What If Gone

Species → Tiger

Tiger

Panthera tigris

5,700 individuals
Extinction risk Endangered
Apex predatorUmbrella speciesConservation
Tiger (Panthera tigris)
Photo: Mustang Joe, Wikimedia Commons (CC0)

What if it disappeared?

Impact Low
1 year

Without the tiger keeping up hunting pressure, deer and wild boar would likely become less wary and start growing faster in the forests it once patrolled — the same "landscape of fear" mechanism documented in other large predators like the wolf.

Hypothesis
10 years

That missing pressure has an even more concrete effect a decade on: without the tiger to justify their status as vast protected areas, those same forests lose the conservation priority that, in practice, also benefited the hundreds of other species sharing them.

Extrapolated
Detail

Raisonnement d'« espèce parapluie », largement utilisé en planification de la conservation depuis les années 1980-1990 pour les grands prédateurs à vastes domaines vitaux — extrapolé ici aux conséquences de la disparition du tigre plutôt qu'au principe de désignation des aires protégées lui-même.

Tigers need territories so vast and intact that protecting them amounts, in practice, to protecting every species that lives there — a planning principle validated by the overlap of protected areas, not by a direct measurement of what would happen if the tiger actually vanished and that justification disappeared with it.

What's missing to confirm it: The real extent of protection loss for other species if the tiger actually disappeared hasn't been measured — the umbrella-species principle is demonstrated for designating protected areas, not for their upkeep once the species that justified them is gone.

100 years

Over a century, in areas where the vast protection granted for the tiger's sake had vanished along with it, part of those forests would likely have become exploitable again — chipped away by agriculture and logging like so many Asian forests already are outside the protected areas its presence once justified.

Hypothesis
1000 years

Over a thousand years, other big cats like the leopard would likely take on part of the predator role, but without ever needing as vast a territory to survive — the very argument that had justified the size of tiger reserves would vanish with it, and the forest landscapes that depended on it would remain permanently more fragmented than they otherwise would have been.

Hypothesis

Documentation

Last verified: August 16, 2026