Nearly 30% of the species studied in the IUCN "Red List" are "threatened", according to the update of this real barometer of living organisms published this Saturday in Marseille on the occasion of the organization's world congress .

On the other hand, IUCN is pleased to see “four species of commercially fished tuna recovering thanks to the implementation of regional quotas” developed by specific organizations.

Of the seven most fished species, these four have thus seen their ranking down in the list.

But the organization warns "that despite an overall improvement, many regional tuna stocks remain depleted."

Sharks, rays, Komodo dragons ...

In total, the International Union for the Conservation of Nature has studied 138,374 species, of which 38,543 (some 28%) are classified in the various “threatened” categories, while specialists warn of an ongoing collapse of biodiversity, some evoking a "sixth mass extinction". Among the emblematic species, the Komodo dragons, the largest lizard in the world, have seen their status go from “vulnerable”, the lowest of the threatened categories, to “endangered”.

The IUCN warns in particular that due to climate change, "the rise in temperature and therefore sea level should reduce their habitat by at least 30% in the next 45 years".

And individuals living outside the natural park that covers part of the islands in Indonesia where they are present, also see their habitat threatened by human activity.

Other victims of men, sharks and rays (which are part of the same family), of which an overall reassessment of the situation has shown that 37% are now in the threatened categories, against 24% in 2014. All the species thus classified are faced with overfishing, 31% to degradation or loss of habitat and 10% to the consequences of climate change, according to the IUCN.

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