| 1. |
- Felton, Adam, et al.
(author)
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Replacing monocultures with mixed-species : Ecosystem service implications of two production forest alternatives in Sweden
- 2016
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In: Ambio. - : Springer Science and Business Media LLC. - 0044-7447 .- 1654-7209. ; 45:Suppl. 2, s. 124-139
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Journal article (peer-reviewed)abstract
- Whereas there is evidence that mixed-species approaches to production forestry in general can provide positive outcomes relative to monocultures, it is less clear to what extent multiple benefits can be derived from specific mixed-species alternatives. To provide such insights requires evaluations of an encompassing suite of ecosystem services, biodiversity, and forest management considerations provided by specific mixtures and monocultures within a region. Here, we conduct such an assessment in Sweden by contrasting even-aged Norway spruce (Picea abies)-dominated stands, with mixed-species stands of spruce and birch (Betula pendula or B. pubescens), or spruce and Scots pine (Pinus sylvestris). By synthesizing the available evidence, we identify positive outcomes from mixtures including increased biodiversity, water quality, esthetic and recreational values, as well as reduced stand vulnerability to pest and pathogen damage. However, some uncertainties and risks were projected to increase, highlighting the importance of conducting comprehensive interdisciplinary evaluations when assessing the pros and cons of mixtures.
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| 2. |
- Felton, Adam, et al.
(author)
-
Replacing monocultures with mixed-species stands : Ecosystem service implications of two production forest alternatives in Sweden
- 2016
-
In: Ambio. - : Springer Science and Business Media LLC. - 0044-7447 .- 1654-7209. ; 45, s. 124-139
-
Journal article (peer-reviewed)abstract
- Whereas there is evidence that mixed-species approaches to production forestry in general can provide positive outcomes relative to monocultures, it is less clear to what extent multiple benefits can be derived from specific mixed-species alternatives. To provide such insights requires evaluations of an encompassing suite of ecosystem services, biodiversity, and forest management considerations provided by specific mixtures and monocultures within a region. Here, we conduct such an assessment in Sweden by contrasting even-aged Norway spruce (Picea abies)-dominated stands, with mixed-species stands of spruce and birch (Betula pendula or B. pubescens), or spruce and Scots pine (Pinus sylvestris). By synthesizing the available evidence, we identify positive outcomes from mixtures including increased biodiversity, water quality, esthetic and recreational values, as well as reduced stand vulnerability to pest and pathogen damage. However, some uncertainties and risks were projected to increase, highlighting the importance of conducting comprehensive interdisciplinary evaluations when assessing the pros and cons of mixtures.
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| 3. |
- Kroon, Johan, et al.
(author)
-
Increasing production value in Scots pine plantation through mixing with lodgepole pine
- 2019
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In: Scandinavian Journal of Forest Research. - : Taylor & Francis Group. - 0282-7581 .- 1651-1891. ; 34:8, s. 689-698
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Journal article (peer-reviewed)abstract
- Mixing tree species could be a silviculture model that allows early harvest of short-rotation trees, while longer-rotation crop trees remain in the stand. We examined the effects on growth and tree characteristics in a planted experiment with lodgepole pine (LP) and elite-bred Scots pine (SP) in mixed (50/50) and monospecific plots in three different spacings (at 28 years of age after planting). The future development under different thinning regimes, including net present value for one rotation, was analyzed using the Heureka simulation software. As expected, LP had higher survival and initially more rapid growth than SP, with highest stand productivity and biomass production in LP monoculture during a rotation period as a result. However, intimate mixtures of SP and LP at the two widest spacings could give greater production and economic benefits, compared to SP in monoculture. It seems that elite-bred SP will differ in competitiveness against LP, depending on spacing for growth and some quality traits (branch and bark thickness, height of green crown). The findings support developing management systems for combining sparsely planted, and expensive, elite-bred SP in mixture with other trees that maintains high stem volume production and secures certain properties of trees and stands.
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| 4. |
- Roberge, Jean-Michel, et al.
