Publication details
Long-Term Monitoring of Mercury Content in Fish From the Želivka Reservoir-Syndrom of Newly Filled Reservoir
| Authors | |
|---|---|
| Year of publication | 2011 |
| Type | Article in Periodical |
| Magazine / Source | International Journal of Electrochemical Science |
| MU Faculty or unit | |
| Citation | |
| Field | Other specializations of internal medicine |
| Keywords | predator; mercury methylation; bioaccumulation; flooded reservoir |
| Description | A systematic investigation of bioaccumulation of mercury in fish from the manmade reservoir Želivka (Czech Republic) was performed from 1974 to 2011. Changes of mercury concentrations in muscle and liver of four predatory fish species in this location are summarized and discussed. Tissue mercury concentrations in Esox lucius, Aspius aspius, Perca fluviatilis, and Abramis brama are related to fish age and time of sampling in the thirty-seven year period after flooding. Monitoring data were divided into five time periods from 1974 to 2011. Although no local or point mercury sources in the Želivka reservoir are known, high mercury content in all examined fish species were found in the years shortly after impoundment. Mercury concentration in muscle and liver showed significant differences among time periods for all species. The highest mercury content was found in the first period after impoundment (1985 and earlier) whereas the lowest content was determined to be from 1990 to 1995 (15-20 years after flooding). A significant decrease during the monitored years was observed both for muscle and liver of fish and is presently stabilized at around 0.2 mg kg-1. |