Nicolas Salliou

Last Name

Salliou

First Name

Nicolas

ORCID

0000-0003-3960-2175

Organisational unit

03823 - Grêt-Regamey, Adrienne / Grêt-Regamey, Adrienne

Show all metadata

Search Results

Publications 1 - 10 of 26

Coupling agent-based models and argumentation framework to simulate opinion dynamics: application to vegetarian diet diffusion
Taillandier, Patrick; Salliou, Nicolas; Thomopoulos, Rallou (2021)
Springer Proceedings in Complexity ~ Advances in Social Simulation
Agent-based simulation has been extensively used to study opinion dynamics. However, the vast majority of the existing models have been limited to extremely abstract and simplified representations of the diffusion process, which impairs the realism of the simulations and disables the understanding of the reasons for the shift of an actor’s opinion. This paper presents a generic framework implemented in the GAMA platform allowing to explicitly represent exchanges of arguments between actors in a context of an opinion dynamic model. More precisely, we propose to formalize the inner attitude towards an opinion of each agent as an argumentation graph and give them the possibility to share arguments with other agents. We present an application of the framework to study the evolution of the vegetarian diet at a city level.
Reduced Meat Consumption: from Multicriteria Argument Modeling to Agent-Based Social Simulation
Thomopoulos, Rallou; Salliou, Nicolas; Abreu, Carolina; et al. (2021)
International Journal of Food Studies
A second nutrition transition seems to be emerging towards more plant-based diets, curbing meatconsumption in developed countries at the beginning of the 21stcentury. This shift suggests thatrational arguments tend to influence an increasing number of individuals to adopt vegetarian diets.This work aimed to understand and simulate the impact of different types of messages on the choice tochange food diets at the individual level, and the impact of the diffusion of opinions at the collectivelevel. It provided two results: (1) a network of arguments around vegetarian diets is modelled usingan abstract argumentation approach. Each argument, formalized by a node, was connected with otherarguments by arrows, thus formalizing relationships between arguments. This methodology made itpossible to formalize an argument network about vegetarian diets and to identify the importance ofhealth arguments compared to ethical or other types of arguments. This methodology also identifiedkey arguments as a result of their high centrality in being challenged or challenging other arguments.The results of constructing this argument network suggested that any controversy surrounding veget-arian diets will be polarized around such high centrality arguments about health. Even though fewethical arguments appeared in our network, the health arguments concerning the necessity or not ofanimal products for humans were indirectly connected with ethical choices towards vegetarian diets; (2)an agent-based simulation of the social diffusion of opinions and practices concerning meat consump-tion is then introduced. The purpose of this simulation was to capture the balance of vegetarian vs.meat-based diets. It contributes to modelling consumer choices by exploring the balance between indi-vidual values and external influences such as social pressure, communication campaigns and sanitary,environmental or ethical crises.
In complexity we trust: learning from the socialist calculation debate for ecosystem management
Salliou, Nicolas; Stritih, Ana (2023)
Environmental Research Letters
Governance of Ecosystem Services in Agroecology: When Coordination is Needed but Difficult to Achieve
Salliou, Nicolas; Muradian, Roldan; Barnaud, Cécile (2019)
Sustainability
Transitioning towards agroecology involves the integration of biodiversity based ecosystem services into farming systems: for example, relying on biological pest control rather than pesticides. One promising approach for pest control relies on the conservation of semi-natural habitats at the landscape scale to encourage natural enemies of insect pests. However, this approach may require coordination between farmers to manage the interdependencies between the providers and beneficiaries of this ecosystem service. The main objective of this study was to identify hindrances to landscape-scale coordination strategies to control pests. To this end, we used a theoretical framework specifically designed to explore social interdependencies linked to ecosystem services. We applied this framework to a participatory research case study on pest control in apple orchards in southwest France to identify and describe key obstacles. We found four main impediments: (1) The perception of most stakeholders that the landscape does not deliver significant pest control services, (2) the challenge of coping with agroecological uncertainties, (3) an integrated vertical supply chain focused on pesticide use, (4) the existence of independent, non-collective alternatives. We discuss the potential of overcoming these obstacles or turning them into opportunities that promote a transition to agroecology and the integration of ecosystem services in farms and their supply chains.
"Je mange moins de viande! Quels arguments ?"
Salliou, Nicolas; Thomopoulos, Rallou (2018)
Viandes & Produits Carnés
Game of Cruxes: co-designing a game for scientists and stakeholders for identifying joint problems
Salliou, Nicolas; Bruley, Enora; Luthe, Tobias; et al. (2021)
Sustainability Science
Scientists increasingly cross their disciplinary boundaries and connect with local stakeholders to jointly solve complex problems. Working with stakeholders means higher legitimacy and supports practical impact of research. Games provide a tool to achieve such transdisciplinary collaboration. In this paper, we explore the use of a game in a participatory project where scientists and local stakeholders are seeking and defining a joint problem. The literature is clear that this step is essential but remains short on concrete methods. Here, we explore this potential in practice. We conducted parallel participatory processes in two alpine regions considered as socio-ecological system (SES) in Switzerland and France, both vulnerable to global change. Based on these two case studies, we co-constructed a game, integrating scientific concerns about key land use, climate change and socio-economic elements of a mountain SES (tourism, agriculture, housing and demography). With the game, we assessed the existence of joint problems connecting scientific and local interests. The game successfully engaged participants at both sites over 11 game sessions, showing potential of use in other transdisciplinary settings. By covering a wide array of issues, the game created a discussion space for listing problems and identifying where scientist and stakeholder interests overlap. In Switzerland, the game revealed no pressing joint problem to be addressed. In France, game sessions revealed, among other problems, an enduring and complex issue regarding the co-existence of inhabitants and powerful institutions. Having demonstrated the capacity of this game for joint-problem assessment, we believe other participatory research in similar SES could benefit from an early use of such an approach to frame the potential for collaboration.
