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Silva Fennica 1926-1997
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Articles containing the keyword 'business'

Category : Article

article id 5570, category Article
Anne Toppinen, Riitta Hänninen, Susanna Laaksonen. (1996). A dynamic forecasting model for the Finnish pulp export price. Silva Fennica vol. 30 no. 4 article id 5570. https://doi.org/10.14214/sf.a8505
Keywords: inventory; Finland; cointegration; business cycles; pulp; price; sulphate pulp; export prices
Abstract | View details | Full text in PDF | Author Info

This study investigates the relationship between Finnish sulphate pulp export prices and international pulp inventories using the Johansen cointegration method. Long-run equilibrium is found to exist between pulp price and NORSCAN inventory for the study period, 1980-94. Granger causality is found to exist from inventory to price but not vice versa. A simple short-run forecasting model for the Finnish pulp export price is formed. In preliminary analysis, the explanatory power of model is found to be acceptable but only under stable market conditions.

  • Toppinen, E-mail: at@mm.unknown (email)
  • Hänninen, E-mail: rh@mm.unknown
  • Laaksonen, E-mail: sl@mm.unknown
article id 4630, category Article
M. Lappi-Seppälä. (1953). Suhdannevaihteluista, erityisesti metsätalouden kannalta. Silva Fennica no. 80 article id 4630. https://doi.org/10.14214/sf.a14045
English title: Effects of business cycles on forestry.
Original keywords: metsätalous; metsäteollisuus; metsäopetus; jatkokoulutus; suhdannevaihtelut
English keywords: forestry; forest industry; forest education; business cycles
Abstract | View details | Full text in PDF | Author Info

Silva Fennica Issue 80 includes presentations held in 1952 in the 7th professional development courses, arranged for foresters working in the Forest Service. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.

This presentation introduces the principles of business cycles and describes how they have affected forestry in Finland.

  • Lappi-Seppälä, E-mail: ml@mm.unknown (email)
article id 4493, category Article
Aimo Mela. (1937). Matkustussäännöstä ja matkalaskuista. Silva Fennica no. 39 article id 4493. https://doi.org/10.14214/sf.a13903
English title: Travelling guidelines and travel invoices in forest administration.
Original keywords: metsäopetus; metsänhoitajien jatkokurssit; metsähallinto; työmatka; matkat
English keywords: forest administration; forest education; professional development courses; business travel; travelling
Abstract | View details | Full text in PDF | Author Info

Silva Fennica Issue 39 includes presentations held in professional development courses in 1935 that were arranged for foresters working in public administration. The presentations focus on practical issues in forest management and administration, especially in regional level.

This presentation describes travelling guidlines in forest administration.

  • Mela, E-mail: am@mm.unknown (email)

Category : Article

article id 7484, category Article
Seppo Ervasti. (1959). Suomen havusahatavaranmyynnin kausi- ja suhdannevaihteluista vuosina 1951-1958. Acta Forestalia Fennica vol. 68 no. 2 article id 7484. https://doi.org/10.14214/aff.7484
English title: On the seasonal and business cycle fluctuations of Finnish sawn softwood sales in 1951-1958.
Original keywords: vienti; sahatavara; suhdannevaihtelut; havusahatavara
English keywords: sawn timber; export; business cycles; sawn goods; sawn softwood; sawn sofwood sales
Abstract | View details | Full text in PDF | Author Info

The investigation examines export sales of Finnish sawn softwood sales in 1951-1958, concentrating on the volume of the sales. The material was collected from the archives of Finnish Sawmill Owner’s Association and the Finnish Sawmill Control Organization and the annual reports of the former. Correlation analysis was used in assessing the interdependence of the monthly sales volume and the price, and opening sales and the total sales volume of the year.

A slightly negative correlation was seen between the sale price and the monthly sales volume. Goods sold at under average prices are more abundant than goods sold at over average prices. Generally, with a rising price trend, the annual sales volume increased, but with falling prices the situation was reverse. The sales volume has been dependent on the business cycle development of prices. There was positive correlation between the opening sales and the total sales quantity for the year. The sales volume was at its maximum in the period between November and January, and at the minimum between March and September.

The time of the sales made to different countries differed little judged by quarterly statistics. It seems that the major shippers have generally concluded opening sales first. Northern Finnish shippers and the small shippers of Southern Finland have sold proportionately least during the last quarter. In general, the poorer the qualities in question the smaller on an average the proportion of opening sales but the greater the share of clearance sales.

