List of projects
name description link committees Zone
Proceed with the study of the use of the shipping channel by fish

This research project seeks to describe and understand the use of the shipping channel by St. Lawrence fish populations. Its objective is to characterize the abundance and health of the fish that frequent the shipping channel.

The data collected can also be viewed using the Biodiversity application on the St. Lawrence Global Observatory website.

backgrounder Sustainable use
  • Quebec City (45.18978,-74.295044)
  • Quebec City (45.884273,-73.259583)
  • Quebec City (45.402307,-73.818512)
  • Quebec City (46.204547,-72.820129)
Richelieu’s "Corridor Vert et Bleu"

This project consists of creating an “ecological corridor” on the entire Richelieu River watershed, that is, a continuous strip of vegetation (trees, shrubs and native grasses) along the banks that can filter and thereby reduce nonpoint source pollution while serving as a wildlife movement corridor. To learn more, you can read the brochure for this project.

backgrounder Improved water quality
  • Lake Saint-Pierre (45.460833,-73.279167)
Develop agricultural water courses on the coastline in the Lac Saint-Pierre flood plain

The purpose of this project is to continue to improve fish habitat in the flood plains of Lac Saint Pierre by restoring areas with high habitat potential and lower agricultural potential. Since 2003, eight hectares of habitat have been restored through an approach that is sensitive to the coexistence of agriculture and wildlife. Ten water courses, in the Lanaudière and Centre-du-Québec regions, have been developed.

backgrounder Improved water quality
  • Lac Saint-Pierre (46.15417,-72.70139)
  • Lac Saint-Pierre (46.11917,-73.09778)
Document riverine inputs of organic carbon and nutrients into the marine estuary in relation to hypoxia and acidification

This project, which is being carried out upstream in the St. Lawrence, involves studying the effects of inputs of organic carbon and nutrients (phosphorus and nitrogen) associated with agricultural activities on the ecosystem of the marine estuary of the St. Lawrence.

Water quality measurement stations are located at the outlet of Lake Ontario, at Wolfe Island, at the mouth of the Ottawa River (Carillon) and at Quebec City.

backgrounder Improved water quality
  • Marker 3 (46.766676,-71.241531)
  • Carillon (45.573437,-74.379845)
  • Wolfe Island (44.190574,-76.344109)
Improve knowledge about pathogenic organisms from agricultural sources found in tributaries of Lac Saint-Pierre

The purpose of this project is to assess the risk of contamination of the water in Lac Saint Pierre by pathogenic organisms that flow into it from the tributaries and to study the relationships between the indicator organisms or pathogens detected in the water samples and the agricultural contamination sources. This is achieved by monitoring concentrations of the E. coli indicator bacteria in the river upstream and downstream of the lake, as well as in the tributaries.

backgrounder Improved water quality
  • Lake Saint-Pierre (46.204132,-72.811083)
Use the effects of harmful and toxic algae as indicators for monitoring the quality and eutrophication of the water

This project involves studying the long-term effects of toxic algae on the ecosystem, identifying toxic algae, and determining the environmental factors influencing their impact. It also includes developing detection and evaluation tools to assess toxic effects on exposed organisms and using algae as indicators for monitoring water quality and eutrophication.

backgrounder Improved water quality
  • Lake Saint-Louis (45.390735,-73.813705)
  • Lake Saint-Pierre (46.20222,-72.82417)
Develop a toxicity test to assess the sediments in the brackish water zone of the St. Lawrence

The purpose of this project is to determine which toxicity tests should be used to evaluate the potential impact of dredged or deposited sediments in the brackish water zone of the St. Lawrence, that is, downstream of Île d’Orléans.

backgrounder Improved water quality
  • Île Madame (46.972815,-70.7868)
Document the presence of pharmaceutical products in municipal effluents in the Montreal region and assess their effect on aquatic fauna

This project involves a series of research studies examining the impact of discharges of pharmaceutical substances on the environment and human health, given that the discharge of urban effluents constitutes a major source of pollution for the river, and the Montreal purification plant alone creates half of them.

backgrounder Improved water quality
  • Lake Saint-Pierre (45.7025,-73.45639)
Document the presence of pharmaceutical and personal care products in the St. Lawrence and selected tributaries

This project consists of pooling and jointly interpreting data on 44 different substances measured at 11 sampling stations located between the Ottawa River and Lévis. The goal of the project is to interpret the measured concentrations of each of these products and gain a better understanding of the concentrations of pharmaceutical and personal care products in the river.

backgrounder Improved water quality
  • Trois-Rivières (46,807187,-71,181906)
  • Montreal (45,563264,-74,392799)
Develop a risk assessment project for the environment and health related to urban effluents in the Quebec City region

The purpose of this project is to assess the risks that municipal effluents, including those from Quebec City and Lévis, have on the ecosystem and on human health. In the first phase, a multi-disciplinary team will be created, and in the second phase, the team will study the toxic effects of effluents on aquatic wildlife and possibly on fish-eating wildlife (mammals and birds) and humans.

backgrounder Improved water quality
  • Quebec City (46.78243,-71.218529)
Combine tools for environmental prediction and state of the St. Lawrence monitoring and apply them to mapping the water quality of Lac Saint-Pierre

