HOW WOLVES CHANGE RIVERS
This Will Shatter Your View of Apex Predators
Have a look at this amazing video showing how one species can have a massive cascading effect on the entire ecosystem in which it lives… and even alter the geography of the area.
This may be one of the most important conservation concepts to come out of natural science in the last half century. The thing about this case study is that the same can be applied to apex predators around the world: lions in Africa, tigers in Asia. Sharks, bears, and wild dogs are all species sitting at the top of their respective food chains, creating stability amongst the species they prey on and maintaining the health of plants and animals right down the trophic ladder.
The sad part is that some of these apex predators are in decline, sometimes jeopardizing ecosystems on which they and other species rely.
When we try to pick out anything by itself, we find it hitched to everything else in the Universe. – John Muir
When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable “trophic cascade” occurred.
What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains in this movie remix.