Czech study warns of water temperature impact on fish breeding

A rise in water temperatures in Czech ponds due to climate change is leading to inferior water quality and making it more difficult to carry out traditional fish breeding, according to a new study released on Thursday. The report is the work of CzechGlobe, the Global Change Research Institute at the Czech Academy of Sciences, and Mendel University in Brno.

The study says there will be a sharp rise in the number of days every year on which water surface temperature is above 29 degrees Celsius, causing a rapid decline in dissolved oxygen in the water. Between 1961 and 1980 such temperatures were never recorded in today’s Czechia.