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  • 1.
    Abdelgadir, Mohanad
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap. Södertörns högskola, Centrum för Östersjö- och Östeuropaforskning (CBEES), Baltic & East European Graduate School (BEEGS).
    Alharbi, Randa
    University of Tabuk, Saudi Arabia.
    AlRashidi, Monif
    University of Ha'il, Saudi Arabia.
    Alatawi, Abdulaziz S.
    University of Tabuk, Saudi Arabia.
    Sjöling, Sara
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Dinnétz, Patrik
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Distribution of denitrifiers predicted by correlative niche modeling of changing environmental conditions and future climatic scenarios across the Baltic Sea2023Inngår i: Ecological Informatics, ISSN 1574-9541, E-ISSN 1878-0512, Vol. 78, artikkel-id 102346Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Denitrifying microbial communities provide an important ecosystem function in aquatic systems. Yet, knowledge on predictive and modeling of these complex and changing communities is limited. The emergently challenging question of how the geographical distribution of denitrifiers responds to ongoing and future environmental change is not yet fully understood. In our study we use metadata-based correlative niche modeling to analyze the geographical distribution of selected putative denitrifiers in the genus Sphingomonas, Mycoplana, Shewanella, and Alteromonas at different predicted environmental conditions and future climatic scenarios across the Baltic Sea. Using the predictive power of an ensemble modeling approach and eight different machine-learning algorithms, habitat suitability and the distribution of the selected denitrifiers were evaluated using geophysical and bioclimatic variables, benthic conditions, and four Representative Concentration Pathway (RCP) trajectories of future global warming scenarios. All algorithms provided successful prediction capabilities both for variable importance, and for habitat suitability with Area Under the Curve (AUC) values between 0.89 and 1.00. Model findings revealed that salinity and nitrate concentrations significantly explained the variation in distribution of the selected denitrifiers. Rising temperatures of 0.8 to 1.8 °C at future RCP60–2050 trajectories are predicted to diminish or eliminate the bioclimatic suitable habitats for denitrifier distributions across the Baltic Sea. Multi-collated terrestrial and marine environmental variables contributed to the successful prediction of denitrifier distributions within the study area. The correlative niche modeling approach with high AUC values presented in the study allowed for accurate projections of the future distributions of the selected denitrifiers. The modeling approach can be used to improve our understanding of how ongoing and predicted future environmental changes may affect habitat suitability for organisms with denitrification capacity across the Baltic Sea.

    Fulltekst (pdf)
    fulltext
  • 2.
    Aburto, J.
    et al.
    Universidad Católica del Norte (UCN), Coquimbo, Chile.
    Gallardo Fernández, Gloria L.
    Uppsala universitet.
    Stotz, W.
    Universidad Católica del Norte (UCN), Coquimbo, Chile.
    Cerda, C.
    Universidad Católica del Norte (UCN), Coquimbo, Chile.
    Mondaca-Schachermayer, C.
    Universidad Católica del Norte (UCN), Coquimbo, Chile.
    Vera, K.
    Universidad Católica del Norte (UCN), Coquimbo, Chile.
    Territorial user rights for artisanal fisheries in Chile: intended and unintended outcomes2013Inngår i: Ocean and Coastal Management, ISSN 0964-5691, E-ISSN 1873-524X, Vol. 71, s. 284-295Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Granting property property rights in fisheries is assumed to provide incentives for sustainable resource exploitation. These rights might also open other income options for fishers, including some that go beyond the original objectives intended by authorities establishing the right. The opportunity for alternative uses is especially high if the details of these rights are not clearly identified. In Chile, a de novo TURF (Territorial User Rights for Fishery) system, called Management Exploitation Areas for Benthic Resources (Areas de Manejo y Explotacion de Recursos Bentonicos-AMERB) was created to achieve sustainable exploitation of benthic resources. This study compares two small-scale fishing communities in Chile, Guayacan and Huentelauquen, representing two typical contrasting settings, regarding geographical contexts and surroundings, origin, history, location, social embeddedness, main fisheries activities as well as the motivation and the process through which they acquired their AMERB. While in Guayacan the main fishing activity outside the AMERB is the giant squid and finfish fishery, in Huentelauquen the main and traditional activity has been diving for benthic resources. The objectives to acquire their AMERBs were different in both cases. Huentelauquen applied the AMERB for their traditional activity, the fishery of Concholepas concholepas ("loco"), thus in accordance with the official objective of the AMERB. Due to reduced catches of loco, fishers also added the collection of kelps, using their AMERB to control access to the entire coast surrounding their fishing community, beyond the limits of their AMERB. In Guayacan the AMERB, applied for the management of scallops and a species of red algae, began to be used for sea squirt aquaculture. Within the framework of sustainable fisheries implied by the AMERBs, there was in both cases a clear expectation to gain new sources of income. However with time both AMERBs are being used as a tool for territorial exclusion of other fishers beyond the limits of their respective AMERBs. In Huentelauquen fishers mention mostly negative aspects about the performance of their AMERB, given the poor economic results, being unsatisfied with the AMERB system in general, because they feel that the system disrupted their traditional migration along the coast. In Guayacan, fishers mentioned mostly positive aspects for their AMERB, as it was an opportunity to add new activities. Both examples show that rights-based management approaches are very attractive; they could promote new uses or developments, whose sustainability nevertheless needs to be analyzed further. The analyzed case studies show that, contrary to how the system was developed in Chile, a more bottom-up implementation of new management arrangements may make it easier to agree on common objectives, and/or leave more freedom for fishers to adjust and arrange their livelihood. Considering the importance the AMERBs have acquired for fishers, these kinds of systems need flexible regulations in order that fishers can adapt the system to local traditions, uses or needs and also to their learning and adapting capacities.

  • 3.
    Ahlbäck, Marcus
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Förnybara energikällor i media2018Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    To combat the rising global temperature Sweden have signed the Paris Agreement to limit the release of CO2 and keep the temperature to a minimum increase of 1,5 degrees. A transformation of today’s energy system towards renewable energy is paramount to this endeavour, which in part relies on public acceptance where media plays an important role inshaping public acceptance. This study aims to map acceptance of renewable energy sources and draws on framing theory, which states that the media focuses attention on certain events and gives information meaning, in a sense how something is presented to the audience influences their choices in how to process said information. As this is a qualitative study, 49 articles about bio-, geothermal, solar, water and wind energy from Sweden’s four major newspapers, Aftonbladet, Dagens Nyheter, Expressen and Svenska Dagbladet, have been gathered from the Svenska dagstidningar database and examined through frame analysis. Media framing contributing to public acceptance was bio- and solar energy while water subtracted from it. Wind energy were both contributing and subtracting from acceptance while geothermal lacked articles entirely, prohibiting it from entering public discourse altogether. Meanwhile the biggest deciding factor towards framing acceptance for renewable energy depended largely on the newspaper.

    Fulltekst (pdf)
    fulltext
  • 4.
    Aldén, Nina
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Is A Holistic Approach Relevant for Non-Governmental Organizations’ Agricultural Extension Strategies?: Case Studies from Tanzania2016Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    Agricultural extension can play a major part in the development and adoption of sustainable agriculture practices. Local NGOs have a unique opportunity to serve as extension agents due to their acceptance and close relationship in communities. The paper argues that agricultural extension needs to adopt a holistic approach to the communities’ development to achieve a lasting and sustainable agriculture. This study examines four NGOs in Tanzania to see 1) how they provide extension services; 2) if they have a holistic approach; and 3) if the holistic approach is a conscious strategy. The findings show that a mixture of extension methods is commonly used by all four of the NGOs. More over the NGOs offer a wide variety of projects, which focus on different issues. This results in a holistic approach, even though this probably is rather a result of funding practices than a conscious extension strategy.

    Fulltekst (pdf)
    Is A Holistic Approach Relevant for Non-Governmental Organizations’ Agricultural Extension Strategies?
  • 5.
    Aliyu, Habibu
    et al.
    Centre for Microbial Ecology and Genomics, University of Pretoria, Pretoria, South Africa.
    De Maayer, Pieter
    School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg, South Africa.
    Sjöling, Sara
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Cowan, Donald A.
    Centre for Microbial Ecology and Genomics, University of Pretoria, Pretoria, South Africa.
    Metagenomic Analysis of Low-Temperature Environments2017Inngår i: Psychrophiles: From Biodiversity to Biotechnology / [ed] Rosa Margesin, Cham: Springer, 2017, s. 389-421Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    The Earth’s permanently cold biosphere is known to harbour abundant microbial biomass and represents a rich resource for the discovery of novel cold-adapted microorganisms, many of which form part of the ‘microbial dark matter’ which cannot be analysed using traditional culture-dependent approaches. The recent development of metagenomics and related multi-omics strategies has provided a means by which entire microbial communities can be studied directly, without the prerequisite of culturing. The advancement of the ‘omic’ methods is directly linked to recent progress in high-throughput sequencing, robust data processing capabilities and the application of cutting-edge analytical tools for high-throughput detection of biomolecules. The combined application of these tools and strategies has provided an unprecedented access to the structure and potential function of microbial communities in cold environments, providing increasingly comprehensive insights into the taxonomic richness and functional capacity of the indigenous microorganisms. Applications of ‘omic’ strategies have enhanced our understanding of psychrophilic adaptation mechanisms, revealing the versatility and adaptability of life in the ‘cryosphere’. In addition to the predicted roles of psychrophiles in biogeochemical cycling, recent multi-omic studies have further emphasised the importance of the ‘cryosphere’ in influencing global atmospheric conditions. Finally, metagenomic bioprospecting of cold environments has yielded a variety of novel bioactive molecules including novel ‘psychrozymes’, with a wide range of potential industrial and biotechnological applications. Here, we have provided an overview of recent developments in metagenomic technologies and their application in the study of the cold biosphere.

