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Sökning: AMNE:(NATURAL SCIENCES) > VTI - Statens väg- och transportforskningsinstitut

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1.
  • Andersson-Sköld, Yvonne, et al. (författare)
  • A framework for assessing urban greenery's effects and valuing its ecosystem services
  • 2018
  • Ingår i: Journal of Environmental Management. - : Academic Press. - 0301-4797 .- 1095-8630. ; 205, s. 274-285
  • Tidskriftsartikel (refereegranskat)abstract
    • Ongoing urban exploitation is increasing pressure to transform urban green spaces, while there is increasing awareness that greenery provides a range of important benefits to city residents. In efforts to help resolve associated problems we have developed a framework for integrated assessments of ecosystem service (ES) benefits and values provided by urban greenery, based on the ecosystem service cascade model. The aim is to provide a method for assessing the contribution to, and valuing, multiple ES provided by urban greenery that can be readily applied in routine planning processes. The framework is unique as it recognizes that an urban greenery comprises several components and functions that can contribute to multiple ecosystem services in one or more ways via different functional traits (e.g. foliage characteristics) for which readily measured indicators have been identified. The framework consists of five steps including compilation of an inventory of indicator; application of effectivity factors to rate indicators' effectiveness; estimation of effects; estimation of benefits for each ES; estimation of the total ES value of the ecosystem. The framework was applied to assess ecosystem services provided by trees, shrubs, herbs, birds, and bees, in green areas spanning an urban gradient in Gothenburg, Sweden. Estimates of perceived values of ecosystem services were obtained from interviews with the public and workshop activities with civil servants. The framework is systematic and transparent at all stages and appears to have potential utility in the existing spatial planning processes.
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2.
  • Levin, Lena, 1958-, et al. (författare)
  • Unpacking corrections in mobile instruction : Error-occasioned learning opportunities in driving, cycling and aviation training
  • 2017
  • Ingår i: Linguistics and Education. - : Elsevier BV. - 0898-5898 .- 1873-1864. ; 38, s. 11-23
  • Tidskriftsartikel (refereegranskat)abstract
    • This article deals with the organisation of correction in mobile instructional settings. Five sets of video data (>250 h) documenting how learners were instructed to fly aeroplanes, drive cars and ride bicycles in real life traffic were examined to reveal some common features of correction exchanges. Through detailed multimodal analysis of participants’ actions, it is shown how instructors systematically elaborate their corrective instructions to include relevant information about the trouble and remedial action – a practice we refer to as unpacking corrections. It is proposed that the practice of unpacking the local particulars of corrections (i) provides for the instructional character of the interaction, and (ii) is highly sensitive to the relevant physical and mobile contingencies. These findings contribute to the existing literature on the interactional organisation of correction and mobility, as well as to ongoing work in ethnomethodology and conversation analysis on teaching and learning as members’ phenomena.
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3.
  • Ebitu, Larmbert, et al. (författare)
  • Citizen science for sustainable agriculture : A systematic literature review
  • 2021
  • Ingår i: Land use policy. - : Elsevier. - 0264-8377 .- 1873-5754. ; 103
  • Forskningsöversikt (refereegranskat)abstract
    • Farmers as volunteers in research could potentially provide a rich resource for exploring sustainable agricultural research questions. To discern emerging patterns in citizen science-based studies on topics with relevance for sustainable agriculture and reveal salient challenges and opportunities for conducting such studies, we conducted a literature review of 27 articles from the period 2004–2019 of 250 publications screened from Google Scholar. These articles were thematically grouped under the topics: Soil health, climate adaptation, pest/pathogen monitoring, invasive species, inputs and outputs and pollination. Participants’ characteristics, motivations, study design and project outcomes in the reviewed articles were summarized and discussed. Both observational and experimental studies were represented in the articles, while emerging trends point towards field experimentation and ‘Large-N′ trials by lay farmers. Crowdsourcing lends itself to projects where the main role of the public is local visual observations and reporting, such as in pest/pathogen monitoring. Challenges included methodological issues such as validation procedures, but above all motivation, recruitment, and retention of volunteers. Despite the importance of participatory approaches for deeper citizen involvement for sustainability transitions and for the quality of knowledge outcomes, the role of citizens was overall restricted to data collection. Several of the methodologies proposed would be difficult to implement in low-income countries, and relatively few studies pertained to agricultural concerns of the global South. To lend value to farmers' time, we recommend projects relevant to livelihoods, health issues or local farming problems, accompanied by well-structured data feedback protocols, routing study results back to farmers.
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4.
