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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Transitioning towards Sustainable Agriculture in the European Union through Change Management and Transformational Leadership

García Sánchez, Miguel, Warnshuis, Maarten January 2021 (has links)
This paper examined how Change Management and Transformational Leadership can be effective tools in transitioning towards sustainable agriculture in Europe. This paper starts with providing empirical evidence for climate change and shows that Northern and Southern Europe are impacted differently by climate change. Then this paper examined how climate change affects farmers in the different parts of Europe and what Societal, Environmental, Leadership and Organisational changes have to be made to transition towards sustainable agriculture in Europe. The qualitative analysis shows that, according to farmer associations, there is a need for a variety of options, a lack of communication and insufficient involvement of farmers on a policy making level. This paper ends with explaining how Change Management and Transformational Leadership can be used as tools to improve communication between stakeholders and improve the involvement of farmers in the co-creation process. Therefore, this paper concludes that Change Management and Transformational leadership will help the European Union in realising sustainable agriculture in Europe.
42

Quantification of carbon emissions and removals from land, plants, and products : A case study of cotton used in IKEA'sproducts

Xie, Ting January 2021 (has links)
The method framework for quantifying the carbon emissions and removals from land, plants and products for cotton is developed in this study, which is feasible for most cotton supply chains. Collected defaults and suggested sources for required data inputs are provided. Current data gaps are defined, including the knowledge gap found in the storage time of cotton in the product pool, which requires further investigation in the future. Based on the quantification results of IKEA's case in 2019, there is a net 2.9 kg carbon stock increase per kg purchased cotton on average, equivalently offsetting 10.2% of global warming potential caused by cotton lint production emissions. Analysis results indicate that land-based carbon removals can be a cost-effective approach to achieve climate mitigation for cotton corporations. The amount of removed carbon can be greatly improved by avoiding emissions from land use change, adopting a higher level of conservation tillage to improve mineral soil carbon sequestration, and increasing carbon storage time in products to enlarge the climate benefit of cotton products carbon removals. Based on case study results, the carbon removals potential of global cotton production is estimated to be 5.4 Mt CO2-eq in 2019 and projected to reach 6.2 Mt CO2-eq in2029, which can mitigate over 0.01% of the GWP caused by the total worldwide anthropogenic emissions. Though this climate mitigation is relatively small, it breaks out the general cognition of agriculture carbon removals and provides us preliminary insight into cotton carbon sequestration capability and its potential.
43

Wildfire Hazard Mapping using GIS-MCDA and Frequency Ratio Models : A Case Study in Eight Counties of Norway

Zeleke, Walelegn Mengist January 2019 (has links)
Abstract A wildfire is an uncontrollable fire in an area of combustible fuel that occurs in the wild or countryside area. Wildfires are becoming a deadly and frequent event in Europe due to extreme weather conditions. In 2018, wildfires profoundly affected Sweden, Finland, and Norway, which were not big news before. In Norway, although there is well–organized fire detection, warning, and mitigation systems, mapping wildfire risk areas before the fire occurrence with georeferenced spatial information, are not yet well-practiced. At this moment, there are freely available remotely sensed spatial data and there is a good possibility that analysing wildfire hazard areas with geographical information systems together with multicriteria decision analysis (GIS–MCDA) and frequency ratio models in advance so that subsequent wildfire warning, mitigation, organizational and post resilience activities and preparations can be better planned.  This project covers eight counties of Norway: Oslo, Akershus, Østfold, Vestfold, Telemark, Buskerud, Oppland, and Hedmark. These are the counties with the highest wildfire frequency for the last ten years in Norway. In this study, GIS-MCDA integrated with analytic hierarchy process (AHP), and frequency ratio models (FR) were used with selected sixteen–factor criteria based on their relative importance to wildfire ignition, fuel load, and other related characteristics. The produced factor maps were grouped under four main clusters (K): land use (K1), climate (K2), socioeconomic (K3), and topography (K4) for further analysis. The final map was classified into no hazard, low, medium, and high hazard level rates. The comparison result showed that the frequency ratio model with MODIS satellite data had a prediction rate with 72% efficiency, followed by the same model with VIIRS data and 70% efficiency. The GIS-MCDA model result showed 67% efficiency with both MODIS and VIIRS data. Those results were interpreted in accordance with Yesilnacar’s classifications such as the frequency ratio model with MODIS data was considered a good predictor, whereas the GIS-MCDA model was an average predictor. When testing the model on the dependent data set, the frequency ratio model showed 72% with MODIS & VIIRS data, and the GIS-MCDA model showed 67% and 68% performance with MODIS and VIIRS data, respectively. In the hazard maps produced, the frequency ratio models for both MODIS and VIIRS showed that Hedmark and Akershus counties had the largest areas with the highest susceptibility to wildfires, while the GIS-MCDA method resulted to Østfold and Vestfold counties. Through this study, the best independent wildfire predictor criteria were selected from the highest to the lowest of importance; wildfire constraint and criteria maps were produced; wildfire hazard maps with high-resolution georeferenced data using three models were produced and compared; and the best, reliable, robust, and applicable model alternative was selected and recommended. Therefore, the aims and specific objectives of this study should be considered and fulfilled.
44