Identifying levers of urban neighbourhood transformation using serious games
Schuur, Johann S.; Switalski, Michal; Salliou, Nicolas; et al. (2024)
npj Urban Sustainability
Growing urban population and contemporary urban systems lock-in unsustainable urban development pathways, deteriorating the living quality of urban dwellers. The systemic complexity of these challenges renders it difficult to find solutions using existing planning processes. Alternatively, transformative planning processes are radical, take place on multiple scales, and are often irreversible; therefore, require the integration of local stakeholders' perspectives, which are often contradictory. We identify perceived levers of urban transformative change using a serious game to facilitate the integration of these perspectives through simulating neighbourhood transformation processes in two European case studies. Building on existing transformation frameworks, we organize, conceptualize, and compare the effectiveness of these levers through demonstrating their interactions with different scales of transformation. Specifically, drawing from close commonalities between large-scale (Three Spheres of Transformation) and place-based (Place-making) transformation frameworks, we show how these interactions can help to develop recommendations to unlock urban transformative change. Results show that access to participation is a key lever enabling urban transformative change. It appears to be mid-level effective to unlock urban transformative change through interactions with the political sphere of transformation and procedural element of Place-making. Ultimately, however, most effective are those levers that interact with all scales of transformation. For example, by engaging a combination of levers including access to participation, public spaces, parking, place-characteristics and place-identity. These findings could be operationalized by self-organized transformation processes focused on repurposing hard infrastructure into public spaces, whilst ensuring continuity of place-based social- and physical features. Local stakeholders could further use such processes to better understand and engage with their individual roles in the transformative process, because interactions with the personal scale, i.e., personal sphere of transformation appear paramount to unlock urban transformative change.
Correction to: Game of Cruxes: co-designing a game for scientists and stakeholders for identifying joint problems
Salliou, Nicolas; Bruley, Enora; Moreau, Clémence; et al. (2021)
Sustainability Science
Making differences legible: Incommensurability as a vehicle for sustainable landscape management
Allain, Sandrine; Salliou, Nicolas (2022)
Ecological Economics
Landscape management involves tackling both systemic and social complexity: the former due to multiple interacting entities, the latter due to incommensurable knowledge and value systems of stakeholders. Current practice in landscape management makes wide use of participatory methods, which helps increase the breadth of our understanding of sustainability problems, e.g. biodiversity loss, agricultural pest damages or water penury. However, this practice also often offers a flat, harmonized picture of the landscape, which precludes observing ambiguities and out-of-the-box arguments and ideas for overcoming problems. In this article, we analyzed two research settings that tended to surface and formalize incommensurability between stakeholders regarding the sustainable management of landscapes – one focused on quantitative water management, the other on agroecological pest control. The objective was to investigate if and to which extent these ‘opening-up’ exercises, based on a deliberative rationale, were beneficial to landscape sustainability. The results indicated that in both cases, participants strove to position their knowledge and values relative to others: this way, they delineated a negotiation and learning space to invest in, and enhanced the quality of their arguments, allowing new insights on the focus issues. These findings offer an operational counterpoint to the prevalence of ‘closing-down’ approaches in landscape approaches. In the general context of ecological crisis, these examples promote methodological options that offer space to disruptive narratives, as well as tools that allow a reflexive use of the scientific knowledge, models and indicators traditionally used in sustainability appraisals, without discarding them. © 2021 Elsevier B.V. All rights reserved.
Can a Science Week empower scientists for conservation advocacy?
Stritih, Ana; Brouillet, Constance; Habe, Manuela; et al. (2025)
Environmental Science & Policy
Scientists feel a growing need to advocate for knowledge-driven policies to address climate change and biodiversity loss, yet few feel empowered to do so. During the Neretva Science Week (NSW) 2023, an international group of scientists conducted research on the threatened Neretva River in Bosnia and Herzegovina, and had the opportunity to engage with activists and journalists. We used a questionnaire to investigate the perspectives of these scientists on public engagement, scientific advocacy, ecological grief, and perceived political empowerment. To assess how these views might be influenced by participation in the NSW, we administered the questionnaire at the beginning of the NSW, immediately after, and three months following the event. We found high levels of ecological grief and moderate levels of perceived political empowerment. Scientists working outside of academia reported higher levels of empowerment, and local scientists had a more positive attitude towards being involved in decision-making about ecosystem management. Attitudes towards scientific advocacy were already mostly positive before the NSW and did not improve during the week, but most participants reported being motivated to increase their public engagement after the NSW. Although unlikely to change deeply rooted beliefs about the role of science, events such as the NSW can play a critical role in bridging the gap between academia and advocacy.

Publications 1 - 10 of 26

Nicolas Salliou

Last Name

First Name

ORCID

Organisational unit

Filters

Search Results