They are in the host's intestines. Traditional lifestyles are threatened. Caribou live in the arctic tundra, mountain tundra, and northern forests of North America, Russia, and Scandinavia. 12. 13. Caribou and wolves are the hosts and the parasites stay there until they die. These predatory birds are extremely hardy, and where they cannot find prey, they will resort to following polar bears and scavenging scraps from polar bear kills. Caribou are migratory animals and are known for mass migrations across the tundra in search of food. The world population is about 5 million. Temperatures are well below freezing much of the year, and there's little vegetation on which to feed. Caribou are well adapted to living in the tundra with thick fur and skin that enable them to enter frigid rivers while migrating. Caribou in Alaska are distributed in … 11. Then, area carnivores are equally desperate for a good meal. Rangifer herd size varies greatly in different geographic regions. They mostly eat seals, but will also eat walruses and dead whale carcasses from time to time. Arctic Poppy: Arctic poppy is an autotrophic plant and is also a producer, the main predator which is not really a predator, in the arctic tundra: is the Arctic Bumble Bee. Caribou can also be seen in sub arctic boreal forests during migration where they take refuge in windy coastal areas from flies and mosquitoes. The tundra herds seem to be particularly affected, and these animals are tremendously important for the people of the North. However, smaller, faster, more agile predators are a threat. Phytoplankton: Phytoplankton is an autotrophic plant and is a producer. populations have declined in the past years. However, if the food is scarce, and it is very difficult to get food, the host can die quickly. The Arctic tundra is a brutal environment for any life, including the Arctic or snowshoe hares that inhabit it. While polar bears are the reputed kings of Arctic predators, they can't catch a rabbit. Polar Bear - Polar Bears are one of the most famous tundra animals. predators such as: Musk oxen, Caribou and the Wood Bison. This includes both sedentary and migratory populations. The reindeer (Rangifer tarandus), also known as the caribou in North America, is a species of deer with circumpolar distribution, native to Arctic, sub-Arctic, tundra, boreal, and mountainous regions of northern Europe, Siberia, and North America. The tapeworm takes many nutrients that the host needs. They are found in the arctic tundra regions of North America, Asia, Northern Europe, Alaska and Greenland. If the host had a good supply of food, then they can live a longer life, even with the tapeworm. One of its predators is Krill. Snowy owls are found all over the tundra — even on the ice pack, where there are no rodents. They are the largest bears on Earth, and appear white, even though their fur is actually translucent.