Socio-Ecological Resilience: ‘Weaving’ to scale Nature-based Solutions

Hussain, Sally, Carolina, Obara, Seefeld, Leon, Tjoelker, Tijn January 2022 (has links)
The sustainability challenge is a complex interplay of interconnected challenges that requires an integrated and systemic approach. Nature-based Solutions (NbS) are seen as a key tool for addressing such challenges but are currently not mainstreaming and scaling to the landscape level. The emerging leadership practice of Weaving is believed to help cohere fragmented change-making efforts and increase the adaptive capacity and resilience of socio-ecological systems. However, scientific research on NbS and Weaving is scarce and studies on their intersection are non-existent.  To investigate how Weaving practices could foster the conditions for scaling NbS to the landscape level, rapid literature reviews and semi-structured interviews were conducted with academic experts, Weaving practitioners, and grass-root entrepreneurs. On this basis, two conceptual frameworks were iteratively developed that serve as a basis for two practical toolkits. They comprise (1) seven barriers and nine enablers for scaling NbS to the landscape level and (2) a Weaving working definition and five core Weaving practices.  There are indications that Weaving practices have the potential to address several of the barriers and enablers for scaling NbS if approached with a systematic lens. Ultimately, interconnected challenges, such as barriers and enablers to scaling NbS, require interwoven approaches as provided by Weaving.
45

Reconnecting to Food: Can Sámi Indigenous Ontology help guide Sweden to a Sustainable Food System?

Kastner, Livia Lara January 2024 (has links)
Sustainable food systems are a crucial objective in the 2030 agenda as food security is under threat in large parts of the world, either currently or in the near future. Food systems connect many of the timely challenges the world faces today, touching upon various dimensions. This multidimensional character causes the search for adequate solutions to span a broad interdisciplinary field and to direct research towards new modes of knowledge, such as those carried by Indigenous peoples' traditional cultures and beliefs. Indigenous people’s food systems are considered to offer valuable insights into sustainable food practices and improve the understanding of the connection between nature and humans. In Sweden, the National Food Strategy is the guiding framework that aims for a transformation to a sustainable food system in line with the objectives of the 2030 agenda. The need for knowledge generation is recognised but refers to new and mainstream objectivist modes. Sámi Indigenous perspectives as a potential source are not recognised. Therefore, the aim of this thesis is to identify potential learnings from Sámi Indigenous perspectives to strengthen the Swedish idea of a sustainable food system. To reveal learnings, a policy analysis is carried out guided by Indigenous methodology. The analysis is rooted in two core documents, namely the Sámi environmental framework (Eallinbiras) and the Swedish National Food Strategy. Commonalities and differences between Sámi perspectives and Swedish food policy are identified and discussed. Additionally, in line with Indigenous methodology, two consultations with local Sámi experts were carried out to seek guidance on the interpretations and findings of the results. Overall, it is concluded that there are various touching points where Sámi ontology could facilitate a strengthening of the food strategy and help realise the desired goals. Mainly, such involvement could steer approaches from a regulatory- to a relationship-oriented character, facilitate a deepened holistic perspective, and assign greater value to the environment, resulting in improved resilience. To realise an integration of Sámi perspectives into Swedish food strategy requires respect and the safeguarding of Indigenous rights. Certainly, many political, ontological and epistemic challenges present themselves for such an endeavour. However, some interests appear to be shared, and the potential for valuable learning is found to exist. Further research is needed to derive more concrete, practical implications and carry out participatory models to realise an integration of Sámi ontology to strengthen Swedish food policy.
46

