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...

river
Running Water Freshwater Communities

This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..

Structural depiction of catalase, an enzyme
Protein Activity and Cellular Metabolism

Proteins have a crucial role in various biological activities. Get to know how proteins are able to perform as enzymes, ..

Geological Periods
Geological Periods

Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

green leaf - close up view
Leaves

Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..

Birth Control and Contraception
Birth Control and Contraception

Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..

Origins of Life on Earth
Origins of Life on Earth

Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..