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Found 10 records similar to Assessing the health of wild yellow perch populations from the St. Lawrence River

Federal

Multiple metabolic, immune and reproductive effects have been reported in fish residing in effluent-impacted sites. Natural stressors such as parasites also have been shown to impact the responses of organisms to chronic exposure to municipal effluent in the St. Lawrence River (Quebec, Canada). In order to comprehensively evaluate the cumulative impacts of anthropogenic and natural stressors on the health of yellow perch, differential mRNA transcription profiles were examined in juvenile females collected from effluent-impacted and upstream sites with low or high infection levels of the larval trematode Apophallus brevis. Transcriptomics was used to identify biological pathways associated with environmental exposure.

Last Updated: Jul. 29, 2021
Date Published: Mar. 26, 2019
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  St. Lawrence River, Yellow perch (Perca flavescens), RNA-sequencing, Waste Water Treatment Plant (WWTP), wastewater effluent, parasites, Strategic Technology Applications of Genomics in the Environment (STAGE), St. Lawrence Action Plan (SLAP), Environment
Federal

Observations on various types of wetlands, terrestrial environments, and vascular plants for 102 sites visited in 2012 and located on Lake Saint-Pierre are included in this dataset. Since the 1990s, Environment and Climate change Canada (ECCC) has been monitoring changes in wetlands under the State of the St. Lawrence River Monitoring program of the St. Lawrence Action Plan.

Last Updated: Jul. 30, 2021
Date Published: Feb. 9, 2016
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  wetlands, St. Lawrence River, Lake Saint-Pierre
Federal

Temporal changes (1970–2016) in St. Lawrence River wetlands were assessed between Cornwall and Québec to assess wetland response to cumulative anthropogenic pressures in the watershed. Emergent wetlands area and biomass of submerged aquatic vegetation (SAV) were contrasted among five regions subjected to sharply different water level/discharge regime (stabilized, semi-natural, tidal), nutrient concentrations and shoreline use (rural to urbanized). Between 1970 and 2016, over the growing season, St. Lawrence River mean water level have dropped and mean water temperature increased. Reductions in phosphorus concentrations were observed over time both in water and in SAV tissues, in phase with improvements of urban wastewater treatment and phosphorus reduction in upstream Lake Ontario.

Last Updated: Feb. 21, 2022
Date Published: Mar. 26, 2019
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  St. Lawrence River, Lake Saint-Pierre, Lake Saint-Louis, submerged aquatic vegetation (SAV), macrophytes, wetlands, nitrogen depletion, phosphorus, water level
Provincial

All available bathymetry and related information for Lac Saint Cyr were collected and hard copy maps digitized where necessary. The data were validated against more recent data (Shuttle Radar Topography Mission 'SRTM' imagery and Indian Remote Sensing 'IRS' imagery) and corrected where necessary. The published data set contains the lake bathymetry formatted as an Arc ascii grid. Bathymetric contours and the boundary polygon are available as shapefiles.

Last Updated: Apr. 13, 2022
Date Published: Jan. 1, 2008
Organization: Government of Alberta
Formats: SHP XML HTML
Keywords:  73e, alberta, bathymetry, canada, dem, geoscientificinformation, gis data, lac saint cyr, lakes
Provincial

All available bathymetry and related information for Lac Saint Cyr were collected and hard copy maps digitized where necessary. The data were validated against more recent data (Shuttle Radar Topography Mission 'SRTM' imagery and Indian Remote Sensing 'IRS' imagery) and corrected where necessary. The published data set contains the lake bathymetry formatted as an Arc ascii grid. Bathymetric contours and the boundary polygon are available as shapefiles.

Last Updated: Apr. 13, 2022
Date Published: Jan. 1, 2008
Organization: Government of Alberta
Formats: SHP XML HTML
Keywords:  73e, alberta, bathymetry, canada, dem, geoscientificinformation, gis data, lac saint cyr, lakes
Provincial

All available bathymetry and related information for Lac Saint Cyr were collected and hard copy maps digitized where necessary. The data were validated against more recent data (Shuttle Radar Topography Mission 'SRTM' imagery and Indian Remote Sensing 'IRS' imagery) and corrected where necessary. The published data set contains the lake bathymetry formatted as an Arc ascii grid. Bathymetric contours and the boundary polygon are available as shapefiles.

