A bioregion is an
ecologically
Ecology (from el, οἶκος, "house" and el, -λογία, label=none, "study of") is the study of the relationships between living organisms, including humans, and their physical environment. Topics of interest include the biodiversity
...
and geographically defined area that is smaller than a
biogeographical realm
A biogeographic realm or ecozone is the broadest biogeographic division of Earth's land surface, based on distributional patterns of terrestrial organisms. They are subdivided into ecoregion
An ecoregion (ecological region) or ecozone (ec ...
, but larger than an
ecoregion
An ecoregion (ecological region) or ecozone (ecological zone) is an and geographically defined area that is smaller than a , which in turn is smaller than a . Ecoregions cover relatively large areas of land or water, and contain characteristic ...
or an
ecosystem
An ecosystem (or ecological system) consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows. Energy enters the syst ...

, in the
World Wildlife Fund
In its most general sense, the term "world" refers to the totality of entities, to the whole of reality or to everything that is. The nature of the world has been conceptualized differently in different fields. Some conceptions see the worl ...
classification scheme. There is also an attempt to use the term in a rank-less generalist sense, similar to the terms "biogeographic area" or "biogeographic unit".
It may be conceptually similar to an
ecoprovince.
It is also differently used in the
environmentalist
An environmentalist is a person who is concerned with and/or advocates for the protection of the environment. An environmentalist can be considered a supporter of the goals of the environmental movement
The environmental movement (sometimes ...
context, being coined by Berg and Dasmann (1977).
A bioregion is also a land and water territory defined by the geographical limits of communities and ecological systems, but it is also defined by its people. It must include a unique cultural identity and be a place wherein local residents have the main right to establish their own development, although the main right does not, nonetheless, suggest an absolute right. Instead, it means that the livelihoods, claims, and interest of the local communities must both be the starting point and Gibson the standards for regional development and conversation. Within the framework, various state, investor, and other economic interests should be coped with.
WWF bioregions
The WWF scheme divides some of the biogeographic realms into bioregions, defined as "geographic clusters of
ecoregions
An ecoregion (ecological region) or ecozone (ecological zone) is an ecology, ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large ar ...

that may span several habitat types, but have strong biogeographic affinities, particularly at taxonomic levels higher than the species level (genus, family)." The WWF bioregions are as follows:
*
Afrotropical realm
The Afrotropical realm is one of Earth's eight biogeographic realms. It includes Africa south of the Sahara, Sahara Desert, the majority of the Arabian Peninsula, the island of Madagascar, southern Iran and extreme southwestern Pakistan, and the ...
**
Western Africa
West Africa or Western Africa is the westernmost region of Africa
Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjac ...
and
Sahel
The Sahel (; ar, ساحل ' , "coast, shore") is the ecoclimatic and of in between the to the north and the to the south. Having a , it stretches across the south-central latitudes of between the Atlantic Ocean and the .
The Sahel part o ...

**
Central Africa
Central Africa is a subregion
A subregion is a part of a larger region
In geography
Geography (from Greek: , ''geographia'', literally "earth description") is a field of science devoted to the study of the lands, features, inhab ...

**
Eastern
Eastern may refer to:
Transportation
*China Eastern Airlines, a current Chinese airline based in Shanghai
*Eastern Air, former name of Zambia Skyways
*Eastern Air Lines, a defunct American airline that operated from 1926 to 1991
*Eastern Air Lin ...
and
Southern Africa
Southern Africa is the south
South is one of the cardinal directions or compass points. South is the opposite of north and is perpendicular to the east and west.
Etymology
The word ''south'' comes from Old English ''sūþ'', from earlier Pr ...
**
Horn of Africa
The Horn of Africa (HoA), also known as the Somali Peninsula, is a large peninsula
A peninsula ( la, paeninsula from ' "almost" and ' "island") is a landform surrounded by water on most of its border while being connected to a mainland fr ...

**
Madagascar
Madagascar (; mg, Madagasikara), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), and previously known as the Malagasy Republic
The Malagasy Republic ( mg, Repoblika Mala ...

–
Indian Ocean
The Indian Ocean is the third-largest of the world's five ocean
The ocean (also the or the world ocean) is the body of that covers approximately 70.8% of the surface of and contains 97% of . Another definition is "any of the large ...

