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Rising acidity levels could trigger shellfish revenue declines, job losses
Date:6/17/2009

rvests of mollusks, as well as losses of predatory fish and other species that depend on mollusks for food, could lead to economic hardships for fishing communities.

"Ocean acidification will impact the millions of people that depend on seafood and other ocean resources for their livelihoods," said Doney. "Losses of crustaceans, bivalves, their predators, and their habitat in the case of reef-associated fish communities would particularly injure societies that depend heavily on consumption and export of marine resources."

Because changes in seawater chemistry are already apparent and will grow over the next few decades, Cooley and Doney suggest measures that focus on adaptation to future CO2 increases to lessen the impact on marine ecosystems, such as flexible fishery management plans and support for fishing communities.

"Limiting nutrient runoff from land helps coastal ecosystems stay healthy," said Cooley. "Also fishing rules can be adjusted to reduce pressure on valuable species; fisheries managers may set up more marine protected areas, or they may encourage development of new fisheries."


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