The PDF includes a summary in English.

  • Ervasti, E-mail: se@mm.unknown (email)

Category : Research article

article id 24033, category Research article
Atte Koskivaara, Katja Lähtinen, Anne Toppinen. (2025). Longitudinal analysis of financial performance of sawmills and wood construction element producers in Finland. Silva Fennica vol. 59 no. 2 article id 24033. https://doi.org/10.14214/sf.24033
Keywords: wood construction; competitiveness; profitability; business; financial analysis; innovation; value-added
Highlights: Wood element producers show more variation in profitability measures during 2012–2021 than sawmills; Element producers’ financial stability shows a decreasing trend in comparison to slight growth in the case of sawmills; Value-added has a positive effect on both sectors competitiveness whereas cost items have negative effects; Investments have a positive effect on element producers’ solvency and negative on sawmills.
Abstract | Full text in HTML | Full text in PDF | Author Info
The global outlook for wood construction is positive, driven by bio- and circular economy programs promoting wood use in construction. The industrialization of building processes is also seen as essential for improving construction efficiency and competitiveness. However, despite this positive outlook, wood construction in Finland remains a niche that has yet to reach its full potential. To reduce the dependency between the concrete and construction sectors, the wood element value chain needs competitive businesses to foster innovations and capture a larger market share in this highly competitive industry. However, the performance of two important stages of the value chain, sawmilling and wood element manufacturing, has not been measured in the scientific literature. The competitiveness of Finnish sawmills and wood element producers were analyzed by studying the industry’s financial performance using firm-level panel data and a regression approach over the 2012–2021 period. The results suggest higher variation across element producers’ profitability, while sawmills are more homogenous. Both value chain stages show signs of typical manufacturing industries, as materials and salaries proved to have a relatively high negative impact on competitiveness. However, differences were also found especially regarding short-term solvency and liquidity trends and average levels of costs and value-added. To understand competitiveness in the wood construction sector, an insight into intra- and inter-industry dynamics and value chain positioning is therefore required. Financially viable sawmilling and wood element firms are essential not only for business survival but for transforming the construction industry’s logic.
  • Koskivaara, Natural Resources Institute Finland (Luke), Bioeconomy and environment, Latokartanonkaari 9, 00790 Helsinki, Finland ORCID https://orcid.org/0000-0001-7454-0470 E-mail: atte.koskivaara@luke.fi (email)
  • Lähtinen, Natural Resources Institute Finland (Luke), Bioeconomy and environment, Latokartanonkaari 9, 00790 Helsinki, Finland ORCID https://orcid.org/0000-0001-6260-5062 E-mail: katja.lahtinen@luke.fi
  • Toppinen, University of Helsinki, Faculty of Agriculture and Forestry, Latokartanonkaari 7, 00014 Helsingin yliopisto, Finland ORCID https://orcid.org/0000-0003-0910-1505 E-mail: anne.toppinen@helsinki.fi
article id 23068, category Research article
Anne Viljanen, Mikko Kurttila, Anne Toppinen. (2024). Retrofitting urban areas with wood: the origin of new projects in an emerging business ecosystem. Silva Fennica vol. 58 no. 4 article id 23068. https://doi.org/10.14214/sf.23068
Keywords: decision-making; business ecosystem; dynamic capabilities; project initiation; vertical building; wooden retrofits
Highlights: Decarbonizing building stock requires businesses to create new solutions for markets; Wood-material based retrofits offer new possibilities but are yet rare in urban context; The city-owned housing companies are found to be most aware of seizing opportunities of climate-benefits and facelifts in the less appealing suburban areas; Actors use dynamic capabilities in niche-level projects, yet the reconfiguring stage of business models is not visible.
Abstract | Full text in HTML | Full text in PDF | Author Info

