Design and analysis of an urban retention pond database

8 pagesInternational audienceIn conjunction with the urban development in the Ile-de-France region numerous retention ponds were created in the seventies. Because of their number the knowledge concerning the behaviour of these ponds remains quite scarce and it is a weakness for their optimal management. This paper presents a database related to retention ponds in the Ile-de-France region, which gathers all the available data concerning their design, their behaviour in their catchment, their water quality and their maintenance. The objective of this database is precisely to improve their knowledge and to finally help in their management. Data from 55 ponds are presently included in the database. From these data it is possible to infer a high pollution retention potential of the ponds. Despite the heterogeneity of the monitoring strategies, significant relations between the water quality in the ponds and the occupation of the catchment were established.Lors de la création des villes nouvelles en région Ile de France dans les années 70, les bassins de retenue en eau ont été abondamment utilisés pour contrôler l'évacuation des eaux pluviales. Toutefois, en raison de leur nombre, la connaissance du comportement de ces bassins reste limitée, ce qui constitue une faiblesse pour leur gestion optimale. Ce texte présente une base de donnée relative à ces bassins en eau. Elle rassemble toutes les informations disponibles relatives à leur conception, leur fonctionnement, la qualité de leurs eaux et leur entretien. L'objectif de cette base de données est d'améliorer la connaissance de ces plans d'eau et ultérieurement d'aider à leur gestion. Les données de 55 bassins sont actuellement rentrées dans la base de données. A partir de ces données, on peut estimer un potentiel de dépollution élevé. Par ailleurs, des relations significatives entre la qualité des eaux et l'occupation du bassin versant ont été mises en évidence

Conflitos e contradições no município de Ferros: o mineroduto Manabi

With the Brazilian government's re-primarization of the economy and the interests of the capitalists, including the exponential growth of the price of iron ore in the global market, the River Santo Antônio watershed became the target of mega-mining projects. One of these projects belongs to the Manabi company, which, since 2012, intends to extract ore in the region and transport it through a pipeline, to a port in Espírito Santo state’s coast, from where it would be exported. The focus of the present article is to analyze the hierarchical social relations in some communities in Ferros county, which turned to get more complex since Manabi announced they intentions to build its pipeline there

Aspectos de qualidade de agua en bacias de retention urbanas

International audienceO trabalho apresenta resultados de monitoramento de qualidade da água em cerca de 50 bacias de retenção francesas.Inicialmente é feita uma revisão sobre estudos ecológicos em bacias de retenção, destacando-se, em escala internacional, acarência de dados específicos sobre a qualidade da água destes novos sistemas hídricos. A seguir são discutidos separadamenteos principais parâmetros de qualidade da água nas bacias estudadas, constatando-se o predomínio de condições satisfatóriasna maioria das bacias, muito embora associadas a uma alta produtividade primária dos ambientes aquáticos. Não seobserva um padrão homogêneo de qualidade da água entre as bacias pesquisadas. As informações decorrentes deste estudo,com as necessárias considerações de particularidades, sobretudo climáticas, podem ser extrapoladas para a realidade brasileira,tendo em vista a crescente utilização destes sistemas alternativos de drenagem urbana em nosso país

Conflitos e contradições no município de Ferros: o mineroduto Manabi

With the Brazilian government's re-primarization of the economy and the interests of the capitalists, including the exponential growth of the price of iron ore in the global market, the River Santo Antônio watershed became the target of mega-mining projects. One of these projects belongs to the Manabi company, which, since 2012, intends to extract ore in the region and transport it through a pipeline, to a port in Espírito Santo state’s coast, from where it would be exported. The focus of the present article is to analyze the hierarchical social relations in some communities in Ferros county, which turned to get more complex since Manabi announced they intentions to build its pipeline there

Design and analysis of an urban retention pond database

8 pagesInternational audienceIn conjunction with the urban development in the Ile-de-France region numerous retention ponds were created in the seventies. Because of their number the knowledge concerning the behaviour of these ponds remains quite scarce and it is a weakness for their optimal management. This paper presents a database related to retention ponds in the Ile-de-France region, which gathers all the available data concerning their design, their behaviour in their catchment, their water quality and their maintenance. The objective of this database is precisely to improve their knowledge and to finally help in their management. Data from 55 ponds are presently included in the database. From these data it is possible to infer a high pollution retention potential of the ponds. Despite the heterogeneity of the monitoring strategies, significant relations between the water quality in the ponds and the occupation of the catchment were established.Lors de la création des villes nouvelles en région Ile de France dans les années 70, les bassins de retenue en eau ont été abondamment utilisés pour contrôler l'évacuation des eaux pluviales. Toutefois, en raison de leur nombre, la connaissance du comportement de ces bassins reste limitée, ce qui constitue une faiblesse pour leur gestion optimale. Ce texte présente une base de donnée relative à ces bassins en eau. Elle rassemble toutes les informations disponibles relatives à leur conception, leur fonctionnement, la qualité de leurs eaux et leur entretien. L'objectif de cette base de données est d'améliorer la connaissance de ces plans d'eau et ultérieurement d'aider à leur gestion. Les données de 55 bassins sont actuellement rentrées dans la base de données. A partir de ces données, on peut estimer un potentiel de dépollution élevé. Par ailleurs, des relations significatives entre la qualité des eaux et l'occupation du bassin versant ont été mises en évidence