They hope and expect the herds of big grazers will decrease in size and be more healthy as the wolves will prey on the weaker animals first. The same will happen with American schoolchildren going on outings to the park. Only the healthy and strong will survive, making America's youth stronger than ever before.
With few natural predators, deer had taken over Yellowstone National Park, cropping its grassland and shrubbery down to nothing. When wolves were reintroduced to the park in 1995 the following things happened.
So the wolves not only changed the whole ecosystem of the park. They also changed it physically!
The usual hypothesis of the most obvious effect of adding wolves back to Yellowstone National Park was that wolves would curb the populations of deer and elk.
However, when scientists reintroduced a small wolf population there, they found that this:
The reintroduction of wolves decreased the population of elk, bison, and deer to drop slightly.
increased maple population
Air pollution from vehicle and snowmobile emissions. Water pollution from vehicles. Noise pollution from vehicles and large numbers of people affects the animals and their health.
Air pollution from vehicle and snowmobile emissions. Water pollution from vehicles. Noise pollution from vehicles and large numbers of people affects the animals and their health.
Despite our best efforts, Yellowstone National Park has definitely suffered from human impact.
impact of ecosystem has caused a great imbalance in nature which later leads to loss of biodiversity
Climate has the greatest impact on an ecosystem.
urbanisation has the biggest impact on our ecosystem. more and more development will led to degradation of envirinment.
a host
a host
by cut the tree
keystone species is a species that has an unusually large impact on its ecosystem.
where in the ecosystem does tiger fit
One way, polution.