*
Antarctic realm
The Antarctic realm is one of eight terrestrial biogeographic realms. The ecosystem includes Antarctica
Antarctica ( or ) is Earth's southernmost continent. It contains the geographic South Pole and is situated in the Antarctic region of th ...
*
Australasian realm
320px, The Australasian realm
The Australasian realm is a biogeographic realm
A biogeographic realm or ecozone is the broadest biogeographic division of Earth's land surface, based on distributional patterns of terrestrial organisms. They a ...
[Wikramanayake, Eric; Eric Dinerstein; Colby J. Loucks; et al. (2002). ''Terrestrial Ecoregions of the Indo-Pacific: a Conservation Assessment.'' Washington, DC: Island Press]
**
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

**
New Guinea
New Guinea (; : ''Niu Gini''; id, Papua, historically ) is the , and with an area of , the largest island in the . Located in in the southwestern , it is separated by the wide from . Numerous smaller islands are located to the west and east ...

and
Melanesia
Melanesia (, ) is a subregion
A subregion is a part of a larger region
In geography
Geography (from Greek: , ''geographia'', literally "earth description") is a field of science devoted to the study of the lands, features, inhabi ...

**
New Zealand
New Zealand ( mi, Aotearoa
''Aotearoa'' (; commonly pronounced by English
English usually refers to:
* English language
English is a West Germanic languages, West Germanic language first spoken in History of Anglo-Saxon Engl ...

**
Wallacea
in blue has been used to separate Wallacea into a western part pertaining to Asia
Asia () is a landmass variously described as part of Eurasia
Eurasia () is the largest continent
A continent is any of several large landmasse ...

*
Indomalayan realm
The Indomalayan realm is one of the eight biogeographic realms. It extends across most of South Asia, South and Southeast Asia and into the southern parts of East Asia.
Also called the Oriental realm by biogeography, biogeographers, Indomalaya s ...
**
Indian subcontinent
**
Indochina
Mainland Southeast Asia, also known as the Indochinese Peninsula or Indochina, is the continental portion of Southeast Asia
Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia or SEA, is t ...
**
Sunda Shelf
Geologically
Geology (from the Ancient Greek
Ancient Greek includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into t ...

and
Philippine Archipelago
225px, A map of the Philippines showing the island groups of Luzon, the Visayas, and Mindanao">Visayas.html" ;"title="Luzon, the Visayas">Luzon, the Visayas, and Mindanao
The islands of the Philippines, also known as the Philippine Archipelag ...
*
Nearctic realm
Image:Ecozone Nearctic.svg, 400px, The Nearctic realm
The Nearctic realm is one of the eight biogeographic realms constituting the Earth's land surface.
The Nearctic realm covers most of North America, including Greenland, Central Florida, and t ...
**
Canadian Shield
The Canadian Shield (french: Bouclier canadien ), also called the Laurentian Plateau, is a large area of exposed Precambrian igneous and high-grade metamorphic rocks ( geologic shield) that forms the ancient geologic core of the North American ...

** Eastern
North America
North America is a continent
A continent is any of several large landmasses. Generally identified by convention (norm), convention rather than any strict criteria, up to seven geographical regions are commonly regarded as continen ...

**
Northern Mexico and Southwestern North America
** Western North America
*
Neotropical realm
The Neotropical realm is one of the eight biogeographic realm
A biogeographic realm or ecozone is the broadest biogeography, biogeographic division of Earth's land surface, based on distributional patterns of terrestrial animal, terrestria ...
[Dinerstein, E., Olson, D. Graham, D.J. et al. (1995). ''A Conservation Assessment of the Terrestrial Ecoregions of Latin America and the Caribbean.'' World Bank, Washington DC.]
**
Amazon biome, Amazonia
**
Caribbean
The Caribbean (, ; es, Caribe; french: Caraïbes; ht, Karayib; also gcf, label=Antillean Creole
Antillean Creole (Antillean French Creole, Kreyol, Kwéyòl, Patois) is a French-based creole, which is primarily spoken in the Lesser Antilles ...
**
Central America
Central America ( es, América Central, , ''Centroamérica'' ) is a region of the Americas
The Americas (also collectively called America) is a landmass comprising the totality of North
North is one of the four compass points or ...
**
**
**
Everglades
The Everglades is a natural region of tropical climate, tropical wetlands in the southern portion of the U.S. state of Florida, comprising the southern half of a large drainage basin within the Neotropical realm. The ecosystem it forms is not ...

**
Northern Andes
**
Orinoco
The Orinoco () is one of the longest rivers in South America at . Its drainage basin, sometimes known as the Orinoquia, covers , with 76.3 percent of it in Venezuela and the remainder in Colombia. It is the List of rivers by discharge, fourt ...

