Les organismes font face à des compromis entre leur reproduction, leur maintenance et leur survie, dont découlent des stratégies adaptatives énergétiques, comportementales et écologiques.Ce travail de thèse propose de préciser les stratégies de reproduction chez la tortue luth Dermochelys coriacea nidifiant en Guyane. Nous avons étudié les caractéristiques maternelles, les performances de reproduction et les potentiels liens existants entre la migration et la reproduction chez une population d’individus d’identité connue, suivis grâce à un suivi longitudinal original combinant biométrie, physiologie et biologie moléculaire.Premièrement nous montrons que les tortues luth opèrent comme des reproducteurs sur capital, i.e., leur reproduction repose sur les ressources stockées sous forme de réserves corporelles pendant la migration précédant la saison de ponte. D’autre part, nous suggérons que les femelles ajustent la durée de leur migration en fonction des conditions océanographiques rencontrées pendant la migration. Ceci leur permettrait, à l’échelle de la vie, de répondre au compromis entre la reproduction en cours et les reproductions futures. Enfin, notre démarche souligne l’importance de prendre en compte les caractéristiques individuelles dans la compréhension des stratégies de reproduction, et de manière ultime pour l’établissement de modèles réalistes de la dynamique des populations, notamment dans le cas d’espèces emblématiques telles que les tortues marines. / Organisms face trade-offs between their reproduction, maintenance and survival, from which result adaptative strategies at the energetics, behavioural and ecological levels.This PhD work investigates the reproductive strategies used by leatherback turtles, Dermochelys coriacea, nesting in French Guiana. We investigated maternal characteristics, reproductive output, and the possible links between migration and reproduction in a population of known identity, studied through a unique longitudinal monitoring, based on complementary approaches combining biometry, physiology and molecular biology.First, we found that leatherback turtles are capital breeders, i.e. females’ reproductive output displayed during their nesting season relies on body reserves previously stored during their migration. Second, we suggested that leatherback females adjust the duration of the migration according to the oceanographic conditions they experienced during migration. At a lifetime scale, this may allow females to face the trade-off between current and future reproductions. Finally, our approach highlights the importance to take into account individual characteristics in order to better understand reproductive strategies, and further assess realistic models of population dynamics, particularly when considering emblematic species such as sea turtles.

Toute procrastination à lutter contre le changement climatique aura pour conséquence une augmentation croissante des coûts à l'avenir (voir par exemple Stern, 2006). Le manque de changement dans le comportement des individus, indépendamment de l'investissement dans les technologies de réduction des émissions, pourrait entraîner des coûts exorbitants. Ces derniers sont déjà aujourd'hui très élevés en raison du faible nombre d’options disponibles pour réduire les émissions (Abrell, 2007; Bottrill, 2006; Proost, 2008; SDC, 2005). Par conséquent, des efforts sont nécessaires pour introduire des mesures politiques efficaces le plus rapidement possible. Bien que cette question concerne de nombreux secteurs de l’économie, cette thèse se concentre sur le secteur des transports car il s’agit de l'un des plus grands émetteurs de CO2 (CE, 2012). C’est également un secteur, qui se caractérise par des coûts de dépollution élevés. Cela signifie que tout progrès vers une technologie moins carbonée sera coûteuse et prendra du temps (Kesicki, 2012).Ostrom et al. (2012) signalent qu’une solution peut être trouvée en établissant et en appliquant des limites sur les ressources communes. De nombreuses études ont été entreprises à ce sujet (voir par exemple Dudley, 1993; Hackett et al., 1994; Kramer et al, 1986;. Randall, 1975, 1978;. Walker et al, 1991, 1992). Cependant, ce dernier n'a pas encore été épuisé. Au contraire, de nouveaux instruments de politique soulèvent de nouvelles discussions et suscitent le besoin pour de nouvelles recherches. Les « Personal Carbon Allowances » (PCA), aussi dénommés en français par le terme « permis d’émission », sont un de ces instruments. Le PCA est un instrument de politique publique de plafonnement et d’échange (« cap-and-trade ») dans lequel les droits d’émissions de carbone sont attribués à des individus. D'un point de vue néoclassique, les permis d'émission constituent un instrument de politique efficace et efficient dans la lutte contre la pollution (Weitzman, 1974; Montgomery, 1972). Ils entraînent une augmentation des prix qui couvre le montant exact des émissions produites par un individu. Toutefois, des éléments socio-psychologiques compliquent le problème. Cette thèse tente d’apporter un éclaircissement sur la manière dont l'économie comportementale pourrait être utilisée pour lutter contre la pollution de l'environnement du transport personnel. Elle fait des propositions concernant