Rapport sur l'étude des pollutions d'origine diffuse dans le bassin lémanique PDF Download

Author: Commission internationale pour la protection des eaux du Léman contre la pollution. Groupe de travail Pollution d'origine diffuse
Publisher:
ISBN:
Category :
Languages : fr
Pages : 254

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Author: Commission internationale pour la protection des eaux du Léman contre la pollution. Groupe de travail Pollution d'origine diffuse
Publisher:
ISBN: 9789290870012
Category : Phosphorus
Languages : fr
Pages : 119

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Analyse: Les recherches ont débuté en 1983 et se sont terminées en 1987. Sept sites témoins ont été retenus dont trois sur territoire vaudois: Rolle, Cully et Bex.

Author: Guilhem Bourrié
Publisher: John Wiley & Sons
ISBN: 1119571855
Category : Science
Languages : en
Pages : 203

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This book provides the most up-to-date knowledge on water in soils and applications for the best use of our water resources. It first addresses the influence of soils on water quality, which is linked to rock weathering, soil formation, acidity and waterlogging. Here, the constituents of soils – such as clay minerals and iron oxides – play a major role. These modifications also have an impact on biogeochemical processes at the global scale, including the carbon cycle and the composition of the atmosphere. Secondly, this book discusses soil salinity, alkalinity and sodification in climates spanning from Mediterranean to arid. Here, water quality results from the concentration of solutes by evaporation and the transpiration of plants. The proper management of irrigation both protects soils against acidification and ensures sustainable agroecological development, while improper management leads to soil degradation and groundwater overexploitation. Lastly, the book describes how excess transfer of phosphorus in lakes results from a cascade of liberation and immobilization in the structure of the surrounding landscape. This leads to a general integrative method to limit eutrophication and restore the quality of water bodies.

Author:
Publisher:
ISBN:
Category : Lake ecology
Languages : en
Pages : 628

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Author:
Publisher:
ISBN:
Category : Agricultural ecology
Languages : en
Pages : 586

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Author: Gianluigi Giussani
Publisher:
ISBN:
Category : Eutrophication
Languages : en
Pages : 628

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Author: H. Tunney
Publisher: Cabi
ISBN:
Category : Science
Languages : en
Pages : 488

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Eutrophication, caused by phosphorus enrichment, is not a new environmental problem. The persistence of eutrophication in an era when many point-source phosphorus inputs have been curtailed has turned the focus of attention to agricultural phosphorus. A workshop was held in Ireland in 1995 to discuss factors controlling phosphorus losses to water from agriculture. This book presents the proceedings of the workshop and consists of 18 chapters by the invited speakers and three chapters with the 45 poster papers displayed at the workshop.

Author: Scott A. Elias
Publisher: Elsevier
ISBN: 0080958494
Category : Science
Languages : en
Pages : 303

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Advances in Quaternary Entomology addresses the science of fossil insects by demonstrating their immense contribution to our knowledge of the paleoenvironmental and climatological record of the past 2.6 million years. In this comprehensive survey of the field, Scott A. Elias recounts development of scholarship, reviews the fossil insect record from Quaternary deposits throughout the world, and points to rewarding areas for future research. The study of Quaternary entomology is becoming an important tool in understanding past environmental changes. Most insects are quite specific as to habitat requirements, and those in non-island environments have undergone almost no evolutionary change in the Quaternary period. We therefore can use their modern ecological requirements as a basis for interpreting what past environments must have been like. - Describes and identifies principal characteristics of fossil insect groups of the Quaternary period - Ties Quaternary insect studies to the larger field of paleoecology - Offers global coverage of the subject with specific regional examples - Illustrates specific methods and procedures for conducting research in Quaternary Entomology - Offers unique insight into overlying trends and broader implications of Quaternary climate change based on insect life of the period

Author: Christian Wille
Publisher: transcript Verlag
ISBN: 3839426502
Category : Social Science
Languages : en
Pages : 385

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Spatial and identity research operates with differentiations and relations. These are particularly useful heuristic tools when examining border regions where social and geopolitical demarcations diverge. Applying this approach, the authors of this volume investigate spatial and identity constructions in cross-border contexts as they appear in everyday, institutional and media practices. The results are discussed with a keen eye for obliquely aligned spaces and identities and relinked to governmental issues of normalization and subjectivation. The studies base upon empirical surveys conducted in Germany, France, Belgium and Luxembourg.

Author: Professor Doris Wastl-Walter
Publisher: Ashgate Publishing, Ltd.
ISBN: 1409490165
Category : Social Science
Languages : en
Pages : 728

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This comprehensive volume brings together a multidisciplinary team of leading scholars to provide an authoritative, state-of-the-art review of all aspects of borders and border research. It is global in scope and embraces the more traditional strands of the field including geopolitics, migration and territorial identities, and also recently emerging topics such as the role of borders in a seemingly borderless world; creating neighbourhoods, and border enforcement in the post-9/11 era.