  • 6.
    Andersson, Ingela
    et al.
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap. Södertörns högskola, Institutionen för livsvetenskaper, Geografi. Stockholm University, Department of Physical Geography and Quarternary Geology.
    Petersson, Mona
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap. Södertörns högskola, Institutionen för livsvetenskaper, Geografi.
    Jarsjö, Jerker
    Stockholm University, Department of Physical Geography and Quarternary Geology.
    Impact of the European Water Framework Directive on local-level water management: Case study Oxunda Catchment, Sweden2012Inngår i: Land use policy, ISSN 0264-8377, E-ISSN 1873-5754, Vol. 29, nr 1, s. 73-82Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Water Framework Directive (WFD) of the European Union provides a common framework for water policy that focuses on holistic and integrated water management in river basins. In many member states, implementation of the WFD has shifted the main responsibility for local water issues from the municipal level to the regional or supra-regional levels. In this study, we investigated how the implementation of the WFD has influenced local-level water management including the interpretation of the new environmental quality standards. Specifically, we considered Sweden, which has traditionally had relatively strong governance at the municipal level. Because a sufficient amount of time has now passed for evaluation of WFD-related effects on operational water handling, we interviewed individuals directly involved in water planning and land use planning at the municipal level in one sub catchment in the Northern Baltic Sea River Basin District of Sweden, as well as representatives for superior levels and associations. Despite divergent views regarding the priority of water issues in physical planning among the local-level planners interviewed, they had all participated in successful inter-municipal pre-WFD collaboration projects. Although such collaborations could help increase the understanding and acceptance of WFD-related goals and costs, as well as facilitate conflict solving, as shown in the Oxunda Catchment, they have not gained much attention in the WFD implementation process. Additionally, physical planners have generally been reluctant to accept new environmental quality standards resulting from WFD implementation, in part because they lack precise definitions, but also because they could challenge the municipal routine of weighing various objectives against each other. Furthermore, despite WFD-related increases in ambition levels, lack of resource improvements at the municipal level were identified as potential problems by local environmental planners.

  • 7.
    Andersson, Pernilla
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap. Södertörns högskola, Lärarutbildningen.
    Business as un-usual through dislocatory moments – change for sustainability and scope for subjectivity in classroom practice2018Inngår i: Environmental Education Research, ISSN 1350-4622, E-ISSN 1469-5871, Vol. 24, nr 5, s. 648-662Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper makes a contribution to the debate that has been described as a tension between instrumental and emancipatory educational objectives in environment and sustainability education. The contribution involves a methodological approach (introd-) using the concept ‘dislocatory moments’, to identify and analyse moments in classroom practice that address educational objectives relating to ‘change for sustainability’ and ‘thinking and acting independently’. A case of business education, when ‘sustainable development’ is integrated in a series of lessons, is used to exemplify the approach involving analysis of the emergence and closure of a dislocatory moment and the change of logics that occur. The illustrative case shows how room for subjectivity and change can be intertwined in educational practice. It is suggested that the methodological approach could be used in empirical research of classroom practice to further knowledge about the kind of situations that contribute to ‘business as un-usual’ without compromising emancipatory education ideals.

  • 8.
    Andersson, Pernilla
    Stockholms universitet.
    Talking about sustainability issues when teaching business economics ‐ the ‘positioning’ of a responsible business person in classroom practice2018Inngår i: Journal of Social Science Education, E-ISSN 1618-5293, Vol. 17, nr 3, s. 46-62Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose: The paper presents a study of the roles of a business person privileged by teachers when the concept of ‘sustainable development’ is incorporated into the subject of business economics.

    Methodology: A logics approach to discourse analysis was used to analyse the empirical material, which consisted of video recorded observations in five teachers’ classrooms collected two years after the inclusion of the concept ‘sustainable development’ in the upper secondary school syllabus in Sweden.

    Findings: The results show how different rules and conditions for doing business are foregrounded in classroom practice. This in turn has different implications for whether a responsible business person is expected to: a) adapt to self-interest, b) respond to customers’ increasing interests in sustainable products, or c) be sensitive to the needs or interests of others (including humans, animals and nature), when making business decisions.   The results also illuminate how talking about ‘homo economicus’ as ‘real’ can hinder, how talking about customers in altruistic terms can facilitate, and how talking about the complexity of others’ interests can suggest ways of doing business (more) sustainably.

    Practical implications: The empirical examples that illuminate the privileging of specific roles could be used for critical reflection in order to make students better equipped to address uncertain and complex sustainability issues.

  • 9.
    Andersson, Pernilla
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap. Södertörns högskola, Lärarutbildningen.
    The Responsible Business Person: Studies of business education for sustainability2016Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Calls for the inclusion of sustainable development in the business curriculum have increased significantly in the wake of the financial crisis and increased concerns around climate change. This has led to the appearance of new initiatives and the development of new teaching approaches. This thesis explores business education at the upper secondary school level in Sweden following the inclusion of the concept of sustainable development in the curriculum. Drawing on poststructuralist discourse theory, the overarching purpose is to identify the roles of a responsible business person that are articulated in business education and to discuss how these roles could enable students to address sustainability issues. The thesis consists of four studies, based on textbook analyses, teacher interviews and classroom observations. Three categories of roles have been identified, implying that a business person is expected to either adapt to, add or create ethical values. These three categories are compared with the roles indicated in the environmental discourses constructed by Dryzek and the responsibility regimes developed by Pellizzoni. Drawing on Dryzek’s and Pellizzoni’s reasoning about which qualities are important for addressing sustainability issues, it is concluded that the roles identified in the studies could mean that students are unequipped (the adapting role), ill-equipped (the adding role) or better equipped (the creating role) to address uncertain and complex sustainability issues. The articles include empirical examples that illustrate how and in which situations specific roles are articulated, privileged or taken up. The examples also indicate how the scope for business students’ subjectivities are facilitated or hampered. It is suggested that the illustrative empirical examples could be used for critical reflection in order to enhance students’capabilities of addressing uncertain and complex sustainability issues and to improve educational quality in terms of scope for subjectivity.

    Fulltekst (pdf)
    The Responsible Business Person: Studies of business education for sustainability
    Download (jpg)
    presentationsbild
  • 10.
    Andersson, Sara
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Sundström, Lovisa
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Gröna tak och hållbar urban utveckling: en fallstudie av stadsutvecklingsprojektet Norra Djurgårdsstaden i Stockholm2020Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Mänskligheten står inför en framtid med klimatförändringar och utmaningar i form av återkommande värmeböljor, ökad nederbörd, urbanisering samt minskad biologisk mångfald. Det blir allt mer attraktivt att bosätta sig i städer och i kombination med befolkningsökningen sker det en snabb global urbanisering. Detta leder till hög exploateringshastighet i våra städer då andelen hårdgjorda ytor ökar och andelen gröna ytor minskar. Vid byggandet av fastigheter tillkommer en stor mängd outnyttjade ytor, ofta i form av mörka tak. Dessa är inte bara outnyttjade ytor på dyr tomtmark utan skapar ytterligare problem kopplade till urbanisering i form av bland annat minskat albedo. Närhet till grönska gör att människor mår både fysiskt och psykiskt bättre vilket avspeglar sig i en högre betalningsvilja för bostäder i närhet till grönska. Privatpersoner samt fastighetsägare vill gärna profilera sig som hållbara då hållbarhet på senare tid kommit att bli en identitetsskapande “statusmarkör”. Hållbara bostäder kan därmed vara en säljande faktor. Grönska på taken är i sig inget nytt påfund men har senaste åren fått en renässans i Sverige då det visat sig kunna ge fördelar såsom tillgång till grönska för de boende, dagvattenhantering, minskad värmeöeffekt och bättre luftkvalitet. Syftet med studien har varit att undersöka hur ett av Europas mest omfattande stadsutvecklingsprojekt, Norra Djurgårdsstaden i Stockholm, arbetar med hållbar urban utveckling genom gröna tak. De gröna taken kan generera en mängd ekonomiska, ekologiska och sociala fördelar i städer. I studien används urban hållbarhetsteori samt ett egenkonstruerat analysramverk baserat på avsnittet tidigare forskning och teori. Genom en kvalitativ innehållsanalys samt semistrukturerade intervjuer har det framkommit i denna studie att den sociala dimensionen av hållbar stadsutveckling utifrån gröna tak i Norra Djurgårdsstaden överskuggas av de två andra aspekterna; ekonomiskt och ekologiskt. Detta trots att hållbarhetsarbetet med Norra Djurgårdsstaden tagit med alla tre aspekter inom hållbar utveckling; ekonomiskt, ekologiskt och socialt i beaktande när det kommer till planering av stadsdelen.

    Fulltekst (pdf)
    Gröna tak och hållbar urban utveckling
  • 11.
    Andrén, Elinor
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    van Wirdum, Falkje
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Norbäck Ivarsson, Lena
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Lönn, Mikael
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Moros, Matthias
    Leibniz Institute for Baltic Sea Research Warnemünde, Rostock, Germany.
    Andrén, Thomas
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Medieval versus recent environmental conditions in the Baltic Proper, what was different a thousand years ago?2020Inngår i: Palaeogeography, Palaeoclimatology, Palaeoecology, ISSN 0031-0182, E-ISSN 1872-616X, Vol. 555, artikkel-id 109878Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A sediment record from the western Gotland Basin, northwestern Baltic Proper, covering the last 1200 years, was investigated for past changes in climate and the environment using diatoms as a proxy. The aim is to compare the environmental conditions reconstructed during Medieval times with settings occurring the last century under influence of environmental stressors like eutrophication and climate change. The study core records more marine conditions in the western Gotland Basin surface waters during the Medieval Climate Anomaly (MCA; 950–1250C.E.), with a salinity of at least 8 psu compared to the present 6.5 psu. The higher salinity together with a strong summer-autumn stratification caused by warmer climate resulted in extensive long-lasting diatom blooms of Pseudosolenia calcar-avis, effectively enhancing the vertical export of organic carbon to the sediment and contributing to benthic hypoxia. Accordingly, our data support that a warm and dry climate induced the extensive hypoxic areas in the open Baltic Sea during the MCA. During the Little ice Age (LIA; 1400–1700C.E.), the study core records oxic bottom water conditions, decreasing salinity and less primary production. This was succeeded during the 20th century, about 1940, by environmental changes caused by human-induced eutrophication. Impact of climate change is visible in the diatom composition data starting about 1975C.E. and becoming more pronounced 2000C.E., visible as an increase of taxa that thrived in stratified waters during autumn blooms typically due to climate warming.

