10 results on '"Vonthron, S."'
Search Results
2. Sustainability of food purchases according to sociodemographic factors
- Author
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Somaraki, M, primary, Rollet, P, additional, Recchia, D, additional, Vonthron, S, additional, Perrin, C, additional, Bricas, N, additional, Charreire, H, additional, Perignon, M, additional, and Méjean, C, additional
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- 2023
- Full Text
- View/download PDF
3. Agroforesterie et services écosystémiques en zone tropicale
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Acuña Vargas, R., Agbossou, E., Albrecht, A., Allies, A., Allinne, C., Assigbetse, K., Aucante, M., Avelino, J., Awessou Kohomlan, G.-B., Babin, R., Badiane Ndour, N.Y., Badji, M., Bagny Beilhe, L., Balaya, R., Baranger, M., Barquero, A., Barthès, B., Benegas, L., Bidou, J.-É., Bihina, M.A., Binam, J.-N., Blanchet, A., Bogie, N., Bonifazi, M., Bonnefond, J.-M., Borgonovo, C., Bouambi, E., Boudrot, A., Brévault, T., Bright, M.B., Camara Baba, A., Cambou, A., Cappelaere, B., Carrière, S.-M., Chapuis-Lardy, L., Charbonnier, F., Chazarin, J.-P., Chevallier, T., Clément-Vidal, A., Clermont-Dauphin, C., Coly, L., Constanty, M., Cournac, L., Dauzat, J., Debenport, S., Defrenet, E., Degbé, M., Delay, C., Demarty, J., Devresse, Bruno, De Melo, E., de Melo Virginio Filho, E., Dhorne, S., Diakhaté, S., Diatta, Y., Dick, R.P., Diédhiou, I., Diop, M., Do, F., Dorgans-Cadilhac, J., Dreyer, E., Droy, I., Duthoit, M., Eberling, B., Eitel, J., Essobo, J.-D., Ferrand, N., Fonseca, C., Founoune-Mboup, H., Freguin-Gresh, S., Gay, F., Ghezzehei, T., Gidoin, C., Gomez-Delgado, F., Granados, E., Guidat, F., Gutiérrez Montes, I., Harmand, J.-M., Harmand, Jean-Michel, Humbert, Pascal, Isaac, M., Issoufou Bil-Assanou, H., Jagoret, P., Jara, M., Jourdan, C., Kim, J., Kinoshita, R., Koukpéré, A., Laffourcade, R., Lehner, P., Levang, P., Le Bissonnais, Y., Le Coq, J.-F., Le Maire, G., Loustau, D., Madsen, M., Mages, C., Maïnassara, I., Mallet, Bernard, Malmer, A., Manga Essouma, F., Martin, Adam, Mc Spadden Gardener, B., Merle, I., Michel, I., Moisy, C., Motisi, N., Moussa, R., Moussa Moumouni, R., Mvondo Sakouma, K., Nespoulous, J., Ngono, F., Ngo Bieng, M.A., Oï, M., Pédelahore, P., Pérez-Molina, J.-P., Peugeot, C., Picart, D., Pico, J., Priemé, A., Prieto, I., Ramirez, G., Rançon, F., Rapidel, B., Robelo, A., Robelo, D., Rocheteau, A., Roumet, C., Roupsard, O., Saint-André, L., Saj, S., Sambou, D.M., Sanchez-Murillo, R., Sanogo, D., Schnabel, F., Seghieri, J., Seghieri, Josiane, Séguis, L., Sibelet, N., Soma, M., Soti, V., Stokes, A., Taugourdeau, S., Ten Hoopen, G.M., Todem-Ngogue, H., Vaast, P., Valentin, C., van den Meersche, K., Velluet, C., Vézy, R., Vierling, L., Vonthron, S., Welsh, K., Seghieri, Josiane, and Harmand, Jean-Michel
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Afrique ,Geography ,économie ,cacao ,forêt ,tropique ,développement durable ,café ,Amérique latine ,développement économique ,environnement ,agriculture - Abstract
Respectueux de l’environnement et garantissant une sécurité alimentaire soutenue par la diversification des productions et des revenus qu’ils procurent, les systèmes agroforestiers apparaissent comme un modèle prometteur d’agriculture durable dans les pays du Sud les plus vulnérables aux changements globaux. Cependant, ces systèmes agroforestiers ne peuvent être optimisés qu’à condition de mieux comprendre et de mieux maîtriser les facteurs de leurs productions. L’ouvrage présente un ensemble de connaissances récentes sur les mécanismes biophysiques et socio-économiques qui sous-tendent le fonctionnement et la dynamique des systèmes agroforestiers. Il concerne, d’une part les systèmes agroforestiers à base de cultures pérennes, telles que cacaoyers et caféiers, de régions tropicales humides en Amérique du Sud, en Afrique de l’Est et du Centre, d’autre part les parcs arborés et arbustifs à base de cultures vivrières, principalement de céréales, de la région semi-aride subsaharienne d’Afrique de l’Ouest. Il synthétise les dernières avancées acquises grâce à plusieurs projets associant le Cirad, l’IRD et leurs partenaires du Sud qui ont été conduits entre 2012 et 2016 dans ces régions. L’ensemble de ces projets s’articulent autour des dynamiques des systèmes agroforestiers et des compromis entre les services de production et les autres services socio-écosystémiques que ces systèmes fournissent.
