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Morphology of the crustose coralline alga Pseudolithophyllum muricatum (Corallinales, Rhodophyta) responds to 30 years of ocean acidification in the Northeast Pacific

As the process of ocean acidification alters seawater carbon chemistry, physiological processes such as skeletal accretion are expected to become more difficult for calcifying organisms. The crustose coralline red algae (Corallinales, Rhodophyta) form an important guild of calcifying primary producers in the temperate Northeast Pacific. The morphology of important ecological traits, namely
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