AQUATIC ANIMALS CANNOT SURVIVE IN HOT WATER. WHY ?
Answers
Answer:
'Warm water increases the need for oxygen in ectotherm animals,' explains Verberk. 'At the same time, breathing underwater is difficult because of the low solubility of oxygen, which makes it hard foraquatic animals to meet the oxygen demand.
Answer:
Warm water speeds up the animals' metabolic need for oxygen to such an extent that it causes them to suffer from fatal respiratory distress. A team of ecologists from Radboud University and Cardiff University published this finding in Global Change Biology.
Until now, the link between rising water temperatures and higher mortality rates in aquatic animals was a bit of a chicken-and-egg situation. Are they dying because they're unable to absorb enough oxygen from the water? Or are they not absorbing enough oxygen because the warm water is killing them in a different way?
Our earth and the water on it are warming up. This affects the growth of aquatic plants and the decomposition of organic material and this may cause respiratory distress in aquatic animals. These were the results of a recent study on the effects of water temperature and oxygen levels on the growth and survival of animals.
‘Previous studies either considered extreme temperatures in a lab setting or field studies were rather general,’ explains Wilco Verberk, an aquatic ecologist at Radboud University. Verberk’s work with the Cardiff team is the first to couple lab experiments with unique data compiled by the English Environment Agency and Natural Resources Wales that links more than 200,000 measurements to factors like water temperature, oxygen levels and the presence of aquatic insects in the field.