The Afrotropical realm is one of Earth's eight biogeographic realms.It includes Africa south of the Sahara Desert, the majority of the Arabian Peninsula, the island of Madagascar, southern Iran and extreme southwestern Pakistan, and the islands of the western Indian Ocean.It was formerly known as the Ethiopian Zone or Ethiopian Region

Description. The realms delineate large areas of Earth's surface within which organisms have evolved in relative isolation over long periods of time, separated geographic features, such as oceans, broad deserts, or high mountain ranges, that constitute natural barriers to migration. As such, biogeographic realm designations are used to indicate general groupings of organisms …

The Sahel (/ s ə ˈ h ɛ l /; Arabic: ساحل sāḥil, "coast, shore") is a region in North Africa. It is defined as the ecoclimatic and biogeographic realm of transition between the Sahara to the north and the Sudanian savanna to the south. Having a hot semi-arid climate, it stretches across the south-central latitudes of Northern Africa between the Atlantic Ocean and the Red Sea.

The Sudd (as-Sudd or al-Sudd, Dinka: Toc) is a vast swamp in South Sudan, formed by the White Nile's Baḥr al-Jabal section. The Arabic word sudd is derived from sadd (), meaning "barrier" or "obstruction". The term "the sudd" has come to refer to any large solid floating vegetation island or mat. The area which the swamp covers is one of the world's largest …

List of species. The following is a list of bird species and subspecies endemic to the Hawaiian Islands: . Procellariidae. Hawaiian petrel or ʻuaʻu, Pterodroma sandwichensis VU; Newell's shearwater or ʻaʻo, Puffinus newelli CR; Bryan's shearwater, Puffinus bryani CR (P. assimilis: LC); Bonin petrel, Pterodroma hypoleuca LC 99% of the total population breeds on the …

Although tropical Africa is mostly familiar to the West for its rainforests, this biogeographic realm of Africa is far more diverse. While the tropics are thought of as regions with hot moist climates, which are caused by latitude and the tropical rain belt, the geology of areas, particularly mountain chains, and geographical relation to continental and regional scale winds impact the overall ...

A woodland (/ ˈ w ʊ d l ə n d / ()) is, in the broad sense, land covered with trees, or in a narrow sense, synonymous with wood (or in the U.S., the plurale tantum woods), a low-density forest forming open habitats with plenty of sunlight and limited shade (see differences between British, American, and Australian English explained below). Woodlands may support an understory of …

The Holarctic realm is a biogeographic realm that comprises the majority of habitats found throughout the continents in the Northern Hemisphere.It corresponds to the floristic Boreal Kingdom.It includes both the Nearctic zoogeographical region (which covers most of North America), and Alfred Wallace's Palearctic zoogeographical region (which covers North Africa, …

An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm.Ecoregions cover relatively large areas of land or water, and contain characteristic, geographically distinct assemblages of natural communities and species.

Evolution of admiral butterflies (LimenitisThe world is divided into eight biogeographic realms – Palearctic, Nearctic, Afrotropical, Neotropical, Australasian, Indomalayan, Oceanian, and Antarctic. The Palearctic realm includes most of Eurasia and North Africa while Nearctic realm includes most of North America. Limenitis butterfly wing patterns are much more diverse in the …