An ecosystem can be very delicate. It is also very complex. All the animals and plants have a role that they play. At Yellowstone National Park, will reintroduce for the first time in nearly 70 years. A single tackle wolves managed to change everything – including the way the river flowed.
This documentary video, which is about 4 ½ minutes long, explains exactly what happened. The way that will change the rivers is simply amazing. It all starts with seeing gorgeous white wolves howling in the wintertime. It then spans to all of Yellowstone National Park.
The narrator discusses the topic of a trophic cascade. It starts at the top of the food chain and then works itself all the way down. The example that is given is how wolves impacted the ecosystem at Yellowstone National Park in 1995.