    Fulltekst (pdf)
    fulltext
  • 12.
    Andrén, Thomas
    Stockholms universitet.
    Östersjön under åttatusen år: dagens situation är inte ny.2006Inngår i: Östersjön: hot och hopp / [ed] Birgitta Johansson, Stockholm: Forskningsrådet Formas, 2006, s. 41-50Kapittel i bok, del av antologi (Annet (populærvitenskap, debatt, mm))
  • 13.
    Andrén, Thomas
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Andrén, Elinor
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Zhang, Rui
    Xiamen University, China.
    Baltic Sea Basin Paleoenvironment: paleoenvironmental evolution of the Baltic Sea Basin through the last glacial cycle2014Rapport (Annet vitenskapelig)
  • 14.
    Andrén, Thomas
    et al.
    Södertörns högskola, Institutionen för livsvetenskaper, Miljövetenskap.
    Jørgensen, B. B.
    Aarhus Universit, Denmark.
    Cotterill, C.
    British Geological Survey, UK.
    Baltic Sea Basin Paleoenvironment: paleoenvironmental evolution of the Baltic Sea Basin through the last glacial cycle2012Rapport (Annet vitenskapelig)
  • 15.
    Andrén, Thomas
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Jørgensen, Bo Barker
    Cotterill, Carol
    Green, Sophie
    Andrén, Elinor
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Baltic Sea Basin Paleoenvironment: Expedition 347 of the mission-specific drilling platform  from and to Kiel, Germany Sites M0059–M0067  12 September–1 November 20132015Rapport (Annet vitenskapelig)
  • 16.
    Arnborg, Benjamin
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Nordström Isaksson, Erik
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Urban karaktär och andelen offentligt ägd mark hör ihop med andelen landbaserat naturskydd för svenska kommuner2023Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    Preserving and sustainably using biological diversity has long been considered, both on a Swedish and global level, to be a prerequisite for continued life on earth. Important tools to stop the ongoing species loss include, among other things, nature conservation measures. In Sweden, municipalities have a role in ensuring that the ambitions around nature protection, which the world community is united on, are realized in the Swedish context. A quick overview of the circumstances reveals that Sweden is currently not reaching these ambitions. Only a few municipalities achieve desirable levels and a large majority, we argue, can in this context be classified as substandard. Possible explanations for this situation are an important knowledge contribution for the future. The aim of this study is to contribute precisely this knowledge, through extensive statistical analysis of variables that can conceivably make visible which municipal conditions are important for the municipalities' degree of nature protection (in this study limited to land-based nature protection). The results indicate that urban character traits and how much of the respective municipality's land is owned by the public have great significance for how much nature is protected. We also draw attention to the fact that the ecosystem approach - the management strategy that in Sweden is to be the basis for nature conservation efforts - contains elements that, together with the prevailing governance model and certain circumstances, have the potential to delay or even block nature conservation efforts. However, the low levels of nature protection in many municipalities could partly be explained by the fact that other important aspects of the ecosystem approach are not fully implemented. The study contributes to multiple interesting observations that could possibly be further explored in future studies.

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  • 17.
    Asghar, Naveed
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Ticks and Tick-borne Encephalitis Virus: From Nature to Infection2016Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Vector-borne diseases are an increasing global threat to humans due to climate changes, elevating the risk of infections transmitted by mosquitos, ticks, and other arthropod vectors. Ixodes ricinus, a common tick in Europe, transmits dangerous tick-borne pathogens to humans. Tick-borne encephalitis (TBE) is a vector-borne disease caused by TBE virus (TBEV). Climate change has contributed to increased tick abundance and incidence of tick-borne diseases, and between 10,000 and 15,000 human TBE cases are reported annually in Europe and Asia. TBEV shows a patchy geographical distribution pattern where each patch represents a natural focus. In nature, TBEV is maintained within the tick-rodent enzootic cycle. Co-feeding is the main route for TBEV transmission from infected to uninfected ticks and for maintenance within the natural foci. The increasing number of TBE cases in Scandinavia highlights the importance of characterizing additional TBEV sequences and of identifying novel natural foci, and in this work we sequenced and phylogenetically characterized four TBEV strains: Saringe-2009 (from a blood-fed nymph), JP-296 (from a questing adult male), JP-554 (from a questing adult male), and Mandal-2009 (from a pool of questing nymphs, n = 10). Mandal-2009 represents a TBEV genome from a natural focus in southern Norway. Saringe-2009 is from a natural endemic focus in northern Stockholm, Sweden, and JP-296 and JP-554 originate from a natural focus “Torö” in southern Stockholm. In addition, we have studied the effect of different biotic and abiotic factors on population dynamics of I. ricinus in southern Stockholm and observed significant spatiotemporal variations in tick activity patterns. Seasonal synchrony of immature stages and total tick abundance are important factors for the probability of horizontal transmission of TBEV among co-feeding ticks. We found that the probability of co-occurrence of larvae, nymphs, and female adults was highest during early summer whereas increasing vegetation height and increasing amounts of forest and open water around the study sites had a significant negative effect on co-occurrence of larvae, nymphs, and female adults.

    The proximal part of the 3 ́non-coding region (3 ́NCR) of TBEV contains an internal poly(A) tract, and genomic analysis of Saringe-2009 revealed variability in the poly(A) tract indicating the existence of different variants within the TBEV pool of Saringe-2009. Like other RNA viruses, TBEV exists as swarms of unique variants called quasispecies. Because Saringe-2009 came from an engorged nymph that had been feeding on blood for >60 h, we propose that Saringe-2009 represents a putative shift in the TBEV pool when the virus switches from ectothermic/tick to endothermic/mammalian environments. We investigated the role of poly(A) tract variability in replication and virulence of TBEV by generating two infectious clones of the TBEV strain Toro-2003, one with a short/wild-type (A)3C(A)6 poly(A) tract and one with a long (A)3C(A)38 poly(A) tract. The infectious clone with the long poly(A) tract showed poor replication in cell culture but was more virulent in C57BL/6 mice than the wild-type clone. RNA folding predictions of the TBEV genomes suggested that insertion of a long poly(A) tract abolishes a stem loop structure at the beginning of the 3 ́NCR. Next generation sequencing (NGS) analysis of the TBEV genomes after passaging in cell culture and/or mouse brain revealed molecular determinants and quasispecies structure that might contribute to the observed differences in virulence. Our findings suggest that the long poly(A) tract imparts instability to the TBEV genome resulting in higher quasispecies diversity that in turn contributes to TBEV virulence. Phylogenetic analysis of Saringe-2009, JP-296, JP-554, and Mandal-2009 predicted a strong evolutionary relationship among the four strains. They clustered with Toro-2003, the first TBEV strain from Torö, demonstrating a Scandinavian clade. Except for the proximal part of the 3 ́NCR, TBEV is highly conserved in its genomic structure. Genomic analysis revealed that Mandal-2009 contains a truncated 3 ́NCR similar to the highly virulent strain Hypr, whereas JP-296 and JP-554 have a genomic organization identical to Toro-2003, the prototypic TBEV strain from the same natural focus. NGS revealed significantly higher quasispecies diversity for JP-296 and JP-554 compared to Mandal-2009. In addition, single nucleotide polymerphism (SNP) analysis showed that 40% of the SNPs were common between quasispecies populations of JP-296 and JP-554, indicating the persistence and maintenance of TBEV quasispecies within the natural focus.

    Taken together, these findings indicate the importance of environmental factors for the occurrence pattern of the different life-stages of the tick vector, which are important for the persistence of TBEV in nature. Our findings also show that the selection pressure exerted by specific host also affects the population structure of the TBEV quasispecies. In addition, our results further demonstrate that the evolution of quasispecies has effect on TBEV virulence in mice.

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    Ticks and Tick-borne Encephalitis Virus: From nature to infection
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  • 18.
    Asghar, Naveed
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Biologi. Örebro universitet.
    Lee, Yi-Ping
    Umeå universitet.
    Nilsson, Emma
    Umeå universitet.
    Lindqvist, Rickard
    Umeå universitet.
    Melik, Wessam
    Örebro universitet.
    Kröger, Andrea
    6Helmholtz Centre for Infection Research, Braunschweig, Germany / University of Magdeburg, Magdenbrug, Germany.
    Överby, Anna K.
    Umeå universitet.
    Johansson, Magnus
    Örebro universitet.
    The role of the poly(A) tract in the replication and virulence of tick-borne encephalitis virus2016Inngår i: Scientific Reports, E-ISSN 2045-2322, nr 6, artikkel-id 39265Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The tick-borne encephalitis virus (TBEV) is a flavivirus transmitted to humans, usually via tick bites. The virus causes tick-borne encephalitis (TBE) in humans, and symptoms range from mild flu-like symptoms to severe and long-lasting sequelae, including permanent brain damage. It has been suggested that within the population of viruses transmitted to the mammalian host, quasispecies with neurotropic properties might become dominant in the host resulting in neurological symptoms. We previously demonstrated the existence of TBEV variants with variable poly(A) tracts within a single blood-fed tick. To characterize the role of the poly(A) tract in TBEV replication and virulence, we generated infectious clones of Torö-2003 with the wild-type (A)3C(A)6 sequence (Torö-6A) or with a modified (A)3C(A)38 sequence (Torö-38A). Torö-38A replicated poorly compared to Torö-6A in cell culture, but Torö-38A was more virulent than Torö-6A in a mouse model of TBE. Next-generation sequencing of TBEV genomes after passaging in cell culture and/or mouse brain revealed mutations in specific genomic regions and the presence of quasispecies that might contribute to the observed differences in virulence. These data suggest a role for quasispecies development within the poly(A) tract as a virulence determinant for TBEV in mice.

