Dictionary > Palaearctic realm

Palaearctic realm

Definition
noun
A biogeographic realm that covers Europe, Asia north of the Himalaya foothills, northern Africa, and the northern and central parts of the Arabian Peninsula
Supplement
Biogeographic realms are large spatial regions of the Earth’s land surface. Studying biogeographic realms leads to insight especially on biodiversity. It provides understanding on the extent of biodiversity and the factors that affect it. At present, there are about eight realms recognized by the World Wildlife Fund and they are divided according to their ecosystems sharing similar biological evolutionary history and distributional patterns of terrestrial organisms. The eight biogeographic realms are Nearctic realm, Palaearctic realm, Neotropical realm, Afrotropic realm, Indomalayan realm, Australasia realm, Oceanian realm, and Antarctic realm.
The Palaearctic realm (about 54.1 million square kilometres) is the largest biogeographic realm. It includes the bulk of Eurasian and North Africa. It also includes the northern and central parts of the Arabian Peninsula. There are several freshwater and terrestrial ecoregions in this realm such as the European Siberian; the Mediterranean Basin; the Sahara and Arabian Deserts; Western and Central Asian; and East Asia. The freshwater ecoregions of Palaearctic were deemed as the source of water for irrigation methods utilized by early civilizations.1
See also:

Reference(s):

1 Palearctic realm. Retrieved from ://en.wikipedia.org/wiki/Palearctic-realm.


You will also like...

Electromagnetic spectrum of a brain
Sleep and Dreams – Neurology

While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..

An artistic depiction of a human embryo
Growth and Development of a Human Baby

Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..

Sigmund Freud and Carl Gustav Jung
Sigmund Freud and Carl Gustav Jung

In this tutorial, the works of Carl Gustav Jung and Sigmund Freud are described. Both of them actively pursued the way h..

"Cronopio dentiacutus", a prehistoric mammal (an illustration)
Mammalian Ancestors

Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..

kinesin motor proteins transporting molecules across microtubules
Movement of Molecules Across Cell Membranes

Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..

The Human Physiology
The Human Physiology

Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..