Nearctic region

1. NEARCTIC REGION
PRESENTED BY: UMME ARBAB

2. NEARCTIC REGION
The Nearctic Region is North America above the tropics.
The Nearctic too is north-temperate with an arctic fringe.
The original cover of much of eastern North America in
the mid-latitudes is deciduous or mixed forest.

4. NEARCTIC REGION
Westward, in the middle part of the continent, are
extensive grasslands, and, farther west, which rise
mountains with strips of mixed or coniferous forest.
Northward, as in Eurasia, there is first a great stretch of
coniferous forest and then tundra.

5. FISHES
Nearctic primary-division fishes are:
 One or 2 paddlefishes (China)
 The Bowfin In summary, Nearctic fresh-water fishes are
numerous and distinctive.

6. FISHES
 A few mooneyes
Suckers (E. Asia)
Many small cyprinids
Ameiurid catfishes
A few umbrids (eastern Europe)
Dallia in Alaska (E. Siberia)
Esox

7. SUCKERS ESOX
This Photo by Unknown Author is licensed under CC BY

8. AMPHIBIANS
Nearctic amphibians are:
 Salamanders
 A localized leiopelmid (New Zealand)
 Pelobatids (subfam. also Europe)

9. AMPHIBIANS
 Bufo(wide)
 Hyla (wide)
 Rana (wide)
 A few leptodactylids
 Brevicipitids Dominant Nearctic amphibians belong to the same
groups as Palearctic ones (salamanders, Rana, Bufo, and Hyla).

10. This Photo by Unknown Author is licensed under CC BY-SA

11. REPTILES
Nearctic reptiles are:
 Snapping turtles
 Musk turtles
 Emydines (Eurasia and trop. Amer.),

12. REPTILES
 An endemic genus of land
 Tortoises in south (subfam. warm, wide),
 Trionyx
 An alligator in the southeast (China) and
 A crocodile in southern Florida Nearctic reptiles are a mixture of
Palearctic (or Old World) and tropical American groups with few
important exclusive groups.

13. EMYDINES

14. BIRDS
Nearctic birds include land and fresh-water representatives of
about 49 families.
About 39 of them are more or less widely distributed in the
Nearctic or the warmer parts of it at least in summer.
Nearctic birds are a mixture of Palearctic (Old World) and
tropical American groups.

15. BIRDS
 grebes,
 loons,
 New World vultures
(trap. Amer.),
herons,
 ducks

16. BIRDS
Quails
Rails
Clovers
Sandpipers
Gulls
Pigeons,
 Owls

17. GREBES

18. MAMMALS
Nearctic mammals are:
An opossum (extending from S. A.)
Shrews
Moles
Nearctic mammals too are a mixture of (relatively more) Palearctic or
Old World groups and (relatively fewer) tropical American ones.

19. MAMMALS
An armadillo (extending from S. A.)
Canids (wide)
Bears (Eurasia, S. A.)
Raccoons
Related pandas in Asia
Mustelids (wide)
Cats

20. OPOSSUM

21. SUB-REGIONS
Wallace divided the Nearctic Region into four subregions:
1. A northern one extending across the continent
2. and below it an eastern,
3. a west-central (Rocky Mountain etc.),
4. Pacific coast ("Californian") one

22. These subregions obviously correspond to
more or less different climatic and
vegetation areas, and their faunas are to
some degree different.