Last Updated: Apr. 13, 2022
Date Published: Jan. 1, 2008
Organization: Government of Alberta
Formats: XML HTML ASCII Grid
Keywords:  73e, alberta, bathymetry, canada, dem, geoscientificinformation, gis data, lac saint cyr, lakes
Federal

The epiphytic cyanobacterium Gloeotrichia pisum forms spherical colonies embedded in a gelatinous matrix that is attached to submerged aquatic vegetation. In surveys of two fluvial lakes of the St. Lawrence River conducted in 2006–2007, growth conditions and diazotrophic ability in conjunction with the biomass and condition of its supporting macrophyte, Vallisneria americana, were examined. G. pisum integrates complex, temporally variable water-quality characteristics that are dependent upon hydrology and water residence time, thus acting as an early warning indicator of incipient habitat degradation that may lead to cyanobacterial proliferation and low biomass of vascular macrophytes. Supplemental Information

The St. Lawrence Action Plan (SLAP) 2011 to 2026 (see http://planstlaurent.qc.ca/en/home.html) is the latest Canada-Quebec Agreement on the St. Lawrence and builds on the four previous agreements implemented since 1988.

Last Updated: Jul. 29, 2021
Date Published: Mar. 26, 2019
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  St. Lawrence River, Lake Saint-Pierre, Lake Saint-Louis, epiphytic cyanobacteria, Gloeotichia pisum, Vallisneria americana, nitrogen depletion, indicator, St. Lawrence Action Plan (SLAP)
Federal

The Beluga whale critical habitat, which includes the Upper Estuary, the Saguenay River up to Sainte-Marguerite Bay, and the southern channel of the Lower Estuary, supports the vital functions of calving and rearing of the young. Due to the lack of information, studies are planned in the near future to increase knowledge of the species. Critical habitat actual limitations could change someday. Purpose

The beluga (Delphinapterus leucas) population in the St. Lawrence Estuary was greatly reduced by hunting, which was finally banned in the St. Lawrence in 1979.

Last Updated: Sep. 20, 2019
Date Published: Jan. 1, 2012
Organization: Fisheries and Oceans Canada
Formats: SHP HTML ESRI REST
Keywords:  Critical Habitat, Threatened Species, Beluga Whale, Delphinapterus leucas, Upper Estuary of St. Lawrence, Lower Estuary of St. Lawrence, St. Lawrence Estuary, Saguenay River, Tadoussac
Federal

Canadian Wetlands Inventory (CWI) data for the lake Saint-Pierre region. Created according to the method developed by the Canadian Wildlife Service, Quebec Region. Between 2003 and 2007, the Canadian Wildlife Service, Quebec Region (CWS-QC) produced wetland maps for several sites in Quebec. This mapping was carried out as part of the Canadian Wetland Inventory (CWI), an initiative launched in 2002 in order to classify wetlands into the five major classes of the Canadian Wetlands Classification System, namely: bogs, fens, marshes, swamps and shallow open water.

Last Updated: May 23, 2018
Date Published: Nov. 25, 2015
Organization: Environment and Climate Change Canada
Formats: SHP PDF HTML
Keywords:  Wetland, Landcover, Quebec, Lake Saint-Pierre, Object-based classification, Landsat, Radarsat, Habitats
Federal

The Coastal Environmental Baseline Program is a multi-year Fisheries and Oceans Canada initiative designed to work with Indigenous and local communities and other key parties to collect coastal environmental data at six pilot sites across Canada (Port of Vancouver, Port of Prince Rupert, Lower St. Lawrence Estuary, Port of Saint John, Placentia Bay, and Iqaluit). The goal of the Program is to gather local information in these areas in effort to build a better understanding of marine ecological conditions. The Maritimes region has developed a physical oceanography program to align with the oceanographic interests and data needs of local communities and stakeholders, with the goal of sharing this information via open data. Starting in 2019, oceanographic parameters including temperature, salinity, depth, turbidity and currents have been continuously monitored at a series of locations covering a broad range of environments in the Port of Saint John and approaches vicinity, including the lower Saint John and Kennebecasis rivers, coastal fringe marshes and embayments, as well as the Musquash estuary Marine Protected Area (MPA).

Last Updated: Apr. 13, 2022
Date Published: Mar. 22, 2022
Organization: Fisheries and Oceans Canada
Formats: FGDB/GDB CSV ESRI REST
Keywords:  Water Temperature, Salinity, Saint John river, CTD, Coastal waters, Environment, Inland waters, Wetlands, Ecosystems
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