Assessing the adaptive capacity of Sweden's environmental governance

Tomas, Cusicanqui January 2016 (has links)
Different challenges arising from increasingly uncertain and unpredictable environmental and economicconditions have been shifting the focus of public governance and socio-economic development. Morerecently, empirical studies have demonstrated a transitional epoch in which humanity is currently in: TheAnthropocene, as well as its harmful effects that degrade the biosphere, and thus our economic, political,social well-being. The casual dynamics of climate change and its impacts on life-supporting ecosystemshas increasingly been recognized by a resilient approach which incorporates adaptive processes andschemes, allowing public governance to embrace the changes rather than control uncertainty. Thisresearch introduces the interwoven concepts of adaptive capacity, adaptive governance, and resiliencewithin a social and environmental framework. It provides a review of how these concepts support aparadigm shift to mitigating current and future challenges—understood through a multidisciplinaryapproach, and how scholars have sought to develop a blueprint to improve the need to foster and mobilizeadaptive capacity within the governance of the commons. In Sweden, key governmental and businessleaders have shown the ability to foster environmental governance that is capable of developing analternative form of planning, implementing, and managing public policy. Moreover, Sweden’s concertedmultilevel governance and public policy efforts have promoted an all-encompassing generational, mainlythrough: coordinated environmental policies and private, public, and civil society partnerships. Theseinitiatives have led to innovative technologies and projects (e.g. urban vertical farming technology) as wellas cross collaboration and integration of companies and industries in order to achieve economic, social,and environmentally symbiosis.
47

Naturvanor under en pågående pandemi / Nature habits during an ongoing pandemic

Vitestam, Moa, Rask Olsson, Matilda January 2020 (has links)
Covid-19-viruset upptäcktes i Kina i slutet av 2019. Viruset spred sig snabbt och i mars 2020 klassades Covid-19 som en pandemi. Media har sedan dess rapporterat dagligen om utvecklingen av pandemin. Ett ämne som det även rapporterats om är det ökade naturintresset under pandemin. Flertalet naturområden har vittnat om ökat besöksantal, nedskräpning och slitage på naturen. Tidigare studier visar att slitage på naturen främst beror på bristande kunskap om allemansrätten. Syftet med uppsatsen är att undersöka om det finns samband mellan pandemin och det ökade naturintresset. För att undersöka detta spreds en digital enkätundersökning riktad till myndiga invånare i Kristianstad kommun. Enkäten innehöll frågor om invånarnas naturvanor både innan och under pandemin. Ett statistiskt test av resultatet bekräftade att myndiga invånare i Kristianstad kommun är ute oftare i naturen under pandemin än innan. Trettio procent av deltagarna svarade att deras naturvanor har förändrats under pandemin och flertalet menar att deras förändrade naturvanor lett till mer tid i naturen. Den vanligaste aktiviteten är promenad och den populäraste platsen för besök i naturen är sitt omedelbara närområde. För att undvika bestående skada på naturen av de förändrade naturvanorna kan ökad kunskap om allemansrätten vara en del av lösningen. / The Covid-19 virus was discovered in China in late 2019. The virus spread rapidly, and in March 2020, Covid-19 was classified as a pandemic. The media has since reported daily on the development of pandemic. One topic that also has been reported about is the increased interest in nature during the pandemic. Many nature areas have witnessed increased visitor numbers, littering, and wear on nature. Previous studies show that wear on nature is mainly due to a lack of knowledge about allemansrätten (the right of public access). The thesis aims to investigate whether there is a connection between the pandemic and the increased interest in nature.  A digital survey was distributed to adult residents in Kristianstad municipality to investigate this potential relationship. The survey included questions about the inhabitants' nature habits both before and during the pandemic. A statistical test of the result confirmed that adult residents of Kristianstad county are out in nature more often during the pandemic than before. Thirty percent of the participants answered that their nature habits have changed during the pandemic, and the majority believe that their changed nature habits have led to more time in nature. The most common activity is walking, and the most popular place to visit nature is its immediate local area. To avoid permanent damage to nature from the changed nature habits, increased knowledge of allemansrätten can be a part of the solution.
48