  • 19.
    Asghar, Naveed
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Biologi. Örebro universitet.
    Petersson, Mona
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Geografi.
    Johansson, Magnus
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Biologi. Örebro univarsitet.
    Dinnétz, Patrik
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Local land-scape effects on population dynamics of Ixodes ricinus2016Inngår i: Geospatial Health, ISSN 1827-1987, Vol. 11, s. 283-289, artikkel-id 487Artikkel i tidsskrift (Fagfellevurdert)
    Fulltekst (pdf)
    fulltext
  • 20.
    Asghar, Naveed
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Biologi. Örebro universitet.
    Pettersson, John H-O
    Norwegian Institute of Public Health, Oslo, Norway / Statens veterinärmedicinska anstalt.
    Dinnétz, Patrik
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Andreassen, Åshild
    Norwegian Institute of Public Health, Oslo, Norway.
    Johansson, Magnus
    Örebro universitet.
    Deep sequencing analysis of tick-borne encephalitis virus from questing ticks at natural foci reveals similarities between quasispecies pools of the virus2017Inngår i: Journal of General Virology, ISSN 0022-1317, E-ISSN 1465-2099, Vol. 98, nr 3, s. 413-421Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Every year, tick-borne encephalitis virus (TBEV) causes severe central nervous system infection in 10 000 to 15 000 people in Europe and Asia. TBEV is maintained in the environment by an enzootic cycle that requires a tick vector and a vertebrate host, and the adaptation of TBEV to vertebrate and invertebrate environments is essential for TBEV persistence in nature. This adaptation is facilitated by the error-prone nature of the virus's RNA-dependent RNA polymerase, which generates genetically distinct virus variants called quasispecies. TBEV shows a focal geographical distribution pattern where each focus represents a TBEV hotspot. Here, we sequenced and characterized two TBEV genomes, JP-296 and JP-554, from questing Ixodes ricinus ticks at a TBEV focus in central Sweden. Phylogenetic analysis showed geographical clustering among the newly sequenced strains and three previously sequenced Scandinavian strains, Toro-2003, Saringe-2009 and Mandal-2009, which originated from the same ancestor. Among these five Scandinavian TBEV strains, only Mandal-2009 showed a large deletion within the 3' non-coding region (NCR), similar to the highly virulent TBEV strain Hypr. Deep sequencing of JP-296, JP-554 and Mandal-2009 revealed significantly high quasispecies diversity for JP-296 and JP-554, with intact 3' NCRs, compared to the low diversity in Mandal-2009, with a truncated 3' NCR. Single-nucleotide polymorphism analysis showed that 40% of the single-nucleotide polymorphisms were common between quasispecies populations of JP-296 and JP-554, indicating a putative mechanism for how TBEV persists and is maintained within its natural foci.

  • 21.
    Asplund, Maria E.
    et al.
    Department of Biological and Environmental Sciences, University of Gothenburg, Fiskebäckskil, Sweden.
    Bonaglia, Stefano
    Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden.
    Boström, Christoffer
    Faculty of Science and Engineering, Environmental and Marine Biology, Åbo Akademi University, Åbo, Finland.
    Dahl, Martin
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Deyanova, Diana
    Department of Biological and Environmental Sciences, University of Gothenburg, Fiskebäckskil, Sweden.
    Gagnon, Karine
    Faculty of Science and Engineering, Environmental and Marine Biology, Åbo Akademi University, Åbo, Finland.
    Gullström, Martin
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Holmer, Marianne
    Department of Biology, Danish Institute for Advanced Study, University of Southern Denmark, Odense, Denmark.
    Björk, Mats
    Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden.
    Methane Emissions From Nordic Seagrass Meadow Sediments2022Inngår i: Frontiers in Marine Science, E-ISSN 2296-7745, Vol. 8, artikkel-id 811533Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Shallow coastal soft bottoms are important carbon sinks. Submerged vegetation has been shown to sequester carbon, increase sedimentary organic carbon (C-org) and thus suppress greenhouse gas (GHG) emissions. The ongoing regression of seagrass cover in many areas of the world can therefore lead to accelerated emission of GHGs. In Nordic waters, seagrass meadows have a high capacity for carbon storage, with some areas being recognized as blue carbon hotspots. To what extent these carbon stocks lead to emission of methane (CH4) is not yet known. We investigated benthic CH4 emission (i.e., net release from the sediment) in relation to seagrass (i.e. Zostera marina) cover and sedimentary C-org content (%) during the warm summer period (when emissions are likely to be highest). Methane exchange was measured in situ with benthic chambers at nine sites distributed in three regions along a salinity gradient from similar to 6 in the Baltic Sea (Finland) to similar to 20 in Kattegat (Denmark) and similar to 26 in Skagerrak (Sweden). The net release of CH4 from seagrass sediments and adjacent unvegetated areas was generally low compared to other coastal habitats in the region (such as mussel banks and wetlands) and to other seagrass areas worldwide. The lowest net release was found in Finland. We found a positive relationship between CH4 net release and sedimentary C-org content in both seagrass meadows and unvegetated areas, whereas no clear relationship between seagrass cover and CH4 net release was observed. Overall, the data suggest that Nordic Zostera marina meadows release average levels of CH4 ranging from 0.3 to 3.0 mu g CH4 m(-2) h(-1), which is at least 12-78 times lower (CO2 equivalents) than their carbon accumulation rates previously estimated from seagrass meadows in the region, thereby not hampering their role as carbon sinks. Thus, the relatively weak CH4 emissions from Nordic Z. marina meadows will not outweigh their importance as carbon sinks under present environmental conditions.

    Fulltekst (pdf)
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  • 22.
    Asplund, Moa
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Hauffman, Anna
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Effekter av en ökande befolkning och ett ökat besökstryck i urbana och peri-urbana grönområden: En fallstudie av tre kommuner i Stockholmsregionen2022Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Världens befolkning ökar idag i rask takt. Om cirka 30 år beräknas det bo närmare tio miljarder människor i världen, varav över sex miljarder beräknas bo urbant. Urbaniseringen ökar kraftigt vilket sätter stor press på den fysiska planeringen. För att kunna inhysa en ökande befolkning är det många kommuner som satsar på att förtäta städerna. Dock leder förtätning till att de grönområden som finns i städerna blir allt färre vilket gör att städerna blir fragmenterade och att invånarna får allt längre till rekreationsområden. Vilka är viktiga för människans hälsa och välbefinnande. Städer måste ha grönområden som klarar ett ökat besökstryck eftersom slitaget ökar. Slitage, förändrad markanvändning och fragmentering påverkar biologisk mångfald och ekosystemtjänster negativt, både lokalt och regionalt. Ett samhälle med låg biologisk mångfald och få ekosystemtjänster har sämre förutsättningar för att klara chock och stress såsom pandemier och en ökad befolkning. I denna kvalitativa studie undersöks hur Järfälla kommun, Sollentuna kommun samt Sundbybergs stad i Stockholmsregionen arbetar med ett ökat besökstryck på sina grönområden. Samtliga kommuner har olika förutsättningar men gemensamt är att alla har en förväntad befolkningsökning samt hög befolkningstäthet. Empirin har samlats in med hjälp av intervjuer med kommunala tjänstemän samt dokumentanalys av kommunernas översiktsplaner. Det teoretiska ramverket utgörs av tidigare forskning kring ekosystemtjänster i urban miljö samt social-ekologiska system. Resultatet visar att samtliga kommuner i någon form har förändrat sitt arbete till följd av det ökade besökstrycket och det beräknade ökade invånarantalet. Förvaltning, planering, samverkan, kunskap och värdering är viktigt för att skapa ett hållbart och resilient samhälle. 

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    fulltext
  • 23.
    Auffret, Alistair G.
    et al.
    Swedish University of Agricultural Sciences / Stockholm University.
    Kimberley, Adam
    Stockholm University.
    Plue, Jan
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap. Stockholm University.
    Waldén, Emelie
    Stockholm University.
    Super-regional land-use change and effects on the grassland specialist flora2018Inngår i: Nature Communications, E-ISSN 2041-1723, Vol. 9, artikkel-id 3464Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Habitat loss through land-use change is the most pressing threat to biodiversity worldwide. European semi-natural grasslands have suffered an ongoing decline since the early twentieth century, but we have limited knowledge of how grassland loss has affected biodiversity across large spatial scales. We quantify land-use change over 50-70 years across a 175,000 km(2) super-region in southern Sweden, identifying a widespread loss of open cover and a homogenisation of landscape structure, although these patterns vary considerably depending on the historical composition of the landscape. Analysing species inventories from 46,796 semi-natural grasslands, our results indicate that habitat loss and degradation have resulted in a decline in grassland specialist plant species. Local factors are the best predictors of specialist richness, but the historical landscape predicts present-day richness better than the contemporary landscape. This supports the widespread existence of time-lagged biodiversity responses, indicating that further species losses could occur in the future.

  • 24.
    Augustinsson Malmberg, Elliot
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Lagerhjelm, Charlotte
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Marina ekosystemtjänster för Hav i balans samt levande kust och skärgård: En kvalitativ analys av lokal förvaltning av Höga Kusten och Sankt Anna-Missjö2021Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Östersjön omfattas av en stor mångfald marina ekosystemtjänster som livnär närliggande samhällen. Deras funktion är hotad av en mängd terrestra och akvatiska aktiviteter som har förorenat havet, vilket kräver en långsiktig hållbar förvaltning. Syftet med denna uppsats är att bidra med kunskap om och förstå utmaningar och möjligheter i att uppnå en god ekologisk status i Östersjön. Studien baseras på en granskning av förvaltningsmetoder hos länsstyrelser och kommuner i två områden som är skyddade av den regionala överenskommelsen Helsingforskonventionen; Höga Kusten i Västernorrland och S:t Anna-Missjö i Östergötland. Till grund för det analytiska ramverket ligger Havs- och vattenmyndighetens rapport, som beskriver ekosystemtjänster som Östersjön bidrar med, samt även tjänsternas status, åtgärder och utmaningar som uppstår vid förvaltning. Resultatet baseras på kvalitativa metoder för att samla in data, genom att specifikt studera dokument samt intervjuer med lokala tjänstemän. Den insamlade empirin har blivit kategoriserad och analyserad i linje med Havs- och vattenmyndighetens rapport, därefter har innehållet diskuterats. Resultatet visar att mest fokus lades på hantering av övergödning, ohållbart fiske och reglering av föroreningar, samt deras trade-off- och synergieffekter som påverkar förvaltningen av just dessa ekosystemtjänster. Följaktligen, är det nödvändigt för tjänstemän att samverka med lokalbefolkningen för att uppnå en hållbar förvaltning av de skyddade områdena och deras ekosystemtjänster. Generella utmaningar ansågs vara tid, resurser och kunskap för förvaltning av marina miljöer. Dock genomsyrar myndighetens ramverk om ekosystemtjänster stora delar av länsstyrelserna och kommunernas arbete med marin förvaltning på Höga Kusten och S:t Anna-Missjö. Ekosystemtjänsternas status och funktioner är integrerade i länens och kommunernas förvaltningsmetoder av de skyddade områdena. Ekosystemtjänster som begrepp är däremot frånvarande och inte explicit nämnt i arbetet. 

