Ocean acidification, primarily driven by rising atmospheric CO₂ levels, poses a significant threat to marine ecosystems by lowering the pH of ocean waters. This change in acidity makes it more challenging for calcifying organisms, such as corals, mollusks, and some plankton species, to create and maintain their calcium carbonate shells and skeletons. As these organisms struggle to survive, it can lead to declines in their populations, which are crucial for the structural integrity of coral reefs and the overall health of marine habitats.
Moreover, the impact of ocean acidification extends beyond just individual species; it disrupts entire food webs. For example, as shellfish populations decrease, species that depend on them for food,like certain fish,face food shortages. Additionally, coral reefs, which provide habitat for a vast array of marine life, become more susceptible to stressors like bleaching and disease when they can’t build their structures effectively. The cascading effects of these changes threaten biodiversity and the livelihoods of communities that rely on healthy oceans for fishing and tourism.