Bibliothèque Électronique Lac Saint-Pierre

Monitoring the State of the St. Lawrence River - Toxic contamination in sediments Lake Saint-Pierre: Last Stop before the Estuary

Pelletier, M. (2005). Monitoring the State of the St. Lawrence River - Toxic contamination in sediments Lake Saint-Pierre: Last Stop before the Estuary. [Publication gouvernementale]

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Particles eroded from the bed and banks of the St. Lawrence River and from the watercourses feeding into it remain suspended in the water for a fairly long time before settling on the bottom to form sediment. These successive layers of accumulated sediment constitute a veritable historical record of the natural and anthropogenic events that have shaped the St. Lawrence drainage basin. Particles can act as traps for passing metals that may be toxic to benthic organisms. In addition, the industrial, agricultural and urban effluent discharges that mix with the particles contain organic material that could potentially be contaminated by pesticides, hydrocarbons or polychlorinated biphenyls. Lake Saint-Pierre is a favourable environment for sediment accumulation. It is also, and has been for decades, subject to a great diversity of different sources of contamination. Thus, the sediments in Lake Saint-Pierre tell the story of the freshwater St. Lawrence. Sheltered among its wetlands and sediment layers are a whole host of aquatic and benthic organisms. Lake Saint-Pierre is tremendously rich in biodiversity and its environment is especially dynamic, one that is subject to major water-level fluctuations. If we are to preserve this special place, though, we must first understand it.

Type de document: Publication gouvernementale
Nombre de pages: 8
Éditeur: Minister of the Environment et Ministre du Développement durable, de l’Environnement et des Parcs du Québec
Lieu de publication: Sainte-Foy
Statut du texte intégral: Public
Mots-clés libres: Toxic contamination, Sediments, Lake Saint-Pierre, Metals, Organic material, Benthic organisms, Freshwater
Sujets: 1. Laboratoire de développement durable > 1.5. Société, qualité de vie, santé, sécurité
2. Milieu physique > 2.4. Hydrologie
6. Milieu humain
8. Impacts et monitoring
8. Impacts et monitoring > 8.1. Qualité de l’eau
8. Impacts et monitoring > 8.2. Études de suivi
Date de dépôt: 09 mai 2017 15:30
Dernière modification: 09 mai 2017 15:30
ISBN: 0-662-42147-7

Gestion Actions (Identification requise)

Dernière vérification avant le dépôt Dernière vérification avant le dépôt
Coopérative de solidarité de la Réserve de la biosphère du Lac-Saint-Pierre
Concepteur de la BELSP : André Barabé, Ph. D.