New Zealand Press Association: Bluff’s oyster fisheries in Foveaux Strait may be at the top of a hit list of species vulnerable to increasing acidity levels in the oceans, New Zealand scientists say. But the global phenomenon of ocean acidification may pose a threat not only to New Zealand’s fisheries and aquaculture industries, but to marine ecosystems around the world, according to the national science academy, the Royal Society. “Concerns exist over acidification and its potential, within decades, to …