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- 2021
4. Chapitre 3 - Régulation des bioagresseurs du caféier par le couvert arboré au Costa Rica
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Allinne, C., Boudrot, A., De Melo, E., Granados, E., Merle, I., Pico, J., Vonthron, S., and Avelino, J.
- Subjects
Afrique ,Geography ,économie ,cacao ,forêt ,tropique ,développement durable ,café ,Amérique latine ,développement économique ,environnement ,agriculture - Abstract
Dans les systèmes agroforestiers, l’ombrage peut avoir des effets synergiques ou, au contraire, antagonistes sur l’expression des dégâts du complexe de bioagresseurs et des dommages associés. Les travaux présentés ont été réalisés dans des systèmes agroforestiers à base de caféiers au Costa Rica. Ils ont pour but d’illustrer les effets des interactions de l’ombrage à différents niveaux : avec le climat et l’environnement ; au sein même du cycle de vie d’un bioagresseur ; entre bioagresseurs du complexe parasitaire ; entre auxiliaires et bioagresseurs. L’effet de l’ombrage sur la fourniture de plusieurs services écosystémiques est également illustré. Nos résultats montrent que l’ombrage augmente la dispersion du pathogène Hemileia vastatrix, responsable de la rouille quand il pleut, alors qu’il la réduit quand il fait sec. L’ombrage favorise le processus pré-infectieux et la colonisation du caféier par la rouille, ainsi que sa régulation par son ennemi naturel, le champignon Lecanicillium lecaniii. Les effets de l’ombrage sont contraires selon le bioagresseur foliaire (deux basidiomycètes, deux ascomycètes et une larve de lepidoptère). Une approche « multipest » montre qu’un ombrage optimal permet de réduire l’impact total du cortège de bioagresseurs. Enfin, l’ombrage peut avoir des effets antagonistes selon les services écosystémiques, comme en réduisant directement la production mais en augmentant la régulation des bioagresseurs. L’étude des compromis de l’ensemble de ces services doit être réalisée afin de concevoir des systèmes permettant d’optimiser la régulation des bioagresseurs par l’intermédiaire l’ombrage. The shade cover on agroforestry systems can have synergic or antagonistic effects on the pest and disease (“bioagressor”) injury profile and the associated damages. The present study has been carried out in coffee-based agroforestry systems in Costa Rica and aims to illustrate the effects of shade interactions at different levels: with climate/environment, within the life cycle of a bioagressor, between bioagressors of the parasitic complex, and/or between bioagressors and their natural enemies. The impact of shading on the provision of ecosystem services is also illustrated. Our results show that under shade, the dispersion of coffee rust is increased under rainy conditions, while it is reduced under dry conditions. Shade promotes the pre-infectious process and the colonization of coffee by rust and at the same time its regulation by its natural enemy, Lecanicillium lecaniii. These effects are opposite according to the foliar pests and diseases, and our multipest approach makes it possible to demonstrate that optimal shading allows the reduction of the overall impact of foliar pests and diseases. Lastly, shading can have antagonistic effects depending on the ecosystem services, such as crop production and pest and disease regulation, and the study of trade-offs between all these services must be carried out in order to design systems which optimize pest and disease regulation via shading.
