Article
Environmental Sciences
Benjamin Allen, Michele Dalponte, Hans Ole Orka, Erik Naesset, Stefano Puliti, Rasmus Astrup, Terje Gobakken
Summary: This study used hyperspectral imagery collected from unmanned aerial vehicles to detect wood decay in Norway spruce. The results showed that UAV-based sensors offer flexibility and potential cost advantages. The classification accuracy was higher when using the 490-band hyperspectral imagery compared to the 29-band imagery.
Article
Forestry
Ana Aza, Annika Kangas, A. Maarit Kallio
Summary: In Norway, converting rot-infested spruce stands to pine may be more economically beneficial. Pixel-level information on rot levels and site indexes is crucial for identifying optimal planting strategies and increasing the economic return of the stand. Using the Value of Information concept, the highest value of information is found for stands with medium-low dominant site indexes.
Article
Remote Sensing
Janne Raty, Johannes Breidenbach, Marius Hauglin, Rasmus Astrup
Summary: This study predicted timber volume damaged by butt rot at the stand-level in Norway using harvester information, remotely sensed, and environmental data. Forest attributes characterizing the maturity of the forest were found to be important predictor variables for butt rot damages, with remotely sensed variables being more crucial than the environmental ones. The results show that knowledge about the butt rot status of spatially close stands is important for obtaining satisfactory error rates in mapping the damages.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2021)
Article
Remote Sensing
Michele Dalponte, Yady Tatiana Solano-Correa, Hans Ole Orka, Terje Gobakken, Erik Naesset
Summary: This study explored the possibility of using multi-temporal and multispectral satellite data to detect rot presence in Norway spruce trees. The results showed an underestimation of the rot presence, but the method can be used to provide a tentative map of the rot presence.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2022)
Article
Forestry
Benjamin Allen, Michele Dalponte, Ari M. Hietala, Hans Ole Orka, Erik Naesset, Terje Gobakken
Summary: This study aimed to use remote sensing to detect rot in spruce forests in Norway. The results indicate that an airborne hyperspectral imager can accurately classify the presence or absence of rot in a single-tree-based framework.
Article
Multidisciplinary Sciences
Kevin Nota, Jonatan Klaminder, Pascal Milesi, Richard Bindler, Alessandro Nobile, Tamara van Steijn, Stefan Bertilsson, Brita Svensson, Shun K. Hirota, Ayumi Matsuo, Urban Gunnarsson, Heikki Seppa, Minna M. Valiranta, Barbara Wohlfarth, Yoshihisa Suyama, Laura Parducci
Summary: Based on evidence from ancient sedimentary DNA and modern population genomics, the authors provide support for the recolonization of Fennoscandia by Norway spruce shortly after the last glaciation, with migration from the east during the early Holocene.
NATURE COMMUNICATIONS
(2022)
Article
Plant Sciences
Alexander Vergara, Julia C. Haas, Tuuli Aro, Paulina Stachula, Nathaniel R. Street, Vaughan Hurry
Summary: The conifer-dominated boreal forest is expected to experience warmer winter air temperatures and reduced snow cover depth and duration due to climate change. Norway spruce exhibits unique mechanisms for cold tolerance, utilizing early response transcription factors and showing delayed response compared to Arabidopsis. Regulatory network analysis identified both conserved transcription factors and species-specific responses in Norway spruce cold stress adaptation.
PLANT CELL AND ENVIRONMENT
(2022)
Article
Plant Sciences
Sonali Sachin Ranade, Maria Rosario Garcia-Gil
Summary: Transcriptomic and exome capture analysis in Norway spruce showed an adaptive cline for shade tolerance. Genes involved in the lignin pathway and immunity may contribute to local adaptation to light quality.
Article
Forestry
Jaanika Edesi, Mikko Tikkinen, Malin Elfstrand, Ake Olson, Saila Varis, Ulrika Egertsdotter, Tuija Aronen
Summary: The Norway spruce somatic embryogenesis technique is suitable for propagating materials with root rot resistance traits. The presence of the root rot resistance locus PaLAR3B does not interfere with somatic embryo production capacity. However, in some families, the PaLAR3B genotype may affect the viability of emblings.
