TheTravellers
01-20-2015, 04:10 PM
Not surprised that butterflies are losing...
40 Years Ago the World 'Discovered' Mexico's Monarch Habitat -- Today Its Survival Is at Stake | Homero Aridjis (http://www.huffingtonpost.com/homero-aridjis/mexico-monarch-survival_b_6501656.html)
"In 1996, the butterfly population in the Monarch Butterfly Biosphere Reserve was estimated at one billion, occupying 21 hectares of forest.
The 2013-2014 population plummeted to 33 million, covering 0.67 hectares, the lowest ever in the 20 years since measuring and counting began.
The main culprit for this precipitous decline is no longer logging in the reserve (although that still takes place) but the huge increase in land planted with genetically modified, herbicide resistant soybean and corn crops (93 percent of total soybean acreage and 85 percent of corn acreage in 2013) in the U.S. Corn Belt. Relentless spraying of glyphosate herbicides on the fields has destroyed the once abundant milkweed, the only plants that monarch caterpillars can eat. The monarch butterfly is literally being starved to death."
40 Years Ago the World 'Discovered' Mexico's Monarch Habitat -- Today Its Survival Is at Stake | Homero Aridjis (http://www.huffingtonpost.com/homero-aridjis/mexico-monarch-survival_b_6501656.html)
"In 1996, the butterfly population in the Monarch Butterfly Biosphere Reserve was estimated at one billion, occupying 21 hectares of forest.
The 2013-2014 population plummeted to 33 million, covering 0.67 hectares, the lowest ever in the 20 years since measuring and counting began.
The main culprit for this precipitous decline is no longer logging in the reserve (although that still takes place) but the huge increase in land planted with genetically modified, herbicide resistant soybean and corn crops (93 percent of total soybean acreage and 85 percent of corn acreage in 2013) in the U.S. Corn Belt. Relentless spraying of glyphosate herbicides on the fields has destroyed the once abundant milkweed, the only plants that monarch caterpillars can eat. The monarch butterfly is literally being starved to death."