la mise en place des PCA et comment ces derniers pourraient influencer les choix personnels de déplacement. Plusieurs conclusions et recommandations en matière d’économie comportementale sont formulées dans quatre articles. Aux fins de cette thèse, trois des quatre articles sont basés sur des expériences. Dans les expériences de laboratoire, les sujets ont géré leurs quotas sous la dénomination française de « permis d'émissions » (et non de PCA) dans la mesure où l'étude a été menée en France. Une des conclusions mise en évidence par les expériences est que l'étiquetage a une influence positive sur les participants. L'effet de l'étiquetage pourrait être introduit dans le système PCA de différentes manières. Par exemple, les quotas de carbone personnels accordés à l’ensemble des activités pourraient être étendus sous forme de quotas pour les transports en commun. Les transports en commun pourraient être étiquetés dans le budget. Il s’agirait d’une alternative moins polluante que les transports privés., Les expériences montrent que les sujets, qui disposent d’un certain nombre de PCA à dépenser exclusivement pour les transports publics sont incités à privilégier ce mode de transport. Une autre leçon qui peut être tirée de cette thèse est l’importance du retour d’informations et d’expérience. Les individus peuvent non seulement s’appuyer sur leurs expériences personnelles passées pour faire des choix (y compris des choix de transport) mais aussi vouloir étendre leurs connaissances grâce au retour d'expérience ... / The excessive anthropogenic activities related to burning of fossil fuels emit around 80 percent of greenhouse gases (GHG) in the atmosphere per year, according to the Intergovernmental Panel on Climate Change (IPCC, 2014). Among the GHG emissions, the anthropogenic CO2 emissions belong to the most dangerous ones. About 40 percent of these CO2 emissions have remained in the atmosphere (880 ± 35 GtCO2) since 1750, contributing to the global warming effect (IPCC, 2014). Since the 1950s, humanity is clearly responsible for more than half of the observed increases in temperatures (IPCC, 2014). The world energy consumption in 2011 tripled when comparing to 1965 and it has increased more rapidly than the world population (BP and UN, 2012). The above problem concerns a number of sectors, but only one of them has become the main subject of this dissertation. More precisely, this dissertation focuses on the transportation sector, which belongs to one of the greatest contributors of CO2 emissions to the atmosphere ((EC, 2012). Researchers warn that if the personal transportation demand continues to augment, which is likely due to the steady increase in population and greater accessibility to transport modes, the levels of congestion could become intolerable and even more costly to mitigate (Stern, 2006; EEA, 2010; Ostrom et al., 2012). Lack of changes in individual’s behavior, irrespectively of investment in abatement technologies, could lead to excessive costs, which already today are estimated to be high due to a very few low-carbon alternatives available (Abrell, 2007; Bottrill, 2006; Proost, 2008; SDC, 2005). The essays presented in this dissertation shed some light on how insights from the behavioral economics could be used to tackle the environmental pollution from personal transportation. At the core, lies the implementation of a market-based policy instrument (i.e., personal carbon allowances) in hypothetical commuting choices. The personal carbon allowances, abbreviated as PCA, constitute “a right to pollute” the atmosphere during personal activities, such as commuting and traveling (Roberts and Thumim, 2006; Howell, 2008; 2012; Parag et al., 2011). This dissertation provides suggestions on how a PCA design could influence personal choices of commuting. On the basis of four essays, a number of conclusions were drawn, and policy recommendations were formulated. For the purposes of this dissertation, PCA was defined to be any ‘cap-and-trade’ public policy instrument in which carbon emission rights are allocated to individuals. Three out of four essays encompassed laboratory experiments. The experimental subjects managed their allowances under a term emission permits (les permis d'émission, in French) because the study was conducted in France. One of the conclusions that should be highlighted is that the labeling effect had a positive influence on the experimental subjects and that it would be beneficial to consider it in the PCA scheme. For example, the personal carbon allowances that are granted for all activities could be extended by allowances that would be valid for public transportation only. The public transportation should be labeled in the budget because it is a less polluting alternative to private transportation. Having a certain number of allowances for public transportation at their disposal, subjects may be more willing to use this transport mode in replacement of commuting by private transportation. Another lesson that can be drawn from this dissertation is that the provision of feedback matters. Moreover, individuals may not only rely on their personal past experiences but also may want to extend their knowledge by the feedback on activities of their peers or neighbours....

