by Norwegian University of Science and Technology, Jan. 9, 2020 in WUWT
A three-year, comprehensive study of the effects of ocean acidification challenges previous reports that a more acidic ocean will negatively affect coral reef fish behaviour.
The study, conducted by an international coalition led by scientists from Australia and Norway, showed that coral reef fish exposed to CO2 at levels expected by the end of the century did not change their activity levels or ability to avoid predators.
“Contrary to previous studies, we have demonstrated that end-of-century CO2 levels have a negligible impact on the behaviour and sensory systems of coral reef fish,” said Timothy Clark, the lead author of the study and an associate professor at Deakin University in Australia.
Although this is good news on its own, ocean acidification and global warming remain a major problem for coral reefs, the researchers said. Ocean acidification is a problem for creatures that rely on calcium carbonate to make shells and skeletons, such as coral reef organisms, while higher ocean temperatures lead to coral bleaching and death.
by Chris White, January 9, 2020 in ClimateChangeDispatch
Officials who manage Glacier National Park are swapping out signs warning visitors that climate change would cause the park’s glaciers to disappear by 2020.
The U.S. Geological Survey told the park in 2017 that the complete melting off of the glaciers was no longer expected, park spokeswoman Gina Kurzmen told CNN.
Forecast models over the years show the glaciers were no longer at risk of disappearing by that date, she noted.
Placards at the St. Mary’s Visitor Center, located in Montana’s mountain ranges, were reportedly changed in 2019. The park is waiting for budget authorization to update the park’s full set of signs, Kurzman noted.
The signs will be changed to say: “When they will completely disappear depends on how and when we act. One thing is consistent: the glaciers in the park are shrinking.”
SEE ALSO: National Park Stealth Removes Warning That All Glaciers Will Be Gone By 2020
SEE ALSO: Himalayan Glacier Loss Caused By Many Factors, Not Just Warming
USGS noted in a report to the Daily Caller News Foundation in 2019 that recent harsh winters had significantly changed forecasts from years past.
“Glacier retreat in Glacier National Park speeds up and slows down with fluctuations in the local climate,” a representative with the USGS told the DCNF at the time. The agency is responsible for managing the park.
“Subsequently, larger than average snowfall over several winters slowed down that retreat rate and the 2020 date used in the NPS display does not apply anymore,” the representative said.
Also : National Park Stealth Removes Warning That All Glaciers Will Be Gone By 2020