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.
2025
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Sammendrag
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Forfattere
Gabriela WagnerSammendrag
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Sammendrag
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Forfattere
Gabriela WagnerSammendrag
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Forfattere
Gabriela WagnerSammendrag
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Forfattere
Stein Joar Hegland Hedda Victoria Barfod Ørbæk Bjørn Arild Hatteland Aud Helen Halbritter Mark Andrew Kusk GillespieSammendrag
Plant dependence on pollinator-aided reproduction may decrease with colder andmore unstable climates, for example at higher elevations. Correspondingly, plant pop-ulations may also be more pollen limited in alpine than in lowlands or under moreoptimal conditions. However, such expectations have largely been investigated acrossspecies, and rarely among populations within a species. The findings of such stud-ies may have implications for predictions of plant sexual reproduction in a changingclimate. We combined a bagging experiment of Vaccinium myrtillus (bilberry) flowerswith a supplemental pollen experiment at three sites along an elevational gradient at100, 500 and 900 m a.s.l. in a mild boreal climate, by the Sognefjord, Norway. Ourgoal was to investigate the variation in reproductive success and pollen limitation ina functionally important plant species, V. myrtillus, and to test whether the outcomesmay be dependent on insect flower visitation and climatic context (i.e. temperaturerelated to elevation). Our experimental treatments clearly affected reproductive suc-cess of V. myrtillus. Bagging of flowers reduced the fruit set close to zero, whereassupplemental pollination resulted in 30% higher fruit set. However, fruit set effectsappeared to be independent of elevation in the current study. Total number of seedswas highest at the optimal mid-site location, but here the proportion of mature seedswas also lowest. Our results clearly showed that the reproductive success of V. myrtillusdepends on pollinator visitation and benefits from extra pollen supply, but that theseeffects appeared to be independent of the climatic context