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dc.contributor.authorAlm, Torbjørn
dc.contributor.authorDeschamps, Amandine Maria
dc.contributor.authorOften, Anders
dc.coverage.spatialNord-NOrge, North Norway, Tromsø, Kvaløya, Tromsnb_NO
dc.date.accessioned2017-11-05T15:27:38Z
dc.date.available2017-11-05T15:27:38Z
dc.date.created2016-06-17T12:55:37Z
dc.date.issued2016
dc.identifier.citationBlyttia : Norsk botanisk forenings tidsskrift. 2016, 74 (2), 109-117.nb_NO
dc.identifier.issn0006-5269
dc.identifier.urihttp://hdl.handle.net/11250/2464093
dc.description.abstractJacobaea alpina (syn. Senecio alpinus, S. cordatus) and J. subalpina (syn. Senecio subalpinus) are native to the mountains of Central Europe. Both were cultivated as ornamentals in late 19th century Tromsø. From the early 1990’s onwards, numerous Jacobaea stands have been noticed outside gardens, in particular at Tromsø, but extending from Lenvik in central Troms northwards to Alta in Finnmark. Almost all specimens have been labeled as Senecio cordatus, i.e. Jacobaea alpina, but both the history of cultivation and the highly variable morphology of the plants suggest that this is unlikely. We have carried out a revision of the existing material, and re-visited a number of sites of supposed J. alpina and J. subalpina. With a single exception, it is not possible to assign the plants now found in North Norway to either species. Instead, they should probably be interpreted as a locally formed hybrid (J. alpina × subalpina) – which, unfortunately, turns out to be an aggressive alien. There are numerous stands in Tromsø, and at Slettaelva (Kvaløya island), a single stand comprises thousands or perhaps tens of thousands of plants, invading meadows, birch forest and in particular the damp areas along a brook.nb_NO
dc.language.isonobnb_NO
dc.subjecttromsøsvineblomnb_NO
dc.subjectJacobaea alpina × subalpinanb_NO
dc.titlePestplanten tromsøsvineblom Jacobaea alpina x subalpina i Norge - opphav og statusnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.subject.nsiVDP::Vegetasjonshistorie: 495nb_NO
dc.subject.nsiVDP::Vegetation history: 495nb_NO
dc.subject.nsiVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480nb_NO
dc.source.pagenumber109-117nb_NO
dc.source.volume74nb_NO
dc.source.journalBlyttia : Norsk botanisk forenings tidsskriftnb_NO
dc.source.issue2nb_NO
dc.identifier.cristin1362179
cristin.unitcode7511,6,0,0
cristin.unitnameOslo
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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