| Titre | Agriculture actions to reduce phosphorus to Lake Erie |
| Télécharger | Téléchargement (publication entière) |
| |
| Licence | Veuillez noter que la Licence du gouvernement
ouvert - Canada remplace toutes les licences antérieures. |
| Auteur | Cushman, D |
| Source | Regional-scale groundwater geoscience in southern Ontario: an Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario open house; par Russell, H A J ; Ford, D; Priebe, E H; Commission géologique du Canada, Dossier public 8212,
2017 p. 11, https://doi.org/10.4095/299767  Accès
ouvert |
| Année | 2017 |
| Éditeur | Ressources naturelles Canada |
| Réunion | Ontario Geological Survey and Geological Survey of Canada groundwater geoscience open house; Guelph; CA; mars 1-2, 2017 |
| Document | dossier public |
| Lang. | anglais |
| DOI | https://doi.org/10.4095/299767 |
| Media | en ligne; numérique |
| Référence reliée | Cette publication est contenue dans Regional-scale groundwater geoscience in southern Ontario: an Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario open house |
| Formats | pdf |
| Province | Ontario |
| SNRC | 30L; 40G; 40I; 40J/01; 40J/02; 40J/03 |
| Région | Lac Érié |
| Lat/Long OENS | -84.0000 -78.5000 43.0000 41.5000 |
| Sujets | eaux de surface; lacs; eaux lacustres; gestion des ressources; planification; qualité de l'eau; substances polluantes; phosphore; algues; plages; milieu côtièr; géochimie des eaux lacustres; oxygène; eaux
de ruissellement; sols; érosion; Agriculture; Changement climatique; géologie de l'environnement; Nature et environnement |
| Programme | Géoscience des eaux souterraines , Aquifer Assessment & support to mapping |
| Diffusé | 2017 02 22 |
| Résumé | (disponible en anglais seulement)
For more than a decade, toxic and nuisance algal blooms in Lake Erie have increased in frequency, and the summer of 2015 saw the largest documented algal bloom
in the lake's history. Blooms threaten drinking water quality, fish populations, beach quality, coastal recreation and the overall health of the lake. In addition, when algae die and decompose, hypoxic conditions can be created, meaning there is a
lack of oxygen in the water. In 2012, hypoxic conditions were responsible for tens of thousands of dead fish washing up on a 40-kilometre stretch of shoreline between the communities of Erieau and Port Stanley in Ontario. The increased occurrence of
harmful algal blooms in Lake Erie is influenced by many factors, including nutrients, climate change and invasive species such as zebra mussels. Phosphorus is the primary nutrient driving increased algal blooms in the lake and comes from multiple
sources, both urban and rural. After decades of work on major sources, non-point sources are now the majority of phosphorus entering Lake Erie. The challenge is significant, but with coordinated action there is hope for the lake's future.
However,
with the recent rise in blooms, Canada and the United States recognized the need for a new approach to action, and in February 2016 agreed to a 40 per cent reduction target for phosphorus entering the Central and Western basins of Lake Erie. Federal
and provincial ministries are collaborating to develop an Action Plan for Lake Erie to Achieve Phosphorus Reductions from Canadian Sources. Governments cannot do this alone. Additional actions from all sectors and communities across the Lake Erie
basin are going to be needed to achieve our goals. A draft is currently out for consultation soliciting actions from all sectors.
The Ministry of Agriculture, Food and Rural Affairs (OMAFRA) focus is on rural communities and Ontario's agriculture
and food systems. Rural and agricultural sources of phosphorus include soil erosion from fields and nutrient runoff from manure, fertilizer and other soil amendments. OMAFRA has been studying the effectiveness of management practices in reducing
environmental impacts and promoting environmental planning for decades. To support the work on phosphorus reduction OMAFRA reviewed the available information to determine which practices have the greatest potential for reductions and to identify our
scientific gaps. Preliminary conclusions include the need to: improve soil health through practices like crop rotation, reduced tillage, cover crops; carefully manage nutrients including the appropriate timing and application of nutrients; and select
practices that are effective in the non-growing season and heavy storm events when the majority of the loss can occur. Current science also indicates that a multi-barrier approach that uses multiple BMPs is most effective at minimizing phosphorus
loss from fields through runoff and tile drainage. |
| Sommaire | (Résumé en langage clair et simple, non publié)
Procès-verbaux pour la géoscience des eaux souterraines à échelle régionale Organisée par la Commission géologique de l'Ontario, la Commission
géologique du Canada et les géoscientifiques de Conservation Ontario. La journée portes ouvertes est prévue pour 2017-03-01 et 02. L'objectif est l'engagement du public et la diffusion de la géoscience dans le sud de l'Ontario au cours de la dernière
année. |
| GEOSCAN ID | 299767 |
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