Article
Agronomy
L. Matkala, L. Kulmala, P. Kolari, M. Aurela, J. Back
Summary: The study found that two subarctic forest stands, one with Scots pine and the other with Norway spruce, experienced different extreme weather events, with the spruce forest being less resilient. Overall, both forests, especially the trees, showed resilience to weather extremes and experienced no long-term damage.
AGRICULTURAL AND FOREST METEOROLOGY
(2021)
Article
Forestry
Lisa Petersson, Staffan Nilsson, Emma Holmstrom, Matts Lindbladh, Adam Felton
Summary: This study compared the species richness, cover, and community composition of bryophytes and lichens in Scots pine and Norway spruce dominated forests. The results showed higher cover and species richness of lichens in Scots pine stands, while bryophyte species richness was higher in Norway spruce stands. Canopy cover and light transmission to the forest floor were identified as important drivers for the differences in forest floor communities between the two tree species.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Forestry
Veiko Uri, Mai Kukumagi, Jurgen Aosaar, Mats Varik, Hardo Becker, Kristiina Aun, Maris Nikopensius, Marek Uri, Mikko Buht, Agnes Sepaste, Allar Padari, Endla Asi, Allan Sims, Kalle Karoles
Summary: Canopy litterfall is an important aboveground flux in forest ecosystems, but its dynamics in hemiboreal forests are poorly studied. This study estimated the average annual litter fluxes in different tree stands and developed litter models for estimating the annual litter flux. The results showed that the annual litter flux depended on site quality index and stand age, but not on stand basal area. The average annual canopy litterfall was similar for different tree species, with the proportion of needles or leaves declining with stand age.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Article
Environmental Sciences
Laura Pikkarainen, Katri Nissinen, Rajendra Prasad Ghimire, Minna Kivimaenpaa, Veli-Pekka Ikonen, Antti Kilpelainen, Virpi Virjamo, Hao Yu, Sara Kirsikka-Aho, Timo Salminen, Jukka Hirvonen, Timo Vahimaa, Jaana Luoranen, Heli Peltola
Summary: We investigated the responses of growth and emissions of biogenic volatile organic compounds (BVOCs) in Scots pine, Norway spruce, and silver birch seedlings to simulated climate warming. Our findings showed that silver birch benefited the most from warming, while Norway spruce benefited the least. Height and diameter growth of pine and spruce seedlings increased with increasing temperature, especially in pine. Overall, the biomass and diameter growth of conifer seedlings increased with warming.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Plant Sciences
Mireia Gomez-Gallego, Lucia Galiano, Jordi Martinez-Vilalta, Jan Stenlid, Hernan D. Capador-Barreto, Malin Elfstrand, J. Julio Camarero, Jonas Oliva
Summary: This study investigated the physiological processes leading to drought-induced mortality in Norway spruce and Scots pine saplings infected with Heterobasidion annosum. The results showed that pathogen infection decreased carbon reserves in spruce, reducing their ability to cope with drought and resulting in increased mortality rates. The study also found that defoliation, relative water content, and starch concentration were predictors of mortality under both drought and pathogen infection.
PLANT CELL AND ENVIRONMENT
(2022)
Article
Plant Sciences
Pavel P. Pashkovskiy, Radomira Vankova, Ilya E. Zlobin, Petre Dobrev, Alexander V. Kartashov, Alexandra I. Ivanova, Valery P. Ivanov, Sergey I. Marchenko, Dmitry I. Nartov, Yury V. Ivanov, Vladimir V. Kuznetsov
Summary: Water stress has different effects on spruce and pine trees, with long-term water deficit impacting spruce more and short-term deficit impacting pine more. Both species showed increased levels of ABA under long-term water deficit. The content of jasmonates and salicylic acid decreased during the short-term water deficit period and was correlated with a decrease in phenolic compounds in pine trees.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2022)
Article
Forestry
Marko Kovacevic, Cornelia Rieder-Gradinger, Alfred Teischinger, Ewald Srebotnik
Summary: VOCs emissions from Scots pine and Norway spruce wood were evaluated using Micro-Chamber air-sampling, thermal desorption, and GC-MS. The results showed that there were no significant differences in emissions between spruce heartwood and sapwood. The emission rates from spruce were significantly lower than pine in both green and kiln-dried conditions. Kiln drying had a substantial impact on VOC emissions, with a median emission reduction of more than 70% for all tested groups except for pine sapwood. The emission profiles were similar among the tested groups, except for one particular compound.
