Coral disease linked to a warming Atlantic

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Over the last four decades, the iconic elkhorn and staghorn corals that dominated Caribbean reefs for millions of years have all but disappeared. According to a new study, ocean warming has played a significant role in this dramatic decline....

Ocean circulation change: Sea level spiked for two years along Northeastern North America

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Sea levels from New York to Newfoundland jumped up about four inches in 2009 and 2010 because ocean circulation changed. The unusual spike in sea level caused flooding along the northeast coast of North America and was independent of any hurricanes or winter storms. A new article documents that the extreme increase in sea level rise lasted two years, not just a few months....

Massive amounts of Saharan dust fertilize the Amazon rainforest

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Every year, millions of tons of nutrient-rich Saharan dust cross the Atlantic Ocean, bringing vital phosphorus and other fertilizers to depleted Amazon soils. For the first time, scientists have an accurate estimate of how much phosphorus makes this trans-Atlantic journey....

Ocean acidification slows algae growth in the southern ocean

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Scientists demonstrate for the first time that ocean acidification could have negative impacts on diatoms in the Southern Ocean. In laboratory tests they were able to observe that under changing light conditions, diatoms grow more slowly in acidic water....

Looking back into the past of oceans: Acidification trends, seasonal fluctuations

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Using cutting edge technologies researchers were able to reconstruct pH values of the Northern Pacific with a high resolution since the end of the 19th century. The study reveals a clear acidification trend, but also strong seasonal fluctuations....

Bacteria in marine sponges harvest phosphorus for reef community

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Significant accumulations of polyphosphate granules have been found in three common sponge species of the Caribbean coral reef, indicating that microorganisms that live on marine sponges are pulling phosphorus out of the water to feed themselves and survive in a deep-water environment where very few nutrients are available. This finding has important implications for understanding how phosphorus is sequestered and recycled in a reef environment....

Scientists bring oxygen back to dead fjord

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More and more of the world's waters are seriously lacking oxygen. Could we use pumps to bring oxygen and thus higher life back into these waters? A Danish/Swedish research team says yes. They installed pumps in a Swedish fjord that showed a strong oxygen deficit and now they report that all the right oxygen-loving organisms have come back to the fjord....

Meet Russ Green, Deputy Superintendent and Research Coordinator

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Meet Russ Green, deputy superintendent and research coordinator at Thunder Bay National Marine Sanctuary (NMS) in Alpena, Michigan.

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Greenland is melting: The past might tell what the future holds

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Scientists have managed to quantify how the Greenland Ice Sheet reacted to a warm period 8,000-5,000 years ago. Back then temperatures were 2-4 degrees C warmer than they are in the present. Their results are important as we are rapidly closing in on similar temperatures....

Global impact of debris on marine life studied

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Nearly 700 species of marine animal have been recorded as having encountered humanmade debris such as plastic and glass according to the most comprehensive impact study in more than a decade....