In the San Sebastián de la Selva Private Reserve, a scientific team recorded a remarkable diversity of fauna. Consequently, the survey identified 759 specimens of 38 species of amphibians and reptiles, which could be endangered by the advance of exotic grasslands.
The study was conducted in Comandante Andresito, within one of the richest ecosystems in the country. However, the results also raised an environmental warning signal.
Despite the abundance recorded, the research showed a sharp decline in biodiversity in modified environments. Therefore, the advance of exotic grasslands emerges as a growing threat.
Four environments, four ecological realities
The research compared different scenarios within the Urugua-í-Foerster Biological Corridor. Firstly, the primary forest showed the highest level of diversity.
Additionally, the recovering forest showed positive signs of regeneration. Consequently, it managed to sustain levels of biodiversity close to the original environments.
On the other hand, the chilca shrubland presented intermediate conditions. Likewise, it offered refuge for various species, although with certain limitations.
In contrast, the exotic grassland was the most impoverished environment. Therefore, it recorded the lowest number of species and specimens.
The silent impact of land use changes
The replacement of the forest by grasslands profoundly transforms the ecosystem. Consequently, refuges and available resources are reduced.
Additionally, the loss of water bodies directly affects amphibians and reptiles. Therefore, essential life cycles are disrupted.
Likewise, the homogenization of the landscape limits biological diversity. In this way, only more resistant species survive.
This process not only reduces the amount of fauna. Thus, it also weakens the recovery capacity of the ecosystem.
Biodiversity in numbers: a wealth at risk
During six campaigns between 2019 and 2023, researchers surveyed 21 species of amphibians and 17 of reptiles. Additionally, snakes, lizards, a turtle, and an amphisbaena were identified.
However, the difference between environments was striking. Consequently, the native sectors far surpassed the exotic grassland.
While the conserved environments recorded more than 24 taxa, the grassland barely reached nine. Therefore, the decline in diversity is significant.
Likewise, the distribution of species was also affected. Thus, the modified ecosystems present less balance.
Conservation and restoration: keys to reversing the trend
Specialists highlight the importance of preserving native environments. Firstly, protected areas serve as biodiversity refuges.
Additionally, restoration processes allow for the recovery of some lost balance. However, these are slow processes.
Likewise, constant monitoring is fundamental. Therefore, it allows for the design of more effective strategies.
In this context, stopping the advance of exotic grasslands becomes a priority. In this way, the natural heritage of the region is protected.
The biodiversity of Misiones: a unique ecological treasure
The Paranaense Forest represents the most biodiverse ecosystem in Argentina. In this sense, it hosts thousands of species of flora and fauna.
Additionally, its humidity, temperature, and vegetation conditions favor a great variety of life. Therefore, it is key to the regional ecological balance.
Likewise, it plays a fundamental role in climate regulation and water conservation. Consequently, its preservation is strategic.
However, human pressure threatens its integrity. Thus, protecting it means safeguarding one of the last great green lungs of the country.
