This Berlin building complex was renovated in the early 80s and is the site of a long-term monitoring project where Dr. Koehler and others have been collecting data on things like changes in the greenroof plant community. Perhaps you can see from this picture how different plants are thriving on roofs facing different directions. While we were there, a couple reported that they have sighted a local marten (the mammal) catching songbirds on the roof- they wanted to know if we saw any evidence of him. None was seen...
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