The Spree Forest, a remote wetland south of Berlin, is a nature-lover's paradise known for its many narrow waterways. But researchers say the pristine region is in danger, blaming changes in climate and industry.
Gently down the stream: the Spree is popular with vacationers
The Spree River runs through the immense Spreewald Biosphere Reserve southeast of Berlin. It starts in the Lusatia region, near Poland, and is known for its traditional irrigation system consisting of 1,300 kilometers (800 miles) of small channels and waterways. Alder forests and wetlands alternate with sandy pine forests, grasslands and fields in a landscape that seems to have been little affected by the forces of modernity.
The Spree runs into the Havel, which becomes a feeder for the Elbe, eastern Germany's major waterway. While much of western Germany has been soaked with seemingly endless spring rains this year, folks in the Elbe valley have seen less precipitation.
Pear tree in Spreewald
"We in the Elbe catchment area find ourselves in a relatively dry area within central Europe," he said. "This lack of rain is becoming more and more noticeable," he said.
Culprit: brown coal
To make matters worse, climate change is only part of the story. The structural changes in what was once a brown coal region also play a large part.
When the brown coal mines were working, between 1950 and 1990, it took six tons of water to unearth every ton of brown coal. That means that during that time, gallons upon gallons of water were taken from Lusatia and pumped into the Spree. Without this infusion, the water level in the Spree's aquifer would sink to somewhere between one-fifth and one-tenth of what it has been for the past 50 years.
"That has consequences for the Spree Forest, for this valuable biotope, and it has consequences also for Berlin," Hansjürgens said. "There is really now a danger that the water table will recede if less water is pumped in from the brown coal regions. And that would lead to part of the Spree Forest disappearing over time."
Poor water quality
The problem did not end with the closing of the mines. Now, the strip mines that are left need to be flooded with fresh river water. Otherwise, the groundwater that would gather there would be extremely sulfurous and contaminated with toxins.
Ethnic culture along the Spree
There are a few options. First, planners may decide to flood the strip mines for a longer period of time. This would buy them time to deal with the changing situation -- but it would postpone the development of tourism in the region.
Another alternative would be to dry up of some of the Spree's small branch rivers, or Fliesse, and use that water to flood the strip mines. And a final possibility would be to bring water from the nearby Oder River into the Spree-Havel area. But the consequences such an action would have on all of the waterways must be researched in greater depth.
No one knows just yet what the best alternative is. But one thing appears certain: A part of the Spree Forest is destined to disappear.
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