    Fulltekst (pdf)
    fulltext
  • 25.
    Axelsson, Johanna
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Halvdansson, Linnea
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Hållbarhet i urbaniseringens tid: En jämförelse av Nackas och Huddinges stadsplanering2020Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    Urbanization is a global trend that is constantly increasing. In Sweden, there are similar patterns where both population and urbanization are expected to increase significantly in the future, wherein cities contribute to several environmental problems, but can also account for many of the solutions. Increasing globalization makes sustainable urban development an important and urgent issue, which Sweden emphasizes the importance of through the national environmental goal "A Good Built Environment". In the mission to create a sustainable urban environment, the local level and thus the municipalities constitute an important part. To study and compare how Nacka and Huddinge municipalities plan for and prioritize sustainable urban development in their comprehensive plans, a qualitative content analysis has been performed. The results of the content analysis have been analyzed through the framework “Sustainable urban planning development framework'' developed by AlQahtany et al. (2013), where this essay has used the framework's four dimensions (environment, social, economy, planning) to answer the problem statements. The results show that the two researched municipalities have an integrated environmental work where all dimensions of the framework are represented in both municipalities’ comprehensive plans, and almost all categories although the distribution of them was usually uneven. The planning dimension was most commonly represented, followed by the social dimension, the environmental dimension and the economic dimension in both municipalities. The main differences between the municipalities' planning were that Nacka municipality had a greater focus on the social dimension compared to Huddinge municipality which had a greater focus on all the other dimensions.

    Fulltekst (pdf)
    Hållbarhet i urbaniseringens tid
  • 26.
    Bachour, Raougina-Laouisa
    et al.
    Swedish University of Agricultural Sciences.
    Golovko, Oksana
    Swedish University of Agricultural Sciences.
    Kellner, Martin
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Pohl, Johannes
    Swedish University of Agricultural Sciences.
    Behavioral effects of citalopram, tramadol, and binary mixture in zebrafish (Danio rerio) larvae2020Inngår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 238, artikkel-id 124587Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Pharmaceuticals are emerging as environmentally problematic compounds. As they are often not appropriately removed by sewage treatment plants, pharmaceutical compounds end up in surface water environments worldwide at concentrations in the ng to μg L−1 range. There is a need to further explore single compound and mixture effects using e.g. in vivo test model systems. We have investigated, for the first time, behavioral effects in larval zebrafish (Danio rerio) exposed to a binary mixture of an antidepressant drug (citalopram) and a synthetic opioid (tramadol). Citalopram and tramadol have a similar mode of action (serotonin reuptake inhibition) and are known to produce drug-drug interactional effects resulting in serotonin syndrome (SS) in humans. Zebrafish embryo-larvae were exposed to citalopram, tramadol and 1:1 binary mixture from fertilization until 144 h post fertilization. No effects on heart rate, spontaneous tail coiling, or death/malformations were observed in any treatment at tested concentrations. Behavior (hypoactivity in dark periods) was on the other hand affected, with lowest observed effect concentrations (LOECs) of 373 μg L−1 for citalopram, 320 μg L−1 for tramadol, and 473 μg L−1 for the 1:1 mixture. Behavioral EC50 was calculated to be 471 μg L−1 for citalopram, 411 μg L−1 for tramadol, and 713 μg L−1 for the 1:1 mixture. The results of this study conclude that tramadol and citalopram produce hypoactivity in 144 hpf zebrafish larvae. Further, a 1:1 binary mixture of the two caused the same response, albeit at a higher concentration, possibly due to SS.

    Fulltekst (pdf)
    fulltext
  • 27.
    Backman, Agneta
    et al.
    Södertörns högskola, Institutionen för kemi, biologi, geografi och miljövetenskap. Karolinska Institutet.
    Jansson, Janet K
    Södertörns högskola, Institutionen för kemi, biologi, geografi och miljövetenskap. SLU.
    Degradation of 4-chlorophenol at low temperature and during extreme temperature fluctuations by Arthrobacter chlorophenolicus A62004Inngår i: Microbial Ecology, ISSN 0095-3628, E-ISSN 1432-184X, Vol. 48, nr 2, s. 246-253Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Low average temperatures and temperature fluctuations in temperate soils challenge the efficacy of microbial strains used for clean up of pollutants. In this study, we investigated the cold tolerance of Arthrobacter chlorophenolicus A6, a microorganism previously shown to degrade high concentrations of 4-chlorophenol at 28degreesC. Luciferase activity from a luc-tagged derivative of the strain (A6L) was used to monitor the metabolic status of the population during 4-chlorophenol degradation. The A6L strain could degrade 200-300 mug mL(-1) 4-chlorophenol in pure cultures incubated at 5degreesC, although rates of degradation, growth and the metabolic status of the cells were lower at 5degreesC compared to 28degreesC. When subjected to temperature fluctuations between 5 and 28degreesC, A6L continued to degrade 4-chlorophenol and remained active. In soil microcosm experiments, the degradation rates were significantly faster the first week at 28degreesC, compared to 5degreesC. However, this difference was no longer seen after 7 days, and equally low 4-chlorophenol concentrations were reached after 17 days at both temperatures. During 4-chlorophenol degradation in soil, CFU and luciferase activity values remained constant at both 5 and 28degreesC. However, once most of the 4-chlorophenol was degraded, both values decreased by 1-1.5 logarithmic values at 28degreesC, whereas they remained constant at 5degreesC, indicating a high survival of the cells at low temperatures. Because of the ability of A. chlorophenolicus A6 to degrade high concentrations of 4-chlorophenol at 5degreesC, together with its tolerance to temperature fluctuations and stress conditions found in soil, this strain is a promising candidate for bioaugmentation of chlorophenol-contaminated soil in temperate climates.

  • 28.
    Bali Swain, Ranjula
    et al.
    Södertörns högskola, Institutionen för samhällsvetenskaper, Nationalekonomi. Stockholm School of Economics, Sweden.
    Min, Yongyi
    United Nations Secretariat, USA.
    Interlinkages and interactions among the sustainable development goals2023Inngår i: Interlinkages between the Sustainable Development Goals / [ed] Ranjula Bali Swain; Yongyi Min, Cheltenham: Edward Elgar Publishing, 2023, s. 1-15Kapittel i bok, del av antologi (Annet vitenskapelig)
  • 29.
    Bali Swain, Ranjula
    et al.
    Södertörns högskola, Institutionen för samhällsvetenskaper, Nationalekonomi. Stockholm School of Economics, Sweden.
    Min, YongyiUnited Nations Secretariat, USA.
    Interlinkages between the sustainable development goals2023Collection/Antologi (Annet vitenskapelig)
    Abstract [en]

    Interlinkages between the Sustainable Development Goals explores the complex relationships between the 17 Sustainable Development Goals (SDGs) adopted by 193 United Nations Member States in 2015. The book provides an in-depth analysis of the interconnections between the economic, social, and environmental dimensions of sustainable development and the five pillars of the SDGs: peace, people, planet, prosperity, and partnerships. Covering a wide range of topics and themes, this timely book examines interlinkages at the thematic, regional, and country levels. Featuring case studies from across the globe, contributors explore the synergies and trade-offs among the SDGs using a variety of methodological approaches. Chapters also include examples of best practices and applications, demonstrating how interlinkages can be leveraged to achieve multiple SDGs simultaneously. This book will be an essential resource for a diverse range of audiences, including students and scholars in the areas of climate action, gender equality, industry, innovation, and infrastructure, and sustainable cities and communities. It will also be beneficial for policymakers, practitioners, researchers, and stakeholders in both the private and public sectors and civil society. 

  • 30.
    Bali Swain, Ranjula
    et al.
    Södertörns högskola, Institutionen för samhällsvetenskaper, Nationalekonomi. Stockholm School of Economics, Sweden.
    Min, Yongyi
    United Nations Secretariat, USA.
    Preface2023Inngår i: Interlinkages between the sustainable development goals / [ed] Ranjula Bali Swain; Yongyi Min, Cheltenham: Edward Elgar Publishing, 2023, s. xi-Kapittel i bok, del av antologi (Annet vitenskapelig)
  • 31.
    Bane, Jonas
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Bromarker Garcia, Ida
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Social hållbarhet i den cirkulära ekonomin: Förväntade skillnader mellan storstad och landsbygd i Sverige2021Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Den svenska strategin för att implementera en cirkulär ekonomi avser att stödja Agenda 2030 för hållbar utveckling. Dock kritiserar den akademiska litteraturen konceptet cirkulär ekonomi för bristande inkludering av social hållbarhet. Eftersom implementeringsåtgärder redan införs storskaligt både nationellt och i EU, har frågan lyfts om dess lämplighet i olika regionala kontext. Således ämnar denna studie att undersöka hur de aviserade åtgärderna för cirkulär ekonomi förväntas påverka social hållbarhet i svenska storstads- och landsbygdskommuner på olika sätt. En enkätundersökning utfördes till folkvalda politiker i 37 svenska kommuner. Resultaten visar att sociala hållbarhetsaspekter generellt inte förväntas påverkas nämnvärt i omställningen till cirkulär ekonomi. Detta kan förklaras med dess frånvaro i den politiska konceptualiseringen av cirkulär ekonomi. Vidare finner vi att landsbygdskommuner generellt är mer positiva till styrmedel för cirkulär ekonomi än storstadskommunerna. Vi avslutar med att föreslå att den svenska politiska tolkningen av cirkulär ekonomi skulle kunna justeras för att bidra till sociala hållbarhetsmål mer effektivt. 

