Will marine life disappear in the oceans as they continue to become too acidic? Scientists say...
Representational image of marine life.
The scientists in a report have emphasised that the oceans in the world are turning too acidic and are not able to sustain marine life or even stabilise the climate.
The report, which has been prepared by the Potsdam Institute for Climate Impact Research (PIK), has mentioned nine factors which are important for regulating the ability of the planet to sustain life.
In recent years, human activities have pushed the safe limit in six of these areas.
Ocean acidification can soon lead to the breaching of the seventh factor, as per the PIK's firstPlanetary Health Check.
The safe limits of the factors which have been breached include climate change; rise in pollutants, which includes plastics and chemical fertilisers used in agriculture; the loss of natural species, natural habitat and freshwater.
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Now, there is a high chance of a sustainable level of ocean acidification exceeding which led to ever-increasing emissions of carbon dioxide (CO2) created from burning fossil fuels like oil, coal and gas.
"As CO2emissions increase, more of it dissolves in sea water… making the oceans more acidic," said Boris Sakschewski, one of the lead authors, while speaking toreporters.
"Even with rapid emission cuts, some level of continued acidification may be unavoidable due to the CO2already emitted and the time it takes for the ocean system to respond. Therefore, breaching the ocean acidification boundary appears inevitable within the coming years," he added.
How acidic water is harming marine life?
The corals, shellfish and the phytoplankton - which feed on several marine species - get damaged by acidic water.
Hence, it also disrupts the food supplies of billions of people and limits the capacity of the ocean to absorb more CO2which eventually limits global warming.
Among the nine boundaries stated in the report, the one that is not close to exceeding is the protectiveozonelayer of the planet.
This shield has been damaged by man-made chemicals which led to acid rain, however, it has begun to recover.
According to PIK, these nine planetary danger levels were mentioned to alert people against tipping past points of Earth's natural systems.
"These tipping points… if crossed, would lead to irreversible and catastrophic outcomes for billions of people and many future generations on Earth," the report said.
Sakschewski said that the nine planetary boundaries are "interconnected" so a breach of a crucial limit can destabilise the entire life system of Earth.
(With inputs from agencies)