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 "Ocean acidification killed off more than 90 per cent of marine life 252 million years ago, scientists believe" |
 WOT |
In an attempt to frighten people about rising CO2 and ocean acidification The Independent ran a story postulating ocean acidification could have been responsible for massive die-offs we know as major extinction events. This is unlikely. Translate "scientists believe" as "a couple of guys had a crazy idea and wrote it up.". In a climate of increasing CO2 this might resonate with some, but rising CO2 has now stalled.
Global energy-related emissions of carbon dioxide stalled in 2014
Preliminary IEA data point to emissions decoupling from economic growth for the first time in 40 years
http://www.iea.org/newsroomandevents/news/2015/march/global-energy-related-emissions-of-carbon-dioxide-stalled-in-2014.html
If it was so acid why didn't the coral die out? It's by far the most sensitive to pH. The fact is, coral has survived 7000 ppm CO2 in the past much higher than the 400ppm of today.
How? It has genes it can switch on that let it ignore heat and pH, that's why. Have they not surveyed all the literature?
Mechanisms of reef coral resistance to future climate change
In less than 2 years, acclimatization achieves the same heat tolerance that we would expect from strong natural selection over many generations for these long-lived organisms.
http://www.sciencemag.org/content/early/2014/04/23/science.1251336
Palau's coral reefs surprisingly resistant to ocean acidification
January 16, 2014 -
Marine scientists working on the coral reefs of Palau have made two unexpected discoveries that could provide insight into corals' resistance and resilience to ocean acidification.
http://nsf.gov/news/news_summ.jsp?org=NSF&cntn_id=130129&preview=false
JJ Scheel (1968:Page 25) proved in the 1950s aquatic life doesn't care about pH at all which you can prove to yourself at home. Transfer any fish from water of pH 9 to water of pH 4.5 and back again - they simply don't care about pH.
It's a widely held myth they do but again, the literature suggests otherwise and I've verified it's right on countless occasions and you can too.
Mythbusters rates this one: utter nonsense. Supervolcanoes blocked out the sun. When you have no light, warmths or plant life, pH of the water, irrelevant to aquatic life, is the least of your problems. Every species alive today survived this, there's no reason to think they won't if it were to happen again - which is isn't.
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