A global-scale assessment of fish mercury concentrations and the identification of biological hotspots
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu časopisecké články
PubMed
31412499
DOI
10.1016/j.scitotenv.2019.06.159
PII: S0048-9697(19)32730-5
Knihovny.cz E-zdroje
- Klíčová slova
- Biomonitoring, Human health criteria, Mercury, Minamata convention,
- MeSH
- chemické látky znečišťující vodu metabolismus MeSH
- ekosystém MeSH
- monitorování životního prostředí * MeSH
- potrava z moře (živočišná) MeSH
- potravní řetězec MeSH
- rtuť metabolismus MeSH
- ryby metabolismus MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- chemické látky znečišťující vodu MeSH
- rtuť MeSH
We present data on a rapid assessment of fish Hg concentrations from 40 different waterbodies in 26 countries that includes data on 451 fish of 92 species. Significant differences in fish Hg concentrations were observed across fish foraging guilds and in general, higher trophic level fish (i.e., piscivores and carnivores) showed the highest mean total Hg (THg) concentrations. However, elevated THg concentrations observed in a lower trophic level, detrivorous species highlights the importance of understanding Hg concentrations across a wide range of trophic levels, and also characterizing site-specific processes that influence methylmercury (MeHg) bioavailability. A linear mixed effects model was used to evaluate the effects of length, trophic level, sampling location, and taxonomy on THg concentrations. A positive, significant relationship between THg in fish and fish size, trophic level, and latitude of the sampling site was observed. A comparison of Hg concentrations across all sites identifies biological mercury hotspots, as well as sites with reduced Hg concentrations relative to our overall sampling population mean Hg concentration. Results from this study highlight the value of rapid assessments on the availability of methylmercury in the environment using fish as bioindicators and the need for expanded biomonitoring efforts in understudied regions of the world. This study also provides insights for the future design and implementation of large-scale Hg biomonitoring efforts intended to evaluate the effectiveness of future Hg reduction strategies instituted by the Minamata Convention on Mercury.
Arnika Association Chlumova 17 Prague 3 130 00 Czech Republic
Biodiversity Research Institute 276 Canco Road Portland ME 04103 USA
IPEN Första Långgatan 18 413 28 Göteborg Sweden
The Intelligence Group LLC 443 North Franklin St Suite 220 Syracuse NY 13204 USA
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