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The Arctic hare [2] (Lepus arcticus) is a species of hare highly adapted to living in the Arctic tundra and other icy biomes. The Arctic hare survives with shortened ears and limbs, a small nose, fat that makes up close to 20% of its body, and a thick coat of fur. It usually digs holes in the ground or under the snow to keep warm and to sleep.
Although there are many lichen species throughout the world, only a few species of lichen are known to be both edible and provide any nutrition. [6] Two problems often encountered with eating lichens is that they usually contain mildly toxic secondary compounds, and that lichen polysaccharides are generally indigestible to humans. Many human ...
Lichens are the most dominant plants. The ground is bare with a patchy cover of lichens and mosses. [24] Flowering plants are also seen but not as common. It only contains 60 species of flowering plants. The Arctic tundra vegetation also consists of lichens and mosses, but it includes shrubs, grasses and forbs as well. The amount of vegetation ...
[6]: 3 Lichens do not have roots that absorb water and nutrients as plants do, [15]: 2 but like plants, they produce their own energy by photosynthesis. [16] Instead, lichen absorb nutrients from rainwater and the air [17]. When they grow on plants, they do not live as parasites, but instead use the plant's surface as a substrate.
Alaskan hare skeleton on display at the Museum of Osteology. The Alaskan hare (Lepus othus), also known as the tundra hare, is a species of mammal in the family Leporidae. [2] They do not dig burrows and are found in the open tundra of western Alaska and the Alaska Peninsula in the United States. They are solitary for most of the year except ...
Both rabbits and hares are almost exclusively herbivorous (although some Lepus species are known to eat carrion), [4] [5] feeding primarily on grasses and herbs, although they also eat leaves, fruit, and seeds of various kinds. Easily digestible food is processed in the gastrointestinal tract and expelled as regular feces.
Nephroma arcticum, the arctic kidney lichen, is a species of foliose (leafy), terricolous (ground-dwelling) lichen in the family Parmeliaceae. It has a yellowish-green thallus up to 8 cm (3 in) across made of large lobes , with a dark, tomentose lower surface.
Arctic vegetation is largely controlled by the mean temperature in July, the warmest month. Arctic vegetation occurs in the tundra climate, where trees cannot grow.Tundra climate has two boundaries: the snow line, where permanent year-round snow and ice are on the ground, and the tree line, where the climate becomes warm enough for trees to grow. [7]