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Green tides of macroalgae have been negatively affecting the coasts of Brittany, France, for at least five decades, caused by excessive nitrogen inputs from the farming sector. Regular areal estimates of green tide surfaces are publicly available but only from 2002 onwards. Using free and openly accessible Landsat satellite imagery archives over 35 years (1984–2019), this study explores the potential of remote sensing for detection and long-term monitoring of green macroalgae blooms. By using a Google Earth Engine (GEE) script, we were able to detect and quantify green tide surfaces using the Normalized Difference Vegetation Index (NDVI) and Normalized Difference Water Index (NDWI) at four highly affected beaches in Northern Brittany. Mean green tide coverage was derived and analyzed from 1984 to 2019, at both monthly and annual scales. Our results show important interannual and seasonal fluctuations in estimated macroalgae cover. In terms of trends over time, green tide events did not show a decrease in extent at three out of four studied sites. The observed decrease in nitrogen concentrations for the rivers draining the study sites has not resulted in a reduction of green tide extents.
Louise Schreyers; Tim van Emmerik; Lauren Biermann; Yves-François Le Lay. Spotting Green Tides over Brittany from Space: Three Decades of Monitoring with Landsat Imagery. Remote Sensing 2021, 13, 1408 .
AMA StyleLouise Schreyers, Tim van Emmerik, Lauren Biermann, Yves-François Le Lay. Spotting Green Tides over Brittany from Space: Three Decades of Monitoring with Landsat Imagery. Remote Sensing. 2021; 13 (8):1408.
Chicago/Turabian StyleLouise Schreyers; Tim van Emmerik; Lauren Biermann; Yves-François Le Lay. 2021. "Spotting Green Tides over Brittany from Space: Three Decades of Monitoring with Landsat Imagery." Remote Sensing 13, no. 8: 1408.
Anne-Lise Boyer; Lise Vaudor; Yves-François Le Lay; Pascal Marty. Building Consensus? The Production of a Water Conservation Discourse Through Twitter: The Water use it Wisely Campaign in Arizona. Environmental Communication 2020, 15, 285 -300.
AMA StyleAnne-Lise Boyer, Lise Vaudor, Yves-François Le Lay, Pascal Marty. Building Consensus? The Production of a Water Conservation Discourse Through Twitter: The Water use it Wisely Campaign in Arizona. Environmental Communication. 2020; 15 (3):285-300.
Chicago/Turabian StyleAnne-Lise Boyer; Lise Vaudor; Yves-François Le Lay; Pascal Marty. 2020. "Building Consensus? The Production of a Water Conservation Discourse Through Twitter: The Water use it Wisely Campaign in Arizona." Environmental Communication 15, no. 3: 285-300.
Our research questions the implementation of rainwater harvesting in Tucson (Arizona) and how it can modify the southwestern United States hydrosocial cycle based on large infrastructures and managed by powerful federal and state agencies. In the context of climate change, the hydrosocial cycle in Tucson is threatened by a water shortage on the Colorado River and has become therefore a controversial issue in the public debate. The implementation of rainwater harvesting in Tucson is the outcome of two different processes: on one hand, it is a “hydrosocial fix” supported by the City to diversify its water portfolio; on the other hand, rainwater harvesting is promoted as a critique towards the current regional hydrosocial cycle. In both cases, the small and local technical systems of rainwater harvesting help materializing the hydrosocial cycle and therefore placing water issues at the heart of the inhabitant’s concerns.
Anne-Lise Boyer; Yves-François Le Lay. « Think of your house as a watershed ! » La récupération des eaux de pluie à Tucson, en Arizona : vers la diversification de l’approvisionnement en eau dans le Sud-Ouest étasunien ? Développement durable et territoires 2019, 1 .
AMA StyleAnne-Lise Boyer, Yves-François Le Lay. « Think of your house as a watershed ! » La récupération des eaux de pluie à Tucson, en Arizona : vers la diversification de l’approvisionnement en eau dans le Sud-Ouest étasunien ? Développement durable et territoires. 2019; (Vol. 10, n):1.
Chicago/Turabian StyleAnne-Lise Boyer; Yves-François Le Lay. 2019. "« Think of your house as a watershed ! » La récupération des eaux de pluie à Tucson, en Arizona : vers la diversification de l’approvisionnement en eau dans le Sud-Ouest étasunien ?" Développement durable et territoires , no. Vol. 10, n: 1.
