Due to climate change, the Oceans’ “dead zones” are increasing. The scientists are issuing warnings that if the climate change is not restricted then it would disrupt the marine life. A new study has suggested that warming has reduced the oxygen levels in large swaths of the deep ocean, causing a threat to communities of sea life. Liquid water contains dissolved oxygen which is being used by fishes and other organisms to breathe. The dead zones are basically Oxygen-deprived zones where it is tough for the marine life to survive.
One of the latest published studies has suggested that Marine waters are losing oxygen thanks to climate change. The lead author, Denise Breitburg, a marine ecologist with the Smithsonian Environmental Research Center, conclude that climate change is emptying vast regions of the ocean from oxygen, changing what and where creatures live and eat. It is also causing shrinkage in fish populations and making overfishing more likely. Oxygen loss in the oceans is also a very important aspect of climate change. The researcher further suggested that loss of oxygen is nothing but the destruction of an ecosystem. Human beings can clearly observe the extinction of species on land due to climate change but they won’t be able to see if this is happening in the water.
The oxygen is less soluble in warm water. Owing to this, warm water doesn’t contain as much oxygen as cold water. Further, the rise in ocean’s temperature also stokes the metabolism of both microbes and larger creatures, causing them to use more of whatever oxygen there is. As warm water is lighter than cold water, it is making harder for fresh oxygen from the air to mix down into the deep layers of oceans which are oxygen deficit. All these factors are adversely affecting the marine life.
The drop in the oxygen level in water is also influencing the behavior and growth of fishes as well as other ocean organisms. The shortage of oxygen is making them more susceptible to diseases. Further, it is also adversely affecting their reproduction capability. Larger forms of sea life are either dying due to low oxygen or are abandoning oxygen-starved waters, invading nearby ecosystems. This may upset the balance of life, disrupt food webs or increase their vulnerability to predators.
Climate change is not a myth it is certainly a reality. The acidification and warming of oceans are clearly suggesting that climate change is disrupting the ecological balance. Time has come to make some sincere efforts in order to preserve the diversity on this planet. Not only, should the global community put efforts to improve oxygen in the ocean but also take measures to check climate change.