The world knows almost two-thirds of amphibians

About a third of the total number of amphibians has not been discovered, according to a recent study by scientists from Princeton University (USA).

Photograph of a Taipei tree frog climbing on a leaf in July 2010. Photo: Reuters.

In the new report, Princeton University scientists estimate that 3,050 amphibian species, including frogs, toads, salamanders and newts, have yet to be discovered. According to Reuters news agency , until now, science has discovered 6,296 amphibian species.

In addition, the researchers conjectured, at least 160 species of terrestrial mammals have not been discovered, accounting for about 3% of the total 5,398 mammals from elephants to mice known. .

' Most new animals are discovered in the rainforests. These areas are mainly concentrated in the Amazon, Congo Bay and Papua Islands , 'said Dr. Xingli Giam, head of research.

The team estimates the number of undiscovered animals based on factors including the rate of discovery of new animals to date and the area of ​​unexplored forests. However, scientists are concerned, many animals may become extinct before they are discovered. The reason is that, new animals known in recent years tend to be rarer and live only in a small range.

Previous studies have also shown that actions to undermine human habitats such as deforestation for agricultural crops and building houses, climate change, environmental pollution, . are threatening biodiversity.