Legacy Phosphorus Across Canada: Insights from a 60-Year Dataset
| dc.contributor.author | Malik, Lamisa | |
| dc.contributor.author | Byrnes, Danyka Kimberly | |
| dc.contributor.author | McLeod, Meghan | |
| dc.contributor.author | Chang, Shuyu | |
| dc.contributor.author | Van Meter, Kimberly | |
| dc.contributor.author | Basu, Nandita B. | |
| dc.date.accessioned | 2023-06-15T19:28:35Z | |
| dc.date.available | 2023-06-15T19:28:35Z | |
| dc.date.issued | 2023-05-15 | |
| dc.description.abstract | Human activities over decades of agriculture and urbanization have altered phosphorus (P) cycling, posing a threat to water quality and ecosystem function. Algal blooms have become a pervasive problem in both small and large waterbodies across Canada. Despite concerted efforts to reduce P loading to surface waters, there has yet to be a noticeable improvement in water quality. This can be attributed to the accumulation of legacy P in the landscape as a result of excessive use of synthetic fertilizers and the production of livestock manure. These legacy P can reach the waterbodies decades after implementing P management practices. Therefore, to better understand long-term P dynamics and their drivers, it is crucial to develop long-term datasets of P inputs and outputs. We developed a 60-year (1961–2021), 250-meter grid resolution data of P components and P surplus across Canada. P surplus is the difference between P inputs (fertilizer inputs, livestock manure, detergent, and human waste) and non-hydrological P output (crop uptake). Our result shows the different drivers of P surplus across Canada. In Ontario and Quebec, the P surplus decreased from nutrient regulation programs in 1981 and subsequently rebounded in 2006 due to an increase in P fertilizer use. In prairie provinces, low P inputs and increasing crop yields have led to the mining of the P stores in the soils. This new, longer dataset will improve our understanding of long-term P dynamics and allow for explicit consideration of the impacts of legacy P on environmental outcomes. | en |
| dc.description.sponsorship | This research was undertaken thanks, in part, with support from the Global Water Futures Program funded by the Canada First Research Excellence Fund (CFREF). | en |
| dc.identifier.uri | http://hdl.handle.net/10012/19545 | |
| dc.language.iso | en | en |
| dc.publisher | University of Waterloo | en |
| dc.relation.ispartofseries | Global Water Futures; | |
| dc.subject | GWF ASOM 2023 | en |
| dc.subject | hydrology | en |
| dc.subject | nutrient | en |
| dc.subject | water quality | en |
| dc.subject | legacy | en |
| dc.subject | phosphorus | en |
| dc.subject | Canada | en |
| dc.title | Legacy Phosphorus Across Canada: Insights from a 60-Year Dataset | en |
| dc.type | Conference Poster | en |
| dcterms.bibliographicCitation | Malik, L; Byrnes, D; McLeod, M; Chang, S; Van Meter, K & Basu, N. (2023) Legacy Phosphorus Across Canada: Insights from a 60-Year Dataset. Global Water Futures (GWF) Annual Open Science Meeting Conference. University of Waterloo. | en |
| uws.contributor.affiliation1 | Faculty of Engineering | en |
| uws.contributor.affiliation2 | Civil and Environmental Engineering | en |
| uws.peerReviewStatus | Unreviewed | en |
| uws.scholarLevel | Graduate | en |
| uws.typeOfResource | Text | en |