- Published
- 2021
5. Comment analyser les échanges de professionnels sur une liste de discussion : le cas des juges pour enfants
- Author
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Olry-Louis, Isabelle, Soidet, Isabelle, Mollo, Vanina, Véronique, Duveau, Centre de recherche sur le travail et le développement (CRTD), Conservatoire National des Arts et Métiers [CNAM] (CNAM), Laboratoire Parisien de Psychologie Sociale (LAPPS), Université Paris 8 Vincennes-Saint-Denis (UP8)-Université Paris Nanterre (UPN), Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J), A.-M. Vonthron, S. Pohl et P. Desrumaux (dir.), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse - Jean Jaurès (UT2J), Soidet, Isabelle, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), and HESAM Université (HESAM)-HESAM Université (HESAM)
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[SHS.PSY] Humanities and Social Sciences/Psychology ,[SHS.PSY]Humanities and Social Sciences/Psychology ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2011
6. Store-specific grocery shopping patterns and their association with objective and perceived retail food environments.
- Author
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Recchia D, Perignon M, Rollet P, Bricas N, Vonthron S, Perrin C, Sirieix L, Charreire H, and Méjean C
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- Humans, Adolescent, Adult, Cross-Sectional Studies, Food Preferences, Logistic Models, Food Supply, Commerce, Food, Family Characteristics
- Abstract
Objective: To explore store-specific grocery shopping patterns and assess associations with the objective and perceived retail food environment (RFE)., Design: This cross-sectional study used principal component analysis and hierarchical cluster analysis to identify grocery shopping patterns and logistic regression models to assess their associations with the RFE, while adjusting for household characteristics., Setting: The Montpellier Metropolitan Area, France., Participants: To be eligible for inclusion, participants had to be 18 years of age or older and reside in the Montpellier Metropolitan Area. Analyses were carried out on 415 households., Results: Households of cluster 'Supermarket' (49 % of households) primarily shopped at supermarkets and were less likely to live near a convenience store. Households of cluster 'Diversified' (18 %) shopped mostly at organic stores, at markets, at specialised stores, and from producers and were more likely to have a market in their activity space. Households of cluster 'Discount' (12 %) primarily shopped at discounters and were less likely to perceive a producer in their activity space. Households of cluster 'Convenience' (12 %) mostly shopped online or in convenience stores. Finally, households of cluster 'Specialized' (9 %) had high expenditures in greengrocers and in other specialised food stores and were more likely to live near a specialised food store., Conclusions: This study highlighted the importance of considering both perceived and objective RFE indicators, as well as assessments around the home and in activity space. Understanding how people buy food and interact with their RFE is crucial for policymakers seeking to improve urban food policies.
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- 2023
- Full Text
- View/download PDF
7. Corrigendum: Changes in Food Purchasing Practices of French Households During the First COVID-19 Lockdown and Associated Individual and Environmental Factors.
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Recchia D, Rollet P, Perignon M, Bricas N, Vonthron S, Perrin C, and Méjean C
- Abstract
[This corrects the article DOI: 10.3389/fnut.2022.828550.]., (Copyright © 2022 Recchia, Rollet, Perignon, Bricas, Vonthron, Perrin and Méjean.)
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- 2022
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8. Associations between retail food environment and the nutritional quality of food purchases in French households: The Mont'Panier cross-sectional study.
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Recchia D, Perignon M, Rollet P, Vonthron S, Tharrey M, Darmon N, Feuillet T, and Méjean C
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- Cross-Sectional Studies, Food, Nutritive Value, Commerce, Consumer Behavior
- Abstract
Purpose: The purpose of this study was to assess whether the retail food environment, measured by multiple indicators around the home and in activity space, was associated with the nutritional quality of food purchases., Methods: This cross-sectional study included 462 households from a quota sampling survey conducted in the south of France (Montpellier Metropolitan Area). The revised Healthy Purchase Index was implemented in order to assess the nutritional quality of food purchases. Food environment indicators (presence, number, relative density and proximity of food outlets) were calculated around the home and in activity space using a geographical information system. Six different types of food outlets were studied: supermarkets, markets, greengrocers, bakeries, other specialized food stores (butcher's, fishmonger's and dairy stores) and small grocery stores. Associations between food environment and the nutritional quality of food purchases were assessed using multilevel models, and geographically weighted regressions to account for spatial non-stationarity. Models were adjusted for households' socioeconomic and demographic characteristics., Results: The nutritional quality of food purchases was positively associated with the number of greengrocers around the home (1 vs. 0: β = 0.25, 95%CI = [0.01, 0.49]; >1 vs. 0: β = 0.25, 95%CI = [0.00, 0.50]), but negatively associated with the number of markets around the home (1 vs. 0: β = -0.20, 95%CI = [-0.40, 0.00]; >1 vs. 0: β = -0.37, 95%CI = [-0.69, -0.06]). These associations varied across space in the area studied. For lower income households, the number of greengrocers in activity space was positively associated with the nutritional quality of food purchases (1 vs. 0: β = 0.70, 95%CI = [0.12, 1.3]; >1 vs. 0: β = 0.67, 95%CI = [0.22, 1.1])., Conclusions: Greengrocers might be an effective type of food store for promoting healthier dietary behaviors. Further studies, particularly interventional studies, are needed to confirm these results in order to guide public health policies in actions designed to improve the food environment., Competing Interests: The authors have declared that no competing interests exist.
