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.
1999
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Isabella BørjaSammendrag
Det er ikke registrert sammendrag
Rapport – Vurdering av skader på små granplanter etter voksbehandling av stammebasis.
Isabella Børja
Forfattere
Isabella BørjaSammendrag
Det er ikke registrert sammendrag
Sammendrag
Potteforsøk med ulike glyfosatformuleringer og glufosinatammonium - høstsprøyting av etablerte ugras ved redusert jordarbeiding
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Kirsten TørresenSammendrag
Det er ikke registrert sammendrag
Forfattere
Bjørn ØklandSammendrag
Information about larval ecology is fundamental in entomological research; however, in many insect species the larval habitat is still unknown. In the present project, Diptera insects were reared from various microhabitats and substrates of coniferous and deciduous forests of southern Norway. The material included 54 species that have not been reared earlier and 213 new species-microhabitat relationships. Many new records were found in dead wood of common tree species, such as Picea abies, Populus tremula and Fraxinus excelsior. Microhabitats associated with the root zone of windfelled trees showed the highest number of new species-microhabitat relationships.
Forfattere
Bjørn ØklandSammendrag
Det er ikke registrert sammendrag
Sammendrag
A field experiment was carried out to test the hypothesis that treatment of Norway spruce trees with the Ips typographus-transmitted blue-stain fungus Ceratocystis polonica enhances tree resistance to later mass attack by this bark beetle. Twenty-five mature trees were pre-treated by inoculating a non-lethal dose of the fungus into the bark, while 18 trees served as untreated controls. Three and a half weeks after treatment a bark beetle attack was initiated by attaching dispensers with I. typographus pheromone to the tree trunks. A significantly larger proportion (67%) of the control trees than of the pre-treated trees (36%) were killed by the beetle attack. The result is discussed in relation to recent results regarding defence mechanisms in Norway spruce trees.
Sammendrag
Det er ikke registrert sammendrag