Sign in with Facebook
  • Facebook Page: 128172154133
  • Twitter: EarthProtect1

Posted by on in Lakes/Rivers/Wetlands
  • Font size: Larger Smaller
  • Hits: 88
  • 0 Comments

Bringing the world’s buried wetlands back from the dead

Shared from the 11/6/2019 The Denver Post eEdition

“YOU CAN’T REALLY BEAT A POND”By Matthew Brown and James Brooks The Associated Press HINDOLVESTON, ENGLAND» The ghosts are all around the gently rolling farmlands of eastern England. But you have to know where to look. These are not the kind of phantoms that scare or haunt — they are ghost ponds. Over the years, landowners buried them, filling in wetlands so they had more land for planting crops and other needs, or let their ponds fade away with neglect. Along with those ponds, they erased entire ecosystems — and contributed to the decline of wetlands worldwide.

The result: an array of environmental calamities, ranging from rising floods to species hurtling toward extinction.

There are some who are trying to reclaim these lost waterbodies. In eastern England, a motley team of farmers, university researchers and conservationists is digging into the region’s barley and wheat fields to turn back the clock.

With chain saws, an excavator and plenty of sweat, it takes just a few hours to resurrect one dying pond near Hindolveston, a thousand-year-old village not far from the North Sea. They fell trees and shrubs, then start digging until reaching their goal: an ancient pond bottom that once supported insects, aquatic plants and the birds and animals that feed on them.

“As soon as they get water and light, they just spring to life,” said Nick Anema, a farmer in nearby Dereham who has restored seven ponds on his property. “You’ve got frogs and toads and newts, all the insects like mayflies, dragonflies, damselflies. ... You can’t really beat a pond.”

But the battle for the wetlands is a struggle. While efforts are underway to stem losses and regain some of what’s been lost, wetlands around the world continue to be filled in and plowed over.

Almost 90% of the world’s wetlands disappeared over the past three centuries, according to the Ramsar Convention, an organization formed around a 1971 treaty to protect wetlands. And the losses have accelerated since the 1970s.

The consequences are profound — wetland-dependent species threatened with extinction, more severe flooding and the release of huge amounts of the greenhouse gas carbon dioxide.

Climate change threatens to worsen the problem. Warmer temperatures and changing rainfall patterns can trigger drought, leading to more pumping of water reserves that would otherwise feed surface wetlands, scientists say.

“We now know the value of wetlands, and we know with increasing precision how many wetlands we’re losing. The next step is for the governments to act,” said Royal Gardner, director of the Institute for Biodiversity Law and Policy at Stetson University in Florida.

But to North Dakota farmers, these wetlands carved into the earth by glaciers some 10,000 years ago can be an adversary. They bog down tractors and can kill young crops, leaving patches of lifeless stalks.

Some farmers steer around them, planting in swirling patterns to avoid wet areas. Other times, the wetlands are removed, often to make way for corn.

Despite their mind-boggling numbers — several million potholes are spread across a region that covers portions of five states and three Canadian provinces— these wetlands are steadily blinking out. One by one, they’re being drained or plowed under.

Only human-made wetlands buck the trend toward global decline. Rice paddies, reservoirs and agricultural stock ponds all increased in acreage since the 1970s, according to Ramsar.

Barton Schott, a third-generation farmer in the small community of Kulm, N.D., recently installed networks of perforated pipes beneath some of his fields to drain off the standing water. He must offset the losses under federal regulations, installing a berm across a low area in different field to create a small pond.

The guiding principle is to have “no net loss” of U.S. wetlands. A similar tactic has been adopted in China.

Yet in both nations, scientists are concerned that the approach papers over significant differences between natural wetlands and those created by humans. That’s because constructing ponds or reservoirs with water year-round doesn’t fulfill the same ecological role as the smaller wetlands they replace.

“People brag about the fact that there’s been no net loss. But what they’ve done is destroy natural wetlands and created artificial ones,” said Stuart Pimm, a Duke University professor.

 

Comments

81595f2dd9db45846609c618f993af1c

© Earth Protect