Celebrating Biodiversity In Cusco:
A Living Treasure Of Peru

Every May 22, the world comes together to celebrate the International Day for Biological Diversity—a moment to reflect on the intricate web of life that sustains our planet. In Peru, this day holds profound significance. As one of the world's 17 megadiverse countries, Peru is home to a staggering array of ecosystems and species [1]. From the arid coastal deserts to the lush Amazon rainforest, the country's diverse landscapes harbor an estimated 10% of the world's species, including over 25,000 plant species and more than 1,800 bird species [2,3].

At the heart of this natural wealth lies Cusco, a region that epitomizes Peru's ecological richness. Beyond its renowned archaeological sites, Cusco's varied altitudes and climates create a mosaic of habitats teeming with life. From cloud forests to high-altitude grasslands, the region's biodiversity is both a national treasure and a global asset.

Cusco: A Biodiversity Hotspot

Cusco is often seen through the lens of its ruins—but step beyond the stone walls of Machu Picchu, and you'll find a region alive with one of the most astonishing biodiversity concentrations on the planet. Its dramatic topography—rising from low Amazonian edges to glacial Andean summits—creates a natural corridor where species from vastly different ecosystems coexist, evolve, and thrive.

This altitudinal range supports ecosystems as varied as humid montane cloud forests, puna grasslands, high-Andean wetlands (bofedales), and sub-tropical valleys. Each is home to species that have adapted to extremely specific microclimates, many of which are found nowhere else on Earth. These aren’t isolated islands of life—they are deeply connected to the rhythms of local communities who have safeguarded them for generations.

One of the most iconic examples is the Manu Biosphere Reserve, which spans both Cusco and Madre de Dios. Recognized by UNESCO, it is considered one of the most biodiverse areas on the planet. In just a single hectare, scientists have recorded more than 250 tree species. Manu shelters over 1,000 bird species, 200 mammal species, and countless insects, orchids, frogs, and felines—including the elusive jaguar and endangered giant river otter [4,5,6,7]. What makes it extraordinary is not just its biological richness, but the presence of Indigenous communities who live in balance with the forest, honoring its rhythms.

Closer to the heart of Cusco, the Chuyapi Urusayhua Regional Conservation Area protects high-altitude cloud forests where the sword-billed hummingbird flits among rare orchids and spectacled bears roam the fog-laced understory. Of the 74 endemic species recorded here, 22 are exclusive to Cusco, making this one of the most important conservation corridors in the southern Andes [8].

Further southeast, the Marcapata Ccollana Agrobiodiversity Zone protects not only wild species but centuries of traditional farming knowledge. Here, Quechua-speaking communities still cultivate native tubers—like oca, mashua, and over 200 varieties of native potatoes—at altitudes over 3,800 meters. These ancestral food systems are living banks of genetic resilience in the face of climate change.

Other protected areas like the Megantoni National Sanctuary and the Ausangate ecological corridor shelter species such as the Andean condor, vicuñas, rare frogs, and highland foxes. But perhaps most remarkable is that much of Cusco’s biodiversity doesn’t live inside protected parks—it lives in people’s pastures, potato fields, sacred lakes, and highland trails. Here, conservation isn’t an abstract idea—it’s embedded in everyday life.

When Ecosystems Break: Plastic and the Quiet Collapse of Life

Biodiversity isn’t just a collection of rare plants and exotic animals—it’s the invisible infrastructure that keeps our world breathing. In places like Cusco, biodiversity makes life possible. Birds pollinate native crops. Insects regenerate soils. Wetland grasses filter water for entire communities. Each species, no matter how small, plays a role in maintaining the delicate balance of mountain ecosystems. But this balance is under threat.

While Cusco’s landscapes seem untouched from afar, their ecosystems are increasingly vulnerable to modern pressures. Among the most insidious of these is plastic pollution. From marketplaces in the city to trails deep in the Andes, single-use plastics find their way into rivers, wetlands, and soils. They choke waterways, entangle wildlife, and break down into microplastics that are absorbed by plants, eaten by animals, and, eventually, consumed by us.

In aquatic ecosystems—like the Andean wetlands that support native birds and amphibians—plastic debris is often mistaken for food. A bottle cap or candy wrapper can kill a frog, fish, or even a young bird. And the effects go deeper: microplastics infiltrate the food web, disrupting reproduction and weakening species already stressed by climate change.

This is not a distant problem. In recent years, plastic waste has been documented near the borders of Manu and in communal pastures above Sacred Valley villages [9,10]. Even the most biodiverse places are not immune.

Combating this crisis means more than clean-ups. It requires rethinking consumption—from fast fashion and synthetic materials to food packaging and tourism waste [11]. The Andean vision of ayni teaches us reciprocity. What we give to nature, it gives back. If we pollute it, we poison ourselves.

Protecting Cusco’s biodiversity means protecting the intricate relationships that allow life to persist. And that begins with saying no to plastic—and yes to responsibility.

Protecting Cusco's Natural Heritage

The biodiversity of Cusco isn’t an abstract wonder—it’s a living legacy passed from one generation to the next. And like all living things, it needs care, intention, and protection.

Safeguarding this legacy doesn’t rely on one single solution. It’s a patchwork of efforts, stitched together by communities, educators, travelers, and producers who choose to walk gently on the land.

In many highland villages, conservation begins not with policies, but with people. When local communities are given the tools, space, and recognition to protect their territories, conservation becomes more than possible—it becomes personal. These are the same communities who know which wildflowers feed the pollinators, when to rotate grazing, and how to grow crops without exhausting the soil. Their knowledge, rooted in centuries of observation, is as critical as any scientific survey.

Tourism, too, holds power—not only to harm, but to heal. When travelers choose to move slowly, support local economies, and respect sacred trails, they create a different kind of footprint—one that nourishes instead of extracts. Eco-conscious travel can become a lifeline for communities seeking sustainable alternatives to extractive industries.

Education is the thread that binds it all. When young people in Cusco learn that the frog in their stream or the moss on their stones are part of a larger story—one that includes medicine, food, and ancestry—they grow up not only informed, but inspired to protect what’s theirs. And when travelers learn from them, that wisdom travels far.

Across the Sacred Valley, some are now turning to biodegradable materials, restoring native grasses, and embracing slow fashion—clothing made from natural fibers, free from plastic, and respectful of the cycles of nature. These small decisions, multiplied, shape a new kind of economy—one that honors biodiversity not as a trend, but as a truth.

Beyond Biodiversity Day: A Daily Choice

As the world honors the International Day for Biological Diversity, Cusco reminds us that protecting life isn’t just a matter for scientists or policies—it’s a daily choice. One made in markets, mountains, and meadows. One woven through every seed saved, every textile dyed with plants, every step taken in balance with the land.

Biodiversity isn’t a symbol of the past—it’s the fabric of the future. When we choose to live with intention—to walk gently, support natural materials, and value Indigenous wisdom—we’re not only preserving species. We’re keeping alive a way of seeing the world where everything is connected, and nothing is disposable.

In the Andes, that wisdom still breathes. And today, the most powerful way to honor biodiversity… is to live like it matters. Every day.

The future of biodiversity begins with them. Every act of protection today is a promise kept tomorrow.