vis alle 51 forfattere av denne artikkelen] (2020). Fremmede arter i Norge: resultater fra kvantitative økologiske risikovurderinger. Ecological Solutions and Evidence. ISSN 2688-8319. 1(1). doi: 10.1002/2688-8319.12006. Fulltekst i vitenarkiv Vis sammendrag

  1. Globalisering, handel og transport fører til en dramatisk økning i spredningen av fremmede arter. Noen fremmede arter er skadelige og truer det stedegne naturmangfoldet. Lokalt kan dette medføre irreversible endringer i det lokale biologiske mangfoldet og økosystemenes funksjon; globalt en homogenisering av artssammensetningen. 2. Vi har gjennomført risikovurderinger av alle fremmede planter, dyr, sopper og alger som reproduserer i Norge og oppfyller visse avgrensninger. Svalbard og Jan Mayen ble behandla som et eget vurderingsområde, adskilt fra Fastlands‐Norge. Risikovurderingene ble gjort i tråd med GEIAA (Generic Ecological Impact Assessment of Alien Species), som benytter et rent kvantitativt kriteriesett. 3. Totalt ble 1519 arter risikovurdert, hvorav 1183 reproduserte i Fastlands‐Norge. Av disse ble 9 % vurdert til å utgjøre en svært høy risiko, 7 % en høy risiko, 7 % en potensielt høy risiko, 49 % en lav risiko og 29 % ingen kjent risiko. På Svalbard forekom 16 reproduserende fremmede arter, hvorav én med svært høy risiko. 4. Risikovurderingene omfatta også 319 såkalte dørstokkarter, dvs. fremmede arter som antas å kunne etablere seg i Norge innen 50 år, samt 12 regionalt fremmede arter. Blant dørstokkartene ble 8 % og 10 % vurdert til å utgjøre en svært høy respektive høy risiko. 5. For de fleste arter ble risikokategorien bestemt av artenes interaksjoner med stedegne arter, tilstandsendringer i trua naturtyper eller genetisk forurensning. Andelen av fremmede arter med høy eller svært høy risiko varierte signifikant på tvers av ulike introduksjonsveier, artsgrupper, tidspunkt for introduksjon og koloniserte naturtyper, men ikke på tvers av opphavsområder. 6. Gitt det store antallet av fremmede arter som reproduserer i Norge, og overvekten av arter som har lav risiko, er det verken realistisk eller nødvendig å utrydde alle. Resultatene våre kan hjelpe forvaltningsmyndighetene på to måter. For det første gjør bruken av kvantitative kriterier det lettere å prioritere ressurser på tvers av arter. For det andre kan passende forvaltningstiltak utarbeides på grunnlag av den innsamla bakgrunnsinformasjonen om artene, f.eks. deres spredningsveier, forekomstareal og berørte naturtyper.

• Sandvik, Hanno; Dolmen, Dag; Elven, Reidar; Falkenhaug, Tone; Forsgren, Elisabet & Hansen, Haakon [Vis alle 51 forfattere av denne artikkelen] (2019). Alien plants, animals, fungi and algae in Norway: an inventory of neobiota. Biological Invasions. ISSN 1387-3547. 21(10), s. 2997–3012. doi: 10.1007/s10530-019-02058-x. Fulltekst i vitenarkiv Vis sammendrag

  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 constitute c. 3% of all species known to be stably reproducing in Norway. These figures are higher than expected from Norway’s latitude, which may be due a combination of climatic and historical factors, as well as sampling effort. Most of the naturalised neobiota were plants (71%),followed by animals (21%) and fungi (8%). The main habitat types colonised were open lowlands (79%), urban environments (52%) and woodlands (42%). The main areas of origin were Europe (67%), North America (15%) and Asia (13%). For most taxa, the rate of novel introductions seems to have been increasing during recent decades. Within Norway, the number of alien species recorded per county was negatively correlated with latitude and positively correlated with human population density. In the high-Arctic territories under Norwegian sovereignty, i.e. Svalbard and Jan Mayen, 104 alien species were recorded, of which 5 were naturalised.

