Costa Rica is saving forest ecosystems by listening to them


Monica was Retamosa In the middle of changing sound recording batteries when he first heard. Standing on a forest floor, he looked at the trees and scanned a powerful metal sound source and was searching for the bird for half an hour. Belbird sings from Tieteops, which is visible to his peers but is invisible for the following. However, Retamosa smiled: He listens to the ecosystem in the Biological Corridor of Amistosa Costa Rica.

In nature, living things use sound for almost everything. They call to attract spouses, communicate with identity, warn of risks, guidance, and assist hunting or defense. For decades, researchers have been pursuing and still doing species with the recording, although they are increasingly using remote recorders. The study of the organisms of the voices they create is known as biological. Retamosa has been doing this for 10 years.

Using biological recordings, studies have shown that some birds are shouting loudly to hear themselves in the cities and communicate with sea turtles from the nest to coordinate their incubation. And when biological combined with other sounds – it can be interpreted by human beings, as well as natural sound sounds such as the accident in the sea – to interpret the deeper environmental meaning. It is possible to monitor changes in biodiversity, identify threats and measure the effectiveness of protection strategies. This broader analysis of sound is known as ecoacost – and exactly what is done here in Costa Rica.

A peak on a branch.

A three -connected boulevard (Prociast tricarunculatus) In Costa Rica.

Photo: Juan Carlos Windas/Giti Pictures

Retamosa has been working at the National University of Costa Rica for 20 years at the International Institute of Wildlife Conservation and Management. He uses biological and echochiology to investigate the sounds of this small Central American country that hosts more than half of the million species.

Retamosa says, “The sounds are forgotten from the perspective of protection.” “Most of the time, we hear more than we see. It is likely that when a system disorder occurs, we can identify it sooner by sound or absence.”

The development of automatic recording has revolutionized biotics and the environment. Now, research groups can hang sensors that record the day -to -day parts for months at a time without interference in wildlife. Retamosa loves this strategy because it is for non -invasive animals, listening to ears in large areas and difficult places and sometimes helping to discover mysterious species.

Although he prefers to monitor the ecosystems from a distance, Retamosa still has to go deep into the forest to adjust the recorders. Visiting this area is attractive, but it’s never a Sunday stroll. He, along with his colleagues, Jimmy Baran and Randal Jimens Miles, have been walking through flowers and branches. They have gone up and down the slopes. Once, he fell and broke his ribs. But the installation does not end: they need to go back to change the batteries and memory cards. In other countries, they use solar panels and the Internet to receive real -time data. In the rainy, humid and humid forests of Costa Rica, it is still done by hand.

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