Redfin needlefish “hiding” below the sea surface near the Carribean island of Curacao. Credit: Juliette Jacquemont .
Warmer and more acidic seawater has a greater impact on fish and invertebrate animals than previously understood, according to a study co-led by NIOZ marine biologist Katharina Alter.
Before the use of this method, ocean warming and more acidic seawater was known to negatively affect fish and invertebrate animals in three general ways: their chance of survival is reduced, their metabolism is increased, and the skeletons of invertebrates are weakened. Alter and her colleagues calculated the consequences of three projected scenarios of carbon dioxide increase, and thus of ocean warming and ocean acidification: extreme increase, moderate increase at the current speed and – due to possible measures – mitigated increase.
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