• Sandvik, Hanno; Hilmo, Olga; Finstad, Anders Gravbrøt; Hegre, Hanne; Moen, Toril Loennechen & Rafoss, Trond [Vis alle 10 forfattere av denne artikkelen] (2019). Generic ecological impact assessment of alien species (GEIAA): the third generation of assessments in Norway. Biological Invasions. ISSN 1387-3547. 21(9), s. 2803–2810. doi: 10.1007/s10530-019-02033-6. Fulltekst i vitenarkiv Vis sammendrag

  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, and six criteria that capture the ecological effects of alien species. The threshold values for all criteria are numerically defined, rendering the set of criteria fully quantitative. Genericity is ensured by using criteria that are applicable to all taxonomic groups and in all habitats. In being generic, quantitative, ecological and normatively neutral, the criteria were inspired by the international Red List criteria. Capturing both invasion potential and effect, GEIAA can be regarded as a full ecological impact assessment. The assessment procedure contains guidelines on documentation, the collection of background information, the handling of uncertainty, and quality assurance. GEIAA represents the second revision, and thus the third generation, of assessment methodology in Norway. It has recently been used to carry out more than 2500 impact assessments of alien species in Norway and Sweden.

• Elven, Reidar; Pedersen, Anne Tiril Myhre & Bjorå, Charlotte Sletten (2017). The nomenclature of two hybrid taxa in Carex sect. Vesicariae (Cyperaceae) currently assigned as Carex rostrata var. borealis and Carex stenolepis. Phytotaxa. ISSN 1179-3155. 324(1), s. 63–72. doi: 10.11646/phytotaxa.324.1.4. Fulltekst i vitenarkiv
• Birkeland, Siri; Skjetne, Idunn Elisabeth Borgen; Brysting, Anne Krag; Elven, Reidar & Alsos, Inger Greve (2017). Living on the edge: conservation genetics of seven thermophilous plant species in a high Arctic archipelago. AoB Plants. ISSN 2041-2851. 9(1). doi: 10.1093/aobpla/plx001. Fulltekst i vitenarkiv
• Vandvik, Vigdis; Elven, Reidar & Töpper, Joachim Paul (2016). Seedling recruitment in subalpine grassland forbs: Predicting field regeneration behaviour from lab germination responses. Botany. ISSN 1916-2790. 95(1), s. 73–88. doi: 10.1139/cjb-2016-0022.
• Pedersen, Anne Tiril Myhre; Nowak, Michael; Brysting, Anne Krag; Elven, Reidar & Bjorå, Charlotte Sletten (2016). Hybrid Origins of Carex rostrata var. borealis and C. stenolepis, Two Problematic Taxa in Carex section Vesicariae (Cyperaceae). PLOS ONE. ISSN 1932-6203. 11(10), s. 1–18. doi: 10.1371/journal.pone.0165430. Fulltekst i vitenarkiv
• Alsos, Inger Greve; Ware, Christopher & Elven, Reidar (2015). Past Arctic aliens have passed away, current ones may stay. Biological Invasions. ISSN 1387-3547. 17(11), s. 3113–3123. doi: 10.1007/s10530-015-0937-9. Fulltekst i vitenarkiv
• Alsos, Inger Greve; Ehrich, Dorothee; Eidesen, Pernille Bronken; Solstad, Heidi Merethe; Westergaard, Kristine Bakke & Schonswetter, Peter [Vis alle 10 forfattere av denne artikkelen] (2015). Long-distance plant dispersal to North Atlantic islands: colonization routes and founder effect. AoB Plants. ISSN 2041-2851. 7(1), s. 1–19. doi: 10.1093/aobpla/plv036. Fulltekst i vitenarkiv Vis sammendrag

  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 effect on five islands is associated with dispersal distance, island size and species traits. Most species colonized postglacially via multiple dispersal events from several source regions situated 280 to .3000 km away, and often not from the closest ones. A strong founder effect was observed for insect-pollinated mixed maters, and it increased with dispersal distance and decreased with island size in accordance with the theory of island biogeography. Only a minor founder effect was observed for wind-pollinated outcrossing species. Colonization patterns were largely congruent, indicating that despite the importance of stochasticity, LDD is mainly determined by common factors, probably dispersal vectors. Our findings caution against a priori assuming a single, close source region in biogeographic analyses. Amplified fragment length polymorphism (AFLP); dispersal vector; founder effect; genetic diversity; islands; long-distance dispersal (LDD); postglacial; species traits.