Riverscapes are constructs that mix natural components with political, socioeconomic, and technical strategies. This article shows how the riverscapes of the Rhône in France have changed under the influence of different power relations. We use newspapers to highlight the potential of news outlets as a data source with which to apply Foucault’s critical and genealogical methods and to develop a political ecology of socioecological fixes. Media coverage is proxied by a content analysis and textual data analysis of 1,079 articles published in Le Monde from 1945 to 2013. We study variations of newspaper discourse to create five chronological narratives: (1) the reconstruction of France and the creation of new landscapes, (2) the promotion of national development through navigation, (3) the quest for energy independence through dams and nuclear power plants, (4) the abandonment of major projects, and (5) the definition of pollution and flooding as national problems at the same time as the rediscovery of landscapes as local amenities. River landscapes are related to national political objectives, even though schemes for the Rhône seem to be ever less geared to national ambitions. In specific contexts, bottom-up advocacy coalitions occasionally prove powerful enough to influence socioecological trajectories: Their power seems to be on the rise as the national project wanes. They are often opposed to new socioecological fixes. Although political drivers are instrumental in shaping the Rhône, economic dynamics are crucial. Energy production seems to be a good indicator for monitoring socioecological fixes along major rivers because it involves fixed capital. Key Words: construction of riverscape, discourse, political ecology, socioecological fix, temporal patterns.
Emeline Comby; Yves-François Le Lay; Hervé Piégay. Power and Changing Riverscapes: The Socioecological Fix and Newspaper Discourse Concerning the Rhône River (France) Since 1945. Annals of the American Association of Geographers 2019, 109, 1671 -1690.
AMA StyleEmeline Comby, Yves-François Le Lay, Hervé Piégay. Power and Changing Riverscapes: The Socioecological Fix and Newspaper Discourse Concerning the Rhône River (France) Since 1945. Annals of the American Association of Geographers. 2019; 109 (6):1671-1690.
Chicago/Turabian StyleEmeline Comby; Yves-François Le Lay; Hervé Piégay. 2019. "Power and Changing Riverscapes: The Socioecological Fix and Newspaper Discourse Concerning the Rhône River (France) Since 1945." Annals of the American Association of Geographers 109, no. 6: 1671-1690.
In this paper, we propose and discuss a methodology to map the spatial fingerprints of novels and authors based on all of the named urban roads (i.e., odonyms) extracted from novels. We present several ways to explore Parisian space and fictional landscapes by interactively and simultaneously browsing geographical space and literary text. Our project involves building a platform capable of retrieving, mapping and analyzing the occurrences of named urban roads in novels in which the action occurs wholly or partly in Paris. This platform will be used in several areas, such as cultural tourism, urban research, and literary analysis. The paper focuses on extracting named urban roads and mapping the results for a sample of 31 novels published between 1800 and 1914. Two approaches to the annotation of odonyms are compared. First, we describe a proof of concept using queries made via the TXM textual analysis platform. Then, we describe an automatic process using a natural language processing (NLP) method. Additionally, we mention how the geosemantic information annotated from the text (e.g., a structure combining verbs, spatial relations, named entities, adjectives and adverbs) can be used to automatically characterize the semantic content associated with named urban roads.
Ludovic Moncla; Mauro Gaio; Thierry Joliveau; Yves-François Le Lay; Noémie Boeglin; Pierre-Olivier Mazagol. Mapping urban fingerprints of odonyms automatically extracted from French novels. International Journal of Geographical Information Science 2019, 33, 2477 -2497.
AMA StyleLudovic Moncla, Mauro Gaio, Thierry Joliveau, Yves-François Le Lay, Noémie Boeglin, Pierre-Olivier Mazagol. Mapping urban fingerprints of odonyms automatically extracted from French novels. International Journal of Geographical Information Science. 2019; 33 (12):2477-2497.
Chicago/Turabian StyleLudovic Moncla; Mauro Gaio; Thierry Joliveau; Yves-François Le Lay; Noémie Boeglin; Pierre-Olivier Mazagol. 2019. "Mapping urban fingerprints of odonyms automatically extracted from French novels." International Journal of Geographical Information Science 33, no. 12: 2477-2497.
