Wolves Stabilized Yellowstone’s Ecosystem 25 Years After Their Reintroduction

Ecosystem Of Yellowstone Is Now Stabilized With Wolves

After carnivores got wiped out by the Federal Government in 1900, administrators of the park had to regulate high rising numbers of elk by killing them off.

Yellowstone National Park was home to many predatory animals such as grizzly/black bears, mountain lions, and of course, wolves. But that was before the start of the 20th century. This park lost all its habitual carnivores when Government campaigns successfully removed all of them.


Due to this imbalanced nature, the park started spilling out of elks, leaving them to starve. They began coming out into human civilization in search of food. Between the early 1930s to late 1960s, elks were killed in order to keep a sustainable population but, as soon as it stopped, the numbers went haywire.

So to balance the accounts off, the park officers re-inhabited 41 wolves in the parkland in 1995-97. Needed steps were followed to develop the numbers of meat-eaters in their neighborhood.

Park’s chief biologist spoke on this.Doug Smith

For the last two decades, a study was carried out to monitor the progress of the ecosystem. Researchers studied the hunting methods along with the nature of the prey. Their results showed that wolves have largely affected in balancing the ecosystem with their methods of hunting variations in different seasons.


This diversified killing has affected in controlling other populations as well as giving them a chance to reproduce. The reason is that when seasons change, wolves change their prey types along with it.

According to the Journal of Animal Ecology, wolves mainly hunt elks in rainy and snowing seasons and move onto killing bulls in the dry season. The biggest elk group of the park has now stabilized at 6000-8000, and wolves have grown into a staggering 300-350. (National Geographic.)

They are now letting residents decide whether wolves need to be introduced to Colorado where elks exceed 250,000 in number.

0 0 vote
Article Rating
Notify of
Inline Feedbacks
View all comments