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dc.contributor.authorRijal, Dilli Prasad
dc.contributor.authorAlm, Torbjørn
dc.contributor.authorNilsen, Lennart
dc.contributor.authorAlsos, Inger Greve
dc.date.accessioned2017-12-09T10:20:41Z
dc.date.available2017-12-09T10:20:41Z
dc.date.issued2017-05-30
dc.description.abstractThe impact of invasion on diversity varies widely and remains elusive. Despite the con- siderable attempts to understand mechanisms of biological invasion, it is largely un- known whether some communities’ characteristics promote biological invasion, or whether some inherent characteristics of invaders enable them to invade other com- munities. Our aims were to assess the impact of one of the massive plant invaders of Scandinavia on vascular plant species diversity, disentangle attributes of invasible and noninvasible communities, and evaluate the relationship between invasibility and ge- netic diversity of a dominant invader. We studied 56 pairs of Heracleum persicum Desf. ex Fisch.- invaded and noninvaded plots from 12 locations in northern Norway. There was lower native cover, evenness, taxonomic diversity, native biomass, and species richness in the invaded plots than in the noninvaded plots. The invaded plots had nearly two native species fewer than the noninvaded plots on average. Within the in- vaded plots, cover of H. persicum had a strong negative effect on the native cover, evenness, and native biomass, and a positive association with the height of the native plants. Plant communities containing only native species appeared more invasible than those that included exotic species, particularly H. persicum . Genetic diversity of H. per - sicum was positively correlated with invasibility but not with community diversity. The invasion of a plant community by H. persicum exerts consistent negative pressure on vascular plant diversity. The lack of positive correlation between impacts and genetic diversity of H. persicum indicates that even a small founder population may cause high impact. We highlight community stability or saturation as an important determinant of invasibility. While the invasion by H. persicum may decrease susceptibility of a plant community to further invasion, it severely reduces the abundance of native species and makes them more vulnerable to competitive exclusion.en_US
dc.descriptionSource at <a href=https://dx.doi.org/10.1002%2Fece3.3055> https://dx.doi.org/10.1002%2Fece3.3055 </a>en_US
dc.identifier.citationRijal DP, Alm T, Nilsen L, Alsos IGA. Giant invasive Heracleum persicum: Friend or foe of plant diversity?. Ecology and Evolution. 2017;7(13):4936-4950en_US
dc.identifier.cristinIDFRIDAID 1484840
dc.identifier.doi10.1002/ece3.3055
dc.identifier.issn2045-7758
dc.identifier.urihttps://hdl.handle.net/10037/11831
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalEcology and Evolution
dc.relation.projectIDArtsdatabanken: 248799en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/UNI-MUSEER/248799/Norway/ForBio-The Research School in Biosystematics//en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Plantegeografi: 496en_US
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480::Plant geography: 496en_US
dc.titleGiant invasive Heracleum persicum: Friend or foe of plant diversity?en_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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