The authorization of commercial logging in an area of the Nevado de Toluca reduced the population of monarch butterflies.
The monarch butterflies look for places to protect themselves in the winter season, and the Nevado de Toluca is one of the places where thousands of butterflies flee from bad weather. The Political Animal website reported that after 2013 and 2014 commercial logging was authorized in an area of the Nevado de Toluca, the lowest level of monarch butterflies that came to hibernate was recorded.
According to the portal two monarch butterfly colonies that arrive at the Nevado de Toluca, they have been detected since 2004 and according to these official reports, in 2012, the area occupied by the monarchs in the Nevado de Toluca covered a total of 1,300 square meters of forest.
Effects of felling
Animal Politico documents the decrease of the monarch population and found that it is directly linked to logging in the area. In the period from December 2013 to January 2014, when the commercial logging of the first 12,428 cubic meters of wood was authorized in the Nevado de Toluca, the hibernation area of monarch butterflies within this nature reserve decreased to reach 200 meters squares (a reduction of 85 percent from one period to another). According to official records, that was the lowest level of monarch butterflies of which one has a notion.
In 2015, the federal government reduced the area of felling compared to the previous year, and only one thousand 908 cubic meters of extracted wood were allowed. In that year, monarch butterfly colonies showed signs of recovery, going from 200 square meters occupied, to 900 square meters, an increase of 77 percent.
In the last season the new federal Government reported that from December 2018 to January 2019, the total population of monarch butterflies showed a recovery of 144 percent, going from 2.4 hectares to 6 hectares, in a single year. This increase coincides with the declaration of eradication of illegal logging in the Monarch Butterfly Biosphere Reserve. by 2018, logging was suspended in the protected area, but in the adjacent forests, it was authorized to cut down 147 thousand cubic meters of wood.