Choices have to be made to manage invasive species because eradication often is not possible. Both ecological and social factors have to be considered to improve the efficiency of management plans. We conducted a social study on Fallopia spp., a major invasive plant taxon in Europe, including (1) a survey on the perception of a landscape containing Fallopia spp. using a photoquestionnaire and (2) an analysis of the social representations of Fallopia spp. of managers and users in one highly invaded area and one less invaded area. The respondents to the photoquestionnaire survey appreciated the esthetics of the landscapes less when tall Fallopia spp. were present. Few people were able to identify and name the plant, and this knowledge negatively affected the appreciation of the photos containing Fallopia spp. The central core of the social representation of Fallopia spp. was composed of the invasive status of the plant, its density, and its ecological impacts. The peripheral elements of the representation depended on the people surveyed. The users highlighted the natural aspect whereas the managers identified the need for control. In the invaded area, the managers qualified the species as “unmanageable,” whereas the species was qualified as “foreign” in the less invaded area. Those results provide insights that have to be included when objectives of management plans of these species are selected.
S. Rouifed; M. Cottet; M. De Battista; Y-F Le Lay; F. Piola; P. Rateau; A. Rivière-Honegger. Landscape perceptions and social representations of Fallopia spp. in France. The Science of Nature 2018, 105, 67 .
AMA StyleS. Rouifed, M. Cottet, M. De Battista, Y-F Le Lay, F. Piola, P. Rateau, A. Rivière-Honegger. Landscape perceptions and social representations of Fallopia spp. in France. The Science of Nature. 2018; 105 (11-12):67.
Chicago/Turabian StyleS. Rouifed; M. Cottet; M. De Battista; Y-F Le Lay; F. Piola; P. Rateau; A. Rivière-Honegger. 2018. "Landscape perceptions and social representations of Fallopia spp. in France." The Science of Nature 105, no. 11-12: 67.
What is a resilient system? From an (eco)geomorphic point of view, the answer is complex owing to the polysemy of the term resilience and its wide range of uses from one discipline to another. In all cases, this concept provides a way of thinking of rivers' future in terms of persistence, sometimes cyclically, sometimes with respect to evolutionary trajectories, and with or without humans as internal parameters. The popularity of resilience in ecology and amongst the social-ecological systems community, following the pioneer works of Holling (1973), has influenced the way we consider the concept in geomorphology and creates misunderstanding and debates. In this contribution, we retrace the evolution of the term over time, introduce the different types of resilience, resilience to pulse, ramp or press disturbances, and show its implicit presence in (fluvial) system theory. Both schools of thought highlight trajectory patterns of systems with positive visions of Earth's future. We then explore some challenging issues in ecogeomorphology related to resilience when considering system responses to discrete events and to a set of internal or external drivers.
Hervé Piégay; Antoine Chabot; Yves-François Le Lay. Some comments about resilience: From cyclicity to trajectory, a shift in living and nonliving system theory. Geomorphology 2018, 367, 106527 .
AMA StyleHervé Piégay, Antoine Chabot, Yves-François Le Lay. Some comments about resilience: From cyclicity to trajectory, a shift in living and nonliving system theory. Geomorphology. 2018; 367 ():106527.
Chicago/Turabian StyleHervé Piégay; Antoine Chabot; Yves-François Le Lay. 2018. "Some comments about resilience: From cyclicity to trajectory, a shift in living and nonliving system theory." Geomorphology 367, no. : 106527.
Integrated water resources management, promoted in developed countries, obliges to integrate social aspects with hydrological and ecological dimensions when assessing river quality. To better understand these social aspects, we propose a mixed-method to study public perceptions of an impounded river. Since the 1930s, the management of the Ain river (France) has been challenged by conflicts about the river’s quality. We surveyed (using interviews and mental maps) various stakeholders along the river. The results based on textual and content analysis show variations in the public’s perceptions according to the residence area, practices, and the degree of emotional attachment to the river. The assessment of environmental quality needs to take into account different types of knowledge, sometimes conflicting, that reveal and shape the variety of waterscapes which compose the Ain River. The social dimensions highlight integrated water management’s inherent complexity by considering the river basin as a place to live and by involving multiple stakeholders.
Anne-Lise Boyer; Emeline Comby; Silvia Flaminio; Yves-François Le Lay; Marylise Cottet. The social dimensions of a river’s environmental quality assessment. Ambio 2018, 48, 409 -422.
AMA StyleAnne-Lise Boyer, Emeline Comby, Silvia Flaminio, Yves-François Le Lay, Marylise Cottet. The social dimensions of a river’s environmental quality assessment. Ambio. 2018; 48 (4):409-422.
