Kansas Black-Tailed Prairie Dogs Lillian Damron & Eleanor Dobbles

Emigration

Due to habitat loss, many black-tailed prairie dogs choose to migrate to other populations. Resources such as space and nutrients were low because of farming, and some prairie dogs didn't survive or left, causing a decrease in the population.

Prairie Dog Range
Immigration

In southwestern Kansas, some prairie dog populations are increasing due to habitat restoration and increased rainfall over the past few years. Other prairie dogs are moving to these communities because of the abundance of resources now available.

Births

In the above-stated southwestern colonies, researchers have observed an increase in births due to the increased resources and population.

Deaths

In the northern colonies, several populations have become extinct because of an outbreak of the plague. While this decreased the population size, neighboring communities have benefited from the newly available resources.

Logistical Growth

In the beginning, prairie dog populations grew slowly due to poisonings to limit competition with livestock. But as the poisoning stopped, the population shot up and is now leveling out as the population reaches the carrying capacity of their area. Carrying capacity is the maximum amount of individuals an environment can support.

Logistical Growth of Prairie Dog Populations
Density-Dependent Factors

Two density-dependent factors that affect the species are the plague, and resource availability or lack of (specifically food). The plague and food shortage are biotic factors, their impact limited by the population size.

Density-Independent Factors

Drought and habitat disruption are density-independent factors. These are both abiotic factors that are not affected by the size of the population. The drought causes the prairie dogs to have limited resources. Habitat disruption due to farming leaves them without shelter.

Works Cited

ksoutdoors.com/content/download/2632/12731/version/1/.../PDogPlan101102.pdf

http://dogbreedspicture.net/map/map-prairie-dog-range.html

http://gprc.org/research/prairie-dogs-the-truth/#.WPduWkdc-pA

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