|
The plateau pika (Ochotona curzoniae), also known as the black-lipped pika, is a species of mammal in the Ochotonidae family commonly known as pika. It is a small diurnal and non-hibernating mammal weighing about 140g when full grown. The animals are reddish tan on the top-side with more of a whitish yellow on their under-belly. They prefer to live in elevations of 3,100 to 5,000 m, mostly in the Tibetan Plateau, which is where the common name originates from. The species is found in China, Pakistan, India, and Nepal in high alpine deserts, steppe and meadows, as well as tropical and subtropical montane forests.〔(IUCN Red List of Threatened Species )〕 ==Role in the ecosystem== Plateau pikas are considered to be a keystone species as they play a role in recycling nutrients in soil, providing food to predators such as; foxes, weasels, falcons, Asia pole cat, upland buzzard, and owls. They also provide microhabitats by increasing plant richness and their burrows provides nests for small birds and reptiles. According to the Chinese biologists who have studied the wildlife of the Hoh Xil (northern part of the Tibetan Plateau), plateau pikas are the favorite food of the area's brown bears.〔Xu Aichun, Jiang Zhigang, Li Chunwang, Guo Jixun, Wu Guosheng, Cai Ping, "(Summer Food Habits of Brown Bears in Kekexili Nature Reserve, Qinghai: Tibetan Plateau, China )". ''Ursus'', Vol. 17, No. 2 (2006), pp. 132–137〕 In addition to its role as a prey base, the plateau pika is important for soil health in meadows; the burrowing of the species helps to aerate the soil. The species is currently considered threatened, mostly due to aggressive poisoning campaigns by Chinese populations, predominantly to eliminate competition for food with livestock.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Plateau pika」の詳細全文を読む スポンサード リンク
|