Ocean Acidification is now irreversible… at least on timescales of at least… TENS of THOUSANDS of years…
Even with stabilisation of atmospheric CO2 at 450 ppm, Ocean Acidification will have profound impacts (death and extinction) on many marine systems.
LARGE and rapid reductions of global CO2 emissions are needed globally by at LEAST 50% by 2050.
Analysis of past events in Earth’s geologic history suggests that chemical recovery (normal pH for LIFE in the Ocean) will take TENS of THOUSANDS of years – while the recovery of ecosystem function and biological diversity (LIFE AS WE KNOW IT) can take much longer. (MILLIONS OF YEARS)
..:: “Every day, 70 MILLION TONS of CO2 are released into Earth’s atmosphere. ( remaining in the atmosphere for thousands of years )
..:: “Every day, 20 MILLION TONS of that CO2 are absorbed into the OCEANS, thereby increasing the overall ACIDITY of the OCEANS.
By 2100, Ocean acidity will increase another 150 to 200 hundred percent.
This is a dramatic change in the acidity of the oceans. And it has a serious impact on our ocean ecosystems; in particular, it has an impact on any species of calcifying organism that produces a calcium carbonate SHELL.
..:: “These are changes that are occurring far too fast for the oceans to correct naturally, said Dr Richard Feely with the US National Oceanic and Atmospheric Administration (NOAA)
..:: “Fifty-five million years ago when we had an event like this (and that took over 10,000 years to occur), it took the oceans over 125,000 years to recover, just to get the chemistry back to normal,” he told BBC News.
..:: “It took two to 10 million years for the organisms to re-evolve, to get back into a normal situation.
..:: “So what we do over the next 100 years will have implications for ocean ecosystems from tens of thousands to millions of years. That’s the implication of what we’re doing to the oceans right now.”