Species → Black-tailed Prairie Dog

Black-tailed Prairie Dog

Cynomys ludovicianus

an estimated 10 to 20 million, far below historical levels
Extinction risk Least Concern
Ecosystem engineerGrasslandKey prey
Black-tailed Prairie Dog (Cynomys ludovicianus)
Photo: Acroterion, Wikimedia Commons (CC BY-SA 4.0)

What if it disappeared?

Impact Moderate
A single season

Prairie dog burrows create a network of habitats used by dozens of other species — from insects to raptors — and their presence is associated with higher animal diversity than on a comparable prairie without a colony.

Documented
Detail

Miller, B., Ceballos, G. et Reading, R. (1994). The prairie dog and biotic diversity. Conservation Biology, 8(3), 677–681.

Burrows alter local soil structure and vegetation, and numerous species — from the black-footed ferret to the burrowing owl — directly use prairie dog colonies as habitat or a food source.

When a colony disappears

The loss of a colony could trigger a cascading decline among the species that depend on it most, notably the black-footed ferret — but the actual extent of this 'keystone species' role is the subject of scientific debate.

Extrapolated
Detail

Extrapolation prudente : une revue critique de 1999 (Kotliar et al.) a directement contesté l'ampleur du rôle de clé de voûte attribué au chien de prairie dans certains travaux antérieurs.

The effect is solidly documented for a small number of highly specialized species (black-footed ferret, burrowing owl), but according to some authors is overstated for the prairie animal community as a whole — an example where the literature itself is divided on the exact magnitude of the effect, not just its existence.

What's missing to confirm it: A consensus on the actual magnitude (as opposed to the mere existence) of the prairie dog's keystone effect on the prairie community as a whole, beyond the few well-documented specialist species.

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