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.
2006
Abstract
This study evaluates the decay and termite resistance of Scots pine (Pinus sylvestris L.) treated with 4-methoxytrityl tetrafluoroborate (MTFB).Decay resistance tests of unleached samples showed that 2%, 1.5% and 1% concentrations of MTFB (15.4kg/m3, 11.1kg/m3, and 7.4kg/m3, retention levels, respectively) gave less than 2% decay of Postia placenta and concentrations of 2% and 1.5% less than 2% decay of Coniophora puteana.Wood specimens treated with 4-methoxytrityl tetrafluoroborate solutions were not protected against the brown rot fungi after a 14-day severe leaching process, suggesting excessive leaching of the chemical from wood. Treatment with 2% concentration protected against subterranean termites, Coptotermes formosanus Shiraki based on mass losses in both leached and unleached wood specimens in comparison with lower concentration levels.These results suggest that 4-methoxytrityl tetrafluoroborate might be promising to protect wood being used outdoors against termite attack. However, 4-methoxytrityl tetrafluoroborate did not protect wood against fungal decay. Field tests are needed to observe the performance of 4-methoxytrityl tetrafluoroborate treated wood in ground contact.
Authors
Remigijus Bakys Rimvis Vasiliauskas Pia Barklund Katarina Ihrmark Jan StenlidAbstract
No abstract has been registered
Authors
Tiina Kuusela Johanna Witzell Annika NordinAbstract
No abstract has been registered
Authors
Jihong Liu Clarke Sonja Klemsdal Erling Fløistad Sissel Haugslien Anne Kathrine Hvoslef-Eide Roar Moe dag-ragnar blystadAbstract
No abstract has been registered
Authors
E. Shutova Frans Emil Wielgolaski S.R. Karlsen O. Makarova N* Berlina T* Filimonova E* Haraldsson Paul Erik Aspholm L. Flø K.A. HøgdaAbstract
No abstract has been registered
Abstract
Twenty-five tree species were recorded as hosts for five European Armillaria species in studies on forest ecosystems in Serbia. Armillaria was most frequently isolated from the conifers Picea abies and Abies alba and from the deciduous trees Fagus moesiaca and Quercus petraea. A. mellea and A. gallica coexisted in hardwood forests in northern and central parts of Serbia, while A. ostoyae and A. cepistipes were mostly present in coniferous forests in the southern mountain region of Serbia. The distribution depended on the Armillaria species, altitude, and the forest type.
Authors
Roar Moe Erling Fløistad dag-ragnar blystadAbstract
No abstract has been registered
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No abstract has been registered
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No abstract has been registered
Authors
Filip Moldan O. Janne Kjønaas Arne Olav Stuanes Richard Frederic WrightAbstract
Beginning in 1991, we have added nitrogen (N) to the 0.5-ha, N-poor, coniferous-forested catchment G2 NITREX at Gårdsjön, Sweden, to investigate the consequences of chronic elevated N deposition. We have added 40 kg N ha−1 yr−1 in fortnightly doses of NH4NO3 to the ambient 15 kg N ha−1 yr−1 by means of a sprinkling system. NO3 concentrations in runoff increased during 13 years from < 1 to 70 μeq L−1, and in 2004 comprised about 10% of N input. Inhibition of NO3 immobilisation due to increased availability of NH4 might explain the increased leaching of NO3. C and N pools in the forest floor increased but C/N ratio has not changed. The increase in NO3 leaching thus occurred independently of change in C/N ratio. The results from Gårdsjön demonstrate that increased leaching of inorganic N and decrease in C/N ratio respond to increased N deposition at greatly different time scales. NO3 concentrations increased in runoff although the C/N ratio of forest floor has not changed.