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Chemical Monitoring in Local Foods: Mercury in Fish

Description

Mercury (Hg) enters the environment through natural processes and human activities. There are three forms of Hg: elemental (metallic) mercury, inorganic mercury salts and organic mercury... More ≫

Description

Mercury (Hg) enters the environment through natural processes and human activities. There are three forms of Hg: elemental (metallic) mercury, inorganic mercury salts and organic mercury compounds. Methylmercury (MeHg) is often formed from inorganic mercury during biological processes such as methylation by microorganisms in water and sediment. MeHg can accumulate in aquatic organisms including fish. People are exposed to very low levels of mercury in the air, water and food. Some people may be exposed to relatively higher levels of mercury by eating MeHg-containing fish. MeHg accumulates in the human body over time and because it is a known neurotoxin, it is necessary to limit human exposure to MeHg. To protect public health, Health Canada has proposed mercury guidelines and advisories for fish consumption based on total mercury (THg; all forms of Hg in a sample). This dataset was collected as part of long-term monitoring of mercury levels in various species of fish in Albertan...

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Fall walleye index netting at Lac La Biche, Alberta, 2014

Description

The Fall Walleye Index Netting survey was conducted from September 15-19, 2014. A total of 1,166 fish were caught in this survey representing 8 species. a total of 390 walleye were caught in the... More ≫

Description

The Fall Walleye Index Netting survey was conducted from September 15-19, 2014. A total of 1,166 fish were caught in this survey representing 8 species. a total of 390 walleye were caught in the 32 nets. The report summarizes the statistics of all the fish caught.

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Buck Lake fall walleye (Sander vitreus) index netting survey

Description

Survey objectives included estimating catch per unit effort, as well as various population demographics (age, growth rate, reproductive status) in order to monitor the effectiveness of Walleye... More ≫

Description

Survey objectives included estimating catch per unit effort, as well as various population demographics (age, growth rate, reproductive status) in order to monitor the effectiveness of Walleye management and to ensure the stability and sustainability of Walleye populations at this location.

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Biological survey of Gull Lake, 1969

Description

A report about the fishing at Gull Lake.

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