• Willerslev, E; Davison, J; Moora, M; Zobel, M; Coissac, E & Edwards, ME [Vis alle 50 forfattere av denne artikkelen] (2014). Fifty thousand years of Arctic vegetation and megafaunal diet. Nature. ISSN 0028-0836. 506(7486), s. 47–51. doi: 10.1038/nature12921.
• Solstad, Heidi; Eidesen, Pernille Bronken; Little, Lorna & Elven, Reidar (2014). To valmue-arter på Svalbard, og litt om fjell- og polarvalmuer. Blyttia : Norsk botanisk forenings tidsskrift. ISSN 0006-5269. 72(3), s. 187–196. Fulltekst i vitenarkiv
• Ertter, Barbara; Elven, Reidar & Murray, David F. (2013). Changes to Potentilla rubricaulis s.l., P. hookeriana (Rosaceae), and erstwhile synonyms in Flora of North America North of Mexico. Journal of the Botanical Research Institute of Texas. ISSN 1934-5259. 7, s. 703–711.
• Elven, Reidar & Engelskjøn, Torstein (2013). Taraxacum tornense T.C.E.Fr. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 413–414.
• Elven, Reidar & Engelskjøn, Torstein (2013). Taraxacum norvegicum (Dahlst.) Dahlst. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 412–413.
• Elven, Reidar & Engelskjøn, Torstein (2013). Taraxacum hjeltii (Dahlst.) Dahlst. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 410–412.
• Nordal, Inger; Marcussen, Thomas & Elven, Reidar (2013). Viola rupestris F.W.Schmidt. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 453–455. doi: 10.1111/j.1365-2699.2005.01257.x.
• Elven, Reidar (2013). Veronica longifolia L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 442–444.
• Elven, Reidar (2013). Utricularia ochroleuca R.W.Hartm. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 436–437.
• Elven, Reidar (2013). Utricularia intermedia Hayne. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 434–436.
• Elven, Reidar (2013). Urtica dioica L. subsp. sondenii (Simmons) Hyl. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 432–434.
• Elven, Reidar (2013). Trisetum subalpestre (Hartm.) Neuman. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 428–429.
• Elven, Reidar (2013). Tripleurospermum maritimum (L.) W.D.J.Koch subsp. phaeocephalum (Rupr.) Hämet-Ahti. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 425–428.
• Elven, Reidar (2013). Thalictrum kemense Fr. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 416–418.
• Elven, Reidar (2013). Tephroseris integrifolia (L.) Holub. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 414–416.
• Elven, Reidar (2013). Stellaria humifusa Rottb. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 402–404.
• Elven, Reidar (2013). Sparganium gramineum Georgi. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 395–396.
• Elven, Reidar (2013). Sparganium emersum Rehm. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 393–395.
• Elven, Reidar (2013). Sorbus aucuparia L. subsp. glabrata (Wimm. & Grab.) Hayek. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 391–393.
• Elven, Reidar (2013). Silene tatarica (L.) Pers. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 389–391.
• Elven, Reidar (2013). Silene involucrata (Cham. & Schltdl.) Bocquet. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 387–389.
• Danielsen, Anders & Elven, Reidar (2013). Scheuchzeria palustris L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 386–387.
• Elven, Reidar (2013). Salix starkeana Willd. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 382–384.
• Elven, Reidar (2013). Salix phylicifolia L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 380–382.
• Elven, Reidar (2013). Salix myrtilloides L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 375–377.
• Elven, Reidar (2013). Salix myrsinifolia Salisb. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 370–375.
• Elven, Reidar (2013). Salix hastata L. subsp. subintegrifolia (Flod.) Flod. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 368–370.
• Elven, Reidar (2013). Salix cinerea L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 366–368.
• Elven, Reidar (2013). Salix bebbiana Sarg. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 363–366.
• Elven, Reidar (2013). Sagittaria sagittifolia L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 358–361.
• Elven, Reidar (2013). Rumex graminifolius Rudolph ex Lamb. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 356–358.
• Elven, Reidar (2013). Rumex aquaticus L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 352–356.
• Elven, Reidar (2013). Rumex acetosa L. subsp. lapponicus (Hiitonen) Czernov s. lat. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 350–352.
• Elven, Reidar (2013). Rubus arcticus L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 347–350.
• Elven, Reidar (2013). Ribes nigrum L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 339–342.
• Danielsen, Anders & Elven, Reidar (2013). Rhododendron tomentosum (Stokes) Harmaja. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 336–339.
• Elven, Reidar (2013). Ranunculus subborealis Tzvelev subsp. subborealis. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 334–336.
• Elven, Reidar (2013). Ranunculus peltatus Schrank. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 331–334.
