Scientists say the colors of the world's oceans will increase by the end of the century due to climate change, endangering the marine ecosystem from the bottom up.
The color of 50% of the ocean will change until 2100 due to changes in the phytoplankton communities, according to at the Massachusetts Institute of Technology published earlier this month in Nature Communications. Scientists say blue water in the subtropical zones will look blue, while greener water near the poles will look greener.
The phytoplankton or algae that scientists are talking about are small, vital marine organisms ) that can change in the population depending on the temperature of the ocean, which several climatic studies have shown to grow rapidly. The study has used a climate model to design ocean changes throughout the century and has shown ocean color changes in a world warmer than 3 degrees ̵
The study says climate change will cause phytoplankton bloom in some ocean regions, while in others it causes changes in the color of the water. Warming in subtropical areas may deprive phytoplankton of nutrients and reduce their population, but warming in polar regions can provide a better environment for their growth. Scientists say the color changes will be too gradual to notice the average person over time, but change is a much greater narrator of other ocean problems.
"It could be potentially quite serious," Stephanie Doutkevich  in a press release . "If climate change shifts one community of phytoplankton into another, it will also change the types of food networks they can support."
Phytoplankton is at the root of the marine life food chain, so reducing algae can trigger a reaction that affects the fish populations of the ocean. Algae also absorb atmospheric carbon dioxide for photosynthesis, so reducing phytoplankton may mean more carbon dioxide in the air.
The study says it may take some time before scientists can properly predict how climate change affects phytoplankton communities, so the next best method is to pay attention to ocean color changes.
"Changes are happening due to climate change," said Duckiewicz to The Washington Post . "It will take some time before we can statistically show this. But changing the color of the ocean will be one of the early warning signals that we have really changed our planet. "