Thu, Oct 02, 2008 - Page 14 News List

[ENVIRONMENT] In Italy, a redesign of nature to clean it up

lan Berger, a landscape architect at MIT, is designing a wetland to cleanse polluted water before it flows to residential areas and the sea

By Elisabeth Rosenthal  /  NY TIMES NEWS SERVICE , TERRACINA, ITALY

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Before Michele Assunto hauls in his fishing net from the banks of a reed-lined canal here, he uses a pole to push the garbage out of the way. “They really need to clean this up,” he growls.

Where another canal empties into the sea here at the small community of Porto Badino, the only animals that can survive are giant rats, local officials say. Of course, the sea is not fit for swimming for 183m on each side of the outlet, they add with a shrug — yet bathers splash in the Mediterranean nearby.

In many parts of this affluent coastal region southeast of Rome and northwest of Naples, canals dumping effluent into the Mediterranean from farms and factories coexist with fishermen and beachgoers. There is little doubt that this area would need considerable work to return to a more pristine state. For places as far gone as this one, however, a new breed of landscape architects is recommending a radical solutiAon: not so much to restore the environment as to redesign it.

“It is so ecologically out of balance that if it goes on this way, it will kill itself,” said Alan Berger, a landscape architect at MIT who was excitedly poking around the smelly canals on a recent day and talking to fishermen like Assunto.

“You can’t remove the economy and move the people away,” he added. “Ecologically speaking, you can’t restore it; you have to go forward, to set this place on a new path.”

Designing nature might seem to be an oxymoron or an act of hubris. But instead of simply recommending that polluting farms and factories be shut, Berger specializes in creating new ecosystems in severely damaged environments: redirecting water flow, moving hills, building islands and planting new species to absorb pollution, to create natural, though “artificial,” landscapes that can ultimately sustain themselves.

Berger, who is the founder of P-Rex, for Project for Reclamation Excellence, at the institute in Massachusetts, recently signed an agreement with the province of Latina to design a master ecological plan for the most polluting part of this region.

He wants the government to buy a tract of nearly 202 hectares in a strategic valley through which the most seriously polluted waters now pass. There, he intends to create a wetland that would serve as a natural cleansing station before the waters flowed on to the sea and residential areas.

Of course, better regulation is also needed, to curb the dumping of pollutants into the canal. But a careful mix of the right kinds of plants, dirt, stones and drainage channels would filter the water as it slowly passes through, he said. The land would also function as a new park.

Berger was quick to acknowledge that the approach is vastly different from the kind normally advocated by established environmental groups like the World Wildlife Fund or the Nature Conservancy, which generally seek to restore land or preserve it in its natural state, often by closing down or cleaning up nearby polluters. In the Florida Everglades, for example, the state is buying and closing a sugar plant to preserve the environment. But that approach may not work in places that are already severely degraded, Berger said.

“The difference between me and WWF is that when I look at this place, I never think about going back,” he said, referring to the wildlife fund. “The solution has to be as artificial as the place. We are trying to invent an ecosystem in the midst of an entirely engineered, polluted landscape.”

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