American Bison – Facts, Diet, Habitat & Pictures on Animalia.bio

Population

Population threats

The most notable threats to the population of this species as a whole are long-time persecution of bison from their habitat; slow growth of population in closed and protected areas; genetic manipulation for commercial purposes; hybridization and backcrossing of bison and other cattle as well as between different bison subspecies; natural limiting factors in conditions of reservations; and the possible threat of depopulations of bison because of its wild populations’ carrying cattle deceases; continuous culling of bison in order to preclude brucellosis and bovine tuberculosis infection.

Population number

According to the IUCN Red List resource, the total population size of the American bison is around 31,000 individuals in 68 conservation herds in North America. The total wild population of the species is estimated to be between 11,248 and 13,123 mature individuals in North America. Currently, the American bison is classified as Near Threatened (NT) on the IUCN Red List but its numbers today are stable.

Ecological niche

Bison was an important component of the flatlands ecosystem in its habitat. When grazing, the animal thrusts its hooves into the soil, thus fertilizing it. Plains, grazed by bison, were inhabited by prairie dogs, protecting them against predators due to being shorter and thus providing a better view of the surrounding area. Corpses of bison were a delicacy for scavengers while their meat was the main source of food for the local population of wolves and humans. Bison fertilized the plains of the habitat thus becoming predecessors of farmers.