  • Mourad, Khaldoon A, et al. (författare)
  • The role of citizen science in sustainable agriculture
  • 2020
  • Ingår i: Sustainability. - : MDPI. - 2071-1050. ; 12:24
  • Forskningsöversikt (refereegranskat)abstract
    • Farmers know much more than we think, and they are keen to improve their knowledge in order to improve their farms and increase their income. On the other hand, decision-makers, organizations, and researchers are increasing their use of citizen volunteers to strengthen their outcomes, enhance project implementation, and approach ecosystem sustainability. This paper assesses the role of citizen science relating to agricultural practices and covers citizen science literature on agriculture and farmers’ participation during the period 2007–2019. The literature was examined for the role of citizen science in supporting sustainable agriculture activities, pointing to opportunities, challenges, and recommendations. The study identified the following gaps: insufficient attention to (1) long-term capacity building and dialogue between academics and farming communities; (2) developing countries in the global South and smallholders; (3) agriculture trading and marketing; (4) the rationales of selecting target groups; (5) contributing to accelerated sustainability transitions. The main aim of the research projects reviewed in this study tended to focus on the research outcomes from an academic perspective, not sustainable solutions in practice or sustainability in general. More research is needed to address these gaps and to widen the benefits of citizen science in sustainable agricultural practices. 
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5.
  • Sand, Emilia, et al. (författare)
  • Effects of ground surface permeability on the growth of urban linden trees
  • 2018
  • Ingår i: Urban Ecosystems. - : Springer New York LLC. - 1083-8155 .- 1573-1642. ; , s. 1-6
  • Tidskriftsartikel (refereegranskat)abstract
    • Street trees are an important part of urban vegetation due to their provisioning of different types of ecosystem services such as local climate regulation and contribution to aesthetical and recreational values. In order to provide these services, urban trees need to endure many stress factors not present in natural environments, such as the widespread use of impervious surfaces in the vicinity of street trees. However, few studies have evaluated the effect of this potential stress factor on urban tree growth. The aim of this study was therefore to investigate how ground surface permeability affects stem and current-year shoot growth of linden (Tilia europaea) street trees in Gothenburg, Sweden. We found that a small fraction of permeable ground surface in the vertically projected tree crown area caused lower stem growth and strongly suppressed current-year shoot growth. This finding can guide future city planning, demonstrating that the vitality of street trees is compromised when the permeable surface area in the vicinity of the tree is small.
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6.
  • Andersson-Sköld, Yvonne, et al. (författare)
  • An integrated method for assessing climate-related risks and adaptation alternatives in urban areas
  • 2015
  • Ingår i: Climate Risk Management. - : Elsevier BV. - 2212-0963. ; 7, s. 31-50
  • Tidskriftsartikel (refereegranskat)abstract
    • © 2015 The Authors. The urban environment is a complex structure with interlinked social, ecological and technical structures. Global warming is expected to have a broad variety of impacts, which will add to the complexity. Climate changes will force adaptation, to reduce climate-related risks. Adaptation measures can address one aspect at the time, or aim for a holistic approach to avoid maladaptation. This paper presents a systematic, integrated approach for assessing alternatives for reducing the risks of heat waves, flooding and air pollution in urban settings, with the aim of reducing the risk of maladaptation. The study includes strategies covering different spatial scales, and both the current climate situation and the climate predicted under climate change scenarios. The adaptation strategies investigated included increasing vegetation; selecting density, height and colour of buildings; and retreat or resist (defend) against sea-level rise. Their effectiveness was assessed with regard to not only flooding, heat stress and air quality but also with regard to resource use, emissions to air (incl. GHG), soil and water, and people's perceptions and vulnerability. The effectiveness of the strategies were ranked on a common scale (from -3 to 3) in an integrated assessment. Integrated assessments are recommended, as they help identify the most sustainable solutions, but to reduce the risk of maladaptation they require experts from a variety of disciplines. The most generally applicable recommendation, derived from the integrated assessment here, taking into account both expertise from different municipal departments, literature surveys, life cycle assessments and publics perceptions, is to increase the urban greenery, as it contributes to several positive aspects such as heat stress mitigation, air quality improvement, effective storm-water and flood-risk management, and it has several positive social impacts. The most favourable alternative was compact, mid-rise, light coloured building design with large parks/green areas and trees near buildings.
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7.
  • Alatalo, Juha M., et al. (författare)
  • Dominance hierarchies, diversity and species richness of vascular plants in an alpine meadow: Contrasting short and medium termresponses to simulated global change
  • 2014
  • Ingår i: PeerJ. - : PeerJ Inc.. - 2167-8359. ; 2014:1
  • Tidskriftsartikel (refereegranskat)abstract
    • We studied the impact of simulated global change on a high alpine meadow plant community. Specifically, we examined whether short-term (5 years) responses are good predictors for medium-term (7 years) changes in the system by applying a factorial warming and nutrient manipulation to 20 plots in Latnjajaure, subarctic Sweden. Seven years of experimental warming and nutrient enhancement caused dramatic shifts in dominance hierarchies in response to the nutrient and the combined warming and nutrient enhancement treatments. Dominance hierarchies in the meadow moved from a community being dominated by cushion plants, deciduous, and evergreen shrubs to a community being dominated by grasses, sedges, and forbs. Short-termresponses were shown to be inconsistent in their ability to predict medium-term responses for most functional groups, however, grasses showed a consistent and very substantial increase in response to nutrient addition over the seven years. The non-linear responses over time point out the importance of longer-term studies with repeated measurements to be able to better predict future changes. Forecasted changes to temperature and nutrient availability have implications for trophic interactions, and may ultimately influence the access to and palatability of the forage for grazers. Depending on what anthropogenic change will be most pronounced in the future (increase in nutrient deposits, warming, or a combination of them both), different shifts in community dominance hierarchies may occur. Generally, this study supports the productivity-diversity relationship found across arctic habitats, with community diversity peaking in mid-productivity systems and degrading as nutrient availability increases further. This is likely due the increasing competition in plant-plant interactions and the shifting dominance structure with grasses taking over the experimental plots, suggesting that global change could have high costs to biodiversity in the Arctic. © 2014 Alatalo et al.