The provision of ecosystem services within social-ecological systems is influenced by multiple environmental and anthropogenic driving forces, affecting natural ecosystems. At the same time, the capacity of ecosystems to concurrently provide different types of ecosystem services is inherently limited. Thus, ecosystem changes and their effect on ecosystem services have direct implications for human existence and well-being. The aim of this thesis is to present a modelling approach to assess regulating, provisioning and cultural ecosystem services and to quantify their potential trade-offs, illustrated by two case studies carried out in selected UNESCO Biosphere Reserves in the Czech Republic, Třeboň Basin Biosphere Reserve and Šumava Biosphere Reserve. Both of the selected case study areas are characterized by high levels of natural and cultural assets and challenges regarding future landscape management. In this study, first the social-ecological dynamics within the study areas was analysed by creating participative scenarios through collaboration with local stakeholders, eliciting their preferences regarding future landscape development to 2050. Second, the impact of the scenarios on ecosystem services and their trade-offs were assessed using a combination of spatially explicit models and...

The provision of ecosystem services within social-ecological systems is influenced by multiple environmental and anthropogenic driving forces, affecting natural ecosystems. At the same time, the capacity of ecosystems to concurrently provide different types of ecosystem services is inherently limited. Thus, ecosystem changes and their effect on ecosystem services have direct implications for human existence and well-being. The aim of this thesis is to present a modelling approach to assess regulating, provisioning and cultural ecosystem services and to quantify their potential trade-offs, illustrated by two case studies carried out in selected UNESCO Biosphere Reserves in the Czech Republic, Třeboň Basin Biosphere Reserve and Šumava Biosphere Reserve. Both of the selected case study areas are characterized by high levels of natural and cultural assets and challenges regarding future landscape management. In this study, first the social-ecological dynamics within the study areas was analysed by creating participative scenarios through collaboration with local stakeholders, eliciting their preferences regarding future landscape development to 2050. Second, the impact of the scenarios on ecosystem services and their trade-offs were assessed using a combination of spatially explicit models and...

The pursuit of Sustainable Development Goals (SDGs) requires a transformative approach to energy systems, focusing on cleaner, reliable, and affordable energy services. This pursuit of achieving the SDG 7 goal of universal access to affordable and clean energy, can have numerous positive and negative implications on all other SDGs and their targets. This thesis project explores and addresses these interlinkages between SDGs and energy projects, highlighting the synergies and trade-offs of energy projects to contribute to achieving the SDGs. In this project, we propose a methodology and framework to facilitate the integration of the SDGs into the energy project planning and implementation phase. This framework is implemented into a tool called SDGs-PROPEL (Sustainable Development Goals - PROject Performance Evaluationand Learnings) that is tailor-made to help energy practitioners identify potential trade-offs and synergies, and develop strategies to maximize positive impacts and minimize negative ones by prioritizing the SDGs that are relevant to their projects. The proposed methodology also takes into consideration the growing importance of Environmental, Social, and Governance (ESG) reporting, ensuring that energy projects align with sustainable practices and societal expectations. Three case studies - one Wind energy projectand two district heating projects, all in France, are utilized to test the SDGs-PROPEL tool. It also incorporates feedback from technology experts working in District Heating and Cooling(DHC) and wind energy in energy companies and academia. The tool was also tested by studentsat the master’s level at KTH Royal Institute of Technology. The proposed methodology in the SDGs-PROPEL tool can be used by any energy practitioner for building a robust testing process for their tools and, in turn, help address some of the challenges of integrating SDGs with energy projects by providing a structured approach to incorporating the SDGs into theplanning and implementation phase of the energy projects. In conclusion, this paper emphasizes the significance of incorporating