The world has lost more than half its wildlife since 1970

Worldwide populations of mammals, birds, fish, amphibians and reptiles have plunged by almost 60 per cent since 1970 as human activities overwhelm the environment, the WWF conservation group said on Thursday.

An index compiled with data from the Zoological Society of London to measure the abundance of biodiversity was down 58 per cent from 1970 to 2012 and would fall 67 per cent by 2020 on current trends, the WWF said in a report.

  • Is the world running out of wilderness?

The decline is yet another sign that people have become the driving force for change on Earth, ushering in the epoch of the Anthropocene, a term derived from “anthropos,” the Greek for “human” and “-cene” denoting a geological period.

Conservation efforts appear to be having scant impact as the index is showing a steeper plunge in wildlife populations than two years ago, when the WWF estimated there had been a 52 per cent decline between 1970 and 2010.

“Wildlife is disappearing within our lifetimes at an unprecedented rate,” Marco Lambertini, director general of WWF International, said in a statement of the group’s Living Planet Report, published every two years.

“Biodiversity forms the foundation of healthy forests, rivers and oceans,” he said.

“We are entering a new era in Earth’s history: the Anthropocene.”

The index tracks about 14,200 populations of 3,700 species of vertebrates — creatures ranging from pea-sized frogs to 30-metre long whales.

The rising human population is threatening wildlife by clearing land for farms and cities, the report said. Other factors include pollution, invasive species, hunting and climate change. But there are still chances to reverse the trends, it said.

wildlife populations

Biscuit, left, a baby male snow leopard, lives with his mother Shikari at the Bronx Zoo in New York City. Snow leopards live in the high mountains of Central Asia and the wild population is estimated to number in the low thousands. (Mario Tama/Getty)


“Importantly… these are declines, they are not yet extinctions,” said Prof. Ken Norris, the society’s director of science.

Deon Nel, WWF global conservation director, also told Reuters it wasn’t all bad news.

“I don’t speak at all about doom and gloom — we do see a lot of positive signs,” Nel said.

A global agreement signed by almost 200 nations last year to curb climate change could, for instance, help protect tropical forests, slow a spread of deserts and curb an acidification of the seas caused by a build-up of carbon dioxide. And a 2015 UN plan for sustainable development by 2030, seeking to end poverty with policies that safeguard the environment, would also help if properly implemented.

Some species are recovering. Last month, the giant panda was taken off an endangered list after a recovery in China.


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