Many marine species will be harmed or won’t survive if the levels of carbon dioxide continue to increase.
Current protection policies and management practices are unlikely to be enough to save them. Unconventional, non-passive methods to conserve marine ecosystems need to be considered if various marine species are to survive.
This is the conclusion of a group of scientists led by University of California, Santa Cruz researcher and Lawrence Livermore National Laboratory visiting scientist Greg Rau, and includes Elizabeth McLeod of The Nature Conservancy in Hawaii and Ove Hoegh-Guldberg of the University of Queensland in Australia.
The increasing concentration of atmospheric CO² is thermally and chemically impacting the ocean and its ecosystems, namely warming and acidifying the oceans. By the middle of this century, the globe will likely warm by at least 2 degrees Celsius and the oceans will experience a more than 60 percent increase in acidity relative to pre-industrial levels.
“Our concern is that the specific actions to counter such impacts as identified in current policy statements will prove inadequate or ineffective,” say the authors. “A much broader evaluation of marine management and mitigation options must now be seriously considered.”
When carbon dioxide is released into the atmosphere, a significant fraction is passively taken up by the ocean in a form that makes the ocean more acidic. This acidification has been shown to be harmful to many species of marine life, especially corals and shellfish.