(author)
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Socio-ecological implications of modifying rotation lengths in forestry
- 2016
-
In: Ambio. - : Springer Science and Business Media LLC. - 0044-7447 .- 1654-7209. ; 45, s. 109-123
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Journal article (peer-reviewed)abstract
- The rotation length is a key component of even-aged forest management systems. Using Fennoscandian forestry as a case, we review the socioecological implications of modifying rotation lengths relative to current practice by evaluating effects on a range of ecosystem services and on biodiversity conservation. The effects of shortening rotations on provisioning services are expected to be mostly negative to neutral (e.g. production of wood, bilberries, reindeer forage), while those of extending rotations would be more varied. Shortening rotations may help limit damage by some of today's major damaging agents (e.g. root rot, cambium-feeding insects), but may also increase other damage types (e.g. regeneration pests) and impede climate mitigation. Supporting (water, soil nutrients) and cultural (aesthetics, cultural heritage) ecosystem services would generally be affected negatively by shortened rotations and positively by extended rotations, as would most biodiversity indicators. Several effect modifiers, such as changes to thinning regimes, could alter these patterns.
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| 5. |
- Bjärstig, Therese, Docent, 1978-, et al.
(author)
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A struggling collaborative process : revisiting the woodland key habitat concept in Swedish forests
- 2019
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In: Scandinavian Journal of Forest Research. - : Taylor & Francis Group. - 0282-7581 .- 1651-1891. ; 34:8, s. 699-708
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Journal article (peer-reviewed)abstract
- The term woodland key habitat (WKH) was launched in Sweden in 1990. Definitions for the concept have changed over the years, and today the WKH concept and its application are issues of debate in Sweden. Consequently, the Swedish Forestry Agency (SFA) initiated a collaborative process including forest stakeholders with the purpose to clarify the application and develop the inventory methodology of WKH. We have studied, by means of interviews and observations, participant perceptions of how endogenous and exogenous factors affect the collaborative process. During our research, we identified three game changers: the pause in WKH registration in northwestern Sweden that caused several participants to drop out of the process; budget allocations for new nationwide WKH inventories that put the process on hold; and formal instructions from the government that came nine months later and essentially re-initiated the collaborative process. Altogether, this not only affected the participants’ abilities, understanding and willingness to participate, but also the overall legitimacy of the process – indicating the difficulty of conducting policy development in collaborative form, especially when it is highly politicized since it impact on the participants’ anticipation of the process and its end results.
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| 6. |
- Felton, Adam, et al.
(author)
-
Varying rotation lengths in northern production forests: Implications for habitats provided by retention and production trees
- 2017
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In: AMBIO: A Journal of the Human Environment. - : Springer Science and Business Media LLC. - 0044-7447 .- 1654-7209. ; 46, s. 324-334
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Journal article (peer-reviewed)abstract
- Because of the limited spatial extent and comprehensiveness of protected areas, an increasing emphasis is being placed on conserving habitats which promote biodiversity within production forest. For this reason, alternative silvicultural programs need to be evaluated with respect to their implications for forest biodiversity, especially if these programs are likely to be adopted. Here we simulated the effect of varied rotation length and associated thinning regimes on habitat availability in Scots pine and Norway spruce production forests, with high and low productivity. Shorter rotation lengths reduced the contribution made by production trees (trees grown for industrial use) to the availability of key habitat features, while concurrently increasing the contribution from retention trees. The contribution of production trees to habitat features was larger for high productivity sites, than for low productivity sites. We conclude that shortened rotation lengths result in losses of the availability of habitat features that are key for biodiversity conservation and that increased retention practices may only partially compensate for this. Ensuring that conservation efforts better reflect the inherent variation in stand rotation lengths would help improve the maintenance of key forest habitats in production forests.