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8.
  • Ali, A., et al. (författare)
  • Diversity-productivity dependent resistance of an alpine plant community to different climate change scenarios
  • 2016
  • Ingår i: Ecological Research. - : Wiley. - 0912-3814 .- 1440-1703. ; 31:6, s. 935-945
  • Tidskriftsartikel (refereegranskat)abstract
    • Here we report from a experiment imposing different warming scenarios [control with ambient temperature, constant level of moderate warming for 3 years, stepwise increase in warming for 3 years, and one season of high level warming (pulse) simulating an extreme summer event] on an alpine ecosystem to study the impact on species diversity-biomass relationship, and community resistance in terms of biomass production. Multiple linear mixed models indicate that experimental years had stronger influence on biomass than warming scenarios and species diversity. Species diversity and biomass had almost humpback relationships under different warming scenarios over different experimental years. There was generally a negative diversity-biomass relationship, implying that a positive diversity-biomass relationship was not the case. The application of different warming scenarios did not change this tendency. The change in community resistance to all warming scenarios was generally negatively correlated with increasing species diversity, the strength of the correlation varying both between treatments and between years within treatments. The strong effect of experimental years was consistent with the notion that niche complementarity effects increase over time, and hence, higher biomass productivity over experimental years. The strongest negative relationship was found in the first year of the pulse treatment, indicating that the community had weak resistance to an extreme event of one season of abnormally warm climate. Biomass production started recovering during the two subsequent years. Contrasting biomass-related resistance emerged in the different treatments, indicating that micro sites within the same plant community may differ in their resistance to different warming scenarios.
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9.
  • Andersson-Sköld, Yvonne, 1957-, et al. (författare)
  • Development of the SUNRA Tool to Improve Regional and Local Sustainability of the Transportation Sector
  • 2022
  • Ingår i: Sustainability. - : MDPI AG. - 2071-1050. ; 14:18, s. 11275-
  • Tidskriftsartikel (refereegranskat)abstract
    • To fulfil the global sustainable development goals (SDGs), achieving sustainable development is becoming urgent, not least in the transportation sector. In response to this, the sustainability framework Sustainability National Road Administrations (SUNRA) was developed to contribute to improving the sustainability performance of national road administrations across Europe. In the present study, the framework has been tested, applied and further developed to be applicable for target setting and follow-up at the project level at both the Swedish Transport Administration (STA) and at municipal levels. The aim was a framework relevant for investment, re-investments, maintenance and operation projects and also to make it more user applicable. The study also investigated how the framework can contribute to sustainability, identified drivers and barriers for applying the framework and examined whether the framework can be applied and adapted to projects of different complexities. The adaptations and developments were done in collaboration between researchers and practitioners. The results show that the framework could easily be used and adapted for investment, re-investment, maintenance and operation projects in the planning stage, as well as for small municipal establishments, construction or reconstruction of residential areas and frequent maintenance. The framework contributes to increased awareness on sustainability, and it provides a common structure and transparency on how infrastructure project goals/targets are set and fulfilled. The framework can also be applied to follow the fulfilment of the goals/targets and thereby adapt the project to better fulfil the goals. Identified barriers include the lack of obligations and lack of experience in using sustainability frameworks.
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10.
  • Hagbert, Pernilla, et al. (författare)
  • Approaching change : Exploring cracks in the eco-modern sustainability paradigm
  • 2021
  • Ingår i: Environmental Values. - : White Horse Press. - 0963-2719 .- 1752-7015. ; 30:5, s. 613-634
  • Tidskriftsartikel (refereegranskat)abstract
    • Sustainability discourse offers a plethora of perspectives on the type of change needed to ensure a just development within planetary boundaries, and how that change could come about. Calls for radical transformations nonetheless under-line the need to examine prevalent discursive structures in society, including challenging the ‘ideology of growth’, in order to formulate new and trans-formative policy approaches. Based on empirical insights as to how different actors – including grassroots, planners, officials and politicians – in Sweden perceive the transformations needed to reach sustainability goals, this paper explores how narratives of change reproduce, make use of or show cracks in the eco-modern sustainability paradigm. © 2021, White Horse Press. All rights reserved.
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