Vis enkel innførsel

dc.contributor.authorSandvik, Hanno
dc.contributor.authorHilmo, Olga
dc.contributor.authorHenriksen, Snorre
dc.contributor.authorElven, Reidar
dc.contributor.authorÅsen, Per Arvid
dc.contributor.authorHegre, Hanne
dc.contributor.authorPedersen, Oddvar
dc.contributor.authorPedersen, Per Anker
dc.contributor.authorSolstad, Heidi
dc.contributor.authorVandvik, Vigdis
dc.contributor.authorWestergaard, Kristine Bakke
dc.contributor.authorØdegaard, Frode
dc.contributor.authorÅström, Sandra Charlotte Helene
dc.contributor.authorElven, Hallvard
dc.contributor.authorEndrestøl, Anders
dc.contributor.authorGammelmo, Øivind
dc.contributor.authorHatteland, Bjørn Arild
dc.contributor.authorSolheim, Halvor
dc.contributor.authorNordén, Björn
dc.contributor.authorSundheim, Leif
dc.contributor.authorTalgø, Venche
dc.contributor.authorFalkenhaug, Tone
dc.contributor.authorGulliksen, Bjørn
dc.contributor.authorJelmert, Anders
dc.contributor.authorOug, Eivind
dc.contributor.authorSundet, Jan Henry
dc.contributor.authorForsgren, Elisabet
dc.contributor.authorFinstad, Anders Gravbrøt
dc.contributor.authorHesthagen, Trygve H.
dc.contributor.authorNedreaas, Kjell Harald
dc.contributor.authorWienerroither, Rupert
dc.contributor.authorHusa, Vivian
dc.contributor.authorFredriksen, Stein
dc.contributor.authorSjøtun, Kjersti
dc.contributor.authorSteen, Henning
dc.contributor.authorHansen, Haakon
dc.contributor.authorHamnes, Inger Sofie
dc.contributor.authorKarlsbakk, Egil
dc.contributor.authorMagnusson, Christer
dc.contributor.authorYtrehus, Bjørnar
dc.contributor.authorPedersen, Hans Christian
dc.contributor.authorSwenson, Jon
dc.contributor.authorSyvertsen, Per Ole
dc.contributor.authorStokke, Bård Gunnar
dc.contributor.authorGjershaug, Jan Ove
dc.contributor.authorDolmen, Dag
dc.contributor.authorKjærstad, Gaute
dc.contributor.authorJohnsen, Stein Ivar
dc.contributor.authorJensen, Thomas Correll
dc.contributor.authorHassel, Kristian
dc.contributor.authorGederaas, Lisbeth
dc.PublishedEcological Solutions and Evidence. 2020, 1 .
dc.description.abstract1. 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 local biodiversity and ecosystem functioning, and, ultimately, to biotic homogenisation. 2. We risk‐assessed all alien plants, animals, fungi and algae, within certain delimitations, that are known to reproduce in Norway. Mainland Norway and the Arctic archipelago of Svalbard plus Jan Mayen were treated as separate assessment areas. Assessments followed the Generic Ecological Impact Assessment of Alien Species (GEIAA) protocol, which uses a fully quantitative set of criteria. 3. A total of 1,519 species were risk‐assessed, of which 1,183 were species reproducing in mainland Norway. Among these, 9% were assessed to have a severe impact, 7% high impact, 7% potentially high impact, and 49% low impact, whereas 29% had no known impact. In Svalbard, 16 alien species were reproducing, one of which with a severe impact. 4. The impact assessments also covered 319 so‐called door‐knockers, that is, species that are likely to establish in Norway within 50 years, and 12 regionally alien species. Of the door‐knockers, 8% and 10% were assessed to have a severe and high impact, respectively. 5. The impact category of most species was driven by negative interactions with native species, transformation of threatened ecosystems, or genetic contamination. The proportion of alien species with high or severe impact varied significantly across the different pathways of introduction, taxonomic groups, time of introduction and the environments colonised, but not across continents of origin. 6. Given the large number of alien species reproducing in Norway and the preponderance of species with low impact, it is neither realistic nor necessary to eradicate all of them. Our results can guide management authorities in two ways. First, the use of quantitative assessment criteria facilitates the prioritisation of management resources across species. Second, the background information collected for each species, such as introduction pathways, area of occupancy and ecosystems affected, helps designing appropriate management measures.en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.subjectInvasion biologyen_US
dc.titleAlien species in Norway: Results from quantitative ecological impact assessmentsen_US
dc.title.alternativeFremmede arter i Norge: resultater fra kvantitative økologiske risikovurderingeren_US
dc.typeJournal articleen_US
dc.rights.holderCopyright 2020 The Authors.en_US
dc.source.journalEcological Solutions and Evidenceen_US
dc.relation.projectArtsdatabanken: Fremmede arteren_US
dc.subject.nsiVDP::Økologi: 488en_US
dc.subject.nsiVDP::Ecology: 488en_US
dc.identifier.citationEcological Solutions and Evidence. 2020, 1 (1), e12006.en_US

Tilhørende fil(er)


Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Navngivelse 4.0 Internasjonal
Med mindre annet er angitt, så er denne innførselen lisensiert som Navngivelse 4.0 Internasjonal