Beyond the Borders: Gateway
City Development and Wildlife around Yellowstone National Park
Bison
and Brucellosis
Until recently bison herds in Yellowstone had no natural predators
other than man. Under these conditions their populations have
grown, peaking at over 3,000 individuals in the last ten years.
Bison, which are potential carriers for brucellosis
have incurred a heated debate over regulations concerning their
migrations out of the park. In severe winters such as 1996-97
large migrations out of the park resulted in the culling of
1,100 individuals by the Montana Department of Livestock. This
widely publicized action has gained nation-wide attention and
both resistance and support from the public. To see more on
this issue click on the following links-
http://www.wildrockies.org/Talus/Bison/97news/brucell1.html
Wolves:
Bringing Back the Predator
Since the reintroduction
of wolves to Yellowstone in 1995, there has been continued debate
on the feasibility of their coexistence both with other wildlife
and outside ranchers and homeowners. The controversy has long
been separated into two camps, those who support the reintroduction
of wolves for both aesthetic and moral reasons and those who
oppose the wolves reintroduction for the sake of their pets,
property and livestock. Beginning in the 1800’s wolves in the
U.S were persecuted for their reputations as vicious killers
of livestock and livlihood. Today, many see these animals as
a natural and integral part of the predator /prey dynamics that
exist in the natural environment. For park managers the struggle
continues on formulating a policy to protect both the ranchers
and the wolves interests. To see more on this issue click on
the following links-
http://forwolves.org/ralph/
http://www.sierraclub.org/planet/199603/wolves.html
As development continues to increase around Yellowstone, populations
of sensitive species such as the grizzly may be adversely affected.
According to Mattson et.al (1987) females are more likely to
avoid developed areas especially when they have cubs. If development
continues the bears available range may be begin to overlap
developed areas. If this occurs, there will be increased potentially
dangerous encounters between mothers defending cubs and humans.
For elk differing issues arise with their potential to transmit
brucellosis in the same manner as bison. With the increase in
houses and subdivided property the amount of property with fences
increases also as landowners begin to protect their investment.
Unfortunately the consequences for migratory species is an increase
in adverse encounters with the general public. For most species,
including the popular grizzly protection ends outside the boundaries
of the park.
To see more on this issue click on the following
links-
http://www.cnn.com/NATURE/9905/28/Grizzlies.enn/
http://www.greateryellowstone.org/bears_injustice.html