Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
1986
Authors
Mekjell MelandAbstract
No abstract has been registered
Authors
Oddvar HaveraaenAbstract
No abstract has been registered
Authors
Richard HorntvedtAbstract
No abstract has been registered
Authors
Kåre Olav Venn Martin Sandvik Bjørn LangerudAbstract
No abstract has been registered
Authors
Romanus C. Ishengoma Ludvik NagodaAbstract
No abstract has been registered
Authors
Eivind Bauger Arnstein OrlundAbstract
No abstract has been registered
Authors
Arne Olav Stuanes Gunnar Abrahamsen A. StormoenAbstract
No abstract has been registered
Authors
Peter Mulock Erik ChristiansenAbstract
The spruce bark beetle, Ips typographus, was induced to attack Norway spruce by means of pheromone dispensers. The degree of attack on each tree was recorded and the trees were later categorized as surviving or dying, according to the degree of sapwood blue-staining caused by the attacks. A threshold of successful attack was observed; i.e. above a certain number of attacks the trees were successfully invaded by the beetles and their mutualistic blue-stain fungi. The height of this threshold increased with increasing tree vigour, measured as the relative increment of the sapwood cross-sectional area.
Authors
Øystein JohnsenAbstract
No abstract has been registered
Authors
Kåre Olav VennAbstract
No abstract has been registered