The purpose of this project is to combine the data of the Numerical Environmental Prediction and State of the St. Lawrence Monitoring groups to produce information (data, maps, indicators, etc.) that reflects the state of the contamination of Lac Saint Pierre by pesticides. The data will serve to identify the areas most affected by contamination in Lac Saint Pierre and to review the locations of sampling sites in the lake as needed and adjust the sampling plan.

backgrounder Improved water quality
  • Lac Saint-Pierre (46.213576,-72.815323)
Assess the ecotoxicological risk of the round goby in the St. Lawrence River in terms of the impact of invasive species on the trophic transfer of contaminants

The purpose of this project is to quantify the ecotoxicological risk represented by the round goby in order to assess the degree to which it contributes to the transfer of contaminants in the food chain. Researchers will assess the concentrations of contaminants (conventional and emerging) found in sediment and fish at about 10 sampling stations along Montreal’s effluent plume. They will then be able to assess the risk of contamination to predators of the round goby.

backgrounder Improved water quality
  • Plume of Montreal's effluent (45.582929,-73.476906)
Assess sediment dynamics and contamination levels in the wetlands of Lac Saint-Pierre

This project involves studying the sediment beds of the wetlands of Lac Saint-Pierre. The sedimentation rate and contamination level of the various layers of sediment will provide information on changes over time in environmental and anthropogenic pressures on these sensitive environments. This project will evaluate the impact of municipal and industrial wastewater, agricultural inputs, water level variations, dredging, and climate change. The data will provide essential elements for better understanding the dynamics of some of the most important habitats in the St. Lawrence ecosystem.

backgrounder Improved water quality
  • Marker 1 (46.191022,-72.852189)
Set up a round table on lac Saint-Pierre

This project will look at several previously-raised factors that could explain the deterioration of the lac Saint-Pierre ecosystem, including the over-exploitation of the perch resource, the impoverishment of water quality and habitats, benthic cyanobacteria, cormorant predation and competition for resources between indigenous and introduced species (round goby) in the lake. The project will also consider new factors, such as hydroclimatic conditions, parasites, pesticides and emerging contaminants.

Improved water quality
  • Lac Saint-Pierre (46.195042,-72.833862)
Participate in the creation of model interventions for the conservation of biodiversity in the agricultural setting

This project aims to carry out model interventions and restore habitats in an area of the south shore of Lake Saint-Pierre to make this a model of best practices for agriculture and environmental protection.

The expected results are the reduction of non-point source pollution, the improvement of water quality, and the improvement of the habitats of many wildlife species (birds and fish), including Yellow Perch, throughout the Lake Saint-Pierre watershed.

backgrounder Biodiversity conservation
  • Baie-du-Febvre (46.141426,-72.720909)
Assess the impact of climate change on high marshes in the freshwater estuary and develop strategies for protecting species in precarious situations

This project involves documenting changes in the marshes of the freshwater estuary of the St. Lawrence through an in-depth study of four sites to identify the primary factors responsible for the erosion of the marshes. The results of this project will make it possible to adapt strategies for protecting plant species in precarious situations by taking into account the impact of climate change.

backgrounder Biodiversity conservation
  • Quebec City (46.804995,-71.198673)
Analyze the outcomes identified using existing indicators and develop new indicators for the impact of climate change on ecosystems

This project involves quantifying the effect of climate change on the fluvial ecosystem using biological indicators that have been designed to test various St. Lawrence flow regulation plans. These indicators will be refined and reused under new flow and water temperature conditions corresponding to various hydroclimatological scenarios. This will lead to improved knowledge of the effects of climate change on biodiversity in various segments of the fluvial section of the St. Lawrence, from Lac Saint-Louis to Trois-Rivières.

backgrounder Biodiversity conservation
  • Varennes, Boucherville from lake Saint-Louis to Laviolette bridge (45.68195,-73.446693)
Evaluate the effects of invasive exotic fish on freshwater mussels indigenous to the St. Lawrence

The purpose of this research project is to evaluate the hypothesis that the round goby acts as an “impostor” host for the larvae of certain indigenous mussel species and impairs their recruitment and dispersal.

Researchers sampled two species of mussels common to the St. Lawrence River, namely the eastern elliptio and the eastern lampmussel, at Trois-Rivières and Grondines. These adult mussels provided the larvae required for the laboratory experiments. Round goby were also sampled at various sites, including at Île Verte and at the mouth of the Chateauguay River, to determine which mussel species have adopted this invasive fish species as a host for their larvae.

backgrounder Biodiversity conservation
  • Marker 4 (45.95528,-73.66917)
  • Marker 3 (45.64056,-73.775)
  • Marker 2 (46.27760,-72.65627)
  • Marker 1 (46.58577,-72.04089)
Proceed with one marine protected area (MPA) initiative

This study on the creation of a marine protected area in Îles-de-la-Madeleine is being conducted jointly by the Ministère du Développement durable, de l’Environnement, et de la Lutte contre les changements climatiques du Québec (MDDELCC) and Parks Canada. The purpose of the study is to identify sectors of interest for the conservation of marine biodiversity and cultural resources and to assess opportunities for development, education and the enjoyment of the marine environment, as well as challenges involved in the establishment of a marine protected area.

backgrounder Biodiversity conservation
  • Marker 1 (47.38333,-61.86667)