In January 1977 it was made an international biosphere reserve.

The area of the biosphere reserve was extended in 2001.

The natural park was declared a biosphere reserve in 1977.

To date, there are 580 biosphere reserves in 114 countries.

The park was designated an international biosphere reserve in 1976.

The island was recently protected as a biosphere reserve again by the above groups.

The biosphere reserve is one of the biggest forests in Europe.

Three main functions are expected from an urban biosphere reserve.

It was declared a biosphere reserve in 2000 (309 km2).

While the federal government proclaimed these areas as biosphere reserve, legal title has not changed.