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Entire marine food chain at risk from rising CO2 levels in water http://apocadocs.com/s.pl?1397432386
Researchers studied the behavior of coral reef fish at naturally occurring CO2 vents in Milne Bay, in eastern Papua New Guinea.
They found that fish living near the vents, where bubbles of CO2 seeped into the water, "were attracted to predator odour, did not distinguish between odours of different habitats, and exhibited bolder behaviour than fish from control reefs".
The gung-ho nature of CO2-affected fish means that more of them are picked off by predators than is normally the case, raising potentially worrying possibilities in a scenario of rising carbon emissions.
More than 90 percent of the excess CO2 in the atmosphere is soaked up by the oceans. When CO2 is dissolved in water, it causes ocean acidification, which slightly lowers the pH of the water and changes its chemistry. Crustaceans can find it hard to form shells in highly acidic water, while corals risk episodes of bleaching.
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[Read more stories about:
ecosystem interrelationships, ocean acidification, coral bleaching]
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'Doc Michael says:
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When you say "entire marine food chain," can you be more specific?
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