“Surprise” Climate change, 900ppm CO2, acidification is good news for squid

Squid, “surprise” are going to do well with climate change. (If only it was going to happen).

In the new post-CO2 world, corn and soy may become weeds, but squid may take over the oceans:

Squid will survive and may even flourish under even the worst-case ocean acidification scenarios, according to a new study published this week.

Dr Blake Spady, from the ARC Centre of Excellence for Coral Reef Studies (Coral CoE) at James Cook University (JCU), led the study. He said squid live on the edge of their environmental oxygen limitations due to their energy-taxing swimming technique. They were expected to fare badly with more carbon dioxide (CO2) in the water, which makes it more acidic.

No academic could have guessed that squid would have evolved ways to control their own blood pH:

“Their blood is highly sensitive to changes in acidity, so we expected that future ocean acidification would negatively affect their aerobic performance,” said Dr Spady.

Atmospheric CO2 concentrations have increased from 280 parts per million (ppm) before the industrial revolution to more than 400 ppm today. Scientists project atmospheric CO2 – and by extension CO2 in the oceans — […]

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via JoNova

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June 17, 2019 at 05:10AM

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