Editing Biogeographic realm (section)

==Terrestrial biogeographic realms==
=== Udvardy biogeographic realms ===
{{Main|List of biogeographic provinces}}

===WWF / Global 200 biogeographic realms===
{{Main|Global 200}}
The [[World Wildlife Fund]] scheme{{r|BBCecozones|OlsonDinerstein1998|OlsonETAL2001}} is broadly similar to [[Miklos Udvardy]]'s system,{{r|Udvardy1975}} the chief difference being the delineation of the Australasian realm relative to the Antarctic, Oceanic, and Indomalayan realms. In the WWF system, the Australasia realm includes [[Australia]], [[Tasmania]], the islands of [[Wallacea]], [[New Guinea]], the [[East Melanesian Islands]], [[New Caledonia]], and [[New Zealand]]. Udvardy's Australian realm includes only Australia and Tasmania; he places [[Wallacea]] in the Indomalayan Realm, New Guinea, New Caledonia, and East Melanesia in the Oceanian Realm, and New Zealand in the Antarctic Realm.

{|class=wikitable
|-
!rowspan=2|Biogeographic<br />realm
!colspan=2|Area
!rowspan=2|Lands included
|-
!million square kilometres
!million square miles
|-
| [[Palearctic realm|Palearctic]]
| {{convert|54.1|km2|disp=table}}
| The bulk of [[Eurasia]] and [[North Africa]].
|-
| [[Nearctic realm|Nearctic]]
| {{convert|22.9|km2|disp=table}}
| [[Greenland]] and most of [[North America]].
|-
| [[Afrotropical realm|Afrotropic]]
| {{convert|22.1|km2|disp=table}}
| [[Sub-Saharan Africa|Trans-Saharan Africa]], [[Madagascar]] and [[Arabian Peninsula|Arabia]].
|-
| [[Neotropical realm|Neotropic]]
| {{convert|19.0|km2|disp=table}}
| [[South America]], [[Central America]], the [[Caribbean]], [[South Florida]] and the [[Falkland Islands]].
|-
| [[Australasian realm|Australasia]]
| {{convert|7.6|km2|disp=table}}
| [[Australia]], [[Melanesia]], [[New Zealand]], [[Lesser Sunda Islands]], [[Sulawesi]], [[Maluku Islands]] and the neighbouring islands. The northern boundary of this zone is known as the [[Wallace Line]].
|-
| [[Indomalayan realm|Indomalaya]]
| {{convert|7.5|km2|disp=table}}
| The [[Indian subcontinent]], [[Southeast Asia]], [[northern and southern China|southern China]] and most of the [[Greater Sunda Islands]].
|-
| [[Oceanian realm|Oceania]]
| {{convert|1.0|km2|disp=table}}
| [[Polynesia]] (except New Zealand), [[Micronesia]], and the [[Fiji|Fijian Islands]].
|-
| [[Antarctic realm|Antarctic]]
| {{convert|0.3|km2|disp=table}}
| [[Antarctica]], [[Alexander Island]], [[South Georgia and the South Sandwich Islands]].
|}

The [[Palearctic realm|Palearctic]] and [[Nearctic realm|Nearctic]] are sometimes grouped into the [[Holarctic realm]].

===Morrone biogeographic kingdoms===
Following the nomenclatural conventions set out in the [[International Code of Area Nomenclature]], Morrone{{r|Morrone2015}} defined the next biogeographic kingdoms (or realms) and regions:
* Holarctic kingdom Heilprin (1887)
** Nearctic region Sclater (1858)
** Palearctic region Sclater (1858)
* Holotropical kingdom Rapoport (1968)
** Neotropical region Sclater (1858)
** Ethiopian region Sclater (1858)
** Oriental region Wallace (1876)
* Austral kingdom Engler (1899)
** Cape region Grisebach (1872)
** Andean region Engler (1882)
** Australian region Sclater (1858)
** Antarctic region Grisebach (1872)
* Transition zones: 
** Mexican transition zone (Nearctic–Neotropical transition)
** Saharo-Arabian transition zone (Palearctic–Ethiopian transition)
** Chinese transition zone (Palearctic–Oriental transition zone transition) 
** Indo-Malayan, Indonesian or Wallace's transition zone (Oriental–Australian transition)
** South American transition zone (Neotropical–Austral transition)