Empowering Smallholder Farmers to Achieve Food Sovereignty Through Soil-Less Agriculture

Balasubramanya, Abhijith Nag, Shaafiu, Fathimath Zainy January 2022 (has links)
This study explores the question of how soil-less agriculture through hydroponics, aeroponics, and aquaponics can empower smallholder farmers to achieve food sovereignty as portrayed in documentaries. It addresses the power imbalance between large corporations and smallholder farmers in the traditional agriculture industry. Documentary research approach is used to understand the various applications and research aspects of soil-less agriculture from around the world. Real-life examples from different countries where these methods have been successfully implemented in the agriculture industry, ranging from large industrial settings to smallholder farmers in disadvantaged communities, are analyzed. Further, content analysis is done on these documents by constructing a matrix that combines the process of empowerment and the six pillars of food sovereignty to analyze the different forms of empowerment. The study also investigates how the use of soil-less agriculture can build capabilities through enhanced “well-being freedom” and “agency freedom” and empower smallholder farmers to achieve food sovereignty.
49

Arable Plant Diversity on Gotland, Sweden

Örnberg, Rebecca January 2023 (has links)
Arable plant species diversity has been on a decline, with many species dependent on arable land becoming threatened. At the same time, attempts at defining the drivers of arable plant diversity have proven difficult and results are often contradictory. Much of the available data come from surveys that are small-scale and with great variability in methodology, leading to difficulties comparing them. In this study, I have used survey data from Gotland to examine how arable plant diversity is influenced by management, field size, soil texture and standing crop. I found a negative trend of diversity with increasing field size, and a suggested effect of management and soil texture on the presence of red listed arable plants. This study also evaluates the use of small datasets when examining plant diversity, and the limitations associated with it. It shows that while a small dataset cannot be analysed to the extent a more comprehensive one can, it is possible to identify trends and patterns with it, which may inform further studies.
50

Environmental factors affecting European spruce bark beetle (Ips typographus) outbreaks in Sweden : Linking AI-detected dead spruce, soil moisture, nature protection and bark beetle outbreak (Ips typographus) in Sweden / Miljöfaktorer som påverkar utbrott av granbarkborre (Ips typographus) i Sverige : Sammankoppla AI-detekterade döda granar, markfuktighet, naturvård och granbarkborreutbrott (Ips typographus) i Sverige

