, often termed “New England’s Titanic.” This project uses cutting-edge technology to construct 3D photogrammetric models of the Portland and other wrecks for archaeological and biological research and resource management. She is currently training for the first post-certification mission of Boeing’s Starliner spacecraft – the second crewed flight for that vehicle – and her third long duration mission aboard the International Space Station. Dr. Gregory Skomal is an accomplished marine biologist, underwater explorer, photographer, and author. He has also discovered hydrothermal vents and “black smokers” in the Galapagos Rift and East Pacific Rise in 1977 and 1979. Mercury emitted into the air eventually settles into water or onto land where it can be washed into water. Methylmercury is particularly damaging to developing embryos, which are five to ten times more sensitive than adults. A pioneer in the development of deep-sea submersibles and remotely operated vehicle systems, he has taken part in more than 155 deep-sea expeditions. Kirstin also has ongoing projects in the Arctic and on coral reefs in Palau. Lake acidification, addition of substances like sulfur that stimulate methylation, and mobilization of mercury in soils in newly flooded reservoirs or constructed wetlands have been shown to increase the likelihood that mercury will become a problem in fish. “With the increases we’ve seen in the recent past, the next 50 years could very well add the same amount we’ve seen in the past 150,” said Lamborg. 90% In addition, they found that ocean waters shallower than about 100 m (300 feet) have tripled in mercury concentration since the Industrial Revolution and that the ocean as a whole has shown an increase of roughly 10 percent over pre-industrial mercury levels. 6. In recent years, biologists have been tracking mercury’s footprints in unexpected habitats and species. In North American sediment cores, sediments deposited since industrialization have mercury concentrations about 3-5 times those found in older sediments. To obtain estimates for shallower waters and to provide basin-wide numbers for the amount of mercury in the global ocean, the team needed a tracer—a substance that could be linked back to the major activities that release mercury into the environment in the first place. For more information, please visit www.whoi.edu. If elemental mercury is ingested, it is absorbed relatively slowly and may pass through the digestive system without causing damage. At dietary mercury The concentration of dissolved organic carbon (DOC) and pH have a strong effect on the ultimate fate of mercury in an ecosystem. Even the deepest parts of the ocean have not escaped unscathed. One result is that intermediate levels of the ocean (between 100 and 1,000 meters depth) are also enriched in mercury up to 2.5 times the natural background rate. Mercury itself isn’t a bogeyman, as it occurs naturally at low levels in rock, soil and water throughout the world. of international trade TRADE travels by ship. now account for more than three-quarters of all fish consumption advisories in the United States. concentrations that are typical of parts of the Everglades, the behavior of juvenile great egrets can be affected. Although mercury is a globally dispersed contaminant, it is not a problem everywhere. In studies in Wisconsin, reductions in loon chick production has been found in lakes where mercury concentrations in eggs exceed concentrations that are toxic in laboratory studies. All means for fish and shellfish concentrate mercury in sea water gases the... 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