    Fulltekst (pdf)
    fulltext
  • 32.
    Bathmann, Ulrich
    et al.
    Leibniz-Institute for Baltic Sea Research, Warnemünde, Germany.
    Schubert, Hendrik
    University of Rostock, Rostock, Germany.
    Andrén, Elinor
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Tuomi, Laura
    Finnish Meteorological Institute, Helsinki, Finland.
    Radziejewska, Teresa
    University of Szczecin, Szczecin, Poland.
    Kulinski, Karol
    Institute of Oceanology of the Polish Academy of Sciences, Sopot, Poland.
    Chubarenko, Irina
    Shirshov Institute of Oceanology of the Russian Academy of Sciences, Moscow, Russia.
    Editorial: Living Along Gradients: Past, Present, Future2020Inngår i: Frontiers in Marine Science, E-ISSN 2296-7745, Vol. 6, artikkel-id 801Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Baltic Sea is a geologically and evolutionarily young part of the coastal ocean that experienced, in its past, several severe environmental changes. In its present state, the Baltic Sea is characterized by both horizontal and vertical gradients of environmental conditions. As a huge estuary, it shows a west to east/south to north surface salinity gradient from 24 in Kattegat to nearly freshwater in the Bothnian Bay. The vertical salinity and oxygen gradients result in stratification which causes hypoxic and sulfidic anoxic conditions in deep basins. These gradient systems are impacted by natural and anthropogenic changes due to physico-chemical driving forces, varying over time and space. Gradient environments produce an imprint on both the structure and function of the biological systems and influence biogeochemical cycling. Besides, coastal seas in general and the Baltic Sea in particular, experience constant and direct influence from land with consequences to matter and energy cycles, biogeochemical interactions, energy fluxes, and sediment dynamics. “Living along gradients: past, present, future” in the Baltic are today’s very important aspects that rise questions like which of the effects we are detecting occur naturally, and which are driven by human activities. Deciphering past environmental changes and their causes provide keys to understand and simulate possible future scenarios, all of which should rise societal awareness and implementation of appropriate marine and coastal policies. Present-day knowledge on the dynamics of gradient systems, on the processes that affect the coastal sea environment, the results of interaction between coastal seas and society, the detection or reconstruction of past and present changes on time scales from inter-annual to millennial, and future change models are summarized here, with the idea to stimulate scientific exchange on most complex questions, addressing them from different perspectives.

  • 33.
    Bengtsson, Joel
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Sumak Kawsay and Clashing Ontologies in theEcuadorian Struggle towards De-coloniality: Progressive mobilization, romanticized constitutional reforms and local conceptions of Sumak Kawsay / Alli Kawsay in Ecuador2019Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    This thesis analyzes and problematizes the challenges and dilemmas associated with the implementation in practice of the indigenous conceptualization Sumak Kawsay/Buen-Vivir that originally is a conceptualization of a lifestyle in indigenous communities in Ecuador. The concepts were included in the new Constitution of Ecuador in 2008 that was ratified during progressive constitutional reforms under the former president Rafael Correa and with the support of the indigenous movement. Methodologically, by focusing on the implementation in practice, this ethnographic field study also examines Sumak Kawsay/Buen-Vivir as a conception of a lifestyle on local community level among indigenous peoples in two different regions of the country. More specifically, in the provinces of Imbabura in the northern Andean highlands and the Amazonian Pastaza. By applying a comparative approach, the research objective of this thesis is to study how these conceptions are perceived, interpreted and practiced on local community level and how similarities and differences are shaped by connotations of territoriality. The central findings of the study illustrate how many challenges and dilemmas linked to the implementation in practice of the values and visions of Sumak Kawsay/Buen-Vivir are grounded in the country’s continuous reliance on extracting natural resources as an important revenue to finance social welfare. Another central finding is that different socio-political, cultural and spatial factors contribute in shaping local perceptions, interpretations and how Sumak Kawsay/Buen-Vivir is practiced on local community level among indigenous peoples.

    Fulltekst (pdf)
    Joel_Bengtsson_MSc_Sumak Kawsay/Buen-Vivir
  • 34.
    Benulic, Kajsa-Stina
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    A Beef with Meat: Media and Audience Framings of Environmentally Unsustainable Production and Consumption2016Doktoravhandling, monografi (Annet vitenskapelig)
    Abstract [en]

    The aim of this thesis is to identify potential routes of participation in environmentally sustainable changes of the Swedish meat production and consumption. Changes are needed as meat production and consumption have been linked to serious environmental problems, such as climate change, biodiversity loss, and land use change. Scientists, international organizations, and Swedish government authorities have identified individual consumer responsibility as key in making that change happen. The public is to be informed and educated to make more environmentally sustainable choices as meat consumers, and become more supportive of policy instruments. This strategy, which mirrors the dominant approach to solving environmental problems, is suggested by government authorities despite their suspicion that media should have made most Swedes aware of the environmental impacts of meat.

    In this thesis potential participatory routes are identified through the analysis of Swedish news media and audience framings of meat production and consumption. Media framing is studied as an important source of information, and perhaps motivation, crucial in the individualized consumer responsibility approach. The media framing is studied through content analysis of mainstream and alternative radical newspapers. The audiences’ framing of meat may be influenced by media, but also by their everyday experiences, beliefs, values, and opinions. Focus group discussions with reception elements are the methods used for studying how audiences frame meat and use media in the process. The concept of participation is broadened to include passive and active forms to capture in which roles individuals consider to contribute to changing meat production and consumption. It is not self-evident that routes to change must include individual participation, since responsibility may be attributed to other actors, both by media and their audiences.

    The results imply only participatory route supported by media and audience framing. It is the one that mirrors the individualized consumer responsibility approach to solving environmental problems. The major barrier to the route is the audiences’ perceived inability to act. In an alternative route supported by both media and audience framing, state centered actors are made responsible for enforcing change. Here, the major barrier is the perceived unlikeliness of powerful actors assuming responsibility. Audiences construct no citizen roles for themselves to participate in. Neither does media, who only address audiences as consumers. Based on these findings it is suggested that the outlook for the individualized responsibility approach to making meat production and consumption environmentally sustainable is gloomy. At least if it the approach is to continuously rely on the information and motivation offered by media.

    Fulltekst (pdf)
    A Beef with Meat: Media and audience framings of environmentally unsustainable production and consumption
    Download (jpg)
    presentationsbild
  • 35. Berg, H
    et al.
    Francis, J
    Souter, Petra
    Södertörns högskola, Avdelning Naturvetenskap.
    Support to marine research for sustainable management of marine and coastal resources in the Western Indian Ocean2002Inngår i: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 31, nr 7-8, s. 597-601Artikkel i tidsskrift (Fagfellevurdert)
  • 36.
    Bergfeldt, Vendela
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Microbes that never sleep: A multidisciplinary study of the antibiotic resistance management in Sweden2016Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    The hypotheses of this study are that reduction and rational usage of antibiotics reduces development of antibiotic resistance. In Sweden, the trends do not follow this pattern. Despite a decrease in prescriptions of antibiotics, there is an increase in the number of patients infected with Methicillin-resistant Staphylococcus Aureus (MRSA), Extended Spectrum Beta-Lactamases (ESBL) and ESBL selecting for carbapenem-resistance (ESBLCARBA). This study aims to study factors affecting antibiotic resistance management. An additional aim is to use a multidisciplinary approach for a subject that has mostly been studied with quantitative methods. First, linear regressions investigated any possible significant changes of prescription rates in outpatient care, hospital usage of antibiotic groups and antibiotic resistance. After this, nine interviews were conducted with physicians in outpatient care, hospital care and with representatives from the Swedish Strategic Programme for the Rational Use of Antimicrobial Agents and Surveillance of Resistance (Strama), a network working for Swedish prevention against antibiotics resistance. There was a significant decrease in the number of prescriptions of antibiotics in outpatient care among all Swedish counties and a small, but significant increase of antibiotics used in hospitals. The number of patients infected with multidrug resistant bacteria also show a significant increase. The interviews revealed that health care workers in all counties follow the same guidelines and try to be as specific as possible in choosing antibiotics to hit specific bacteria. The respondents suggested migration and extended travelling as explanations to the growing number of cases of multidrug resistant bacteria. Further, two major factors emerged as important for an efficient antibiotic resistance management; Education/knowledge and Discussion. The results indicate a need for further research on rational usage of antibiotics and the use of broad-spectrum antibiotics in hospital care, rather than the reduction through prescriptions. The results indicate that rational usage has a bigger impact than reduction. Using a multidisciplinary approach gave a broader perspective on the issue and future studies should see the possibilities of mixing quantitative and qualitative studies.

    Fulltekst (pdf)
    fulltext
  • 37.
    Berini, Francesca
    et al.
    Politecnico di Milano and University of Insubria, Varese, Italy.
    Presti, Ilaria
    Politecnico di Milano and University of Insubria, Varese, Italy / Chemo Biosynthesis, Corana, Pavia, Italy.
    Beltrametti, Fabrizio
    Actygea, Gerenzano, Varese, Italy.
    Pedroli, Marco
    Vårum, Kjell M
    Norwegian University of Science and Technology, Trondheim, Norway.
    Pollegioni, Loredano
    Politecnico di Milano and University of Insubria, Varese, Italy.
    Sjöling, Sara
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Marinelli, Flavia
    Politecnico di Milano and University of Insubria, Varese, Italy.
    Production and characterization of a novel antifungal chitinase identified by functional screening of a suppressive-soil metagenome2017Inngår i: Microbial Cell Factories, E-ISSN 1475-2859, Vol. 16, nr 1, artikkel-id 16Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    BACKGROUND: Through functional screening of a fosmid library, generated from a phytopathogen-suppressive soil metagenome, the novel antifungal chitinase-named Chi18H8 and belonging to family 18 glycosyl hydrolases-was previously discovered. The initial extremely low yield of Chi18H8 recombinant production and purification from Escherichia coli cells (21 μg/g cell) limited its characterization, thus preventing further investigation on its biotechnological potential.

