PARIS: Over the past 20 years huge swathes of the world's oceans have changed colour, displaying a subtle greening towards the tropics that researchers say points to the effect of climate change on life in the world's seas.
"The reason we care about the colour changes is because the colour reflects the state of the ecosystem, so colour changes mean ecosystem changes," lead author BB Cael, of Britain's National Oceanography Centre, told AFP. These produce a significant amount of the oxygen we breathe, are a crucial part of the global carbon cycle and are a foundational part of the ocean food web.Researchers are keen to develop ways of monitoring changes in ecosystems in order to track climate changes and enshrine protected areas.
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