• Elven, Reidar (2013). Ranunculus confervoides (Fr.) Fr. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 328–331.
• Elven, Reidar (2013). Pyrola rotundifolia L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 326–328.
• Elven, Reidar (2013). Puccinellia phryganodes (Trin.) Scribn. & Merr. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 319–321.
• Elven, Reidar (2013). Puccinellia finmarchica Elven & Borgen ined. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 317–319. doi: 10.1111/j.1756-1051.2000.tb00752.x.
• Elven, Reidar (2013). Primula stricta Hornem. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 314–316.
• Elven, Reidar (2013). Primula nutans Georgi. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 311–314.
• Elven, Reidar (2013). Potentilla anserina L. subsp. groenlandica Tratt. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 309–311.
• Elven, Reidar (2013). Potamogeton praelongus Wulfen. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 305–307.
• Elven, Reidar (2013). Potamogeton perfoliatus L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 304–305.
• Elven, Reidar (2013). Poa palustris L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 291–293.
• Elven, Reidar (2013). Persicaria foliosa (H.Lindb.) Kitag. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 280–282.
• Elven, Reidar (2013). Oxytropis deflexa (Pall.) DC. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 273–275.
• Elven, Reidar (2013). Myriophyllum verticillatum L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 266–268.
• Elven, Reidar (2013). Myriophyllum sibiricum Kom. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 264–266.
• Elven, Reidar (2013). Myosotis decumbens Host. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 258–261.
• Elven, Reidar (2013). Mulgedium sibiricum (L.) Cass. ex Less. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 257–258.
• Elven, Reidar (2013). Moehringia lateriflora (L.) Fenzl. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 254–255.
• Elven, Reidar (2013). Lycopodium clavatum L. subsp. monostachyon (Grev. & Hook.) Selander. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 252–254.
• Elven, Reidar (2013). Lycopodium annotinum L. subsp. alpestre (Hartm.) Á. & D.Löve. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 250–252.
• Wischmann, Finn & Elven, Reidar (2013). Luzula pallescens Sw. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 248–250.
• Elven, Reidar (2013). Lathyrus palustris L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 245–248.
• Wischmann, Finn & Elven, Reidar (2013). Juncus stygius L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 242–243.
• Elven, Reidar (2013). Juncus gerardii Loisel. subsp. atrofuscus (Rupr.) Printz. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 240–241.
• Elven, Reidar (2013). Hippuris tetraphylla L.f. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 235–236.
• Elven, Reidar (2013). Hippuris lanceolata Retz. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 232–235.
• Elven, Reidar (2013). Hierochloë odorata (L.) Wahlenb. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 229–232.
• Elven, Reidar (2013). Hierochloë hirta (Schrank) Borbás. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 227–229.
• Elven, Reidar (2013). Gymnocarpium continentale (Petrov) Pojark. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 223–225.
• Elven, Reidar (2013). Gentianopsis detonsa (Rottb.) Ma. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 217–219.
• Elven, Reidar (2013). Gentianella amarella (L.) Börner. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 215–217.
• Wischmann, Finn & Elven, Reidar (2013). Galium trifidum L. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 212–214.
• Elven, Reidar (2013). Eurybia sibirica (L.) G.L.Nesom. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 210–212.
• Elven, Reidar (2013). Eriophorum x medium Andersson. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 203–205.
• Elven, Reidar (2013). Eriophorum brachyantherum Trautv. & C.A.Mey. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 200–201.
• Elven, Reidar (2013). Epilobium laestadii Kytöv. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 196–198.
• Elven, Reidar (2013). Elymus mutabilis (Drobow) Tzvelev. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 194–196.
• Elven, Reidar (2013). Elymus fibrosus (Schrenk) Tzvelev. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 192–194.
• Elven, Reidar (2013). Eleocharis palustris (L.) Roem. & Schult. subsp. palustris. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 189–190.
• Elven, Reidar (2013). Eleocharis mamillata H.Lindb. subsp. austriaca (Hayek) Strandhede. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 187–189.
• Elven, Reidar (2013). Draba cinerea Adams. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 180–182.
• Elven, Reidar (2013). Diphasiastrum complanatum (L.) Holub. I Elven, Reidar; Fremstad, Eli & Pedersen, Oddvar (Red.), Distribution maps of Norwegian vascular plants. IV The eastern and northeastern elements. Akademika forlag. ISSN 978-82-321-0246-4. s. 174–178.

