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Palaearctic region

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Area, climate, physical features and faunas of palaearctic region

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Palaearctic region

  1. 1. Palaearctic region Submitted by: Syed Usman Abdullah Roll No: 2712 (148077) Department: BS-Zoology Semester: 6th (Evening)
  2. 2. Introduction  The Palearctic or Palaearctic is one of the eight biogeographic realms of the Earth.  It was first used in the 19th century, and is still in use as the basis for Zoogeographical region.  The Palearctic is the largest of the eight realms.
  3. 3. Extent:  It is the largest zoogeographical region that includes; ◦ whole of Europe, ◦ northern part of Africa, ◦ northern China, ◦ U.S.S.R, ◦ Japan, ◦ Iran, ◦ Afghanistan and ◦ Baluchistan (western province of Pakistan).
  4. 4. Palaearctic Map
  5. 5. Physical features  Palaearctic region is bounded by sea to the west, north, and east, and by the Sahara and Himalayas to the south.  The Palaearctic is therefore, in continuous land connections with two of its neigbours, the Ethiopian and Oriental regions.  From which it is separated by a desert in the one case and a high mountain range in the other.  From its other neigbour, the nearctic, it is cut off by sea.
  6. 6. Climate  The climate is more or less temperate.  The region includes both wet forest lands and dry open steppe lands, as well as, large coniferous forests.  Wide range of temperature, greater fluctuation in the rainfall, greater diversity of surface features are the characteristics of the Palaearctic region.
  7. 7. Zoological characteristics Mammals:  There are 28 families of land mammals (excluding the numerous bat families).  This region does not have any large spectacular mammals.  There are moles, shrews, rabbits, hedgehogs, porcupines, hyaenas, camels, donkeys, sheeps, oxen, deers, bears, cats and doges.
  8. 8. Unique families of mammals:  The two families of mammals that are unique to this region are both are rodents, namely, and the  Each family is represented by only one genus.  Spalax is a brownish yellow burrowing rat with no tail.  Selevinia is mainly remarkable because it was discovered recently in 1938 in Kazhakstan.
  9. 9. Birds:  There are 53 families of birds most of which are migratory.  All birds have wide distribution and are shared with Nearctic, Oriental and African regions.  Birds include hawks, ducks, stork, cuckoos, kingfishers, swifts, swallows, thrushes, blackbirds, finches, grebes, loons etc.  There are no parrots. family of bird is only restricted family of this region.
  10. 10. Reptiles:  The reptilian fauna is characterized by turtle, tortoises, few lizards and snakes.  There is an alligator in China.  No family is confined to this region.
  11. 11. Amphibians:  Palaearctic is important from the point of view that is has a large number of tailed amphibians, the newts and salamanders.  Of the tailless amphibia, the common toads and frogs are widespread.  Few tree frogs of both the hylid and polypedatid families.
  12. 12. Fishes:  There are carps, salmon, pikes, perches, eels and Petromyzon.  Carp fish is the dominant family.  There is no endemic fish family in this region.
  13. 13. Thank You