There are places where silence is made of colors that disappear. In the tropical forests of Brazil, butterflies are losing their light. Their wings, once a mosaic of blue, orange and red, now appear duller.
The biologist and photographer Roberto García-Roa, who has been documenting the life of tropical insects for years, told it in an interview with the British newspaper The Guardian: “The color of a butterfly’s wings is not just beauty”, he explains. “It’s communication, survival, balance. When the habitat loses complexity, nature’s palette also shrinks.”
Behind this change lies a bigger story. The forests of Brazil are progressively replaced by eucalyptus plantations, monotonous and simplified environments, hotter and drier than natural forests. In these uniform landscapes, the brightly colored butterflies – which need shade, humidity and a variety of plants to reproduce – can no longer survive. Only those with brown or gray tones remain, more suitable for a world that has become uniform.
Color as a language of life
For butterflies, color is a language: it is used to communicate, to court, to defend themselves. Every nuance has an evolutionary function, built over millions of years. When the colors fade, it means that something has stopped in the dialogue between the species and the environment.
Researcher Maider Iglesias-Carrasco, from the University of Copenhagen, explained to the English newspaper that in eucalyptus plantations “butterfly communities are dominated by brown species”. It is as if the landscape had sucked the light even from the insects.
The study conducted in the Brazilian state of Espírito Santo counted 31 species in native forests and only 21 in plantations, with a drastic reduction in color variety. But it’s not just about aesthetics: color is an indicator of ecological complexity. When the color gamut becomes smaller, it means the entire ecosystem is simplifying.
A world that loses its nuances
The phenomenon does not only concern butterflies. Scientists talk about “global discoloration”: coral reefs turning white, oceans taking on greener shades, even rainbows risking being less visible in polluted areas. The entire planet is becoming dimmer.
“Even observed from space, the planet appears more opaque,” underlined Ricardo Spaniol, of the Federal University of Rio Grande do Sul. “It’s a worrying sign of how connected natural processes are and how human pressure is extinguishing the Earth’s vitality.”
Returning color to nature
Despite the worrying picture, the research leaves room for hope. Scientists have observed that in Amazonian forests regenerated after decades of abandonment, the variety of colors of butterflies slowly grows again. Where vegetation recovers, nature rekindles its nuances.
Eucalyptus plantations – over 22 million hectares worldwide – are often perceived as “green”, but behind that uniform color lies a poor ecosystem. “Green is not enough to talk about nature,” explained García-Roa. “We need diversity, we need complexity. Only in this way can the forest shine again.”
