The Interim Biogeographic Regionalisation for Australia (IBRA) is a

biogeographic Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, ...

regionalisation of Australia developed by the Australian government's Department of Sustainability, Environment, Water, Population, and Communities. It was developed for use as a planning tool, for example for the establishment of a

national reserve system Australia's National Reserve System (NRS) is a network of more than 10,000 Commonwealth plus state and territory protected areas which, in combination, on a national scale, protect more than , greater than 17% of the continent, of unique biodi ...

. The first version of IBRA was developed in 1993–94 and published in 1995. Within the broadest scale, Australia is a major part of the

Australasia Australasia is a region that comprises Australia, New Zealand and some neighbouring islands in the Pacific Ocean. The term is used in a number of different contexts, including geopolitically, physiogeographically, philologically, and ecologi ...

biogeographic realm, as developed by the

World Wide Fund for Nature The World Wide Fund for Nature Inc. (WWF) is an international non-governmental organization founded in 1961 that works in the field of wilderness preservation and the reduction of human impact on the environment. It was formerly named the Wor ...

. Based on this system, the world is also split into 14 terrestrial habitats, of which eight are shared by Australia. The Australian land mass is divided into 89

bioregion A bioregion is an ecologically and geographically defined area that is smaller than a biogeographic realm, but larger than an ecoregion or an ecosystem, in the World Wide Fund for Nature classification scheme. There is also an attempt to use the ...

s and 419 subregions. Each region is a land area made up of a group of interacting ecosystems that are repeated in similar form across the landscape. IBRA is updated periodically based on new data, mapping improvements, and review of the existing scheme. The most recent version is IBRA7, developed during 2012, which replaced IBRA6.1.

IBRA regions and subregions

This is a list of region and subregions under IBRA7. Region codes are given in parentheses, followed by area, where known. Images of regions are from IBRA6.1, pending creation of maps for IBRA7.

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

R

S

T

V

W

Y

References

Additional references

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Interim Biogeographic Regionalisation for Australia (IBRA7) regions and codes

Interim Biogeographic Regionalisation for Australia (IBRA7) subregions and codes
{{DEFAULTSORT:Interim Biogeographic Regionalisation For Australia Biogeography of Australia 01 Botany in Australia Natural history of Australia Vegetation of Australia

IBRA regions and subregions

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

R

S

T

V

W

Y

See also

Further reading

References

Additional references