Nurturing a low-carbon residential building stock requires businesses to create new solutions for markets. Wood material-based retrofits would be one solution but have remained rare in the urban context. Our study explores the structure and dynamics of an emerging business ecosystem (BE) of wooden retrofits in Finland. We study wooden retrofit projects, from the perspective of the initial steps of local-level development. By applying the concepts of BE and dynamic capabilities, we aim to shed light on the role of actors and their early-stage decision-making and use actor mapping and qualitative analysis of 27 thematic interviews with retrofit businesses and municipal actors. Results show that project initiation has relied on individual champions seizing opportunities as a main base in building dynamic capabilities. Builders and customers are key actors of wooden retrofit projects in local BEs in Finland. The identified actors are further involved with future plans for wooden retrofits, some with ambitious deep renovation with wood. Motivations for projects are driven from urban densification strategies, improvement of suburban neighborhood attractiveness and from the efficiency of space utilization. Results further elaborate a certain degree of difficulty in the early-stage decision-making. This study contributes to the scientific knowledge of both the BE and the dynamic capability perspective by exploring a path to material-driven sustainable construction in the Finnish context. We provide new information on this emerging retrofit construction business with potentially significant international implications if scaled up more widely.

  • Viljanen, University of Helsinki, Faculty of Agriculture and Forestry, Latokartanonkaari 7, 00014 Helsingin yliopisto, Finland ORCID https://orcid.org/0000-0001-7166-8022 E-mail: anne.viljanen@helsinki.fi (email)
  • Kurttila, Natural Resources Institute Finland (Luke), Research and Customer Relationships, Yliopistokatu 6, FI-80100 Joensuu, Finland ORCID https://orcid.org/0000-0001-5290-4771 E-mail: mikko.kurttila@luke.fi
  • Toppinen, University of Helsinki, Faculty of Agriculture and Forestry, Latokartanonkaari 7, 00014 Helsingin yliopisto, Finland ORCID https://orcid.org/0000-0003-0910-1505 E-mail: anne.toppinen@helsinki.fi
article id 23024, category Research article
Anu Laakkonen, Katri Rusanen, Teppo Hujala, Mika Gabrielsson, Jouni Pykäläinen. (2023). Implications of the sustainability transition on the industry value creation logic – case of Finnish pulp and paper industry. Silva Fennica vol. 57 no. 3 article id 23024. https://doi.org/10.14214/sf.23024
Keywords: forest industry; business transformation; circular bioeconomy; sustainable business
Highlights: Global change drivers are inducing a sustainability transition to a circular bioeconomy; Established industries need to reconfigure their value creation logic; A document analysis investigated pulp and paper industry’s communicated value creation logic; An interdisciplinary approach helps to understand a changing business environment; Recognition of a socio-economic-technological-environmental system is needed.
Abstract | Full text in HTML | Full text in PDF | Author Info

Global economic, social and environmental change drivers have tremendous effects on the dynamic and nested business environment calling for a sustainability transition to a circular bioeconomy. The transition will pressurise established industries to alter their value creation logic to consider sustainability holistically. The study follows a case study research strategy and investigates how an established Finnish pulp and paper industry reconfigures its communicated value creation logic. The findings of a qualitative document analysis suggest that the pulp and paper industry has started to explore new sustainable path-breaking innovations and create a common development agenda, which has resulted in incremental adaptations in the value creation logic. However, the industry’s narrative of already being sustainable has hampered the reconfiguration and stabilisation of the adapted value creation logic. From a theoretical perspective, adopting an interdisciplinary and systemic perspective is necessary to understand the changing business environment. From a managerial perspective, cross-sectoral collaboration and including perspectives of different actors can help in creating a holistically sustainable value creation logic.

