English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/49416
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Otros títulosRisk of Water Contamination by Phosphorus (IROWC-P)
AutorBochove, E. van; Thériault, G.; Denault, J. T.; Dechmi, Farida ; Rousseau, A. N.; Allaire, Suzanne E.
Fecha de publicación2010
EditorAgriculture and Agri-Food Canada publication
Citaciónvan Bochove E, Thériault G, Denault JT, Dechmi F, Rousseau AN, Allaire SE. Phosphorus. In: Eilers W, MacKay R, Graham L, Lefebvre A (eds.), Environmental Sustainability of Canadian Agriculture (Agri-Environmental Indicator Report Series ; Report n. 3), Agriculture and Agri-Food Canada, Ottawa, 2010, Chapter 13: pp 87-93,
ResumenPhosphorus (P) is an important nutrient for plant and animal growth. However, additions of P to the land as livestock manure and inorganic fertilizer may lead to an increased risk of soil P saturation and resulting movement of P to water bodies. Excessive amounts of P in surface water contributes to eutrophication of rivers and lakes and to Cyanobacteria blooms. These result in decreased water quality and limitations on water use. The Risk of Water Contamination by Phosphorus (IROWC-P) Indicator was developed to assess the trends over time for the risk of surface water contamination by P from Canadian agricultural land at the watershed scale. Overall risk of water contamination by P is increasing in Canada. Increases in livestock production and the use of mineral fertilizers repeatedly created regional P surpluses between 1981 and 2006. The wide range of soil types across Canada have different characteristics for retaining nutrients such as P and therefore some soils are better able than others to sustain intensive agriculture. Surface runoff, deep drainage and soil erosion by water on agricultural land contribute significantly to the risk of P contamination of surface water in eastern Canada. In western Canada, surface runoff seems to be the major factor contributing to P transport. Local implementation of nutrient management plans, regulations, conservation practices and beneficial management practices (BMPs) have considerably decreased the P surplus in some areas. However, cumulative P surpluses over time continue to enrich soil P levels. Increased efforts at controlling both P sources and transport are required to reduce the risk of P loss to water and prevent surface water eutrophication and algal blooms.
Descripción7 Pags., 7 Figs.
Aparece en las colecciones: (EEAD) Libros y partes de libros
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
DechmiF_WatQual-13Phosphorus_2011.pdf428,57 kBAdobe PDFVista previa
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.