**
Southern South America
*
Oceanian realm
The Oceanian realm is one of the World Wildlife Fund (WWF) biogeographic realms, and is unique in not including any continent
A continent is one of several large landmasses. Generally identified by convention (norm), convention rather ...

**
Micronesia
Micronesia (, ; from grc, μικρός ''mikrós'' "small" and ''nêsos'' "island") is a subregion of Oceania, consisting of thousands of small islands in the western Pacific Ocean. It has a close shared cultural history with three other isl ...

**
Polynesia
Polynesia (, ; from grc, πολύς "many" and grc, νῆσος "island") ( to, Faka-Polinisia; mi, Porinihia; haw, Polenekia; fj, Kai-Polinesia; sm, Polenisia; rar, Porinetia; ty, Pōrīnetia; tvl, Polenisia; tkl, Polenihia) is a ...

*
Palearctic realm
The Palearctic or Palaearctic is the largest of the eight biogeographic realm
A biogeographic realm or ecozone is the broadest biogeography, biogeographic division of Earth's land surface, based on distributional patterns of terrestrial ani ...
**''
Asia
Asia () is 's largest and most populous , located primarily in the and . It shares the continental of with the continent of and the continental landmass of with both Europe and . Asia covers an area of , about 30% of Earth's total lan ...

''
***''
East Asia
East Asia is the eastern region of Asia, which is defined in both Geography, geographical and culture, ethno-cultural terms. The modern State (polity), states of East Asia include China, Japan, Mongolia, North Korea, South Korea, and Taiwan. ...

north of the
system's foothills to the
arctic
The Arctic ( or ) is a polar regions of Earth, polar region located at the northernmost part of Earth. The Arctic consists of the Arctic Ocean, adjacent seas, and parts of Alaska (United States), Canada, Finland, Greenland (Danish Realm, ...

''
****
****
Tibetan Plateau
The Tibetan Plateau (, also known as the Qinghai–Tibet Plateau or the Qing–Zang Plateau () or as the Himalayan Plateau in India, is a vast elevated plateau
In geology
Geology (from the Ancient Greek γῆ, ''gē'' ("earth") and -λ ...
steppe
****
Yunnan–Guizhou Plateau
Using a wider definition, the Yunnan–Guizhou Highlands make up the light green area on the lower part of this map
The Yunnan–Guizhou Plateau or Yungui Plateau () is a highland region located in southwest China. The region is primarily sprea ...
****
Northeast Asia
Northeast Asia or Northeastern Asia is a geographical subregion of Asia
Asia () is Earth's largest and most populous continent, located primarily in the Eastern Hemisphere, Eastern and Northern Hemisphere, Northern Hemisphere of the Eart ...
****
Russian Far East
The Russian Far East ( rus, Дальний Восток России, r=Dal'niy Vostok Rossii, p=ˈdalʲnʲɪj vɐˈstok rɐˈsʲiɪ) is a region in . It is the easternmost part of and the n continent; and is administered as part of the , w ...

***''
Central Asia
Central Asia is a region in Asia
Asia () is 's largest and most populous , located primarily in the and . It shares the continental of with the continent of and the continental landmass of with both Europe and . Asia covers an area ...

-
Iranian Plateau and north to the arctic.''
****Temperate Asia biocountry
****
Mongolian Plateau
The Mongolian Plateau is the part of the Central Asia, Central Asian Plateau lying between 37°46′-53°08′N and 87°40′-122°15′E and having an area of approximately . It is bounded by the Greater Hinggan Mountains in the east, the Yin Mo ...
****
Eurasian Steppe
The Eurasian Steppe, also simply called the Great Steppe or the steppes, is the vast steppe
File:Steppe of western Kazakhstan in the early spring.jpg, Steppe in Kazakhstan
In physical geography, a steppe () is an ecoregion characteri ...
****Asian Russia (central)
*****Asian-Siberian region
***''
Western Asia
Western Asia, West Asia, or Southwest Asia, is the westernmost subregion
A subregion is a part of a larger region
In geography, regions are areas that are broadly divided by physical characteristics ( physical geography), human impact character ...

''
****
Arabian desert
The Arabian Desert ( ar, ٱلصَّحْرَاء ٱلْعَرَبِيَّة) is a vast desert
upright=1.5, alt=see caption, Sand dunes in the Rub' al Khali ("Empty quarter") in the United Arab Emirates">Rub'_al_Khali.html" ;"title="Sand ...