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| 7. |
- Hasslöf, Helen
(author)
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The educational challenge in "education for sustainable development" : qualification, social change and the political
- 2015
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Doctoral thesis (other academic/artistic)abstract
- This thesis explores how Education for Sustainable Development (ESD) as an overarching perspective makes meaningof educational aims and purposes. Sustainable development, as a concept, is by necessity complex, and deals withintegrated dimensions of environmental, social-cultural and economic sustainability. It involves a diverse range ofembedded values and ideologies and calls for engagement in value-related and political issues relating to environment,equality and lifestyle. In my thesis, I have turned to the actors in social practice who are set to realise the educationalperspectives of ESD – the teachers. Accordingly, the analyses departure from secondary and upper secondary schoolteachers’ reciprocal meaning-making when discussing the desirable aims of teaching and ESD. Building upon previouseducational research, the thesis has three purposes, and the results are presented in four articles. The results of thestudies bring new empirical knowledge and perspectives to educational research and practice, by adding furtherunderstanding of the political and democratic dimensions of ESD.The first purpose is to investigate and describe the complexity of the concept of sustainable development from a conflictperspective and to analyse meaning-making discussions of sustainability in an educational context. This is elaborated inthe first study (Article I). To achieve this, a Conflict Reflection Tool (CRT) has been developed, by combining theconflicting dynamics of sustainable development with dialogic and univocal functions of speech. In the included casestudy, the CRT analysis of teachers’ discussions shows how fact-based, univocal science utterances closed thediscussion for conflicting perspectives to emerge. However, conflicting views did emerge and were re-valued in adialogic genre through the interplay of different dimensions of sustainability and different societal levels of conflicts.The second purpose is to investigate how the desired aims of ESD are (re)articulated in areas of educational tension inorder to make particular meaning by teachers with experience in ESD practice. Three complex ESD areas are in focus,namely, the development of students as political subjects (Article II), qualification in relation to ESD (Article III), andeducation for social change in relation to ‘sustainable’ living (Article IV). In each of these areas, the functions ofqualification, socialisation and subjectification (c.f. Biesta) are relationally analysed to further problematise educationalpurposes. Through analyses with inpiration from discourse theory, the results show in Article II the emerging discourse ofcritical thinking as room for subjectification where students were invited to be adressed as political subjects. This discoursewas articulated in struggle with the aims of qualification and socialisation, i.e. challenged by elements articulating a morescientific and rational worldview. Article III shows three discourses of qualification. Of these three, scientific reasoningand awareness of complexity are articulated as contrasting epistemological discourses of qualification. However, in thethird discourse, qualification as critical thinking, these different epistemological views are articulated as intertwined asdifferent ways to view sustainability. Article IV shows how the teachers struggle between three positions: the rationalsubject, as a neutral conductor; the responsible subject, as a role model, or the reconstructing subject, as a reconstructor.The overlapping positions depend upon how socialisation towards sustainable lifestyles, political and ethical perspectivesare identified in relation to the educational aims and the emerging myths of social change.The third purpose is to develop analytical methods where conflicting articulations of environmental issues andsustainability are taken into account based on language and discourse theory for conducting empirical investigations ofmeaning-making.
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| 8. |
- Klapwijk, Maartje, et al.
(author)
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Capturing complexity : Forests, decision-making and climate change mitigation action
- 2018
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In: Global Environmental Change. - : Elsevier. - 0959-3780 .- 1872-9495. ; 52, s. 238-247
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Journal article (peer-reviewed)abstract
- Managed forests can play an important role in climate change mitigation due to their capacity to sequester carbon. However, it has proven difficult to harness their full potential for climate change mitigation. Managed forests are often referred to as socio-ecological systems as the human dimension is an integral part of the system. When attempting to change systems that are influenced by factors such as collective knowledge, social organization, understanding of the situation and values represented in society, initial intentions often shift due to the complexity of political, social and scientific interactions. Currently, the scientific literature is dispersed over the different factors related to the socio-ecological system. To examine the level of dispersion and to obtain a holistic view, we review climate change mitigation in the context of Swedish forest research. We introduce a heuristic framework to understand decision-making connected to climate change mitigation. We apply our framework to two themes which span different dimensions in the socio-ecological system: carbon accounting and bioenergy. A key finding in the literature was the perception that current uncertainties regarding the reliability of different methods of carbon accounting inhibits international agreement on the use of forests for climate change mitigation. This feeds into a strategic obstacle affecting the willingness of individual countries to implement forest-related carbon emission reduction policies. Decisions on the utilization of forests for bioenergy are impeded by a lack of knowledge regarding the resultant biophysical and social consequences. This interacts negatively with the development of institutional incentives regarding the production of bioenergy using forest products. Normative disagreement about acceptable forest use further affects these scientific discussions and therefore is an over-arching influence on decision-making. With our framework, we capture this complexity and make obstacles to decision-making more transparent to enable their more effective resolution. We have identified the main research areas concerned with the use of managed forest in climate change mitigation and the obstacles that are connected to decision making.
