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Registros recuperados: 6
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Animal-based agriculture, phosphorus management and water quality in Brazil: options for the future Scientia Agricola
Shigaki,Francirose; Sharpley,Andrew; Prochnow,Luís Ignácio.
Eutrophication has become a major threat to water quality in the U.S., Europe, and Australasia. In most cases, freshwater eutrophication is accelerated by increased inputs of phosphorus (P), of which agricultural runoff is now a major contributor, due to intensification of crop and animal production systems since the early 1990s'. Once little information is available on the impacts of Brazilian agriculture in water quality, recent changes in crop and animal production systems in Brazil were evaluated in the context of probable implications of the fate of P in agriculture. Between 1993 and 2003, there was 33% increase in the number of housed animals (i.e., beef, dairy cows, swine, and poultry), most in the South Region (i.e., Paraná, Rio Grande do Sul, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diffuse pollution; Eutrophication; Poultry production; Swine production; Surface runoff.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000200013
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Despite great expectations in the Seine River Basin, the WFD did not reduce diffuse pollution ArchiMer
Bouleau, Gabrielle; Barbier, Rémy; Halm-lemeille, Marie-pierre; Tassin, Bruno; Buchs, Arnaud; Habets, Florence.
European stakeholders engaged in combatting the eutrophication of the North Sea welcomed three Water Framework Directive innovations: a more holistic approach to quality, the binding nature of WFD objectives, and greater public participation. Twenty years later, however, there has been a disappointing amount of progress in the reduction of diffuse pollution. In the Seine River Basin, the amount of livestock rearing is low; yet the basin is subject to significant diffuse pollution due to agriculture. This paper reports our study of this case; we examine the literature on WFD implementation policy in order to identify the physical and social causes of this failure to reduce diffuse pollution. We show that the nitrates, phosphorus, and pesticides that affect...
Tipo: Text Palavras-chave: Diffuse pollution; Policy implementation; Output legitimacy; Regulatory space; Intensive agriculture; WFD; Seine River Basin; France.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00645/75668/76535.pdf
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Eutrophication: A new wine in an old bottle? ArchiMer
Le Moal, Morgane; Gascuel-odoux, Chantal; Menesguen, Alain; Souchon, Yves; Etrillard, Claire; Levain, Alix; Moatar, Florentina; Pannard, Alexandrine; Souchu, Philippe; Lefebvre, Alain; Pinay, Gilles.
Eutrophication is one of the most common causes of water quality impairment of inland and marine waters. Its best-known manifestations are toxic cyanobacteria blooms in lakes and waterways and proliferations of green macro algae in coastal areas. The term eutrophication is used by both the scientific community and public policy-makers, and therefore has a myriad of definitions. The introduction by the public authorities of regulations to limit eutrophication is a source of tension and debate on the activities identified as contributing or having contributed decisively to these phenomena. Debates on the identification of the driving factors and risk levels of eutrophication, seeking to guide public policies, have led the ministries in charge of the...
Tipo: Text Palavras-chave: Eutrophication; Nitrogen; Phosphorus; Algae bloom; Land-sea continuum; Diffuse pollution.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00456/56734/58551.pdf
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Mechanisms to Improve Integrative Research at the Science-Policy Interface for Sustainable Catchment Management Ecology and Society
Macleod, Christopher (Kit) J. A.; North Wyke Research, Devon, UK; kit.macleod@bbsrc.ac.uk; Blackstock, Kirsty L.; ;; Haygarth, Phil M.; ;.
Greater integration between researchers and policy makers is required to provide an evidence base that is transparent, integrated, and adaptive to support the complexities of sustainable catchment management. Opening-up and closing-down mechanisms are equally important in creating and establishing such an evidence base. We provide examples of both types based on our recent research and knowledge-transfer activities at the science-policy interface. Through our coordination role for the United Kingdom government we provide opening up physical and virtual forums for researchers and government science and policy staff to learn about and assess the gaps and uncertainties of the evidence base. Closing-down mechanisms are vital to policy cycles, in that they...
Tipo: Peer-Reviewed Insight Palavras-chave: Catchment; Diffuse pollution; Evidence base; Integrative; Science-policy; UK..
Ano: 2008
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Modelling the mitigation mix: faecal microbes, economic constraints and sustainable land management AgEcon
Butler, Allan J.; Oliver, David; Chadwick, Dave; Fish, Rob; Winter, Michael; Hodgson, Chris; Heathwaite, Louise.
Conventional livestock farming provides consumers with cheap and reliable sources of milk and meat. Yet the inevitable by-product, i.e. livestock faecal matter, represents a potential source of pathogenic microorganisms. This paper applies the Faecal Indicator Organisms Costing Assessment Tool (FIOCAT), which was designed as part of the RELU project ‘sustainable and holistic food chains for recycling livestock waste to land’, to examine the costs associated with mitigation methods that may inhibit pathogenic transfers to water. FIO-CAT is comprised of three interrelated models: the economic dairy management (EDM) model, the farm business survey (FBS) model and the manure, infrastructure and environment (MIE) model. Specifically, it models dairy, and cattle...
Tipo: Conference Paper or Presentation Palavras-chave: Cost mitigation; Cost tool; Microbial organisms; Whole farm modelling; Diffuse pollution; Land Economics/Use.
Ano: 2009 URL: http://purl.umn.edu/50939
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Phosphorus dynamics in a highly polluted urban drainage channel-shallow reservoir system in the Brazilian semiarid Anais da ABC (AABC)
ARAÚJO,GERMÁRIO M.; LIMA NETO,IRAN E.; BECKER,HELENA.
Abstract: This paper investigates phosphorus dynamics in a highly polluted system composed of a drainage channel followed by a shallow reservoir in the city of Fortaleza, Brazilian semiarid. During the dry season, significant non-point source loads of total phosphorus originated from residences unconnected to sewers were identified along the channel, resulting in an increasing flow rate of untreated sewage towards the reservoir. During the rainy season, as a consequence of dilution, phosphorus concentrations decreased by about 5-fold. The results also revealed that the reservoir was acting similarly to a waste stabilization pond, with phosphorus removal efficiency of about 33%. Assuming one-dimensional flow for the channel and complete mixing for the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diffuse pollution; Eutrophication; Nutrients; Semiarid; Urbanization; Water quality modeling.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500902
Registros recuperados: 6
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