****Mediterranean
Near East
The Near East ( ar, الشرق الأدنى, al-Sharq al-'Adnā, he, המזרח הקרוב, arc, ܕܢܚܐ ܩܪܒ, fa, خاور نزدیک, Xāvar-e nazdik, tr, Yakın Doğu) is a geographical term which roughly encompasses a transcontinental ...
(Roughly corresponds to the
Levant
The Levant () is an term referring to a large area in the region of . In its narrowest sense, it is equivalent to the , which included present-day , , , , and most of southwest of the middle . In its widest historical sense, the Levant ...

)
****
Anatolian Plateau
The Anatolian Plateau () is a plateau
In geology
Geology (from the Ancient Greek γῆ, ''gē'' ("earth") and -λoγία, ''-logia'', ("study of", "discourse")) is an Earth science concerned with the solid Earth, the rock (geology), rocks ...
****
Transcaucasia
The South Caucasus, also known as Transcaucasia, is a geographical region on the border of Eastern Europe
Eastern Europe is the eastern region of Europe. There is no consistent definition of the precise area it covers, partly because the term ...
**''
Northern Africa
North Africa or Northern Africa is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region, and it is sometimes defined as stretching from the Atlantic shores of Mauritania in th ...

''
***
Atlantic coastal desert
The Atlantic coastal desert is the westernmost ecoregion
An ecoregion (ecological region) or ecozone (ecological zone) is an ecology, ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller tha ...
***
Sahara desert
The Sahara (, ; ar, الصحراء الكبرى, ', 'the Greatest Desert') is a desert on the . With an area of , it is the largest hot in the world and the third largest desert overall, smaller only than the deserts of and the northern . ...

***Mediterranean
Maghreb
The Maghreb (; ar, المغرب, al-Maghrib, lit=the west), also known as Northwest Africa, is the western part of North Africa and the Arab world. The region includes Algeria, Libya, Mauritania (also considered part of West Africa), Morocco and ...

***
**''
Europe
Europe is a continent
A continent is any of several large landmasses. Generally identified by convention (norm), convention rather than any strict criteria, up to seven geographical regions are commonly regarded as continents. Ordered ...

(Northern, Middle, Eastern, Southwestern, and Southeastern Europe biocountries) - Mediterranean to the arctic.''
***European
Mediterranean Basin
In biogeography, the Mediterranean Basin (also known as the Mediterranean region or sometimes Mediterranea) is the region of lands around the Mediterranean Sea
The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by ...
***
Iberian Peninsula
The Iberian Peninsula ,
**
* Aragonese language, Aragonese and Occitan language, Occitan: ''Peninsula Iberica''
**
**
* french: Péninsule Ibérique
* mwl, Península Eibérica
* eu, Iberiar penintsula also known as Iberia, is a peni ...

***
Balkan Peninsula
The Balkans ( ), also known as the Balkan Peninsula, are a geographic area in southeastern Europe with various definitions and meanings, including geopolitical and historical. The region takes its name from the Balkan Mountains that stretch ...

***
North Caucasus
The North Caucasus ( ady, Темыр Къафкъас, Temır Qafqas; kbd, Ишхъэрэ Къаукъаз, İṩxhərə Qauqaz; ce, Къилбаседа Кавказ, Q̇ilbaseda Kavkaz; rus, Северный Кавказ, r=Severnyy Ka ...
***
***
Carpathians
The Carpathian Mountains or Carpathians () are a range of mountains forming an arc throughout Central and Eastern Europe
Central and Eastern Europe is a term encompassing the countries in Central Europe
Central Europe is the central regio ...

***
Scandinavia
Scandinavia; : ''Skadesi-suolu''/''Skađsuâl''. ( ) is a in , with strong historical, cultural, and linguistic ties.
In English usage, ''Scandinavia'' can refer to , , and , sometimes more narrowly to the , or more broadly to include , th ...

***European Russia
***Euro-Siberian region
**
Macaronesia
240px, Macaronesia
Macaronesia (Portuguese language, Portuguese: ''Macaronésia'') is a collection of four volcanic archipelagos in the Atlantic Ocean, North Atlantic Ocean, off the coasts of the continents of Europe and Africa. Each archipelago ...

See also
*
*
Ecological land classificationEcological classification or ecological typology is the classification of land or water into geographical units that represent variation in one or more ecological
Ecology (from el, οἶκος, "house" and el, -λογία, label=none, "study ...
*
References
Biogeography
Ecology terminology
Ecoregions
Biogeographic realms
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