![Picture](/uploads/2/9/0/0/29008875/647856.png)
Food Web:
· The Arctic seal is eaten by the polar bear and eats the Atlantic salmon
· The polar bear eats the Atlantic salmon, and so does the arctic seal.
· The Arctic tern eats the Atlantic salmon which than eats the krill.
· The Arctic hare eats the Arctic willow, which is also eaten by the Lemming.
· The Ermine also consumes the Lemming.
· The Arctic wolf eats the Caribou, who then eats the tufted saxifrage.
· The Caribou and Musk ox eat the Lichen.
· The Ptarmigan also consumes the Lichen.
- Polar bears eat the Arctic seal and the Atlantic salmon and has no predator thus for making it the top of its food web.
· The Arctic seal is eaten by the polar bear and eats the Atlantic salmon
· The polar bear eats the Atlantic salmon, and so does the arctic seal.
· The Arctic tern eats the Atlantic salmon which than eats the krill.
· The Arctic hare eats the Arctic willow, which is also eaten by the Lemming.
· The Ermine also consumes the Lemming.
· The Arctic wolf eats the Caribou, who then eats the tufted saxifrage.
· The Caribou and Musk ox eat the Lichen.
· The Ptarmigan also consumes the Lichen.
![Picture](/uploads/2/9/0/0/29008875/8042585.jpg)
Keystone Species: Definition: A species whose presence and role within an ecosystem has a disproportionate effect on other organisms within the system. A keystone species is often a dominant predator whose removal allows a prey population to explode and often decreases overall diversity.
Example: The arctic fox is a keystone species because it gets eaten by polar bears, wolves, kittiwakes, and snowy owls. If the arctic fox was taken out of this ecosystem, the populations of those four organisms would decrease drastically.
Example: The arctic fox is a keystone species because it gets eaten by polar bears, wolves, kittiwakes, and snowy owls. If the arctic fox was taken out of this ecosystem, the populations of those four organisms would decrease drastically.