Nestled in the heart of the Peruvian Amazon is a natural phenomenon that attracts the attention of scientists: the Shanay-timpishka River, popularly known as the “boiling river“. This river reaches in some sections temperatures almost at the boiling point, a rarity that impacts both casual observers and biologists studying its effects.
Extreme temperatures in the Amazon River
The Shanay-timpishka is not only dangerous for the local fauna that falls into its boiling waters but also serves as a natural laboratory to study climate change. Recent research reveals that extreme temperatures impact the diversity of the jungle, where the variety of tree species decreases as the heat increases.
The name of the river is often translated as “boiled by the heat of the sun“, but the scientific reality is different. The heat comes from the interior of the Earth, where groundwater is heated deeply and emerges to the surface at specific points, reaching temperatures of up to 99.1 ºC, according to researchers Andrés Ruzo and the Boiling River Project.
This phenomenon does not occur due to direct volcanic activity, as the nearest volcano is hundreds of kilometers away. Instead, it is due to the circulation of rainwater that filters deeply, heats up, and returns to the surface.
For scientists, this unique environment allows observation of how global warming could affect tropical forests. The research team led by Riley P. Fortier and others observed significant changes in flora along a thermal gradient in the river. It was documented that for every 1ºC increase in the annual average temperature, the diversity of trees fell by approximately 11%.
The warmer areas are not deserted, but they are modified, favoring species that can tolerate the heat, while others become less common. This adjustment in biodiversity is not just a matter of nomenclature, as it directly affects how the ecosystem regulates water, humidity, and carbon.
Research in Functional Ecology also studied the acclimatization capacity of six woody species. While some showed improvement in their heat tolerance, these adaptations might not be sufficient in the face of increasingly frequent extreme episodes.
The Shanay-timpishka is more than a geological attraction; it is a reminder of the fragility of tropical forests in the face of climate change. As the Amazon faces challenges such as deforestation, this river visually warns us about the potential future of the jungle, highlighting the importance of taking action before it’s too late.
The complete study is documented in the journal Global Change Biology.
