Reuters
September 1, 2020
It’s not an overstatement to say that our oceans are in crisis. Warming waters and ocean acidification caused by greenhouse gas emissions; fertiliser run-off creating dead zones where there’s no oxygen for life to survive, and over-fishing are all contributing to the destruction of biodiversity and loss of the ocean’s ability to mitigate climate change by storing carbon.
Research done for the High Level Panel for Sustainable Ocean Economy highlights the crucial role played by oceans, which account for 70% of the planet’s surface. It sets out ocean-based climate action that will cumulatively contribute as much as 21% of the emissions reduction needed to put us on a 1.5 degree pathway. These include sustainable seafood production; ocean-based renewable energies; the greening of shipping, and the conservation of mangroves and seagrass that store carbon.
To meet the goals of the Paris climate change agreement, a big proportion of the ocean has to be returned to a natural state, according to the Global Deal for Nature, a paper that sets a science-based target of protecting at least 30% of land and oceans by 2030.