Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Monarch Butterfly Biosphere Reserve' has mentioned 'Illegal logging' in the following places:
Occurrence Sentence Text Source
Reserve administrators continue to be concerned with deleterious effects of illegal logging and tourism.
[18] Within the Biosphere in Mexico, the greatest threats to the butterfly habitat are deforestation, illegal logging, unorganized tourism, forest fires and lack of cooperation among various authorities.
Some areas, such as Sierra Chincua, Cerro Pelon and El Rosario, still have problems with illegal logging to supply local fuel needs and raw materials for handicrafts.
Illegal logging is a known threat to the property with potential direct impacts on its Outstanding Universal Value.
The principal focus of protection and management should be to prevent illegal logging in the property.