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Found 10 records similar to Historic mercury and heavy metal deposition in the Experimental Lakes Area (ELA) reconstructed from lake sediment cores

Federal

Kejimkujik National Park, in Nova Scotia, Canada, is a sensitive region for heavy metal contamination, such as mercury, in part due to long-range atmospheric deposition from global and regional industrial regions. The region is remote from industrial centres, but is downwind of major pollution sources in North America and Canada, and historically had numerous gold mining sites. The region has also experienced anthropogenic acidification from sulphate deposition over the 20th century, which has resulted in limnological conditions favourable for mercury (Hg) methylation within Kejimkujik lakes. Kejimkujik is therefore known to be a hotspot for methylmercury (MeHg) bioaccumulation and biomagnification, with the highest mercury concentrations detected within common loon (Gavia immer) populations across Canada and North America.

Last Updated: Sep. 26, 2018
Date Published: May 4, 2018
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  Lake sediment cores, atmospheric deposition, heavy metals, Climate change, Historic trends, Climate Change and Air Pollutants (CCAP), Mercury, Biochemicals
Federal

Lake sediment cores were collected from several locations in Canada as part of the historic mercury and heavy metal deposition trend, analysis, and research component of the Clean Air Regulatory Agenda/Climate Change and Air Pollutant (CARA/CCAP) and Oil Sands Monitoring (OSM) programs. The reason sediment core analysis is used for research purposes is the bottom of a lake can act as a record of the contaminants and all other materials which have fallen into the lake over time. The lake water acts as both a sorting device and as a preservative since the deposits fall in chronological order and if not subject to dredging are not normally otherwise disturbed by humans. In areas where depositional histories are complex, including changing contributions from local, regional and global sources, multiple dated lake sediment cores are useful tools for examining response of not only aquatic ecosystems, but their surrounding landscapes through time to changing emission/deposition scenarios.

Last Updated: Sep. 26, 2018
Date Published: May 4, 2018
Organization: Environment and Climate Change Canada
Formats: HTML
Keywords:  Lake sediment cores, atmospheric deposition, heavy metals, Climate change, Historic trends, Climate Change and Air Pollutants (CCAP), Mercury, Environment, Biota
Federal

The Flin Flon copper–zinc smelter is a site of concern as it has been the largest single source of atmospheric mercury emissions in Canada until operations ceased on July 1, 2010. The smelting and mining activities resulted in mercury contamination to the local environment. Elevated levels of mercury and other trace metals were found in soil humus, peat, plants, fish and sediment cores. The Flin Flon smelter of the Hudson Bay Mining and Smelting Company is located near the Manitoba–Saskatchewan border, 600 km Northwest of Winnipeg and over 400 km away from other major industrial complexes.This study examined nine lakes (Nekik, Douglas, Loucks, Phantom, McClurg, Cleaver, Naosep, Hamel, and Meridian) each lake was located at varying differences within 75 km of the smelter stack these lakes were selected for sediment coring analysis and heavy metal deposition trends.

Last Updated: Sep. 26, 2018
Date Published: Aug. 13, 2018
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  Lake sediment cores, Atmospheric deposition, Heavy metals, Climate change, Historic trends, Climate Change and Air Pollutants (CCAP), Mercury, Contaminants, Flin Flon
Federal

Continuous, year-round measurement of stream stage that is later converted to flow using a stage-discharge relationship occurs on at/near the lake outflows and 2 other stations along the principal watershed tributary, Norberg Creek. Supplemental Information

The Climate Change and Air Pollution (CCAP) program was established in 2016 to identify the severity and extent of adverse impacts of current and future air emissions on aquatic ecosystems to support regulatory actions and policy development. The program includes a number of components, including identifying, monitoring and defining air quality and greenhouse gas (GHG) concerns; improving our understanding of the short- and long-term effects of atmospheric pollutants on the environment; developing a plan to combat climate change; and monitoring and reducing both domestic and transboundary emissions of GHGs. The program is also responsible for identifying and studying emerging issues including multipollutant impacts, major urban sources, and effects of increasing heat on air pollutant formation, among others.

