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Fig. 3 | Environmental Sciences Europe

Fig. 3

From: Seasonal variability in metal and metalloid burdens of mussels: using data from the German Environmental Specimen Bank to evaluate implications for long-term mussel monitoring programs

Fig. 3Fig. 3

Concentrations (ng g−1 wet weight ww) of cobalt, arsenic, total mercury and methylmercury in blue mussel (Mytilus edulis Complex) sampled at the North Sea sites Eckwarderhoerne and Koenigshafen and at the Baltic Sea site Darsser Ort. Shown are time trends for annual composite samples covering the years 2000–2017 (continuous line = significant linear or non-linear trend; dashed line = trend not significant; p = 0.05) as well as monthly concentrations in 2013, 2015 and 2017; for mercury the EQS is given as red line. Note the different scaling of the y-axis for total Hg and MeHg at Darsser Ort

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