Mercury was a steel ability you to definitely that is found in elevated accounts in a number of ponds for the southwest Alaska.
It will build up in fish one inhabit these ponds year-bullet.
Upcoming while the birds, some one or other dogs eat into the seafood out of those people ponds, mercury can make its way up your food strings.
The latest Federal Park Services, You Geological Survey and other companies research mercury levels inside the southwest Alaskas lakes to greatest see mercurys impact on ecosystems and just how it gets around.
In the 2005, the brand new Federal Park Solution began monitoring mercury membership into the low-migratory lake fish in Katmai National Park and you may Keep and Lake Clark National Playground Keep.
Subsequently ive compiled around eight hundred seafood trials, symbolizing nine species out-of 20 ponds, told you Krista Bartz, a marine ecologist into the NPS Southwest Alaska System collection and you may keeping track of system. Weve discovered that filets of long-resided predator https://datingmentor.org/tr/mamba-inceleme/ variety, eg lake bass and you will northern pike, may have elevated levels away from mercury and they have a tendency to increase which have seafood age.
The level of mercury in lakes varies generally on areas.
Experts seen the best concentrations within the lake trout during the Katmais Lake Brooks, on average 0.53 parts for each and every mil.
The official advises girls off childbirth decades, breastfeeding parents and you will youngsters maximum its consumption of fish that have mercury levels greater than 0.20 bits for every single billion.