    RESULTS: We report on how we succeeded in producing hundreds of milligrams of pure and biologically active Chi18H8 by developing and scaling up to a high-yielding, 30 L bioreactor process, based on a novel method of mild solubilization of E. coli inclusion bodies in lactic acid aqueous solution, coupled with a single step purification by hydrophobic interaction chromatography. Chi18H8 was characterized as a Ca(2+)-dependent mesophilic chitobiosidase, active on chitin substrates at acidic pHs and possessing interesting features, such as solvent tolerance, long-term stability in acidic environment and antifungal activity against the phytopathogens Fusarium graminearum and Rhizoctonia solani. Additionally, Chi18H8 was found to operate according to a non-processive endomode of action on a water-soluble chitin-like substrate.

    CONCLUSIONS: Expression screening of a metagenomic library may allow access to the functional diversity of uncultivable microbiota and to the discovery of novel enzymes useful for biotechnological applications. A persisting bottleneck, however, is the lack of methods for large scale production of metagenome-sourced enzymes from genes of unknown origin in the commonly used microbial hosts. To our knowledge, this is the first report on a novel metagenome-sourced enzyme produced in hundreds-of-milligram amount by recovering the protein in the biologically active form from recombinant E. coli inclusion bodies.

  • 38.
    Berkevall, Catrine
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Cerna, Jessica
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Urbana ekosystemtjänster: En evidensbaserad genomgång av urbana ekosystemtjänster och implementering i Slakthusområdet2021Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    More than 3,5 billion people currently lives in cities, a number that is expected to increase further. The densification of cities makes it increasingly difficult for people to access natural areas, at the same time as biological diversity is threatened. In this study, we highlight the importance of urban ecosystem services through social and ecological aspects. This study presents a summary of different evidence-based solutions that contribute with urban ecosystem services. It moreover uses a case of urban development in Slakthusområdet (Meatpacking district), Stockholm, in order to describe contemporary processes that integrate solutions that contribute to urban ecosystem services. The results show that there are challenges in implementing these solutions with respect to political, economic, and market factors. The study thereby identifies how examining authorities and policy demands on a green factor tool enable ecosystem service solutions. By studying ecosystem services as part of a social-ecological system, this study ultimately contributes with knowledge on the execution of multifunctional solutions, which are becoming ever more important with the densification of cities around the globe.

    Fulltekst (pdf)
    fulltext
  • 39.
    Berkmann, Anna
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Greening Potentials and Limits of Eco-Labelling Schemes in the EU: A policy evaluation with a focus on small firms in the German coffee-processing sector2015Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    As SMEs transformation to sustainable practices in manufacturing, processing and services, is declared to be the key to a green growth model, the research in this thesis aims to understand in what way eco-labelling can be a part of that. In order to approach this complex issue, the thesis aims to identify the greening potential and the limits of contemporary eco-labelling schemes for SME product within the German coffee-processing sector. With regard to that, the thesis applied the policy evaluation method "Program Theory Evaluation" (PTE), which assesses a policy in place and thus provides information how the introduction and the function of eco-labelling schemes is observed and perceived by German coffee-processing SMEs (GCPS). Hence, based on a policy evaluation from a rational perspective, which has the focus on the policy’s problem-solving process and implementation cycle, the thesis reveals how eco-labelling schemes’ underlying theoretical greening strategy act in practice to German coffee-processing SME (GCPS). Thereby it could be evaluated that eco-labelling schemes imply shortcomings to address and green GCPS high quality coffee products. As the PTE-method aims also on optimizing the policy’s rationalisation, the inappropriate or failed implementation of eco-labelling schemes by GCPS has been further explored. To grasp the eco-labelling schemes extent of limits to green GCPS products, the thesis compares and analyses the policy evaluation results against the backdrop of eco-labelling schemes’ normative theoretical policy conception and in the light of "Environmental Authority of Political Consumerism (Ecological Modernisation Theory)". With regard to that, the thesis fosters a policy learning process and uncovers that eco-labelling scheme eco-labelling schemes potential to green GCPS products is limited and conditioned to this a lower level of sustainable value as they are focused to supply mainly the demand for mainstream coffee products. Hence, the thesis concludes that it is not the underlying rationality of eco-labelling schemes, namely being a consumer-oriented and market-based policy instrument that does not apply to green GCPS products. However, this opens up a new perspective as it points out a sustainable quality gap between products using eco-labelling schemes and non-labelled GCPS high quality products. In return this raises considerations in terms of improving eco-labelling schemes’ contribution to sustainable development. Thus the thesis argues to optimize their rationalization with regard to GCPS high quality products as frontrunners of tomorrow’s sustainability.

    Fulltekst (pdf)
    fulltext
  • 40.
    Bjärstig, Therese
    et al.
    Department of Political Science Umeå University, Sweden.
    Johansson, Johanna
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Mancheva, Irina
    Department of Political Science, Umeå University, Sweden.
    Sandström, Camilla
    Department of Political Science, Umeå University, Sweden.
    Collaboration as a policy instrument in public administration: Evidence from forest policy and governance2024Inngår i: Environmental Policy and Governance, ISSN 1756-932X, E-ISSN 1756-9338Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In recent decades, collaboration has become a common policy instrument in public administration, both internationally and in Sweden. Inspired by scholarly literature on collaborative governance, the aim of this study is to analyze the crucial role of public administration in the design and implementation of collaborative governance. Drawing on several years of research on Swedish forest policy and governance, our work is based on extensive empirical material, including 88 semi-structured interviews, observations, written comments from open public consultations and actors, enacted policy documents, open public hearings and a survey. Our results confirm that factors related to process design strongly affect the outputs and outcomes of collaboration in public administration. We assert that public officials should meticulously design and adapt the collaborative process during its initiation and progress, according to the policy problem and actors' incentives and motivations to participate. However, despite good intentions by public officials, the overarching priorities and contextual factors governing the policy area must be set by elected decision makers at an early stage to establish democratic accountability and high levels of policy legitimacy and acceptance. A major implication for public administration is that the increasing use of collaborative governance may be highly inefficient if it is difficult for participants to draft shared objectives and provide intended outputs because of low levels of trust, and different interpretations of knowledge and norms. Finally, in contentious policy areas, such as forest policy, political priorities must sometimes be set by elected decision makers rather than through collaborative processes.

  • 41.
    Björklund, Elin
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Jörnstedt, Lisa
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Konsumenters inställning till lokalproducerade livsmedel och svensk livsmedelsproduktion: samt vad det finns för utmaningar och möjligheter för verksamheter som erbjuder detta2022Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Behovet av att se över kopplingarna mellan livsmedelsförsörjningen, hållbarhet och suveränitet - vid tillhandahållandet av livsmedel - har ökat i och med en instabil och osäker omvärld. En ökad lokal och småskalig livsmedelsproduktion skulle på ett nationellt plan kunna göra livsmedelssystemet mer robust och resilient vid eventuella störningar. Denna studie avser att ge en bred bild av konsumenters attityd, engagemang, kunskap och beteende kring beredskapsfrågan, livsmedelssäkerhet samt konsumtion av lokalproducerade varor. Studien avser också undersöka Sveriges nationella ambitionsnivå för att främja utvecklingen av en hållbar, långsiktigt och konkurrenskraftig livsmedelskedja och på vilket sätt samhället bidrar eller kan bidra till att underlätta och stimulera den typen av näringsverksamhet. Resultatet visar att det råder en stark positiv attityd, medelhög kunskapsnivå, medelhögt engagemang samt starkt positivt beteende bland respondenterna. Resultatet visar även att inställningen till lokalproducerade livsmedel är positiv och att den framför allt kan härledas till känslan av samhörighet och värnandet om den lokala levande landsbygden. Gällande beredskapsfrågan så råder det bland respondenterna en tydlig koppling till småskalig och lokalproducerad livsmedelsproduktion såväl som till självförsörjning. Det föreligger dock stora hinder med småskaliga verksamheter i form av pris och tillgänglighet, både i form av utbud, öppettider och kommunikation. Det är idag mest resursstarka konsumentgrupper som köper lokalproducerat och det finns en risk för en ökande segregation i detta. Staten skulle kunna driva på för att få på plats en definition av lokalproducerade livsmedel samt arbeta med mjuka styrmedel såsom exempelvis miljömärkningar. De skulle också kunna höja taket för direkta upphandlingar inom ramen för EU-direktivet om offentlig upphandling så att kommunerna kan köpa in en större andel lokalproducerade livsmedel i sin offentliga upphandling. 

    Fulltekst (pdf)
    fulltext
  • 42.
    Björklund, Elin
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Segermark Viström, Oscar
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    The perceptions and experiences of urban dwellers, regarding the transition from an agrarian to an urban society: A qualitative interview study conducted in Urban Babati, Tanzania2023Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    This study investigates how farmers, authorities, day laborers and full-time employees experience and perceive the transition from an agrarian to a more urban society in Babati, Tanzania. It is an interview-based essay, and an inductive thematic analysis method has been used to analyze the perceptions and experiences about the transition, and to profoundly examine the main environmental, social, and economic benefits and challenges that follows.The results of the study show how the economic challenges govern the development compared to the social and environmental challenges, that are less prioritized in Babati. The results also show how urbanization was perceived as something good that increases prosperity and the number of social services. The society in Babati is still very connected and dependent on agriculture. Though the study explains possible future scenarios that indicates further rifts between the producer and the consumer in the food production as agriculture is being more rationalized, with the justification of primarily solving the situation regarding food security.

