The year 2015 was a warning for Titicaca, the lake that straddles the border between Peru and Bolivia at 3,800 metres above sea level. Over the course of the year, thousands of giant Titicaca water frogs (Telmatobius culeus), fish and birds washed up dead on the Bolivian side of the lake, South America’s second largest.
“It was a wake-up call of what could also happen to us,” recalls Vilma Paye, 48, a women who lives in Sampaya, an Aymara indigenous community on Titicaca’s Bolivian shores.
That same year, Lake Poopó, which is connected to Lake Titicaca by the Desaguadero River, dried up completely. Disaster followed months later, when another 10,000 giant frogs died on the Coata River, a tributary which flows into the Peruvian part of the lake.
It was a crisis foretold. “Our grandparents said the climate was going to change and also that some species would become extinct, but we never believed it,” says Paye, one of 50 indigenous leaders in the Mujeres Unidas en Defensa del Agua (Women United in Defence of Water), a network created in 2016 to save Titicaca from pollution.
“It is alarming that we ourselves are polluting it, because this is going to cause us to become extinct – just like the giant frogs,” she adds.
A symptom of the crisis
What is happening to this endangered aquatic amphibian is a symptom of the degradation of the world’s highest navigable lake. Wastewater discharges and waste from homes, hospitals and mining operations are polluting Titicaca and its entire basin, from the Desaguadero River to Lake Poopó.
“We can feel what this is causing, because we [women] are the heads of the household and we use water for everything,” says Paye.
Paye joined Mujeres Unidas in 2020. Together with Aymara and Quechua women defenders, she collects plastic bottles and bags from Titicaca’s shores, raises awareness among young people in schools, talks to the authorities and even measures the quality of the water in order to heal her ancestral lake.
A refuge in captivity
After the mass die-offs of frogs in 2015, an emergency team rescued the survivors in Wiñaymarka, the southern portion of Lake Titicaca, to keep them at the K’ayra Centre, the only facility in Bolivia dedicated to protecting threatened amphibian species.
“Because they have such permeable skin, frogs are sentinels of our environment,” says biologist Teresa Camacho Badani, who is in charge of the research and conservation centre in Cochabamba, some 430 kilometres from the Wiñaymarka Lake.
During their rescue, the Titicaca frogs went through something of an odyssey once they left the lake. The team evacuated 35 amphibians from the polluted waters by plane, with support from the International Union for Conservation of Nature (IUCN) and Amphibian Ark, among other organisations. They then undertook an overland journey to the K’ayra Centre and finally settled in a conditioned container where no pollutants enter and a control system simulates the temperature and daylight hours of their natural habitat.
This refuge is part of the Alcide d'Orbigny Natural History Museum in Cochabamba, which was declared a National Heritage Site in 2014. To date, it houses 450 individuals belonging to five species of the genus Telmatobius – native to the Andes – such as the giant Titicaca frog, as well as two terrestrial species, including the glass frog (Nymphargus bejaranoi), which had not been seen in 17 years.
Guardians of the species
In the community of Perka Norte, located on Peru’s Titicaca coast, there is still hope for the giant frogs. In 2017, a scientific mission from Denver Zoo in the US, the Cayetano Heredia University in Lima and Peruvian non-profit organisation Natural Way surveyed 13 spots in the lake. In most, there were no frogs. At some sites, only one to four frogs were found in 100-metre transects; at Perka Norte, however, the number was as high as 20 frogs.
In addition to pollution, the biggest threat facing this Titicaca amphibian is its trafficking for its use and sale as the main ingredient in green “frog juices” in cities, such as Lima, due to popular beliefs about its supposed healing properties. In fact, it is the most trafficked species in Peru, according to an investigation by InSight Crime, accounting for more than 50% of the 20,000 animals seized by authorities between 2015 and 2020.
For this reason, after the findings of 2017, Natural Way continued with a population density study of the Titicaca frog, in collaboration with the Perka Norte community.
“We came to understand that if at some point they were offered money to extract frogs, they were going to do it because they didn’t feel much affection for them,” says the researcher.
In this respect, community leader Chicani is firm: “We don’t allow that here. Environmental education with the community – and especially with children and young people – was a central strategy to conserve this aquatic amphibian.”
Chicani reports that traffickers have arrived in cars asking where they could find frogs. “Sometimes we see boats coming, we take pictures of them and pass the word to the authorities,” she says. “But we have chased them away.”
Other endangered species
The ecological disaster at Lake Titicaca is wiping out other native species, such as the Titicaca grebe (Rollandia microptera). In 2019, 119 of these flightless waterbirds were found dead in Suchipujo, on the Peruvian side. “The species that are dying are endemic and, therefore, indicators of any change in the quality of the lake,” says biologist Quispe.
In the last three decades, Titicaca, with a total area of over 8,200 square kilometres, has lost 90% of native fish species mainly due to overfishing and pollution, according to a recent diagnosis by the Binational Autonomous Authority of Lake Titicaca. An estimated 20 species of Orestias, a genus of fish, have become extinct over the past six decades, while another six are on the brink of extinction.
A future in the lake
For the frogs at the K’ayra Centre to return to Titicaca, the ecosystem conditions must be made safe again. To release them now “would be to condemn them to die”, laments the herpetologist Camacho.
In this vein, its defenders are seeking to have Lake Titicaca declared a subject with legal rights in Peru. This recognition was granted last year in Bolivia, due to the risk of “the disappearance of all forms of animal and plant life that live in its bed and banks”.
This article was published as part of Comunidad Planeta, a project led by Periodistas por el Planeta (PxP) in Latin America, of which Diálogo Chino is a partner.