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Unspoiled lands disappearing from face of the Earth at an alarming pace, finds Study

The wilderness losses in the past two decades make up a combined area about half the size of South America's vast Amazon region

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FILE - An overview of the Cascade Range inside the North Cascades National Park near Marblemount, Wash., near the Canadian border. A quarter of the planet's land surface remains wilderness, conservationist James Watson says. Source: VOA
  • Only 11.6 million square miles remain worldwide as biologically and ecologically intact regions without notable human disturbance
  • The wilderness losses in the past two decades make up a combined area about half the size of South America’s vast Amazon region
  • “We are running out of time and we are running out of space.” says conservationist James Watson 

Unspoiled lands are disappearing from the face of the Earth at an alarming pace, with about 10 percent of wilderness regions — an area double the size of Alaska — lost in the past two decades amid unrelenting human development, researchers said Thursday.

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South America, which lost 30 percent of its wilderness during that period, and Africa, which lost 14 percent, were the continents hardest hit, they said. The main driver of the global losses was destruction of wilderness for agriculture, logging and mining.

The researchers’ study, published in the journal Current Biology, was the latest to document the impact of human activities on a global scale, affecting Earth’s climate, landscape, oceans, natural resources and wildlife.

The researchers mapped the world’s wilderness areas, excluding Antarctica, and compared the results with a 1993 map that used the same methods.

They found that 11.6 million square miles (30.1 million square kilometers) remain worldwide as wilderness, defined as biologically and ecologically intact regions without notable human disturbance. Since the 1993 estimation, 1.3 million square miles (3.3 million square kilometers) of wilderness disappeared, they determined.

Amazon Manaus Forest. Image source: Wikimedia Commons
Amazon Manaus Forest. Image source: Wikimedia Commons

‘Shocking implications’

“This is incredibly sad because we can’t offset or restore these places. Once they are gone, they are gone, and this has shocking implications for biodiversity, for climate change and for the most imperiled biodiversity on the planet,” said conservationist James Watson of the University of Queensland in Australia and the Wildlife Conservation Society in New York.

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The wilderness losses in the past two decades make up a combined area about half the size of South America’s vast Amazon region.

Watson, who led the study, said about a quarter of the planet’s land surface remains wilderness, particularly in central Africa, the Amazon region, northern Australia, the United States, Canada and Russia. The losses in the past two decades were most acute in the Amazon region and central Africa.

“We need to focus on quality of habitat and keeping some places on Earth that are largely untouched by us,” Watson said. “We are running out of time and we are running out of space.” (VOA)

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Sambhar Lake Becomes Death Bed for Large Number of Birds

The excessive salt in the water led to the poisoning, causing hypernectremia, which is water deprivation due to sodium intoxication

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Sambhar Lake
After witnessing drought for many years, this year the Sambhar Lake, however, brimmed with water due to heavy rains. The inflow made the water toxic due to the change in its alkalinity. Pixabay

A deadly game of survival is on in the Sambhar lake of Rajasthan for decades — salt versus birds. The result came a few days back: thousands of birds were seen floating dead in the lake and their carcasses scattered on the edge of the 12 km catchment area.

The dead birds seen floating in this largest inland salt lake in the country, include plovers, common coot, black winged stilt, northern shovelers, ruddy shelduck, and pied avocet among many other migratory birds.

Harsh Vardhan, a renowned environmentalist, told IANS that no forest department official has ever been appointed to look after the lake. The lake comes under the Hindustan Salt Limited, a public limited enterprise formed in the post independence era to manufacture salt. Its job is to manufacture salt. So who should look after the lake; this has never been decided, he said.

The lake has not been handed to the forest department, and the area, where birds come, is no one’s land. Sambhar lake may be a part of the Hindustan Salt Ltd, but the company has nothing to do with the birds, he says.

The chief wildlife warden Arindam Tomar has maintained silence over the issue.

Even, Principal secretary, forest and environment Shreya Guha has washed her hands off the issue. All that she did was to a give statement that the Jaipur and Nagaur District Collectors have been asked to remove the bodies. She added that 4,800 birds have been dead till date, which is disputed by experts like Harsh Vardhan, who say that counting is not easy in the vast area.

Chief minister Ashok Gehlot on Thursday held a meeting on the issue.

Sambhar Lake
A deadly game of survival is on in the Sambhar Lake of Rajasthan for decades — salt versus birds. Pixabay

Meanwhile, Harsh Vardhan questioned the presence of several private salt miners and entrepreneurs, who have set shops in and around the lake. “They dig tube wells which suck water from the land making it parched. The remaining water gets evaporated leaving crystal of salts which are packed and sold in gunny bags,” he said.

Lack of water and drought has haunted Sambhar lake for years. State government has been spending huge money to woo tourists through activities like mobiking, balloning, race, Bollywood shoots, etc. A resort on the rim of the lake showcases salt manufacturing for the tourists. Crores of Rupees have been spent on the upkeep of the narrow gauge train and watch stations, but birds and conversation issues were always overlooked.

As Sambhar lake went dry, concentration of salt deposits came up within it. The water from surrounding rivers, meant to flow into the lake, was diverted by the miners.

After witnessing drought for many years, this year the lake, however, brimmed with water due to heavy rains. The inflow made the water toxic due to the change in its alkalinity.

The excessive salt in the water led to the poisoning, causing hypernectremia, which is water deprivation due to sodium intoxication, Vardhan said.

It seems birds which came in high numbers due to high water quantity this season died due to hypernectermia after consuming their feed which is the planktons, the microrganisms found in water.

Sambhar Lake
The dead birds seen floating in this largest inland salt lake i.e Sambhar Lake in the country, include plovers, common coot, black winged stilt, northern shovelers, ruddy shelduck, and pied avocet among many other migratory birds. Wikimedia Commons

The only step that has ever been taken by any government in the state was in 1981 when it was decided to designate the site as wetland and was renamed as the Ramsar site.

According to an estimate, around 60,000 birds visited the lake in a year which has come down to less than 20,000.

Vardhan says that if the lake remains with the Hindustan Salt Limited, which has been a loss making unit since years or if it is handed over to the private operators, who do excessive mining of water, then the lake and the birds are sure to die.

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Experts like him want the lake to be handed over to the forest department which can develop it as a wetland. (IANS)