Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2018
Forfattere
Trygve S. AamlidSammendrag
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Forfattere
Trygve S. AamlidSammendrag
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Sammendrag
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Forfattere
Trygve S. Aamlid Lars T. Havstad Ingunn M. Vågen Erling Stubhaug Tatsiana Espevig Ellen Johanne SvalheimSammendrag
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Forfattere
Florencia A. Yannelli Gerhard Karrer Rea Hall Johannes Kollmann Tina HegerSammendrag
Question Disturbed areas offer great opportunities for restoring native biodiversity, but they are also prone to invasion by alien plants. Following the limiting similarity hypothesis, we address the question of whether or not similarity of plant functional traits helps developing seed mixtures of native communities with high resistance to invasive species at an early stage of restoration. Location Centre of Greenhouses and Laboratories Dürnast, Technische Universität München, Freising, Germany. Methods Using a system of linear equations, we designed native communities maximizing the similarity between the native and two invasive species according to ten functional traits. We used native grassland plants, two invasive alien species that are often problematic in disturbed areas (i.e., Ambrosia artemisiifolia and Solidago gigantea) and trait information obtained from databases. The two communities were then tested for resistance against establishment of the two invaders separately in a greenhouse experiment. We measured height of the invasive species and above‐ground biomass, along with leaf area index, 4 and 8 months after sowing respectively. Results Both invasive species were successfully reduced by the native community designed to suppress S. gigantea dominated by small‐seeded species. These results could be considered as partial support for the limiting similarity hypothesis. However, given the success of this mixture against both invasive species, suppression was better explained by a seed density effect resulting from the smaller seed mass of the native species included in this mixture. Further, the dominance of a fast‐developing competitive species could also contribute to its success. Conclusions There was no unequivocal support for the limiting similarity hypothesis in terms of the traits selected. Instead we found that increasing seeding density of native species and selecting species with a fast vegetative development is an effective way to suppress invasive plants during early stages of restoration. If limiting similarity is used to design communities for restoration, early life‐history traits should be taken into account.
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