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Mobilité du phosphore et intervention agroenvironnementale en bassin versant agricole : Étude de cas du ruisseau au Castor, tributaire de la rivière Aux Brochets, Québec
| Content Provider | Semantic Scholar |
|---|---|
| Author | Michaud, Aubert R. Lauzier, Richard Laverdière, Marc R. |
| Copyright Year | 2005 |
| Abstract | 1. Institut de recherche et de developpement en agroenvironnement inc. (IRDA), 2700, rue Einstein, Sainte-Foy (Quebec) G1P 3W8, Canada *Auteur pour la correspondance : telephone : (418) 644-6884, telecopieur : (418) 644-6855, Courriel : aubert.michaud@irda.qc.ca 2. Direction regionale de la Monteregie, Secteur Est, ministere de l’Agriculture, des Pecheries et de l’Alimentation du Quebec Abstract, *A.R. Michaud 1, R.Lauzier 2 and M.R. Laverdiere 2. Phosphorus mobility and best management practices: Beaver Brook case study, Pike River, Quebec. Agrosol. 16 (1): 47-60. The mobility of phosphorus within Beaver Brook, a small agricultural watershed (11 km2), tributary to Pike River, was described through hydrometric and water quality monitoring in relation to production systems and landscape descriptors. In parallel to agri-environmental monitoring, best management practices were implemented throughout most hydrologically active areas of watershed, including systematic implementation of riparian buffers and catch basins along stream main channel, as well as nutrient and manure management plan updates. Despite an important inter-annual variability in hydrological conditions, covariance analysis of phosphorus concentration in surface water, using stream flow rate as covariate, indicated a 25% reduction in flow-weighted total P levels during peak runoff events from a reference period (1997-1999) to successive assessment periods 1999-2001 and 2001-2003. Improvement in water quality is linked to attenuation of peak surface runoff activity and breaks in hydrological connectivity between fields and stream. Resulting hypodermic flow and sedimentation of particular P is indebted to complementary action of riparian buffer strips and structural runoff management. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://irda.blob.core.windows.net/media/2328/michaud-et-al-2005_article_agrosol_mobilite_p_bv_castor.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