Chicago/Turabian StyleAnne-Lise Boyer; Emeline Comby; Silvia Flaminio; Yves-François Le Lay; Marylise Cottet. 2018. "The social dimensions of a river’s environmental quality assessment." Ambio 48, no. 4: 409-422.
Le barrage de Loyettes, prévu sur le Haut-Rhône, est l’un des premiers projets d’ouvrage hydro-électrique annulés en France ; bloqué dès l’enquête publique en 1982, il a été définitivement abandonné en 1990. L’étude de la controverse autour de ce projet se fonde sur des entretiens réalisés 30 ans plus tard (n =17) et des documents issus d’archives municipales, régionales, nationales et privées. Cet article montre comment la complexification progressive du jeu de valeurs et le désinvestissement actuel du site ne semblent pas permettre la construction d’un « capital environnemental ».
Silvia Flaminio; Yves-François Le Lay. Vers la construction d’un capital environnemental par la lutte contre un projet d’aménagement ? Le barrage de Loyettes (Rhône-Alpes). Développement durable et territoires 2017, 1 .
AMA StyleSilvia Flaminio, Yves-François Le Lay. Vers la construction d’un capital environnemental par la lutte contre un projet d’aménagement ? Le barrage de Loyettes (Rhône-Alpes). Développement durable et territoires. 2017; (Vol. 8, n°):1.
Chicago/Turabian StyleSilvia Flaminio; Yves-François Le Lay. 2017. "Vers la construction d’un capital environnemental par la lutte contre un projet d’aménagement ? Le barrage de Loyettes (Rhône-Alpes)." Développement durable et territoires , no. Vol. 8, n°: 1.
Le castor du Rhône revient de loin. Cantonné à la Camargue et au Bas-Rhône à la fin du XIXe siècle, ce rongeur a reconquis le corridor fluvial au cours du XXe siècle. Adoptant une perspective géohistorique, cet article appréhende le castor comme un agent dont les relations sont étroites tant avec les paysages fluviaux qu’avec les communautés riveraines. Il analyse les régimes utilitaire et patrimonial dont les représentations du castor ont fait l’objet, puis la contribution de ses porte-parole au développement de son aire de disparition, et enfin le renouvellement des enjeux écologiques et sociaux que l’accroissement de sa population suscite.
Yves-François Le Lay; Paul Arnould; Emeline Comby. Le castor, un agent en eau trouble. L’exemple du fleuve Rhône. Géocarrefour 2017, 91, 1 .
AMA StyleYves-François Le Lay, Paul Arnould, Emeline Comby. Le castor, un agent en eau trouble. L’exemple du fleuve Rhône. Géocarrefour. 2017; 91 (91/4):1.
Chicago/Turabian StyleYves-François Le Lay; Paul Arnould; Emeline Comby. 2017. "Le castor, un agent en eau trouble. L’exemple du fleuve Rhône." Géocarrefour 91, no. 91/4: 1.
International audienceThe success or failure of environmental management goals can be partially attributed to the support for such goals from the public. Despite this, environmental management is still dominated by a natural science approach with little input from disciplines that are concerned with the relationship between humans and the natural environment such as environmental psychology. Within the marine and freshwater environments, this is particularly concerning given the cultural and aesthetic significance of these environments to the public, coupled with the services delivered by freshwater and marine ecosystems, and the vulnerability of aquatic ecosystems to human-driven environmental perturbations. This paper documents nine case studies which use environmental psychology methods to support a range of aquatic management goals. Examples include understanding the drivers of public attitudes towards ecologically important but uncharismatic river species, impacts of marine litter on human well-being, efficacy of small-scale governance of tropical marine fisheries and the role of media in shaping attitudes towards. These case studies illustrate how environmental psychology and natural sciences can be used together to apply an interdisciplinary approach to the management of aquatic environments. Such an approach that actively takes into account the range of issues surrounding aquatic environment management is more likely to result in successful outcomes, from both human and environmental perspectives. Furthermore, the results illustrate that better understanding the societal importance of aquatic ecosystems can reduce conflict between social needs and ecological objectives, and help improve the governance of aquatic ecosystems. Thus, this paper concludes that an effective relationship between academics and practitioners requires fully utilising the skills, knowledge and experience from both sectors
Kate Walker-Springett; Rebecca Jefferson; Kerstin Böck; Annette Breckwoldt; Emeline Comby; Marylise Cottet; Gundula Hübner; Yves-François Le Lay; Sylvie Shaw; Kayleigh Wyles. Ways forward for aquatic conservation: Applications of environmental psychology to support management objectives. Journal of Environmental Management 2016, 166, 525 -536.