Article
Forestry
Calvin Ritter, David I. King, Stephen DeStefano, Daniel Clark
Summary: Establishment of non-native monoculture plantations is a common method to supplement native timber stocks, but it is believed to provide inferior habitat for native biodiversity. However, our study in Massachusetts showed that mature Norway spruce plantations have similar species richness as native forest habitats and support the abundance of several native conifer-dependent bird species. This suggests that small-scale plantations can coexist without negative impacts on native biodiversity.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Environmental Sciences
P. E. Karlsson, C. Akselsson, S. Hellsten, G. Pihl Karlsson
Summary: This study estimated the yearly, total (dry+wet) deposition of inorganic nitrogen to Norway spruce forests in Sweden for a twenty-year period using a novel method. The results showed that spruce forests in south Sweden receive more nitrogen deposition than previously estimated, and there is a clear time trend of decreased deposition of inorganic nitrogen in all parts of Sweden. The findings emphasize the importance of estimating total deposition in order to map levels and follow the development of nitrogen deposition in forests.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agricultural Engineering
Petri Kilpelainen, Eero Liski, Pekka Saranpaa
Summary: Tannins were extracted from Norway spruce and Scots pine bark using water at different temperatures. The highest yield was obtained with hot water extraction of spruce bark at 140 degrees C. Addition of sodium carbonate improved yield at temperatures of 60-90 degrees C. Pine bark had similar extraction yields but lower proportion of tannins compared to spruce. Machine-learning models were used to predict extracted tannin yields.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Forestry
Mostarin Ara, Mattias Berglund, Nils Fahlvik, Ulf Johansson, Urban Nilsson
Summary: This study aimed to investigate the effect of pre-commercial thinning (PCT) and timing of PCT on the production and profitability of Norway spruce stands. The results showed that PCT has a positive effect on the long-term profitability of Norway spruce plantations, but the timing of PCT has little effect on profitability. Additionally, retaining a certain number of Norway spruce and birch trees can lead to profitable mixed forests with little or no economic loss compared to pure Norway spruce stands.
Article
Plant Sciences
Pushan Bag, Jenna Lihavainen, Nicolas Delhomme, Thomas Riquelme, Kathryn M. Robinson, Stefan Jansson
Summary: Boreal conifers like Norway spruce have the ability to survive harsh winter conditions and remain evergreen, with changes in the global transcriptome of the needles reflecting acclimation processes throughout the year.
Article
Forestry
Martina Hajickova, Roman Plichta, Josef Urban, Daniel Volarik, Roman Gebauer
Summary: Norway spruce seedlings have shown good resilience to spring drought, with physiological parameters starting to recover after rewatering. However, the time required for full recovery from stress may make seedlings more susceptible to recurrent drought events. Growth and physiological functions gradually returned to normal after experiencing drought and undergoing rehydration.
Article
Forestry
Simon Berg, Mika Yoshida, Rin Sakurai, Hideo Sakai
JOURNAL OF FOREST RESEARCH
(2018)
Article
Forestry
Simon Berg, Dan Bergstrom, Dimitris Athanassiadis, Tomas Nordfjell
SCANDINAVIAN JOURNAL OF FOREST RESEARCH
(2012)
Article
Forestry
Simon Berg, Juha Nurmi, Robert Prinz
SCANDINAVIAN JOURNAL OF FOREST RESEARCH
(2019)
Article
Forestry
Simon Berg, Dimitris Athanassiadis
INTERNATIONAL JOURNAL OF FOREST ENGINEERING
(2020)
Article
Forestry
Jussi Manner, Simon Bergand, Back Tomas Ersson
INTERNATIONAL JOURNAL OF FOREST ENGINEERING
(2020)
Article
Forestry
Simon Berg, Dimitris Athanassiadis
SCANDINAVIAN JOURNAL OF FOREST RESEARCH
(2020)
Article
Forestry
Simon Berg, Dan Bergstrom
Summary: Swedish legislation sets requirements for the precision of estimates used to determine the value of forest fuels, with energy content estimation based on moisture content and biomass weight. The study found that the current sampling regime is sufficient for larger deliveries, but adjustments are needed for medium and small deliveries. Research into fast online sampling and analysis methods may offer solutions for small deliveries.
INTERNATIONAL JOURNAL OF FOREST ENGINEERING
(2021)
Article
Forestry
Jussi Manner, Simon Berg, Martin Englund, Back Tomas Ersson, Anders Mork
JOURNAL OF FOREST SCIENCE
(2020)
Article
Forestry
Simon Berg, Mika Yoshida, Rin Sakurai, Hideo Sakai
INTERNATIONAL JOURNAL OF FOREST ENGINEERING
(2017)
Article
Forestry
Simon Berg, Dan Bergstrom, Tomas Nordfjell
Article
Forestry
A. Q. Nyrud, K. M. A. Heltorp, Anders Roos, Francisco X. Aguilar, Katja Lahtinen, Noora Viholainen, Sami Berghall, Anne Toppinen, B. J. Thorsen, Matleena Kniivila, Antti Haapala, Elias Hurmekoski, T. Hujala, H. F. Hoen
Summary: This study investigated public attitudes towards multi-storey wood buildings in seven European countries and found that the level of knowledge about wood buildings was lower in countries where brick, stone, and concrete were commonly used in construction, such as the United Kingdom, Germany, and Denmark. Finland and Sweden had the most positive attitudes towards wood buildings. The study also identified factors such as fire vulnerability, material solidity, indoor environment, and moisture vulnerability that influenced people's perception of wood buildings as a nice place to live.
SCANDINAVIAN JOURNAL OF FOREST RESEARCH
(2024)