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Dozens of countries to sign United Nations ocean treaty

Threats to the world's oceans have been mounting in recent years as a result of overfishing.
PHOTOGRAPH BY Andrey Nekrasov / Barcroft Images (Photo credit should read © Andrey Nekrasov / Barcroft Media via Getty Images)

Threats to the world's oceans have been mounting in recent years as a result of overfishing. PHOTOGRAPH BY Andrey Nekrasov / Barcroft Images (Photo credit should read © Andrey Nekrasov / Barcroft Media via Getty Images) Photo: Getty

A new United Nations treaty to protect the world’s oceans is expected to be signed by dozens of countries, another step in the efforts to reverse the damage done to fragile marine environments by overfishing and other human activities.

The global pact to conserve biodiversity on the high seas was finally agreed in March and formally adopted by the UN in June. It is seen as a crucial tool to meet a target agreed last year to protect 30 per cent of Earth’s land and sea by 2030, known as “30 by 30”.

At least 60 countries are expected to sign the agreement at the annual UN General Assembly on Wednesday. However, it still needs to be ratified on a national level before it goes into effect.

Mads Christensen, interim executive director of Greenpeace International, described the signings as a “powerful signal” and help maintain momentum to meet the “30 by 30” target.

“But this signing is a purely symbolic moment,” he said.

“Now politicians must bring the treaty home and ensure it is ratified in record time.”

The agreement will create ocean sanctuaries where fishing will be prohibited, and also ensure human activity on the high seas is subject to environmental impact assessments.

The International Union for the Conservation of Nature estimates that $US500 million ($A775 million) in funding will be required to kickstart the treaty, and a special implementation and capacity-building fund could require another $US100 million ($A155 million) per year.

Threats to the ocean environment have been mounting in recent years as a result of overfishing as well as rising temperatures, and new threats could also emerge from ocean-bed mining and the use of geoengineering technologies to boost the ocean’s capacity to absorb carbon dioxide.

Environmental groups say the treaty must be brought fully into effect by 2025 at the latest to ensure the “30-by-30” protection target is reached.

“The ocean can’t wait, and with the treaty being in the making for the better part of the past 20 years, there is absolutely no time to waste,” said Jessica Battle, an ocean expert with the Worldwide Fund for Nature.

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