As Forests Are Cut Down, Butterflies Are Losing Their Colours

Deforestation is draining color from butterfly populations in Brazil. Researchers studying butterflies in the state of EspÃrito Santo found 31 species in natural forests but only 21 in eucalyptus plantations. The plantation communities were dominated by brown-colored species. Roberto GarcÃa-Roa, part of the research project, said the colors on butterfly wings have been designed over millions of years.

Lead researcher Maider Iglesias-Carrasco from the University of Copenhagen observed a general feeling of emptiness in the plantations. Ricardo Spaniol from the Federal University of Rio Grande do Sul discovered in 2019 that the most colorful Amazonian species often disappear first after deforestation, probably because of the loss of native vegetation and increased exposure to predators. Eucalyptus plantations cover at least 22 million hectares around the world. Spaniol's research found that forested Amazon habitats regenerating for 30 years after use as cattle pasture showed a remarkable increase in butterfly color diversity.

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