Hessle, Petter January 2023 (has links)
Norway spruce (Picea abies) is a vital tree species in Sweden's extensive forested landscape. However, the planting of spruce beyond its natural range has made it vulnerable to pests like the spruce bark beetle (Ips typographus), which has caused substantial damage to Swedish forests. With the effects of global warming and climate change becoming increasingly apparent, understanding the factors influencing spruce mortality is crucial for effective forest management. This study aimed to investigate the impact of soil moisture and tree size on the susceptibility of Norway spruce to spruce bark beetle attacks. Using a combination of an Artificial Intelligence (AI) program detecting dead spruce trees and soil moisture data from the Swedish University of Agricultural Sciences (SLU), areas in Stockholm County with dead spruce trees were identified. Spatial analysis using Geographic Information System (GIS) tools and a field survey were conducted to evaluate the hypotheses: H1: Spruce mortality will be higher in areas occurring within mesic soil moisture class (1) than within mesic-moist soil moisture class (2) and moist-wet soil moisture class (3). H2: Large diameter spruce trees will have a higher mortality rate from spruce bark beetle than smaller diameter trees. H3: Spruce mortality will be higher in areas located inside nature reserves. The results confirmed that spruce mortality was higher in areas with dryer soil, Additionally, larger diameter spruce trees exhibited higher mortality rates from spruce bark beetle attacks than smaller trees. Contrary to the initial hypothesis, the study did not find a higher spruce mortality rate in areas located outside nature reserves. The conclusion of this study is that both tree size and soil moisture affect the Norway spruce’s ability to defend itself from spruce bark beetle attacks, but it does not confirm that spruce trees inside nature reserves have a greater mortality rate due to bark beetle attacks than the surrounding areas. The study has contributed to a better understanding of how spruce bark beetles choose trees. It has also provided more knowledge and validation of the Swedish Forest Agency AI program, which is trained to find dead spruce trees. The fact that this is a working tool opens a lot of possibilities for further use. The knowledge of soil moisture’s effect on spruce survival will also help forest managers make better choices when selecting areas for planting spruce. This will also benefit both the forest owners economically and help suppress the spread of spruce bark beetle. / Gran (Picea abies) är en viktig trädart i Sveriges omfattande skogslandskap. Dock har plantering av gran utanför dess naturliga utbredningsområde gjort den sårbar för skadedjur så som Granbarkborre (Ips typographus), vilket har orsakat betydande skador på svenska skogar. Med effekterna av klimatförändringar är det alltmer viktigt att förstå vilka faktorer som påverkar granens sårbarhet mot granbarkborren för en effektiv skogsförvaltning. Denna studie syftade till att undersöka påverkan av markfuktighet och trädstorlek. Genom att använda en kombination av ett artificiellt intelligensprogram (AI) som identifierar döda granar och markfuktighetsdata från Sveriges lantbruksuniversitet (SLU), identifierades områden i Stockholms län där det fanns döda granar. En spatial analys med hjälp av geografiska informationssystem (GIS) och en fältundersökning genomfördes för att utvärdera hypoteserna: H1: Granens dödlighet kommer att vara högre i områden med torr-frisk mark (1) jämfört med områden med frisk-fuktig markfuktighet (2) och fuktig-våt markfuktighet (3). H2: Granar med större diameter kommer att ha en högre dödlighetsgrad från granbarkborrsangrepp än granar med mindre diameter. H3: Granens dödlighet kommer att vara högre i områden i naturreservat än utanför. Resultaten bekräftade att granens dödlighet var högre i torrare områden. Dessutom uppvisade granar med större diameter högre dödlighetsgrad från garnbarkborreangrepp än mindre träd. Resultatet kunde inte bekräfta hypotes H3, man fann inte en högre dödlighetsgrad hos gran i områden inom naturreservat. Slutsatsen av denna studie är att både trädstorlek och markfuktighet påverkar granens förmåga att försvara sig mot granbarkborreangrepp, men den bekräftar inte att naturreservat har en påverkan på granens dödlighet till följd av granbarkborreangrepp än omgivande områden. Studien har bidragit till en bättre förståelse för hur granbarkborren väljer granar. Den har också tillfört mer kunskap och bekräftat att Skogsstyrelsens AI-program hittar döda granar. Att AI-programmet är ett fungerande verktyg öppnar upp många möjligheter för framtida användningsområden. Kunskapen om markfuktighetens effekt på granens överlevnad kommer också att kunna hjälpa skogsförvaltare att fatta bättre beslut vid val av områden för plantering av gran. Detta kommer att gynna både skogsägarna ekonomiskt och bidra till att minska antalet granbarkborreangrepp.

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