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.
2025
Vitenskapelig kapittel – Growth and Yield
Simone Bianchi, Andreas Brunner, Kjersti Holt Hanssen, ...
Forfattere
Simone Bianchi Andreas Brunner Kjersti Holt Hanssen Hannu Hökkä Urban Nilsson Nils Fahlvik Jari HynynenSammendrag
• There is still a lack of knowledge on growth and yield (G&Y) in continuous cover forestry (CCF). Most published studies are on the selection system with Norway spruce. • Published comparisons of the selection system with rotation forestry (RF) show contrasting results. Generally, there seems to be a trend toward faster stand growth in RF. • However, there are many uncertainties due to several confounding factors, such as stand-density effects, site-quality classification, and/or growth models used. Most studies do not properly account for all these factors, making it difficult to generalise their results. • The optimal stand density trade off for the selection system between stand growth and recruitment should be better investigated. Preliminary results show this could strongly affect stand growth. • There is even less knowledge related to G&Y during conversion, a potential bottleneck for full implementation of CCF in the region.
Forfattere
Mekjell Meland Oddmund Frøynes Darius Kviklys Uros Gasic Uroš Gašić Tomislav Tosti Milica Fotiric AksicSammendrag
No abstract has been registered
Vitenskapelig kapittel – Biochar in forestry
Marjo Palviainen, Kjersti Holt Hanssen, Annamari Laurén
Sammendrag
No abstract has been registered
Sammendrag
Post-Consumer Wood (PCW) is a valuable resource that could substitute virgin wood in many applications. However, its integration into the wood processing chain requires detailed information on composition, content of contaminants, size, and shape. Here, PCW collected over eight months from three sorting facilities in southeastern Norway was analyzed for suitability in recycling. Shredded PCW from 24 samples was manually sorted based on material origin, analyzed for heavy metal concentrations, and the particle geometry was measured with an automated laser scanner. Based on the results, 39–67 % of the mixed PCW was made up by clean wood particles suitable for recycling. Wood-based panels within the PCW were not only a source of contaminants (adhesives, coatings) but also decreased the length-to-width ratio of the resulting particles and chips. The median heavy metal concentrations did not exceed the limit values issued by the European Panel Federation. However, individual samples and the fine fraction (< 8 mm) exceeded these limit values. Manual pre-sorting before shredding into chips increased the share of clean wood particles, prevented elevated fiberboard contents and significantly reduced heavy metal concentrations.
Sammendrag
European canker developing in young apple orchards may have been initiated in the nursery. Artifcial inoculation of Neonectria ditissima was carried out at time of heading back and manipulating of branch angles in the second year of nursery phase sized trees of 10 apple cultivars, either T-budded or grafted (with or without interstem). The trees were followed for two growing seasons and canker was found on 10% of the trees inoculated in wounds from heading back of the top shoots and on 24% of the trees inoculated in cracks from bending side branches. About 50% of those trees had visible cankers after the frst growing season, clearly showing the risk of delivering non-symptomatic trees to customers when infected in year two of the nursery phase. Commercial trees of six cultivars were inoculated either in wounds (cut surfaces or cracks from bending), or on nonwounded trees at the time of planting and followed for two growing seasons. Inoculation in crack wounds from bending side branches resulted in a higher number of infected trees than cut surfaces, and both had a signifcantly higher incidence than non-wounded inoculated trees and their non-inoculated controls (97%, 67%, 14%, and 3 to 5%, respectively). All trees with canker after two growing seasons had symptoms after the frst growing season. After two growing seasons, 50% of the trees with an infected scion had canker lesions on the rootstock. These results show that cankers discovered during the year of planting could have been newly initiated infections if the trees had been wounded and exposed to inoculum at planting.
Forfattere
Anders Bryn Rune Halvorsen Peter Horvath Lasse Torben Keetz Ida Marielle Mienna Trond Simensen Olav Skarpaas Ingrid Vesterdal Tjessem Joachim Paul Töpper Vigdis Vandvik Liv Guri Velle Catharina Caspara VloonSammendrag
No abstract has been registered
Sammendrag
No abstract has been registered
Forfattere
Konstantin V. Krutovsky Anna A. Popova Igor A. Yakovlev Yulai A. Yanbaev Sergey M. MatveevSammendrag
No abstract has been registered
Forfattere
G. Brundu S. Follak J. Pergl D. Chapman E. Branquart S. Buholzer Inger Sundheim Fløistad G. Fried M. Herbst E. Marchante Valkenburg van Valkenburg R. TannerSammendrag
Bamboos are popular ornamental plants in the EPPO region though some of themhave been observed to escape the confines of planting and establish in the naturalenvironment. The aim of this study is to produce a risk-based list of bamboospecies which are recorded in the natural environment in the EPPO region, and todetermine if any of the species require a pest risk analysis. Forty-two bamboo specieswere identified as being present in the natural environment in the EPPO region. Ofthese, 11 species fulfil the three pre-selected criteria for species to be consideredpotentially harmful: (1) the species is naturalized in at least one EPPO country; (2)the species has a running dispersal behaviour (leptomorph); and (3) there is evidenceof invasive behaviour in at least one country. These 11 species were prioritized usingthe EPPO prioritization process for invasive alien plants. Owing to their high spreadpotential and potential high impact, three species, namely Phyllostachys aurea,Pseudosasa japonica and Sasa palmata, proceeded to the second stage of theprioritization process (risk management stage). All three species were identified ashaving a high priority for a pest risk analysis. In 2024, the EPPO Panel on InvasiveAlien Plants agreed with the results of the study but noted that further informationon impacts would be beneficial and therefore the Panel agreed that Ph. aurea andS. palmata should be added to the EPPO Alert List along with the already includedP. japonica. This will raise awareness of these species in the region and furtherinformation can be gathered to support the development of a risk assessment
Forfattere
H. Heinemann F. Durand-Maniclas F. Seidel F. Ciulla Teresa Gómez de la Bárcena M. Camenzind S. Corrado Z. Csűrös Zs. Czakó D. Eylenbosch Andrea Ficke C. Flamm J.M. Herrera V. Horáková A. Hund F. Lüddeke F. Platz B. Poós Daniel Rasse Silva-Lopes da Silva-Lopes M. Toleikiene A. Veršulienė M. Visse-Mansiaux K. Yu J. Hirte A. DonSammendrag
No abstract has been registered