ECOLOGY
BIODIVERSITY AND ITS CONSERVATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The wolves changed the behavior of the elk, so they no longer gathered in the valleys near the water, causing erosion. The river banks began to grow more vegetation, which stabilized their banks.
|
|
|
The wolves dug big holes, causing the river to turn into a pond.
|
|
|
The wolves tore through paths along the river causing erosion and making the river wider.
|
|
|
The wolves had nothing to do with the path of the river.
|
Detailed explanation-1: -But remarkably, the presence of wolves also changed the rivers. After reintroduction, it was noticed that riverbank erosion decreased so the rivers meandered less, the channels deepened and small pools formed.
Detailed explanation-2: -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.
Detailed explanation-3: -When wolves were brought back to the park, they not only killed elk, but also changed their prey’s behavior patterns. The herbivores started to avoid areas like valleys and gorges where they could be easily hunted by predators.
Detailed explanation-4: -Wolf kills, then, provide an important resource for bears in low-food years. Aggression toward coyotes initially decreased the number of coyotes inside wolf territories, which may have benefited other smaller predators, rodents, and birds of prey.