  • Laakkonen, School of Forest Sciences, Faculty of Science, Forestry and Technology, University of Eastern Finland, P.O. Box 111, FI-80101 Joensuu, Finland; Department of Forest Sciences, Faculty of Agriculture and Forestry, University of Helsinki, P.O. Box 27, 00014 University of Helsinki, Finland ORCID https://orcid.org/0000-0002-6384-7773 E-mail: anu.laakkonen@uef.fi (email)
  • Rusanen, School of Forest Sciences, Faculty of Science, Forestry and Technology, University of Eastern Finland, P.O. Box 111, FI-80101 Joensuu, Finland ORCID https://orcid.org/0000-0003-1705-5561 E-mail: katri.rusanen@uef.fi
  • Hujala, School of Forest Sciences, Faculty of Science, Forestry and Technology, University of Eastern Finland, P.O. Box 111, FI-80101 Joensuu, Finland ORCID https://orcid.org/0000-0002-7905-7602 E-mail: teppo.hujala@uef.fi
  • Gabrielsson, Department of Marketing, Hanken School of Economics, P.O. Box 479, FI-00101, Helsinki, Finland; UEF Business School, Faculty of Social Sciences and Business Studies, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland ORCID https://orcid.org/0000-0002-0633-6918 E-mail: mika.gabrielsson@uef.fi
  • Pykäläinen, School of Forest Sciences, Faculty of Science, Forestry and Technology, University of Eastern Finland, P.O. Box 111, FI-80101 Joensuu, Finland E-mail: jouni.pykalainen@uef.fi
article id 10392, category Research article
Paula Jylhä, Pasi Rikkonen, Katri Hamunen. (2020). Size matters – an analysis of business models and the financial performance of Finnish wood-harvesting companies. Silva Fennica vol. 54 no. 4 article id 10392. https://doi.org/10.14214/sf.10392
Keywords: profitability; business model; business model canvas; entrepreneur; success factor; wood-harvesting enterprise
Highlights: Economic success was related to company’s size, Small companies with a turnover of less than 600 000 € a–1 are struggling with profitability; Large enterprises continue to grow and innovate new business concepts; The competitive edge of large companies was reflected in large production capacity, efficient operations, versatile supply of services, and power in negotiations.
Abstract | Full text in HTML | Full text in PDF | Author Info

The size of Finnish wood harvesting enterprises has grown, and entrepreneurs have become responsible for various additional tasks, resulting in networking with other harvesting enterprises of various sizes and suppliers of supporting services, but the profitability of the wood harvesting sector has remained low. In the present study, the financial performance of 83 wood harvesting companies in Eastern and Northern Finland was evaluated, based on public final account data from a five-year period between 2013 and 2017. The factors underlying economic success were identified based on 19 semi-structured entrepreneur interviews. The Business Model Canvas framework was applied in the analyses. In particular, the smallest companies (with an annual turnover of less than 600 000 €) struggled with profitability. They showed increasing indebtedness, suffered from poor power in negotiations, had typically short-term contracts, and faced difficulties in retaining skilled operators. Most of the small companies were subcontractors of larger wood-harvesting companies. The better economic success of larger companies was likely based on their capacity to provide wood harvesting services in large volumes and supply versatile services, power in negotiations, and more cost-effective operations. The future development of wood harvesting seems to be polarised: larger enterprises are likely to continue growing, while the size of smaller enterprises has stabilised. Enhancing business management skills and practices is required in enterprises of all size groups.

  • Jylhä, Natural Resources Institute Finland (Luke), Production systems, Teknologiakatu 7, FI-67100 Kokkola, Finland E-mail: paula.jylha@luke.fi (email)
  • Rikkonen, Natural Resources Institute Finland (Luke), Bioeconomy and environment, Lönnrotinkatu 7, FI-50100 Mikkeli, Finland E-mail: pasi.rikkonen@luke.fi
  • Hamunen, Natural Resources Institute Finland (Luke), Bioeconomy and environment, Yliopistokatu 6B, FI-80100 Joensuu, Finland E-mail: katri.hamunen@luke.fi
article id 10051, category Research article
Anna-Kaisa Kosenius, Artti Juutinen, Liisa Tyrväinen. (2020). The role of state-owned commercial forests and firm features in nature-based tourism business performance. Silva Fennica vol. 54 no. 1 article id 10051. https://doi.org/10.14214/sf.10051
Keywords: business performance; entrepreneurial attitude; forest-based tourism business; forest management practices; landscape trading; recreational value trading
Highlights: State-owned commercial forests provide an important part of nature-based tourism enterprises’ service scope; Increase in turnover during five years vary depending on provided services; Entrepreneurial attitude associates with willingness to participate in a landscape and recreational value trading scheme; Increasing international demand for nature-based tourism promotes business possibilities, needs attention to forest environments and smooth co-operation between actors.
Abstract | Full text in HTML | Full text in PDF | Author Info

Nature-based tourism (NBT) is a growing industry within regions rich in natural amenities worldwide. An important feature of NBT business is the dependence on the quality of surrounding environment. This paper addresses the role of the management of commercial forests owned by the state in Finnish Lapland. The paper explores the NBT entrepreneurs’ willingness to participate in a proposed new landscape and recreational value trading (LRVT) and elaborates the effect of entrepreneur and enterprise characteristics, such as entrepreneurial attitude, venture size, and a variety of services offered to customers, on the experienced and expected growth of NBT enterprise. The survey data on NBT enterprises were analyzed with ordered and binary logit models. The willingness of enterprises to participate in LRVT depended on the venture size, entrepreneurial attitude, and type of activities offered to customers. The results show that relatively young and small-sized enterprises have faced difficulties in developing their business. Entrepreneurial experience, risk-taking and intention to develop new business associate positively with expected increase in turnover.