AMA StyleKate Walker-Springett, Rebecca Jefferson, Kerstin Böck, Annette Breckwoldt, Emeline Comby, Marylise Cottet, Gundula Hübner, Yves-François Le Lay, Sylvie Shaw, Kayleigh Wyles. Ways forward for aquatic conservation: Applications of environmental psychology to support management objectives. Journal of Environmental Management. 2016; 166 ():525-536.
Chicago/Turabian StyleKate Walker-Springett; Rebecca Jefferson; Kerstin Böck; Annette Breckwoldt; Emeline Comby; Marylise Cottet; Gundula Hübner; Yves-François Le Lay; Sylvie Shaw; Kayleigh Wyles. 2016. "Ways forward for aquatic conservation: Applications of environmental psychology to support management objectives." Journal of Environmental Management 166, no. : 525-536.
La restauration des cours d’eau, encouragée par la Directive Cadre sur l’Eau (2000), se traduit par des changements brutaux du paysage fluvial, comme la modification du tracé du chenal ou la revégétalisation des berges. L’évaluation de telles opérations suppose de réaliser un suivi physique mais aussi social, pour comprendre comment les riverains réceptionnent les projets de restauration. Cette étude porte sur l’acceptation des évolutions paysagères de l’Yzeron : cette rivière du Grand Lyon a été particulièrement artificialisée et provoque de fréquentes inondations auxquelles un projet d’aménagement s’efforce de remédier. L’étude s’appuie sur plusieurs enquêtes par questionnaires et entretiens, des documents d’archives ainsi que les dossiers de concertation et d’enquête publique. Si le paysage ne constitue pas l’épine dorsale du projet de restauration, les résultats soulignent la vive attention que les riverains lui portent : la majorité d’entre eux dénonce l’artificialisation de la rivière et pense que les opérations amélioreront la qualité paysagère. De fait, le projet d’aménagement, initialement hydraulique, a évolué en intégrant des volets écologiques, paysagers et récréatifs. La reconnaissance progressive du caractère multifonctionnel de cette rivière urbaine n’a cependant pas placé la question du paysage au centre d’un débat public. Or, les résultats des enquêtes révèlent un hiatus entre les représentations des gestionnaires et celles des riverains. Dans la perspective d’une gestion intégrée, il serait donc souhaitable de favoriser la participation citoyenne autour de la gestion du paysage fluvial, dont les critères d’évaluation varient d’un acteur à l’autre en milieu urbain. River restoration, encouraged by the Water Framework Directive (2000), can brutally transform riverscapes (channel reconfiguration, re-vegetation…). The evaluation of such schemes requires a monitoring of the physical changes but also a follow-up of the social responses to river restoration. The study concentrates on the landscapes of the Yzeron River, under restoration, at Oullins (69, France). This tributary of the Rhône River is an extremely dangerous stream – its flow is very variable – and is completely artificialized – it was canalized during the 20th century. Nonetheless, the floods of this urban river are becoming more and more frequent. In order to prevent them, a restoration scheme is being put into practice. The study is based on various surveys, on local archives and on the records of the public consultations. The results show that although the riverscape was never the backbone of the project, the landscape issues do exist. The quality of the landscape was not at the heart of the debates, but it is evoked by the riverside residents: most of them are sorry about the current state of the river and believe the project will improve the landscape quality. Ecological, recreational and landscape concerns were added to the original project which focused on flood prevention. However, the landscape quality was never discussed with the riverside residents. The results clearly reveal a gap between the public’s perception and the stakeholders’: each value the river according to different criteria. When seeking integrative management, it seems preferable to broaden the public debate and to introduce discussions on landscape quality.
Silvia Flaminio; Marylise Cottet; Yves-François Le Lay. A la recherche de l'Yzeron perdu : quelle place pour le paysage dans la restauration des rivières urbaines ? Norois 2015, 65 -79.
AMA StyleSilvia Flaminio, Marylise Cottet, Yves-François Le Lay. A la recherche de l'Yzeron perdu : quelle place pour le paysage dans la restauration des rivières urbaines ? Norois. 2015; (237):65-79.
