Featured Research

from universities, journals, and other organizations

Mine metals at Maine Superfund site causing widespread contamination

Date:
September 20, 2013
Source:
Dartmouth College
Summary:
Toxic metals from the only open pit mine in an estuary system in the United States are widespread in nearby sediment, water and fish and may be affecting marine and coastal animals that feed on them beyond the mine site, a new study finds.

Hannah Broadley, co-author of a Dartmouth study on toxic mining metal contamination of sediment, water and fish at a Maine Superfund site, collects Atlantic killifish from the Goose Pond estuary's most contaminated area.
Credit: Kate Buckman

Toxic metals from the only open pit mine in an estuary system in the United States are widespread in nearby sediment, water and fish and may be affecting marine and coastal animals that feed on them beyond the mine site, a new Dartmouth study finds.

Related Articles


Mining contamination's effects on human health and aquatic and terrestrial wildlife is well documented in the United States, but the Dartmouth study is one of the first to look at the impacts of an open pit mine on an estuarine environment and the coastal marine food web.

The results, which appear in the journal Archives of Environmental Contamination and Toxicology, are further evidence that humans who eat seafood from areas close to contaminated sites may be at risk. A PDF of the study also is available on request.

As part of Dartmouth's Toxic Metals Superfund Research Program, researchers studied metal concentrations in the sediment, water and Atlantic killifish in the Goose Pond estuary at the closed Callahan Mine Site in Brooksville, Maine. The former open-pit, hard-rock mine is now a Superfund site being cleaned up by the Environmental Protection Agency. The Atlantic killifish, also known as mummichogs and mud minnows, live in brackish and shallow coastal waters in the eastern United States and Canada and are important food for larger fish that humans consume.

As anticipated, researchers found elevated levels of copper, zinc, cadmium and lead in the sediment, water and killifish. But they found the metal concentrations were surprisingly high in distinct areas of the marsh, indicating the metals are continually seeping from the mine's waste rock piles and debris. Results showed the metals from the sediment and water are being taken up by killifish in the Goose Pond estuary and have the potential to affect fish, birds and other animals that feed on them in nearby Penobscot Bay in central Maine. The results also showed the site represents a regional hot spot of copper, zinc and lead for the Gulf of Maine that is surpassed only by levels in some areas of Boston Harbor. Researchers hope their findings will inform the EPA's remediation decisions and provide a baseline for evaluating future actions at the site.


Story Source:

The above story is based on materials provided by Dartmouth College. Note: Materials may be edited for content and length.


Journal Reference:

  1. Hannah J. Broadley, Kate L. Buckman, Deenie M. Bugge, Celia Y. Chen. Spatial Variability of Metal Bioaccumulation in Estuarine Killifish (Fundulus heteroclitus) at the Callahan Mine Superfund Site, Brooksville, ME. Archives of Environmental Contamination and Toxicology, 2013; DOI: 10.1007/s00244-013-9952-y

Cite This Page:

Dartmouth College. "Mine metals at Maine Superfund site causing widespread contamination." ScienceDaily. ScienceDaily, 20 September 2013. <www.sciencedaily.com/releases/2013/09/130920094752.htm>.
Dartmouth College. (2013, September 20). Mine metals at Maine Superfund site causing widespread contamination. ScienceDaily. Retrieved November 27, 2014 from www.sciencedaily.com/releases/2013/09/130920094752.htm
Dartmouth College. "Mine metals at Maine Superfund site causing widespread contamination." ScienceDaily. www.sciencedaily.com/releases/2013/09/130920094752.htm (accessed November 27, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Thursday, November 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Reuters - Innovations Video Online (Nov. 26, 2014) — Innovative recycling project in La Paz separates city waste and converts plastic garbage into school furniture made from 'plastiwood'. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Blu-Ray Discs Getting Second Run As Solar Panels

Blu-Ray Discs Getting Second Run As Solar Panels

Newsy (Nov. 26, 2014) — Researchers at Northwestern University are repurposing Blu-ray movies for better solar panel technology thanks to the discs' internal structures. Video provided by Newsy
Powered by NewsLook.com
Antarctic Sea Ice Mystery Thickens... Literally

Antarctic Sea Ice Mystery Thickens... Literally

Newsy (Nov. 25, 2014) — Antarctic sea ice isn't only expanding, it's thicker than previously thought, and scientists aren't sure exactly why. Video provided by Newsy
Powered by NewsLook.com
3D Map of Antarctic Sea Ice to Shed Light on Climate Change

3D Map of Antarctic Sea Ice to Shed Light on Climate Change

Reuters - Innovations Video Online (Nov. 24, 2014) — A multinational group of scientists have released the first ever detailed, high-resolution 3-D maps of Antarctic sea ice. Using an underwater robot equipped with sonar, the researchers mapped the underside of a massive area of sea ice to gauge the impact of climate change. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins