March 23, 2021 — The new paper is the most comprehensive assessment to date of where strict ocean protection can contribute to a more abundant supply of healthy seafood and provide a cheap, natural solution to address climate change, in addition to protecting embattled species and habitats.

As reported in Nature, researchers identified specific areas of the ocean that could provide multiple benefits if protected. Safeguarding these regions would protect nearly 80% of marine species, increase fishing catches by more than 8 million metric tons, and prevent the release of more than one billion tons of carbon dioxide by protecting the seafloor from bottom trawling, a widespread yet destructive fishing practice.

BLUEPRINT TO PROTECT NATURE

The study is also the first to quantify the potential release of CO2 into the ocean from trawling. It finds that trawling pumps hundreds of millions of tons of CO2 into the ocean every year.

“Ocean life has been declining worldwide because of overfishing, habitat destruction, and climate change. Yet only 7% of the ocean is currently under some kind of protection,” says lead author Enric Sala, an explorer in residence at the National Geographic Society.

“In this study, we’ve pioneered a new way to identify the places that—if protected—will boost food production and safeguard marine life, all while reducing carbon emissions,” Sala says. “It’s clear that humanity and the economy will benefit from a healthier ocean. And we can realize those benefits quickly if countries work together to protect at least 30% of the ocean by 2030.”

To identify the priority areas, researchers analyzed the world’s unprotected ocean waters, focusing on the degree to which they are threatened by human activities that can be reduced by marine protected areas (for example, overfishing and habitat destruction).

Read the full story at Futurity