Chicago/Turabian StyleSilvia Flaminio; Marylise Cottet; Yves-François Le Lay. 2015. "A la recherche de l'Yzeron perdu : quelle place pour le paysage dans la restauration des rivières urbaines ?" Norois , no. 237: 65-79.
Studying the perceptions of stakeholders or interested parties is a good way to better understand behaviours and decisions. This is especially true for the management of invasive species such as Japanese knotweed s.l. This plant has spread widely in the Rhône basin, where significant financial resources have been devoted to its management. However, no control technique is recognized as being particularly effective. Many uncertainties remain and many documents have been produced by environmental managers to disseminate current knowledge about the plant and its management. This article aims at characterizing the perceptions that environmental managers have of Japanese knotweed s.l. A discourse analysis was conducted on the printed documentation produced about Japanese knotweed s.l. by environmental managers working along the Rhône River (France). The corpus was both qualitatively and quantitatively analysed. The results indicated a diversity of perceptions depending on the type of environmental managers involved, as well as the geographical areas and scales on which they acted. Whereas some focused on general knowledge relating to the origins and strategies of colonization, others emphasized the diversity and efficacy of the prospective eradication techniques. There is a real interest in implementing targeted actions to meet local issues. To do so, however, these issues must be better defined. This is a challenging task, as it must involve all types of stakeholders.
Marylise Cottet; Florence Piola; Yves-François Le Lay; Soraya Rouifed; Anne Rivière-Honegger. How environmental managers perceive and approach the issue of invasive species: the case of Japanese knotweed s.l. (Rhône River, France). Biological Invasions 2015, 17, 3433 -3453.
AMA StyleMarylise Cottet, Florence Piola, Yves-François Le Lay, Soraya Rouifed, Anne Rivière-Honegger. How environmental managers perceive and approach the issue of invasive species: the case of Japanese knotweed s.l. (Rhône River, France). Biological Invasions. 2015; 17 (12):3433-3453.
Chicago/Turabian StyleMarylise Cottet; Florence Piola; Yves-François Le Lay; Soraya Rouifed; Anne Rivière-Honegger. 2015. "How environmental managers perceive and approach the issue of invasive species: the case of Japanese knotweed s.l. (Rhône River, France)." Biological Invasions 17, no. 12: 3433-3453.
À l’interface du droit et de la pratique, les usages locaux influent tant sur les cadres de connaissance des individus que sur leurs actions environnementales. Ils contribuent donc à former et à entretenir des paysages culturels qui procèdent des relations intimes que les sociétés nouent avec leur environnement. En s’appuyant sur un corpus de 129 recueils publiés au XIXe et au XXe siècles et en se focalisant plus particulièrement sur l’exemple de la Dombes, cet article s’efforce de montrer en quoi ils relèvent d’un processus de patrimonialisation plurielle. Les usages locaux patrimonialisent des savoirs et des savoir-faire qui favorisent le maintien des espèces, des paysages et des identités. Bien que situés à la base de la pyramide du droit français, ils sont ainsi garants de la durabilité d’éléments socio-environnementaux dont la valeur patrimoniale peut être élevée, comme les étangs de la Dombes.
Stéphanie De Carrara; Yves-François Le Lay. Quand l’usage fait patrimoine. Vers une patrimonialisation des usages et des paysages culturels ? Développement durable et territoires 2015, 1 .
AMA StyleStéphanie De Carrara, Yves-François Le Lay. Quand l’usage fait patrimoine. Vers une patrimonialisation des usages et des paysages culturels ? Développement durable et territoires. 2015; (Vol.6, n°1):1.
Chicago/Turabian StyleStéphanie De Carrara; Yves-François Le Lay. 2015. "Quand l’usage fait patrimoine. Vers une patrimonialisation des usages et des paysages culturels ?" Développement durable et territoires , no. Vol.6, n°1: 1.
Different water Acts (e.g., the European Water Framework Directive) and stakeholders involved in aquatic affairs have promoted integrated river basin management over recent decades. However, few studies have provided feedback on these policies. The aim of the current article is to fill this gap by exploring how local newspapers reflect the implementation of a broad public participation within a catchment of France known for its innovation with regard to this domain. The media coverage of a water management strategy in the Drôme watershed from 1981 to 2008 was investigated using a content analysis and a geographic information system. We sought to determine what public participation and decentralized decision-making can be in practice. The results showed that this policy was integrated because of its social perspective, the high number of involved stakeholders, the willingness to handle water issues, and the local scale suitable for participation. We emphasized the prominence of the watershed scale guaranteed by the local water authority. This area was also characterized by compromise, arrangements, and power dynamics on a fine scale. We examined the most politically engaged writings regarding water management, which topics of each group emphasized, and how the groups agreed and disagreed on issues based on their values and context. The temporal pattern of participation implementation was progressive but worked by fits and starts.