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS
(2023)
Article
Forestry
Reimo Lutter, Nils Henriksson, Hyungwoo Lim, Robert Blasko, Ruth-Kristina Magh, Torgny Nasholm, Annika Nordin, Tomas Lundmark, John D. Marshall
Summary: Mixed forests may not necessarily enhance resource acquisition, but lead to compensatory partitioning of growth, suggesting fierce interspecific competition.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Plant Sciences
Jorge Aldea, Ricardo Ruiz-Peinado, Miren del Rio, Hans Pretzsch, Michael Heym, Gediminas Brazaitis, Aris Jansons, Marek Metslaid, Ignacio Barbeito, Kamil Bielak, Gro Hylen, Stig-Olof Holm, Arne Nothdurft, Roman Sitko, Magnus Lof
Summary: Climate change is causing more severe and frequent droughts, leading to tree mortality and reduction in ecosystem services. Mixed stands are more resilient to drought compared to pure stands, and there is limited knowledge on the drought susceptibility of Norway spruce and Scots pine when coexisting. Norway spruce is more vulnerable to summer drought with lower resistance and longer recovery time than Scots pine. Mixed stands provide higher drought resistance for both species, but the advantage decreases with longer drought duration. Climate-sensitive and old trees in marginal sites are more affected by drought stress. Promoting Scots pine and mixed forests is a promising strategy for adapting to climate change.
JOURNAL OF ECOLOGY
(2022)
Article
Plant Sciences
Yury Ivanov, Ilya E. Zlobin, Alexander Kartashov, Alexandra I. Ivanova, Valery P. Ivanov, Sergey Marchenko, Dmitry Nartov, Vladimir V. Kuznetsov
Summary: The deterioration of plant mineral nutrition during drought negatively affects plant performance. This study examined the effects of seasonal and multiyear water shortages on nutrient supply and demand in Scots pine and Norway spruce. The results showed that water shortage increased the wood concentrations of all elements except for Mn. Similar patterns of changes were found in needles between species, with Mg increasing and Fe and Mn decreasing under water shortage. Photosynthetic pigments and lipid peroxidation products were not correlated with element dynamics in needles.
Article
Forestry
Alex Appiah Mensah, Emma Holmstrom, Hans Petersson, Kenneth Nystrom, Euan G. Mason, Urban Nilsson
Summary: The study found a significant upward trend in height growth for Scots pine and Norway spruce in Sweden, with the trend more pronounced after the millennium shift. Temperature-sum was positively correlated with top height growth, while precipitation-sum did not have a significant effect on height growth for either species.
FOREST ECOLOGY AND MANAGEMENT
(2021)
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
Forestry
Teresa Hazubska-Przybyl, Mikolaj Krzysztof Wawrzyniak, Joanna Kijowska-Oberc, Aleksandra Maria Staszak, Ewelina Ratajczak
Summary: Somatic embryogenesis is an important method for tree propagation, which can be integrated with other biotechnological techniques to achieve commercial-scale sapling production of high-yielding genotypes. In the research of Norway spruce and Scots pine, somatic embryogenesis can be used to improve plant stock to adapt to the challenges of climate change and biodiversity crisis.
Article
Remote Sensing
T. P. Pitkanen, S. Bianchi, A. Kangas
Summary: This study investigates the effects of inter-tree competition on crown morphology in Scots pine and Norway spruce. The results show that while competition is a major factor in determining crown shape, the characteristics and applicable indices are contrasting between the two species.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2022)
Article
Chemistry, Multidisciplinary
Omolara O. Mofikoya, Eemeli Eronen, Marko Makinen, Janne Janis
Summary: Coniferous trees in Finland have great economic value for pulp, paper, and timber making. The residues from their utilization, especially bark and needles, are rich in bioactive compounds that can be used in pharmaceutical or techno-chemical applications. Hydrothermal extraction was performed on needles from four conifer tree species, and the resulting extracts were analyzed using mass spectrometry. Ethanol as a solvent significantly enhanced the recovery of lipids and other compounds.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
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)