  • Kosenius, University of Helsinki, Department of Economics and Management, P.O. Box 27, FI-00014 University of Helsinki, Finland ORCID https://orcid.org/0000-0002-1528-8145 E-mail: anna-kaisa.kosenius@helsinki.fi (email)
  • Juutinen, Natural Resources Institute Finland (Luke), Bioeconomy and environment, Paavo Havaksentie 3, FI-90570 Oulu, Finland ORCID https://orcid.org/0000-0003-4300-5365 E-mail: artti.juutinen@luke.fi
  • Tyrväinen, Natural Resources Institute Finland (Luke), Bioeconomy and environment, Latokartanonkaari 9, FI-00790 Helsinki, Finland ORCID https://orcid.org/0000-0001-9941-8228 E-mail: liisa.tyrvainen@luke.fi
article id 10151, category Research article
Jyri Hietala, Riitta Hänninen, Matleena Kniivilä, Anne Toppinen. (2019). Networks in international opportunity recognition among Finnish wood product industry SMEs. Silva Fennica vol. 53 no. 4 article id 10151. https://doi.org/10.14214/sf.10151
Keywords: wood products; business networks; institutional networks; internationalization; opportunity recognition; social networks
Highlights: In line with earlier literature, we found the networks in our study to positively impact international opportunity recognition; Despite the reliance on various network forms and levels, a strategic stance towards opportunity recognition can be characterized as being more reactive than proactive; Institutional networks represented a more systematic way of recognizing international opportunities among case companies.
Abstract | Full text in HTML | Full text in PDF | Author Info

Bioeconomy development will create new opportunities for firms operating in the international wood products markets, and identifying and exploiting these opportunities is emphasized as a key concept to achieving business success. Our study will attempt to address a gap in the literature on sawmill industry business development from the viewpoint of international opportunity recognition. The aim of our study is to provide a holistic description on how small and medium-sized enterprises (SMEs) in the wood products industry recognize and exploit international business opportunities, and how they utilize network perspectives in this context. The subject was examined through Finnish wood product industry SMEs by interviewing 11 managers and industry representatives. The results suggest that SMEs recognize international opportunities reactively per se. Social networks formed in professional forums were an important information channel for identifying international opportunities. Through vertical business networks, such as sales agents, firms have been able to increase their international market presence and free their own resources for other important activities. Horizontal dyadic business networks were seen to facilitate new international opportunities through cooperation, while excessive reliance on vertical networks raised concerns and seemed not to be effective in international opportunity recognition. Institutional networks formed a systematic way of recognizing international opportunities, but more so at the initial market entry stage.