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• Elven, Reidar & Fremstad, Eli (2018). Salix - vier, selje og pil i Norge. NTNU Vitenskapsmuseet. ISBN 978-82-8322-153-4. 82(1). 715 s.

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• Sandvik, Hanno; Hilmo, Olga; Henriksen, Snorre; Elven, Reidar; Åsen, Per Arvid & Hegre, Hanne [Vis alle 51 forfattere av denne artikkelen] (2020). Data from: Ecological impact assessments of alien species in Norway.
• Vandvik, Vigdis; Elven, Reidar & Töpper, Joachim Paul (2016). Data from: Seedling recruitment in subalpine grassland forbs: Predicting field regeneration behaviour from lab germination responses.
• Bjorå, Charlotte Sletten; Nordal, Inger & Elven, Reidar (2016). Tidenes første panarktiske Flora. [Fagblad]. Apollon.
• Alsos, Inger Greve; Ehrich, Dorothee; Eidesen, Pernille Bronken; Tribsch, Andreas; Schonswetter, Peter & Westergaard, Kristine Bakke [Vis alle 13 forfattere av denne artikkelen] (2015). Colonization of Arctic islands revealed by modern and ancient DNA analyses.
• Grundt, Hanne H.; Brysting, Anne Krag & Elven, Reidar (2015). Storlind Tilia platyphyllos i Østfold og Norge: Rød eller svart? Blyttia : Norsk botanisk forenings tidsskrift. ISSN 0006-5269. 73, s. 13–22.
• Alsos, Inger Greve; Ehrich, Dorothee; Eidesen, Pernille Bronken; Pellisier, Loic; Tribsch, Andreas & Schonswetter, Peter [Vis alle 14 forfattere av denne artikkelen] (2014). Effects of past and future climate change on plant colonization of arctic Islands.
• Alsos, Inger Greve; Ehrich, Dorothee; Eidesen, Pernille Bronken; Schonswetter, Peter; Tribsch, Andreas & Westergaard, Kristine Bakke [Vis alle 14 forfattere av denne artikkelen] (2014). Effects of past and future climate change on plant colonization in the Arctic: insights gained from phylogeography, species distribution modelling and ancient DNA.
• Alsos, Inger Greve; Ehrich, Dorothee; Eidesen, Pernille Bronken; Pellisier, Löic; Tribsch, Andreas & Schonswetter, Peter [Vis alle 14 forfattere av denne artikkelen] (2014). Effects of past and future climate change on plant colonization of arctic islands.

Se alle arbeider i Cristin