Last Updated: Sep. 23, 2019
Date Published: Apr. 9, 2019
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  acid rain, watershed basin, hydrology, discharge, major ions, nutrients, metals, temperature, dissolved oxygen
Federal

We publish Canada’s greenhouse gas (GHG) and air pollutant emissions projections each year. The GHG emissions projections help us measure progress in reducing greenhouse gas emissions and combating climate change. GHG emissions projections are presented for a few scenarios. The air pollutant projections reflect our action to reduce air pollution.

Last Updated: Mar. 11, 2021
Date Published: Feb. 4, 2019
Organization: Environment and Climate Change Canada
Formats: HTML
Keywords:  Canada, greenhouse, gas, emissions, GHG, national, inventory, report, NIR
Federal

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Air pollutant emissions indicators track emissions from human activities of 6 key air pollutants: sulphur oxides, nitrogen oxides, volatile organic compounds, ammonia, carbon monoxide and fine particulate matter. Black carbon, which is a component of fine particulate matter, is also reported. Sectoral indicators on air pollutant emissions from transportation, off-road vehicles and mobile equipment, electric utilities and the oil and gas industry provide additional analysis on the largest sources of Canada's air pollutant emissions.

Last Updated: Jul. 22, 2019
Date Published: May 30, 2019
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  environmental indicators, air and climate, air pollution, national, emissions, air pollutants, electricity, sulphur oxides, nitrogen oxides
Federal

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Air pollutant emissions indicators track emissions from human activities of 6 key air pollutants: sulphur oxides, nitrogen oxides, volatile organic compounds, ammonia, carbon monoxide and fine particulate matter. Black carbon, which is a component of fine particulate matter, is also reported. Sectoral indicators on air pollutant emissions from transportation, off-road vehicles and mobile equipment, electric utilities and the oil and gas industry provide additional analysis on the largest sources of Canada's air pollutant emissions.

Last Updated: Jul. 22, 2019
Date Published: May 30, 2019
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  environmental indicators, air and climate, air pollution, national, emissions, air pollutants, electricity, sulphur oxides, nitrogen oxides
Federal

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Air pollutant emissions indicators track emissions from human activities of 6 key air pollutants: sulphur oxides, nitrogen oxides, volatile organic compounds, ammonia, carbon monoxide and fine particulate matter. Black carbon, which is a component of fine particulate matter, is also reported. Sectoral indicators on air pollutant emissions from transportation, off-road vehicles and mobile equipment, electric utilities and the oil and gas industry provide additional analysis on the largest sources of Canada's air pollutant emissions.

Last Updated: Jul. 22, 2019
Date Published: May 30, 2019
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  environmental indicators, air and climate, air pollution, national, emissions, air pollutants, oil and gas, volatile organic compounds, sulphur oxides
Federal

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Air pollutant emissions indicators track emissions from human activities of 6 key air pollutants: sulphur oxides, nitrogen oxides, volatile organic compounds, ammonia, carbon monoxide and fine particulate matter. Black carbon, which is a component of fine particulate matter, is also reported. Sectoral indicators on air pollutant emissions from transportation, off-road vehicles and mobile equipment, electric utilities and the oil and gas industry provide additional analysis on the largest sources of Canada's air pollutant emissions.

Last Updated: Jul. 22, 2019
Date Published: Aug. 31, 2018
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  environmental indicators, air and climate, air pollution, national, emissions, air pollutants, transportation, fossil fuels, carbon monoxide
Federal

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Air pollutant emissions indicators track emissions from human activities of 6 key air pollutants: sulphur oxides, nitrogen oxides, volatile organic compounds, ammonia, carbon monoxide and fine particulate matter. Black carbon, which is a component of fine particulate matter, is also reported. Sectoral indicators on air pollutant emissions from transportation, off-road vehicles and mobile equipment, electric utilities and the oil and gas industry provide additional analysis on the largest sources of Canada's air pollutant emissions.

Last Updated: Jul. 26, 2019
Date Published: May 30, 2019
Organization: Environment and Climate Change Canada
Formats: CSV HTML
Keywords:  environmental indicators, air and climate, air pollution, national, emissions, air pollutants, oil and gas, volatile organic compounds, sulphur oxides
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