According to a new study, the global expansion of hydroelectric dams has had a severe impact on tiger and jaguar ecosystems. Dam construction, primarily in Asia, has destroyed more than one-fifth of the world’s remaining tigers, according to studies. Tiger extinction is supposed to have occurred as a result of the dams in various local wooded areas. Dams on their ranges are expected to triple, putting jaguars in grave danger.

In the modern world, tigers have not fared well. Despite their iconic and scary reputation, the animals have gone from over 90% of their native range in the previous century. Despite recent population increases, the International Union for Conservation of Nature (IUCN) still considers them as an endangered species, having a population of around 3,500. A similar story may be found with the jaguars. The range of these thin carnivores has been reduced by half, from the southwest of the United States to Argentina.

They assessed the number of forest areas flooded to generate reservoirs for the dams and concluded that about 13,000 square kilometers of tiger habitat had been flooded. This is thought to have had a significant effect on tiger populations. That forest was broken up into smaller areas as a result of the creation of a big reservoir smack in the middle of the region, and those tigers were often unable to survive in that fragmented forest habitat.