In this file photo taken on June 28, 2018, the Jaraua river flows through the Miramar Sustainable Development Reserve in Amazonas State, Brazil. — AFP pic |
PARIS - More than
70 per cent of Earth’s last untouched wilderness lies in the territories of
just five countries, scientists said yesterday ― mostly nations that alarm
environmentalists with their lukewarm response to climate change.
True wild spaces ― land and sea areas mostly unaffected
by mankind’s explosive expansion and insatiable appetite for food and natural
resources ― now cover just a quarter of the planet.
They form vital refuges for thousands of endangered
species threatened by deforestation and overfishing, and provide some of our
best defences against the devastating weather events brought about by climate
change.
New research published in the journal Nature found that
nearly three quarters of the wilderness that’s left belongs to Australia,
Brazil, Canada, Russia, and the US.
“For the first time we’ve mapped both land and marine
wilderness and showed that there’s actually not much left,” James Watson,
professor of conservation science at the University of Queensland and lead paper
author, told AFP.
“A few countries own a lot of this untouched land and
they have a massive responsibility to keep the last of the wild.”
Researchers used open-source data on eight indicators of
human impact on wilderness, including urban environments, farm land and
infrastructure projects.
For oceans, they used data on fishing, industrial
shipping and fertiliser run-off to determine that just 13 percent of the
planet’s seas bore little or no hallmarks of human activity.
In a week when scientists warned that animals were being
driven to the brink of extinction by runaway consumption, the paper’s findings
that most remaining wilderness lies with just five nations will likely set
conservationists’ nerves on further edge.
Russia’s vast swathes of taiga forest and permafrost
contains trillions of trees that suck carbon from the atmosphere, tempering the
impact of greenhouse gas emissions.
But Russia has been vague in its conservation commitments
and President Vladimir Putin suggested last year that climate change was not
caused by humans.
‘Alarm bells’
President Donald Trump has said the US is leaving the
landmark Paris deal on climate change, and Brazil this week elected a
right-wing former army captain who has pledged to drawdown existing legal
protections for the Amazon rain forest.
The wilderness list sets off “alarm bells”, said Watson,
who is also director of the science and research initiative at the Wildlife
Conservation Society in New York.
But “there’s time to break the mould and show some
leadership. Because to sustain wilderness you just have to stop industry and
not allow people in,” he added.
Due to voracious human consumption of fossil fuels, wood
and meat, as well as our exploding population, just 23 per cent of land on Earth
is untouched by the impact of agriculture and industry.
A century ago that figure stood at 85 per cent. Between 1993 and 2009, an area of wilderness the size of
India was lost to human settlement, farming and mining.
The conservation group WWF warned this week that
mankind’s consumption had decimated global wildlife and triggered what is known
as a mass-extinction event.
In the last 40 years populations of fish, birds,
amphibians reptiles and mammals have plummeted, on average, by 60 per cent.
In their paper, Watson and his colleagues warned that
Earth’s wild places were facing “the same extinction crisis as species”.
“Similar to species extinction, the erosion of the wilderness is essentially irreversible,” they wrote. ‘Nature needs a break’
“Similar to species extinction, the erosion of the wilderness is essentially irreversible,” they wrote. ‘Nature needs a break’
As well as being havens for biodiversity, wildernesses
such as the boreal forest in northern Canada ― which acts as a carbon sink and
which is protected by federal law ― form mankind’s frontline protection against
runaway climate change.
“These areas are the places where many, many species
retreat to,” said Watson. “At the same time they have massive amounts of carbon
reserves.”
Scientists called for greater legislation to protect
other unspoilt areas from industry, and to reformat global finance initiatives
to provide incentives for forest protection.
“It requires nations to legislate and not let industry
in. Nature needs a break,” said Watson.
“We can’t just exploit everywhere and these nations still
have these strongholds of wilderness. I think the world would appreciate these
nations standing up and saying we’re going to look after these places.”
No comments:
Post a Comment