the SDGs into energy projects as a means to drive sustainable development. By enabling companies to assess the environmental, social, and economic impacts of their energy initiatives, this integration plays a crucial role in addressing critical global issues like climate change, poverty reduction, and energy access. / Strävan efter hållbara utvecklingsmål (SDG) kräver ett transformativt förhållningssätt till energisystem, med fokus på renare, pålitliga och överkomliga energitjänster. Denna strävan efter att uppnå SDG 7-målet om universell tillgång till hållbar energi, kan ha många positiva och negativa konsekvenser för alla andra SDG och deras mål. Detta avhandlingsprojekt utforskar och tar upp dessa kopplingar mellan SDG och energiprojekt, och belyser synergierna och avvägningarna mellan energiprojekt för att bidra till att uppnå SDGs. I det här projektet föreslår vi en metod och ett ramverk för att underlätta integrationen av SDGs i energiprojektets planering och genomförandefas. Detta ramverk är implementerat i ett verktyg som kallas SDGs-PROPEL (Sustainable Development Goals - PROject Performance Evaluation and Learnings) som är skräddarsytt för att hjälpa energiutövare att identifiera potentiella avvägningar och synergier, och utveckla strategier för att maximera positiva effekter och minimera negativa. genom att prioritera de SDG som är relevanta för deras projekt. Den föreslagna metoden tar också hänsyn till den växande betydelsen av miljö-, social- och styrelserapportering (ESG), vilket säkerställer att energiprojekt överensstämmer med hållbar praxis och samhälleliga förväntningar. Tre fallstudier - ett vindenergiprojekt och två fjärrvärmeprojekt, alla i Frankrike, används för att testa SDGs-PROPEL-verktyget. Den innehåller också feedback från teknikexperter som arbetar med DHC och vindenergi i energiföretag och akademi. Verktyget testades även av studenter på masternivå vid Kungliga Tekniska Högskolan. Den föreslagna metoden i SDGs-PROPEL-verktyget kan användas av alla energiutövare för att bygga en robust testprocess för sina verktyg och i sin tur hjälpa till att hantera några av utmaningarna med att integrera SDGs med energiprojekt genom att tillhandahålla ett strukturerat tillvägagångssätt för att införliva SDGs in i planerings- och genomförandefasen av energiprojekten. Sammanfattningsvis betonar detta dokument betydelsen av att införliva SDGs i energiprojekt som ett sätt att driva hållbar utveckling. Genom att göra det möjligt för företag att bedöma de miljömässiga, sociala och ekonomiska effekterna av sina energiinitiativ, spelar denna integration en avgörande roll för att ta itu med kritiska globala frågor som klimatförändringar, fattigdomsminskning och tillgång till energi.

This thesis explores the integration of IoT protocols to enhance supply chain efficiency and sustainability by developing a flexible automated system. The research covers the integration of a palletization optimizer with a flexible robotic platform, a project conducted in collaboration with OpiFlex and Linköping University. Flexibility and sustainability in production, particularly in the food and beverage industry, are critical yet challenging to achieve. This research addresses these challenges by proposing a system that aligns the output with customer needs by combining these technologies. The research employs a combination of case study and exploratory methodologies. The development approach synthesizes elements from Set-Based Design, Point-Based Design, and Agile development frameworks. The primary research questions focus on identifying the best system architecture for integrating the palletization optimizer with a lower-level automation platform and outlining the steps needed to transform this integration into a commercially viable product. The system includes the optimizer, capable of processing customer orders and configuring products on mixed output pallets, integrated with a flexible robotic system provided by OpiFlex. The work involved evaluating communication protocols, MQTT, OPC UA, and TCP/IP, and designing robust interactions and interfaces between the subsystems. The results demonstrate the system's architecture and interaction protocols.  The thesis concludes with a discussion of the results in comparison to the application scenario and the standards consulted. The conclusion is that the chosen interface practices should remain largely intact but be re-developed using an OPC UA-based architecture. The main reasons for this are its support for both pub/sub and client-server models, increased security, and greater support for enterprise application integration. However, depending on the specific application, the downsides of OPC UA may outweigh its benefits.