Emeline Comby; Yves-François Le Lay; Hervé Piégay. The Achievement of a Decentralized Water Management Through Stakeholder Participation: An Example from the Drôme River Catchment Area in France (1981–2008). Environmental Management 2014, 54, 1074 -1089.
AMA StyleEmeline Comby, Yves-François Le Lay, Hervé Piégay. The Achievement of a Decentralized Water Management Through Stakeholder Participation: An Example from the Drôme River Catchment Area in France (1981–2008). Environmental Management. 2014; 54 (5):1074-1089.
Chicago/Turabian StyleEmeline Comby; Yves-François Le Lay; Hervé Piégay. 2014. "The Achievement of a Decentralized Water Management Through Stakeholder Participation: An Example from the Drôme River Catchment Area in France (1981–2008)." Environmental Management 54, no. 5: 1074-1089.
La dualité ville-campagne et le modèle centre-périphérie ont servi de clés de lecture aux géographes et, plus généralement, aux spécialistes des sciences sociales qui se sont efforcés de décrire et d’expliquer le fonctionnement, la structure et l’évolution des agglomérations urbaines. Au cours du xxe siècle, nombre de villes ont vu leur emprise spatiale et leur population doubler plusieurs fois, leurs centres et leurs périphéries se dédoubler, si bien que les observateurs ont redoublé d’efforts pour se doter de nouveaux mots mieux à même de rendre compte des mutations de la ville et de ses doubles. L’article souligne leur créativité, stimulée par l’émergence d’un modèle du troisième type, éminemment urbain à défaut de rester pleinement citadin ou rural.
Paul Arnould; Yves-François Le Lay. La ville et ses doubles. Questions de communication 2014, 103 -124.
AMA StylePaul Arnould, Yves-François Le Lay. La ville et ses doubles. Questions de communication. 2014; (25):103-124.
Chicago/Turabian StylePaul Arnould; Yves-François Le Lay. 2014. "La ville et ses doubles." Questions de communication , no. 25: 103-124.
International audienceThe case study of the polychlorinated biphenyl (PCB) pollutions of the Rhône River (France) offers the possibility of studying criteria for the construction of social problems that result from chemical pollution (2005-2010). We investigated the dynamics of competition that create and define pollution as a social problem and entail its decline. News outlets are crucial for determining how an environmental issue emerges locally or nationally; this study used newspapers to highlight the potential of new outlets as a data source to analyze discourse variability, science-policy-media connections and the hydrosphere. Media coverage was based on a content analysis and textual data analysis of 75 articles. Analytical frameworks such as the Downs Model and the Public Arena Model (Hilgartner and Bosk, 1988) that consider time and stakeholders were tested to determine how human alteration of the hydrosphere can become a social problem and to analyze different communication strategies held by stakeholders. In terms of management, we described the temporal dynamics of the social problem based on the case study and considered an explanation of the selections. We considered the organization of particular stakeholders who define the social problem from its beginning to end by focusing on their discourses, relationships, decision-making and political choices, and scientific studies. Despite some biases, newspapers are useful for retrospectively evaluating the emergence of a social problem in the public arena by describing it through discourse and then understanding the temporal patterns of information. Despite uncertainties and information flow, decisions are made and science is translated to the public
Emeline Comby; Yves-François Le Lay; Hervé Piégay. How chemical pollution becomes a social problem. Risk communication and assessment through regional newspapers during the management of PCB pollutions of the Rhône River (France). Science of The Total Environment 2014, 482-483, 100 -115.
AMA StyleEmeline Comby, Yves-François Le Lay, Hervé Piégay. How chemical pollution becomes a social problem. Risk communication and assessment through regional newspapers during the management of PCB pollutions of the Rhône River (France). Science of The Total Environment. 2014; 482-483 ():100-115.
Chicago/Turabian StyleEmeline Comby; Yves-François Le Lay; Hervé Piégay. 2014. "How chemical pollution becomes a social problem. Risk communication and assessment through regional newspapers during the management of PCB pollutions of the Rhône River (France)." Science of The Total Environment 482-483, no. : 100-115.
