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.
2007
Authors
Adam ParuchAbstract
No abstract has been registered
Authors
Gudbrand Lien J.B. Hardaker Leif Jarle Asheim Ståle StørdalAbstract
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Abstract
Host tree terpenes can influence attraction of conifer-infesting bark beetles to their aggregation pheromones, and both synergistic and inhibitory effects have been reported. We tested a gradient of ratios of (–)-α-pinene, the predominant monoterpene in Norway spruce, to the pheromone of Ips typographus, a major pest of Norway spruce. Attraction of I. typographus increased as the release rate of (–)-α-pinene increased. The two highest (–)-α-pinene : pheromone ratios (526 : 1 and 2595 : 1) attracted twice as many I. typographus as pheromone alone, whereas low to intermediate ratios (56 : 1, 274 : 1) did not differ from pheromone alone. Our results are in agreement with a proposed model, which suggests that bark beetles display unique response profiles to host terpenes depending on the physiological condition of the host trees that they typically colonize. Ips typographus, which is an aggressive species capable of colonizing and killing healthy trees, showed an increased attraction to monoterpene : pheromone ratios, and this may be high enough to inhibit attraction of less aggressive beetle species typically colonizing dead, dying or stressed trees. Attraction of associates of I. typographus was also modified by (–)-α-pinene. Ips duplicatus, a competitor of I. typographus, showed increased attraction to the pheromone of I. typographus across all concentrations of (–)-α-pinene.
Authors
Guro Ådnegard Skarstad Laura Terragni Hanne TorjusenAbstract
No abstract has been registered
Authors
Sanna Koutaniemi Tino Warinowski Anna Karkonen Edward Alatalo Carl Gunnar Fossdal Pekka Saranpaa Tapio Laakso Kurt V. Fagerstedt Liisa K. Simola Lars Paulin Stephen Rudd Teemu H. TeeriAbstract
No abstract has been registered
Authors
Rune Slimestad Torgils Fossen Ingunn Molund VågenAbstract
Slimestad, Rune har oppgitt Særheim Research Centre som adresse i posten/aa
2006
Abstract
A questionnaire survey was conducted at the university hospital in Trondheim, Norway in December 2005. In relation to former questionnaires conducted at the hospital, patients and guests were much more satisfied with the food served, especially potatoes and vegetables. Patients and guest express that food is important for their health and well-being. Good taste, appearance and right nutrition were understood as important qualities of food. The absence of pesticides, artificial fertilizers and preservatives in food were ranked as more important than organic production of food. About 80 % of the respondents were positive or really positive to the use of organic food at the hospital.