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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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Mechanical Harvesting Removed 6,000 lbs of Invasive Eurasian Milfoil in Two Hours - Invasive weed management is an ongoing process on Black Lake in St. Lawrence County, New York. On one September afternoon, the Black Lake Association harvested roughly 6,000 pounds of invasive wet weeds in less than two hours.


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