The world’s lakes and oceans are filled with dissolved oxygen (O2), which aquatic species rely on to breathe. But research published in Nature has found that oxygen levels in temperate lakes are declining rapidly.
“All complex life depends on oxygen. It’s the support system for aquatic food webs. And when you start losing oxygen, you have the potential to lose species,” say Kevin Rose, professor at Rensselaer Polytechnic Institute, US and author on the study. “Lakes are losing oxygen 2.75-9.3 times faster than the oceans, a decline that will have impacts throughout the ecosystem.”