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| 9. |
- Lundmark, Tomas, et al.
(author)
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Carbon balance in production forestry in relation to rotation length
- 2018
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In: Canadian Journal of Forest Research. - : Canadian Science Publishing. - 0045-5067 .- 1208-6037. ; 48:6, s. 672-678
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Journal article (peer-reviewed)abstract
- The choice of a rotation length is an integral part of even-aged forest management regimes. In this study, we have simulated stand development and carbon pools in four even-aged stands representing the two most common tree species in Fennoscandia, Norway spruce (Picea abies) and Scots pine (Pinus sylvestris), growing on high and low productive sites. We hypothesized that increased rotation lengths (+10, +20 and +30 years) in comparison with today’s practice would increase forests’ average carbon stock during a rotation cycle, but decrease the average yield. The results showed that for spruce a moderate increase in rotation length (+10 years) increased both average standing carbon stock and average yield. For the longer alternatives (+20 and +30 years) for spruce and for all pine alternatives prolonging rotation lengths resulted in increased average standing carbon stocks but decreased average yield resulting in decreased carbon storage in forest products and decreased substitution effects. Decreasing the rotation lengths (-10 years) always resulted in both decreased average standing carbon stocks and decreased yields. We conclude that a moderate increase of rotation lengths may slightly increase forests’ climate benefits for spruce sites but for all other alternatives there was a trade-off between the temporary gain of increasing carbon stocks and the permanent loss in productivity and consequently substitution potential.
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| 10. |
- Mårald, Erland, 1970-, et al.
(author)
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Forest governance and management across time : developing a new forest social contract
- 2017
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Book (peer-reviewed)abstract
- The influence of the past, and of the future on current-time tradeoffs in the forest arena are particularly relevant given the long-term successions in forest landscapes and the hundred years' rotations in forestry. Historically established path dependencies and conflicts determine our present situation and delimit what is possible to achieve. Similarly, future trends and desires have a large influence on decision making. Nevertheless, decisions about forest governance and management are always made in the present – in the present-time appraisal of the developed situation, future alternatives and in negotiation between different perspectives, interests, and actors.This book explores historic and future outlooks as well as current tradeoffs and methods in forest governance and management. It emphasizes the generality and complexity with empirical data from Sweden and internationally. It first investigates, from a historical perspective, how previous forest policies and discourses have influenced current forest governance and management. Second, it considers methods to explore alternative forest futures and how the results from such investigations may influence the present. Third, it examines current methods of balancing tradeoffs in decision-making among ecosystem services. Based on the findings the authors develop an integrated approach – Reflexive Forestry – to support exchange of knowledge and understandings to enable capacity building and the establishment of common ground. Such societal agreements, or what the authors elaborate as forest social contracts, are sets of relational commitment between involved actors that may generate mutual action and a common directionality to meet contemporary challenges.
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| 11. |
- Santaniello, Francesca, et al.
