Water sampling, modeling
Scientists sampled Pacific water from 16 different sites between Honolulu, Hawaii and Kodiak, Alaska. They also constructed a computer simulation that links atmospheric emissions, transport and deposition of mercury with an ocean circulation model.
In the United States, about 40 percent of all human exposure to mercury is from tuna harvested in the Pacific Ocean, according to Elsie Sunderland of Harvard University, a co-author of the study. Because pregnant women who consume mercury can pass on lifelong developmental effects to their children, EPA and the U.S. Food and Drug Administration issued the guidance on consumption of fish for pregnant women and nursing mothers.
The study appeared today in Global Biogeochemical Cycles, which is published by the American Geophysical Union. Its authors included Krabbenhoft, Sunderland and John Moreau of the University of Melbourne, Australia; William Landing of Florida State University; and Sarah Strode of Harvard University.
Reporter Sara Goodman contributed.
Reprinted from Greenwire with permission from Environment & Energy Publishing, LLC. www.eenews.net, 202-628-6500