Good and bad news. The federation revealed Thursday that wild tigers are 40% more numerous in the world than previously thought, and the Tigris tiger population appears to be “steady or even increasing,” even if it remains an endangered species. .
On the other hand, the migratory monarch butterfly, a majestic butterfly capable of traveling thousands of kilometers every year to breed, is now joining the IUCN Red List, mainly due to climate change and the destruction of its habitat.
Between 3,726 and 5,578 tigers live in the wild
The last assessment of the world’s population of tigers living in the wild dates back to 2015 and the new census estimated the number of this elegant subspecies with orange-black-striped fur between 3,726 and 5,578. The 40% jump “is explained by improvements in tracking technologies, showing that There are more tigers than previously thought, and the number of tigers in the world appears to be stable or increasing,” the International Union for Conservation of Nature wrote in its update of its Red List of Threatened Species, which notes.
“Population trends indicate that projects such as the IUCN Integrated Tiger Habitat Conservation Program are effective and recovery is possible as long as conservation efforts continue,” notes the International Union for Conservation of Nature, which has more than 1,400 member organizations. However, the tiger is not out of the jungle and remains an endangered species. The International Union for Conservation of Nature notes that “major threats include tiger poaching, poaching and hunting for their prey, as well as habitat fragmentation and destruction due to increasing pressures from agriculture and human settlement.”
On the other hand, the migratory monarch butterfly, a subspecies of the monarch butterfly (Danaus plexippus) has seen its North American population decline “by between 22% and 72% over the past decade,” notes the International Union for Conservation of Nature.
“The Red List update highlights the fragility of natural wonders, such as the unique landscape of monarch butterflies migrating thousands of miles,” said Dr. Bruno Oberle, director general of the IUCN, in a press release. Logging and deforestation, as well as pesticides and herbicides, “kill butterflies and milkweed, the host plant on which monarch larvae feed,” adds the International Union for Conservation of Nature.
“It hurts to watch monarch butterflies and their extraordinary migration teeter on the brink of collapse,” said Anna Walker of the New Mexico Biopark Association, which led the evaluation of the monarch butterfly. The Western population has declined by about 99.9% since the 1980s. The greater eastern population declined by 84% between 1996 and 2014. “The question of whether there are enough butterflies to maintain the population and prevent its extinction remains a concern,” warns the IUCN. For Anna Walker, “there are signs of hope” in mobilizing the public and organizations to try to protect this butterfly and its habitat.
The endangered sturgeon
The situation of sturgeon—also a migratory—has gone from bad to worse, including that of the beluga, famous for its eggs made in caviar and its meat, according to this list. “All sturgeon species are still alive in the northern hemisphere, and they are also migratory, now threatened with extinction due to dams and overfishing,” notes the International Union for Conservation of Nature.
Of the world’s 26 remaining sturgeon species, 100% are now threatened with extinction, a decline much steeper than previously thought due to overfishing or barriers to migration.
Lake Sturgeon (Acipenser dabryanus) has been moved from critically endangered to extinct in the wild. Reassessment also confirmed the extinction of the Chinese paddlefish (Psephurus gladius).
The Red List classifies species into one of eight categories of threat. A total of 147,517 species were assessed in the latest edition, with 41,459 species considered critically endangered: of which 9,065 are critically endangered; 16,094 are at risk and 16,300 are considered vulnerable.