(Photo : Getty Images)
Change in Oxygen Levels
Scientists examined samples and measurements collected from 393 lakes in temperate regions of the globe across a period from 1941 to 2017, discovering a general decrease in dissolved oxygen in both shallow and deep water habitats. That change in oxygen levels has a contagion effect, all the way from the water biogeochemistry to the health of human populations who may depend on these lakes.
It could also bring about boosted greenhouse gas emissions from aquatic bacteria that generate methane. Kevin Rose, an environmental biologist from the Rensselaer Polytechnic Institute said: All complex life relies on oxygen, It s the aquatic food web s support system. And when you begin to lose oxygen, you have the possibility of losing species.
Close
As National Aeronautics and Space Administration (NASA) rover Perseverance examines the Mars surface, researchers looking for clues of past life on the distant planet are making use of data collected on a mission that is very much closer to home at a lake in Southwest Turkey.
The National Aeronautics and Space Administration (NASA) says the rock and mineral deposits at Salda are the closest match on earth to those near the Jezero Crater where the rover is arrived and which is assumed by scientists to have once been drenched with water.
Information collected from the Salda Lake may be of help to researchers as they hunt for skeletal traces of microbial life secured in sediment believed to have been stored around the delta and the long-vaporized lake it once fed.