  • Hietala, United Bankers, Aleksanterinkatu 21 A, FI-00100 Helsinki, Finland E-mail: jyri.hietala@unitedbankers.fi (email)
  • Hänninen, Natural Resources Institute Finland (Luke), Bioeconomy and environment, Latokartanonkaari 9, FI-00790 Helsinki, Finland E-mail: riitta.hanninen@luke.fi
  • Kniivilä, Natural Resources Institute Finland (Luke), Bioeconomy and environment, Latokartanonkaari 9, FI-00790 Helsinki, Finland E-mail: matleena.kniivila@luke.fi
  • Toppinen, University of Helsinki, Helsinki Institute of Sustainability Science, Latokartanonkaari 7, P.O. 27, FI-00014 University of Helsinki, Finland E-mail: anne.toppinen@helsinki.fi
article id 102, category Research article
Anne Toppinen, Katja Lähtinen, Leena A. Leskinen, Niklas Österman. (2011). Network co-operation as a source of competitiveness in medium-sized Finnish sawmills. Silva Fennica vol. 45 no. 4 article id 102. https://doi.org/10.14214/sf.102
Keywords: collaboration; social capital; strategic resources; competitive advantage; business processes
Abstract | View details | Full text in PDF | Author Info
In the Finnish sawmill industry, inter-firm collaboration has often been brought up as a means of creating a competitive edge in global markets by achieving economies of scale. According to the resource-based view (RBV), a firm can evaluate its current or potential partners by considering firm-level collaboration as a portfolio of complementary strategic resources. The specific focus of the study is on examining the types and forms of sawmill co-operation, how the co-operation emerged and which firm-specific resources are mainly related to co-operation. Based upon this, we can see how the managers of medium-sized sawmills perceive network co-operation as facilitating the achievement of a sustainable competitive advantage. The empirical data for this study were collected by interviewing 16 managers and employees in medium-sized non-integrated sawmills, a joint-venture marketing company and other co-operative partners. The findings of the study show that meaningful and beneficial co-operation partnerships exist in the Finnish sawmilling industry, but the sawmill managers do not perceive this collaboration as a strategic resource. The marketing company was the only firm in this study that relied on its co-operative networks in seeking a sustainable competitive advantage. To make more of co-operative partnerships, the principles of co-operative networking should be understood better in the sawmilling industry in order to know what to expect from co-operation. Furthermore, the managers should have the courage to engage in more extensive co-operation in order for strategic rents to materialize. Since the selection of the right partners is fundamental, further studies could be conducted on the reasons behind failed or terminated co-operative arrangements to gather further empirical knowledge in this subject area.
  • Toppinen, University of Helsinki, Department of Forest Sciences, P.O. Box 27, FI-00014 University of Helsinki, Finland E-mail: anne.toppinen@helsinki.fi (email)
  • Lähtinen, Finnish Environment Institute (SYKE), Joensuu, Finland E-mail: kl@nn.fi
  • Leskinen, Rantalankuja 4, Joensuu, Finland E-mail: lal@nn.fi
  • Österman, University of Helsinki, Department of Forest Sciences, P.O. Box 27, FI-00014 University of Helsinki, Finland E-mail: no@nn.fi

Category : Research note

article id 1544, category Research note
Osmo Mattila, Kaisa Hämäläinen, Liina Häyrinen, Sami Berghäll, Katja Lähtinen, Anne Toppinen. (2016). Strategic business networks in the Finnish wood products industry: a case of two small and medium-sized enterprises. Silva Fennica vol. 50 no. 3 article id 1544. https://doi.org/10.14214/sf.1544
Keywords: competitive advantage; wood products; network-based business models
Highlights: Network-based business models are not yet common in the wood products industry; Further research is suggested on network-based co-operation to vitalize industry.
Abstract | Full text in HTML | Full text in PDF | Author Info

The use of network-based business models has been brought up as a means of creating com-petitive edge in the tightening global competition. In practice, adopting network-based models has not yet become common in the wood products industry. The objective of this study is to gain better understanding of types of network-based business models using a case study of two small and medium-sized wood industry companies in Finland (for a sake of anonymity named as A and B). The network of company A is found to consist of mostly of established actors with a new-in-the-market value creation system, whereas network for company B is more stable and has an established value system aiming at growth and incremental innovations. Both networks had experienced difficulties in finding partners and lacked some strategic resources. Via this example we wish to stimulate further research interest on the sources of network-based competitive advantage in the traditional wood product industry in a need of renewal of business models.

  • Mattila, University of Helsinki, Department of Forest Sciences, FI-00014 Helsingin yliopisto, Finland E-mail: osmo.mattila@helsinki.fi
  • Hämäläinen, Siparila Oy, Varaslahdentie 1, FI-40800 Vaajakoski, Finland E-mail: kaisa.hamalainen@siparila.fi
  • Häyrinen, University of Helsinki, Department of Forest Sciences, FI-00014 Helsingin yliopisto, Finland E-mail: liina.hayrinen@helsinki.fi
  • Berghäll, University of Helsinki, Department of Forest Sciences, FI-00014 Helsingin yliopisto, Finland E-mail: sami.berghall@helsinki.fi
  • Lähtinen, University of Helsinki, Department of Forest Sciences, FI-00014 Helsingin yliopisto, Finland E-mail: katja.lahtinen@helsinki.fi
  • Toppinen, University of Helsinki, Department of Forest Sciences, FI-00014 Helsingin yliopisto, Finland E-mail: anne.toppinen@helsinki.fi (email)

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