(author)
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Climate impacts of retention forestry in a Swedish boreal pine forest
- 2018
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In: Journal of Land Use Science. - 1747-423X .- 1747-4248. ; 13, s. 301-318
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Journal article (peer-reviewed)abstract
- The excessive simplification of forest structure associated with clear cutting can carry risks for biodiversity. Tree retention is an alternative practice that maintains greater structural diversity, but its effects on climate change impacts relative to conventional harvesting are largely unexplored. By integrating field measurements from 12 forest stands with modelling approaches, we investigated the post-harvest effects on radiative forcing of tree retention in a Swedish boreal pine forest. In the near-term, impacts from carbon fluxes and surface albedo were of the same order of magnitude but with opposite sign (warming for carbon and cooling for albedo), with a net warming effect. In the long-term, the net effect turns to cooling, as the forest becomes a strong carbon sink. Retention had a significant effect on climate in the near-term, where differences between the various retention levels are more evident. At increasing tree retention, warming impacts from carbon fluxes tend to decrease, but cooling contributions from surface albedo are less pronounced. Balancing these effects, we find a net climate warming that increases with tree retention.
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| 12. |
- Santaniello, Francesca, et al.
(author)
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Simulated long-term effects of varying tree retention on wood production, dead wood and carbon stock changes
- 2017
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In: Journal of Environmental Management. - : Elsevier BV. - 0301-4797 .- 1095-8630. ; 201, s. 37-44
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Journal article (peer-reviewed)abstract
- Boreal forests are an important source of timber and pulp wood, but provide also other products and services. Utilizing a simulation program and field data from a tree retention experiment in a Scots pine forest in central Sweden, we simulated the consequences during the following 100 years of various levels of retention on production of merchantable wood, dead wood input (as a proxy for biodiversity), and carbon stock changes. At the stand level, wood production decreased with increased retention levels, while dead wood input and carbon stock increased. We also compared 12 scenarios representing a land sharing/land sparing gradient. In each scenario, a constant volume of wood was harvested with a specific level of retention in a 100-ha landscape. The area not needed to reach the defined volume was set-aside during a 100-year rotation period, leading to decreasing area of set-asides with increasing level of retention across the 12 scenarios. Dead wood input was positively affected by the level of tree retention whereas the average carbon stock decreased slightly with increasing level of tree retention. The scenarios will probably vary in how they favor species preferring different substrates. Therefore, we conclude that a larger variation of landscape-level conservation strategies, also including active creation of dead wood, may be an attractive complement to the existing management. (C) 2017 Elsevier Ltd. All rights reserved.
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| 13. |
- Soveri, Inga, et al.
(author)
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The IgG-degrading enzyme of Streptococcus pyogenes causes rapid clearance of anti-glomerular basement membrane antibodies in patients with refractory anti-glomerular basement membrane disease
- 2019
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In: Kidney International. - : Elsevier BV. - 0085-2538 .- 1523-1755. ; 96:5, s. 1234-1238
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Journal article (peer-reviewed)abstract
- In anti-glomerular basement membrane (anti-GBM) disease, IgG class autoantibodies induce rapidly progressive glomerulonephritis. Regrettably, many patients are diagnosed at a late stage when even intensive conventional treatment fails to restore renal function The endopeptidase IdeS (Immunoglobulin G degrading enzyme of Streptococcus pyogenes) (imliflidase) rapidly cleaves all human IgG subclasses into F(ab')(2) and Fc fragments. We received permission to treat three patients with refractory anti-GBM nephritis without pulmonary involvement on a compassionate basis. All patients were dialysis-dependent for days or weeks when treated, and all had high levels of circulating anti-GBM despite plasma exchange. A single dose of IdeS led to complete clearance of circulating anti-GBM antibodies in all three patients. After about a week, all rebounded but the rebounds were easily managed by plasma exchange in two of three cases. Renal histology demonstrated severe crescentic glomerulonephritis with acute but mainly chronic changes. Staining for the Fc fragment was negative in all while Fab was positive in two patients. Unfortunately, none of the patients regained independent renal function. Thus, treatment with IdeS led to rapid clearance of circulating and kidney bound antiGBM antibodies. The clinical utility, dosing and usage to preserve renal function remain to be determined.
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