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High Level of Mercury Found in Pumas Linked to Coastal Fog
High-levels of monomethylmercury (MMHg) has been detected in pumas (Puma concolor) roaming coastal central California, USA. Coastal fog has been implicated as the likely culprit.

Pumas and their associated food web in coastal central California live in a region that is regularly inundated with marine fog. The researchers found that adult puma fur and whisker samples from fog-influenced study region had three times more mean total mercury (THg) levels than that in comparable samples collected from pumas living further inland.

According to researchers, mercury in the sea comes from coal-fired power stations and gold mining activities. Forest fires and volcanic eruptions also contribute but only one in five mercury atoms are from these natural sources. Human pollution is the biggest contributor.

 
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Dead Fish Found in Chemically-Cleaned Littoinen Lake - People fishing on Littoinen Lake in southwest Finland say they've found several smelly and deformed dead pike in recent days. Last spring the lake - which was previously oxygen-depleted and murky with green algal blooms - was chemically treated to clean it up. A specialist researcher says the chemical flush was the likely culprit behind the blistered, putrid fish.


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