The situation is worse than we thought – not only in the case of coral reefs, but also in freshwater fish populations.
A new study has shown that in contrast with earlier beliefs, the microorganisms that build coral reefs can die out in a matter of days rather than months due to the warming of the seas.
In a joint study by the University of Newcastle in Britain, Australia’s James Cook University, The University of Technology Sydney and the US National Oceanic and Atmospheric Administration, scientists used CT scans of coral reefs to analyse the impact of heat waves on the coral, and they were surprised to see extremely rapid dissolution of coral skeletons.
The situation is tragic not only for coral reefs: a study by the Leibniz Institute in Berlin has shown that since 1977, freshwater megafauna has declined by 88 percent. The highest declines were observed in the Indomalaya (South and Southeast Asia, the southern part of China) and the Palearctic (Europe, North Africa and most of Asia) realms, and the larger fish species are particularly affected: the populations of sturgeons and salmon have dropped by 94 percent. Overfishing and the radical reduction in the number of free-flowing rivers are the two main threats.
From Alaska to California, the temperature of the Pacific Ocean is well above average.
Since measurements began in Czechia almost two and a half centuries ago, there has not been a summer as hot as this year’s in Prague, when daily average temperatures reached 22.9 degrees Celsius.
In her opening address at the 42nd Regular Session of the UN Human Rights Council, Michelle Bachelet, UN High Commissioner for Human Rights, expressed grave concern about the condition of the global environment.
Climate change is making Germany’s climate warmer, with a series of new high temperature records and heat waves making people’s lives more difficult. In response to the changes, the German Trade Union Confederation has proposed introducing the siesta break to protect workers.
Climate change will have a long-term effect on the future of a third of the bird species studied.
The country’s average temperature has increased by 0.47 degrees Celsius each decade since 1976.
The European skiing industry has to reckon with much less snow and much shorter seasons as a result of climate change. Skiing resorts are responding to the challenge by using snow cannons and employing innovative snow production technologies – a practice that environmentalists believe to be particularly harmful.
It is a lesser known fact that climate change is also making the oxygen levels of the oceans drop. Over the last 50 years, the average oxygen content of the world’s oceans has dropped by almost 2%, which may have dramatic consequences.
A study by researchers at the University of Colorado claims that along with new types of psychological problems such as climate anxiety and ecological grief, climate change has many other unfavourable consequences for human health, such as the chronic kidney disease that is becoming increasingly common among agricultural workers.
Europe is warming up faster than expected, with climate change increasing the number of extremely hot days while reducing the number of extremely cold ones, reported researchers at ETH Zürich University in their study published in the journal of the American Geophysical Union, the Geophysical Research Letters.