Dans le cadre du tournant linguistique et discursif qu'ont connu les sciences sociales, l'analyse des textes et des paroles permet d'explorer les attitudes et les représentations tenues à l'égard de l'environnement, y compris des cours d'eau. Les attitudes liées aux paysages et aux risques peuvent être appréhendées dans leurs composantes cognitive, affective et pré-comportementale. Combinant l'analyse de contenu, la textométrie et des approches plus qualitatives, les méthodologies géo-discursives contribuent ainsi à prendre au mot la géographie.
Yves-François Le Lay. Editorial. Encrer les eaux courantes : la géographie prise au mot. Géocarrefour 2013, 3 -13.
AMA StyleYves-François Le Lay. Editorial. Encrer les eaux courantes : la géographie prise au mot. Géocarrefour. 2013; (1):3-13.
Chicago/Turabian StyleYves-François Le Lay. 2013. "Editorial. Encrer les eaux courantes : la géographie prise au mot." Géocarrefour , no. 1: 3-13.
Over the past century, the ecologically-diverse, braided Magra River in Italy has narrowed, incised, and lost many gravel bars due to the riparian vegetation encroachment following the decrease in bedload supply and channel degradation. Motivated by the European Water Framework Directive, river scientists and managers are beginning to plan projects to conserve and restore these dynamic mosaics of rare habitats and processes. To support this objective, a study was conducted to assess how braided rivers are perceived by different social groups in the area. In June, 2006, 127 people were surveyed using a photo-questionnaire consisting of ten photographs that depicted riverscapes with different proportions of water, vegetation, and bed material. Respondents were asked to score each photograph in terms of aesthetic value, beneficial uses, and river management needs. Results showed that the photographs depicting gravel bars were perceived as less aesthetically pleasing, so therefore they need an active management. However, these perceptions differed amongst groups of participants, reflecting their interests and objectives. This paper identifies a distance between scientific and popular attitudes and discusses implications for public participation, support for braided river restoration policy, and environmental education.
Yves-François Le Lay; Hervé Piégay; Anne Rivière-Honegger. Perception of braided river landscapes: Implications for public participation and sustainable management. Journal of Environmental Management 2013, 119, 1 -12.
AMA StyleYves-François Le Lay, Hervé Piégay, Anne Rivière-Honegger. Perception of braided river landscapes: Implications for public participation and sustainable management. Journal of Environmental Management. 2013; 119 ():1-12.
Chicago/Turabian StyleYves-François Le Lay; Hervé Piégay; Anne Rivière-Honegger. 2013. "Perception of braided river landscapes: Implications for public participation and sustainable management." Journal of Environmental Management 119, no. : 1-12.
Throughout the world before the 1970s, in-channel large wood (hereafter LW), was generally considered a nuisance or a hazard to be avoided because of the hydraulic effects and consequential associated risks that it could produce. LW was systematically removed from channels for a perceived benefit to human activities. Over the last four decades, LW has received an increasing interest among scientists who recognize it as a significant structural and functional component of aquatic ecosystems. Research in geomorphology has addressed LW characters and its effects on flow hydraulics, on channel and valley forms and their evolution, on the storage and transfer of sediment and organic matter, as well as on associated habitats for aquatic communities. After considering the space–time framework within which the wood dynamics can be studied, we highlight the LW effects on channel morphology and fluvial processes, the ecological and societal consequences of wood in rivers and implications in terms of river management and restoration. After centuries of wood removal, LW is now introduced in rivers for ecological improvement in some areas of North America, Europe, Australia, and Japan.
Yves-François Le Lay; H. Piégay; B. Moulin. 12.3 Wood Entrance, Deposition, Transfer and Effects on Fluvial Forms and Processes: Problem Statements and Challenging Issues. Treatise on Geomorphology 2013, 20 -36.
AMA StyleYves-François Le Lay, H. Piégay, B. Moulin. 12.3 Wood Entrance, Deposition, Transfer and Effects on Fluvial Forms and Processes: Problem Statements and Challenging Issues. Treatise on Geomorphology. 2013; ():20-36.
Chicago/Turabian StyleYves-François Le Lay; H. Piégay; B. Moulin. 2013. "12.3 Wood Entrance, Deposition, Transfer and Effects on Fluvial Forms and Processes: Problem Statements and Challenging Issues." Treatise on Geomorphology , no. : 20-36.