    Fulltekst (pdf)
    fulltext
  • 43.
    Björn, Johanna
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Halldén, Emelie
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    En fallstudie om implementeringen av hydroponiska stadsodlingar i urbana miljöer2022Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    The purpose of this paper is to investigate, based on a comparative study in Sweden, how vertical hydroponic farms can be implemented in urban environments and to identify the challenges with the implementation. The study examines various companies that work with hydroponic farms in Sweden and how the government can help the companies with the implementation of the innovation. Urban hydroponic farms can be a significant solution for solving the growing global population demand for locally grown fresh food, which includes good quality and nutrients. Previous studies, from a sustainability perspective, show that Sweden would benefit in several different ways if more hydroponic farms were implemented in the urban cities. The theory that the report is based on is the implementation theory. With this in mind, the empirics were analyzed from three different found themes; economy, political priorities & local involvement. Empirical data was collected from previous studies as well as from a qualitative methodological approach. This empirical study was based on multiple interviews with companies in the hydroponic farms industry located in Sweden and observations, to be able to analyze the findings based on our chosen theme. In this study we found that the result indicates that there are both advantages and obstacles to the implementation of hydroponic farms in urban areas. On the other hand, the benefits are predominantly from a sustainable development perspective with new innovative solutions, such as solar systems and upgraded district heating and district cooling systems.

    Fulltekst (pdf)
    fulltext
  • 44.
    Björnberg, Karin Edvardsson
    et al.
    KTH.
    Karlsson, Mikael
    KTH.
    Gilek, Michael
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Hansson, Sven Ove
    KTH.
    Climate and environmental science denial: A review of the scientific literature published in 1990–20152017Inngår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 167, s. 229-241Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Abstract Denial of scientific findings is neither a new nor an unexplored phenomenon. In the area of environmental science and policy though, the research on denial has not been systematically summarized and analyzed. This article reviews 161 scientific articles on environmental and climate science denial published in peer reviewed international journals in the last 25 years and aims to both identify research gaps and enable learning on the phenomenon. Such knowledge is needed for the increasingly important task to provide effective response to science denial, in order to put an end to its influence on environmental policy making. The review, which is based on articles found in the databases Web of Science, Scopus and Philosopher's Index, shows that denial by far is most studied in relation to climate change, with a focus on Anglo-American countries, where this form of denial is most common. Other environmental issues and other geographical areas have received much less scientific attention. While the actors behind climate science denial, their various motives and the characteristics of their operations have been thoroughly described, more comparative research between issues and countries is needed in order to draw reliable conclusions about the factors explaining the peculiarities of denial. This may in turn lay the ground for developing and actually testing the effectiveness and efficiency of strategies to counter environmental science denial. Irrespective of the ambitions of environmental goals, science-based policies are always preferable. The scientific community therefore needs to increase its efforts to dismantle false claims and to disclose the schemes of denialists.

  • 45.
    Blankestijn, Wouter
    et al.
    SLU.
    Martin, Anna
    SLU.
    Whanganui, Nya Zeeland: Att göra flodernas röster hörda2019Inngår i: Biodiverse, ISSN 1401-5064, Vol. 24, nr 1, s. 2s. 14-15Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 46.
    Blankestijn, Wouter
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap. Södertörns högskola, Centrum för Östersjö- och Östeuropaforskning (CBEES), Baltic & East European Graduate School (BEEGS).
    Martin, Anna
    SLU.
    Naunova, Kristina
    Uppsala University.
    von Essen, Erica
    The Norwegian Institute for Nature Research (NINA), Trondheim, Norway.
    Strategic Rights vs ‘Naturally’ Emerging Relations: An Interdisciplinary Examination of the Rights of Nature Movement2020Konferansepaper (Annet vitenskapelig)
  • 47.
    Blomquist, Emma
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik.
    Revitalising urban public green space: Exploring lived experiences of teenage girls in socio-economically challenged neighbourhoods in Stockholm,Sweden, using Google Maps2021Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    Urban public green space is a core contributor to cultural ecosystem services in cities, comprising the non-material benefits that people obtain from contact with nature. Due to the many benefits that have been ascribed to it, green space has become subject to debates on justice about its fair distribution and equal opportunities to use it. Teenage girls living in socio-economically challenged neighbourhoods appear to belong to a societal group that is restricted in accessing green space, as well as having less opportunities to influence the governance of such space. Attempting to bring further light to these issues, this study utilises a phenomenological approach in which intersectionality theory is central. It aims to explore how intersections of identity markers, such as age, gender, and place of residence, interact with girls’ lived experiences of green space. It does so by collecting first-person narratives in eight interactive and online interviews with the support of satellite, aerial and street view imagery provided by Google Maps. The result shows the great complexity of urban public green space as a place with room for both feelings of liberty and feelings of exclusion. The girls’ narratives unveil how urban green is an important source for well-being and quality of life, and how connection with nature enables connection with loved ones, the community, and with oneself. Simultaneously, identity markers, such as age, gender, and place of residence, intersect into a synergy of exclusion for teenage girls to fully encounter urban nature. Feelings of urban public green space as a place occupied by others contribute to experiences of it as inappropriate and unsafe for girls to visit in certain places during certain times. This suggests how green space works as an arena for power relations, where the opportunities for girls to benefit from its free use and from cultural ecosystem services decrease under certain circumstances. Narratives and myths that green space is dangerous for girls paint a geography of fear; in which fear of becoming a victim of crime is expressed as a fear of space. This fear increases with preconceptions and self-images that girls are defenceless and weak. Furthermore, these experiences intersect with feelings that their neighbourhoods, and the green wherein, are framed adversely and neglected by planners, politicians, municipalities and the government. Still, the girls express great appreciation and pride over the voluminous public green areas in their neighbourhoods. Despite experiencing less power to influence, they have strong visions and aspirations to impact the design and function of urban nature, which indicates prospects for empowerment and revitalisation of green space. It is concluded that recognising lived experiences of girls is essential when working towards safe and accessible, but also lively and inviting, green space. Furthermore, it is argued that insights from intersectionality is valuable when researching use of green space, as intersectionality is a profoundly spatial concept; in which social categories articulate in relation to place and time, and where power and identity contribute at shaping experiences of green space.

    Fulltekst (pdf)
    Blomquist, Emma - Revitalising urban public green space
  • 48.
    Bolinder, K.
    et al.
    Stockholm University.
    Norbäck Ivarsson, Lena
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Humphreys, A. M.
    Stockholm University / Imperial College London, UK.
    Ickert-Bond, S. M.
    University of Alaska Fairbanks, Fairbanks, AK, USA / Arizona State University, Tempe, AZ, USA.
    Han, F.
    China University of Geosciences, Wuhan, China.
    Hoorn, C.
    University of Amsterdam, Amsterdam, The Netherlands.
    Rydin, C.
    Stockholm University.
    Pollen morphology of Ephedra (Gnetales) and its evolutionary implications2016Inngår i: Grana, ISSN 0017-3134, E-ISSN 1651-2049, Vol. 55, nr 1, s. 24-51Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Ephedra lineage can be traced at least to the Early Cretaceous. Its characteristically polyplicate pollen is well-represented in the fossil record and is frequently used as an indicator of paleoclimate. However, despite previous efforts, knowledge about variation and evolution of ephedroid pollen traits is poor. Here, we document pollen morphology of nearly all extant species of Ephedra, using a combination of scanning electron microscopy (SEM) and light microscopy (LM), and reconstruct ancestral states of key pollen traits. Our results indicate that the ancestral Ephedra pollen type has numerous plicae interspaced by unbranched pseudosulci, while the derived pollen type has branched pseudosulci and (generally) fewer plicae. The derived type is inferred to have evolved independently twice, once along the North American stem branch and once along the Asian stem branch. Pollen of the ancestral type is common in Mesozoic fossil records, especially from the Early Cretaceous, but it is less commonly reported from the Cenozoic. The earliest documentation of the derived pollen type is from the latest Cretaceous, after which it increases strongly in abundance during the Paleogene. The results of the present study have implications for the age of crown group Ephedra as well as for understanding evolution of pollination syndromes in the genus.

  • 49.
    Bonca, Sandra
    et al.
    University of Ljubljana, Ljubljana, Slovenia.
    Udovc, Andrej
    University of Ljubljana, Ljubljana, Slovenia.
    Rodela, Romina
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    A social marketing perspective on road freight transportation of fresh fruits and vegetables: a Slovene case2017Inngår i: Ekonomska Istrazivanja, ISSN 1331-677X, E-ISSN 1848-9664, Vol. 30, nr 1, s. 1132-1151Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    With the large increase in transportation over the last decades and the associated negative impacts upon the environment and society, a more sustainable use of transport is a crucial policy issue. This analysis focuses on road freight transport of selected produce (carrots, cabbage, apples and pears) with the aim to appraise the sustainability of road freight transport of these for the Slovene market. To this end, we take into account self-sufficiency, import and export features, transport needs, produce origin and prices differences between domestic and non-domestic produce. The method used for obtaining transported quantities, exported from and imported to the county, was material flow accounts (MFA). Then we undertook an analysis of sustainability of road transport of produce where we considered the country's transport needs. The study finds that road freight transport for selected produce is not sustainable. Recognising the normative dimensions of sustainability, the role of social marketing in this context is explored and suggestions on how to promote more sustainable transport solutions advanced.

  • 50.
    Bonow, Madeleine
    et al.
    Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
    Cios, Stanislaw
    Ministry of Foreign Affairs, Warsaw, Poland.
    Svanberg, Ingvar
    Uppsala universitet.
    Fishponds in teh Baltic States: Historical Cyprinid Culture in Estonia, Latvia and Lithuania2016Inngår i: Historical Aquaculture in Northern Europe / [ed] M. Bonow; H. Olsén; I. Svanberg, Huddinge: Södertörns högskola, 2016, s. 139-156Kapittel i bok, del av antologi (Fagfellevurdert)
    Fulltekst (pdf)
    fulltext
1234567 1 - 50 of 498
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