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.
1993
Authors
Tore SkrøppaAbstract
No abstract has been registered
Authors
Lars StrandAbstract
No abstract has been registered
Lecture – Assessment of bias in monitoring of forest decline
Mette Goul Thomsen, Christian Nellemann
Authors
Mette Goul Thomsen Christian NellemannAbstract
No abstract has been registered
Authors
Svein SolbergAbstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Finn Roll-HansenAbstract
No abstract has been registered
Authors
Martti Lindgren Maija SalemaaAbstract
No abstract has been registered
Authors
Richard HorntvedtAbstract
No abstract has been registered
Authors
Oddvar SkreAbstract
The measurements were carried out with Warburg manometric technique on excised leaf discs. The plants had been grown for six weeks in varying temperature in continuous light. Photosynthetic rates were also measured at elevated CO2 level. The relationship between gas exchange rates and chemical composition was studied by multiple regression analysis. In accordance with earlier studies a strong acclimation effect of temperature was found. Long-term low temperature treatment caused a reduction in photosynthetic rates in all birch populations, and increased respiration rates in the two broadleaf species. There was a strong reduction in the temperature coefficient of dark respiration with decreasing acclimation temperatures in mountain birch leaves from southern populations. There was also a relatively high soluble sugar content and low chlorophyll content in low temperature treated plants. Birch from Central Norway (62 N) showed relatively high net photosynthesis rates compared with the populations from southern Norway (60 N) and higher chlorophyll content per unit area.
Authors
Ø. Austarå Fred Midtgaard T. SætherAbstract
No abstract has been registered