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- 2022
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9. Changes in Food Purchasing Practices of French Households During the First COVID-19 Lockdown and Associated Individual and Environmental Factors.
- Author
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Recchia D, Rollet P, Perignon M, Bricas N, Vonthron S, Perrin C, and Méjean C
- Abstract
Background: To limit the spread of COVID-19, a strict lockdown was imposed in France between March and May 2020. Mobility limitations and closure of non-essential public places (restaurants, open-air markets, etc.) affected peoples' food environment (FE) and thus their food purchasing practices (FPPs). This study aimed to explore changes in FPPs of French households during lockdown and associations with individual and environmental factors., Methods: In April of 2020 households from the Mont'Panier cross-sectional study ( n = 306), a quota sampling survey conducted in the south of France, were asked to complete an online questionnaire about their FPPs during lockdown and related factors, including perceived FE (distance to closest general food store, perception of increased food prices, etc.). Objective FE (presence, number, proximity, and density of food outlets) was assessed around participant's home using a geographical information system. Multiple correspondence analysis based on changes in frequency of use and quantity of food purchased by food outlet, followed by a hierarchical cluster analysis, resulted in the identification of clusters. Logistic regression models were performed to assess associations between identified clusters and household's sociodemographic characteristics, perceived, and objective FE., Results: Five clusters were identified. Cluster "Supermarket" (38% of the total sample), in which households reduced frequency of trips, but increased quantity bought in supermarkets during lockdown, was associated with lower incomes and the perception of increased food prices. Cluster "E-supermarket" (12%), in which households increased online food shopping with pickup at supermarket, was associated with higher incomes. Cluster "Diversified" (22%), made up of households who reduced frequency of trips to diverse food outlet types, was associated with the perception of increased food prices. Cluster "Organic Food Store" (20%), in which households did not change frequency of trips, nor quantity purchased in organic food stores, was associated with being older (35-50 y vs. <35 y). Finally, cluster "Producer" (8%), which includes households who regularly purchased food from producers, but mostly reduced these purchases during lockdown, was associated with the presence of an organic food store within a 1-km walking distance around home., Conclusion: This study highlighted diverse changes in FPPs during lockdown and overall more significant associations with perceived than with objective FE indicators., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Recchia, Rollet, Perignon, Bricas, Vonthron, Perrin and Méjean.)
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- 2022
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10. Foodscape: A scoping review and a research agenda for food security-related studies.
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Vonthron S, Perrin C, and Soulard CT
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- Food, Humans, Urban Population, Food Supply, Research
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Since 1995, the term 'foodscape', a contraction of food and landscape, has been used in various research addressing social and spatial disparities in public health and food systems. This article presents a scoping review of the literature examining how this term is employed and framed. We searched publications using the term foodscape in the Web of Science Core Collection, MEDLINE, and Scopus databases. Analyzing 140 publications, we highlight four approaches to the foodscape: (i) Spatial approaches use statistics and spatial analysis to characterize the diversity of urban foodscapes and their impacts on diet and health, at city or neighborhood scales. (ii) Social and cultural approaches at the same scales show that foodscapes are socially shaped and highlight structural inequalities by combining qualitative case studies and quantitative surveys of food procurement practices. (iii) Behavioral approaches generally focus on indoor micro-scales, showing how consumer perceptions of foodscapes explain and determine food behaviors and food education. (iv) Systemic approaches contest the global corporate food regime and promote local, ethical, and sustainable food networks. Thus, although spatial analysis was the first approach to foodscapes, sociocultural, behavioral and systemic approaches are becoming more common. In the spatial approach, the term 'foodscape' is synonymous with 'food environment'. In the three other approaches, 'foodscape' and 'food environment' are not synonymous. Scholars consider that the foodscape is not an environment external to individuals but a landscape including, perceived, and socially shaped by individuals and policies. They share a systemic way of thinking, considering culture and experience of food as key to improving our understanding of how food systems affect people. Foodscape studies principally address three issues: public health, social justice, and sustainability. The review concludes with a research agenda, arguing that people-based and place-based approaches need to be combined to tackle the complexity of the food-people-territory nexus., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2020
- Full Text
- View/download PDF
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