Low mercury levels in marine fish from estuarine and coastal environments in southern China
| Autor: | Ke Pan, Yin Ki Tam, Heidi Chan, Wen-Xiong Wang |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
China
Food Chain Health Toxicology and Mutagenesis Biomagnification chemistry.chemical_element Wetland Toxicology chemistry.chemical_compound Animals Seawater Methylmercury Ecosystem geography geography.geographical_feature_category Overfishing Fishes Aquatic animal Estuary General Medicine Mercury Methylmercury Compounds Pollution Food web Mercury (element) Fishery chemistry Environmental chemistry Environmental science Estuaries Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environmental pollution (Barking, Essex : 1987). 185 |
| ISSN: | 1873-6424 |
| Popis: | This study is the first comprehensive evaluation of total Hg and methylmercury (MeHg) concentrations in wild marine fish from an estuarine and a coastal ecosystem in southern China. A total of 571 fish from 54 different species were examined. Our results showed that the Hg levels were generally low in the fish, and the Hg levels were below 30 ng g−1 (wet weight) for 82% of the samples, which may be related to the reduced size of the fish and altered food web structure due to overfishing. Decreased coastal wetland coverage and different carbon sources may be responsible for the habitat-specific Hg concentrations. The degree of biomagnification was relatively low in the two systems. |
| Databáze: | OpenAIRE |
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