Total number of UNESCO Biosphere Reserves Mixed Sites: 0 (2019)
This description provides information about the total number of UNESCO Biosphere Reserves Mixed Sites as of 2019. According to the data, there are currently 0 UNESCO Biosphere Reserves Mixed Sites in existence.
The Monarch Butterfly Biosphere Reserve is a World Heritage Site containing most of the overwintering sites of the eastern population of the monarch butterfly. The reserve is located in the Trans-Mexican Volcanic Belt pine-oak forests ecoregion on the border of Michoacán and State of Mexico, 100 km, northwest of Mexico City. Millions of butterflies arrive in the reserve annually. Butterflies only inhabit a fraction of the 56,000 hectares of the reserve from October–March. The biosphere's mission is to protect the butterfly species and its habitat.