Ocean Acidification: As oceans absorb roughly 30% of human-emitted CO₂, seawater chemistry changes, lowering pH in a process called ocean acidification. This reduces carbonate ion availability, hindering shell and skeleton formation in corals, mollusks, plankton, and some fish. Coral reefs—home to 25% of marine species—are especially vulnerable, with bleaching and structural weakening threatening entire ecosystems. Acidification also disrupts food webs, impacting fisheries that feed billions. Unlike warming, acidification is virtually irreversible on human timescales. Mitigation hinges on rapid CO₂ emission cuts; local protections like marine reserves offer limited relief. Scientists warn of cascading effects: if keystone species collapse, ocean productivity could plummet. Addressing this “other CO₂ problem” is essential for marine biodiversity and global food security.
Add Comment + Vote ( 1 )...
There are currently no comments !