image: Erik Björn is injecting small amounts of isotopically enriched mercury into the sediments for the mesocosm experiment. By adding stable (not radioactive) isotopes of mercury the scientists could trace how methylmercury was formed and accumulated in plankton in the mesocosm systems. This material relates to a paper that appeared in the Jan. 27, 2017, issue of Science Advances, published by AAAS. The paper, by S. Jonsson at Umeå University inUmeå, Sweden, and colleagues was titled, 'Terrestrial discharges mediate trophic shifts and enhance methylmercury accumulation in estuarine biota.' view more
Credit: [Credit: Sofi Jonsson]