The Impact of the Wolves: Wolves Change the Whole Ecosystem in Yellowstone National Park!

In the animal world, the wolf is considered a typical predator. The wolf lives in the wild and although sometimes only a solitary wolf can be found, most of their social life takes place in a pack. The pack consists of the mother, the father and their offspring, ie a family of wolves. Wolves stay with their parents until they are 2 years old, because they need that time to mature. On the other hand, wolves form a strong emotional bond with their loved ones. There are many testimonies from scientists that explain this connection to small wolves that later separate from the pack. This feature is also especially visible when the wolf is bred by man, so later it does not develop its natural aggression, but forms a strong friendly relationship with man or eventually with the dogs he was in contact with while growing up. It is characteristic of wolves that they are bound to only one partner for life, and their relationship lasts until one of them dies. Only then does the other go in search of a new partner. Incest in the pack is strictly forbidden and is the reason for its decay. If a male wolf fails to find a mate in its territory, it can mate with a female wolf from another pack.
As mentioned, wolves are generally considered predators, which they often take and never contribute to nature. However, this predator can contribute to the environment in many ways than we can imagine. This species can change the balance of things very quickly and affect the contribution to life of many other creatures and forms of vegetation.

The documentary, published on the YouTube channel Sustainable Human, shows the influence of wolves and explains the story of Yellowstone National Park. Wolves have been absent from Yellowstone National Park for many years. Since their return in 1995, significant changes have been observed throughout the animal and plant world.

What were the changes that took place in Yellowstone National Park?

Significant changes in deer behavior were first observed. Until then it can be said that the deer had no enemy nearby. The deer feeds on plants, and until then it has literally eaten all the vegetation around it. The wolf as a predator normally killed a deer according to its initial eating instinct, but this was not the first significant change that occurred. The arrival of wolves in the park changed the behavior of the deer. Deer have begun to avoid certain areas of the park where it is possible to meet wolves, or areas where they may be trapped, such as valleys and the gorges. Thus the vegetation began to recover in those places. It has been observed that in some places in the park the height of the trees quintupled in just six years. Forests have become thicker and became full of aspen and cotton trees. Then the birds returned to these areas. Beavers also began to settle in these areas because they also like to eat trees. Like wolves, beavers are ecosystem engineers. Beavers create a path from branches across rivers to most species, such as ducks. Wolves kill coyotes, increasing the number of rabbits and mice in Yellowstone National Park. It contributes to more eagles in these areas, foxes, weasels, badgers, ravens. Also, the population of bears has increased due to the barriers that exist in these areas, which feed the bears, but also with the remains left by the wolves. And the bears reinforced the impact of the wolves by killing some of the calves of the deer. The most interesting moment in all these changes is the change over the rivers. Wondering how?

The rivers began to meander less, there was less erosion, the channels narrowed, more pools was formed, more riffle sections, all that is and still as favorable for wildlife habitants. The rivers changed in response to the wolves. And the reason was that the regenerating forests, stabilized the banks so that they collapsed less often, so that the rivers became more fixed in their course. The direct share of the wolves, by just removing the deer from certain areas, automatically enabled the regeneration of the vegetation on the valley sides, there was less soil erosion because the vegetation stabilized that as well. So how the wolves changed the entire ecosystem of Yellowstone National Park, this huge area of ​​land, but also its physical geography.

This video has been viewed more than 43 million times on Youtube. He may have thought that the wolf is just a predator and that he does not contribute to anything, but as you can see, it affects the whole ecosystem. Every animal, plant, insect has its own contribution to the animal and plant world, each of them exists for a reason, so the removal of one of them affects all subsequent changes. Do not underestimate the importance of any insect, animal or plant. Each of them exists for a reason and has a purpose. Remember that.