Ola  Sallnaes

Prof. Ola Sallnaes


Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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13 May 2015 in Forests
Verified
Journal Article
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PBPeter Biber
Peter Biber
José G. BorgesJosé G. Borges
José G. Borges
RMRalf Moshammer
Ralf Moshammer
SBSusana Barreiro
Susana Barreiro
Brigite BotequimBrigite Botequim
Brigite Botequim
OSOla Sallnaes
Ola Sallnaes
While sustainable forestry in Europe is characterized by the provision of a multitude of forest ecosystem services, there exists no comprehensive study that scrutinizes their sensitivity to forest management on a pan-European scale, so far. We compile scenario runs from regionally tailored forest growth models and Decision Support Systems (DSS) from 20 case studies throughout Europe and analyze whether the ecosystem service provision depends on management intensity and other co-variables, comprising regional affiliation, social environment, and tree species composition. The simulation runs provide information about the case-specifically most important ecosystem services in terms of appropriate indicators. We found a strong positive correlation between management intensity and wood production, but only weak correlation with protective and socioeconomic forest functions. Interestingly, depending on the forest region, we found that biodiversity can react in both ways, positively and negatively, to increased management intensity. Thus, it may be in tradeoff or in synergy with wood production and forest resource maintenance. The covariables species composition and social environment are of punctual interest only, while the affiliation to a certain region often makes an important difference in terms of an ecosystem service’s treatment sensitivity.

25 December 2015 in Forests
Verified
Journal Article
Open access
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NSNarayanan Subramanian
Narayanan Subramanian
JBJohan Bergh
Johan Bergh
UJUlf Johansson
Ulf Johansson
UNUrban Nilsson
Urban Nilsson
OSOla Sallnaes
Ola Sallnaes
Even though the growth rates of most tree species in Sweden is expected to increase in the near future as a result of climate change, increased risks of damage by storms and various pests and pathogens, notably root rot and bark beetles, may also occur. Thus, forest management practices such as changes to thinning regimes, reductions in rotation lengths, and switching to other species (native or exotic) may represent adaptive management strategies to increase the resistance and resilience of Swedish forests to climate change. Clearly, thorough analyses examining the effects of anticipated climatic changes on damage levels, and the potentially relieving effects of possible management adaptations are needed before implementing such changes. In this study, damage caused by storms, root rot and bark beetles (single and in various combinations) under selected climate and management scenarios were simulated in Norway spruce (Pice abies L. Karst) stands. The results indicate that reductions in thinning intensity and rotation lengths could improve both volume production and profitability in southern Sweden. In addition, cultivation of rapidly growing species, such as hybrid larch (Larix × marschlinsii Coaz.) and hybrid aspen (Populus tremula L. × P. tremuloides Michx.), could be as profitable as Norway spruce cultivation, or even more profitable. However, slow-growing species, such as Silver birch (Betula pendula Roth), Downy birch (Betula pubescens Ehrh.) and European beech (Fagus sylvatica L.) indicated low economic output in terms of Land Expectation Value.

14 April 2011 in Natural Resources Forum
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Journal Article
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VBVilis Brukas
Vilis Brukas
AKAndrius Kuliešis
Andrius Kuliešis
OSOla Sallnaes
Ola Sallnaes
ELEdgaras Linkevičius
Edgaras Linkevičius

13 April 2017 in Sustainability
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Journal Article
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Christophe OrazioChristophe Orazio
Christophe Orazio
RMRebeca Cordero Montoya
Rebeca Cordero Montoya
MRMargot Régolini
Margot Régolini
José G. BorgesJosé G. Borges
José G. Borges
JGJordi Garcia-Gonzalo
Jordi Garcia-Gonzalo
OSOla Sallnaes
Ola Sallnaes
For forest sustainability and vulnerability assessment, the landscape scale is considered to be more and more relevant as the stand level approaches its known limitations. This review, which describes the main forest landscape simulation tools used in the 20 European case studies of the European project “Future-oriented integrated management of European forest landscapes” (INTEGRAL), gives an update on existing decision support tools to run landscape simulation from Mediterranean to boreal ecosystems. The main growth models and software available in Europe are described, and the strengths and weaknesses of different approaches are discussed. Trades-offs between input efforts and output are illustrated. Recommendations for the selection of a forest landscape simulator are given. The paper concludes by describing the need to have tools that are able to cope with climate change and the need to build more robust indicators for assessment of forest landscape sustainability and vulnerability.

2 February 2015 in Forests
Verified
Journal Article
Open access
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FRFrancesca Rinaldi
Francesca Rinaldi
Ragnar Klas Henrik JonssonRagnar Klas Henrik Jonsson
Ragnar Klas Henrik Jonsson
OSOla Sallnaes
Ola Sallnaes
RTRenats Trubins
Renats Trubins
Considering the variety of attitudes, objectives and behaviors characterizing forest owners is crucial for accurately assessing the impact of policy and market drivers on forest resources. A serious shortcoming of existing pan-European Decision Support Systems (DSS) is that they do not account for such heterogeneity, consequently disregarding the effects that this might have on timber supply and forest development. Linking a behavioral harvesting decision model—Expected Value Asymmetries (EVA)—to a forest resource dynamics model—European Forestry Dynamics Model (EFDM)—we provide an example of how forest owner specific characterization can be integrated in a DSS. The simulation results indicate that the approach holds promise as regards accounting for forest owner behavior in simulations of forest resources development. Hence, forest owner heterogeneity makes the distribution of forestland on owner types non-trivial, as it affects harvesting intensity and, subsequently, inter-temporal forest development.

30 April 2015 in Forests
Verified
Journal Article
Open access
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OSOla Sallnaes
Ola Sallnaes
ABAmbros Berger
Ambros Berger
MRMinna Räty
Minna Räty
RTRenats Trubins
Renats Trubins
In this paper a new concept for modeling uneven-aged forests (UEAF) is presented. The term UEAF in this article encloses all forests that deviate from the even-aged structure. The matrix model is area-based, in that the forest under study is described by a distribution of areas over fixed state-spaces spanned by stem number and volume per hectare classes. Dynamics is introduced as transitions of areas inside the state-space during the simulation. Harvesting activities and the occurrence of calamities are explicitly handled. The model is designed to be suitable for large-scale analyses. The concept was tested in an application to Austrian National Forest Inventory (NFI) data. Results shown, including a comparison to older inventory data, indicate that it is worth further elaborating on the concept and the model. The work will be continued and in the next step the model concept will be applied in several other countries.