Interim Biogeographic Regionalisation for Australia

The Interim Biogeographic Regionalisation for Australia (IBRA) is a biogeographic 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. The first version of IBRA was developed in 1993–94 and published in 1995.^[1]

Within the broadest scale, Australia is a major part of the Australasia biogeographic realm, as developed by the World Wide Fund for Nature. 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 bioregions 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[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Arnhem Coast	ARC	3,335,669 hectares (8,242,620 acres)	NT
	ARC01	113,180 ha (279,700 acres)
	ARC02	1,741,376 ha (4,303,030 acres)
	ARC03	1,159,659 ha (2,865,580 acres)
Groote	ARC04	268,735 ha (664,060 acres)
Wessels	ARC05	52,720 ha (130,300 acres)
Arnhem Plateau	ARP	2,306,023 hectares (5,698,310 acres)	NT
	ARP01	1,038,621 ha (2,566,490 acres)
	ARP02	1,267,401 ha (3,131,820 acres)
Australian Alps	AUA	1,232,981 hectares (3,046,760 acres)	NSW, Vic
Snowy Mountains	AUA01	713,114 ha (1,762,140 acres)
Victorian Alps	AUA02	519,866 ha (1,284,620 acres)
Avon Wheatbelt	AVW	9,517,104 hectares (23,517,280 acres)	WA
	AVW01	6,524,175 ha (16,121,590 acres)
	AVW02	2,992,929 ha (7,395,690 acres)

B[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Ben Lomond	BEL	657,500 hectares (1,625,000 acres)	Tas
	BEL01
Brigalow Belt North	BBN	33,790,510 hectares (83,498,200 acres)	Qld
	BBN01	763,495 ha (1,886,640 acres)
Bogie River Hills	BBN02	1,054,392 ha (2,605,460 acres)
	BBN03	747,393 ha (1,846,850 acres)
	BBN04	95,821 ha (236,780 acres)
	BBN05	397,935 ha (983,320 acres)
	BBN06	1,316,957 ha (3,254,270 acres)
	BBN07	1,772,127 ha (4,379,020 acres)
	BBN08	466,275 ha (1,152,190 acres)
	BBN09	382,284 ha (944,640 acres)
	BBN10	1,274,731 ha (3,149,930 acres)
	BBN11	2,693,397 ha (6,655,530 acres)
	BBN12	449,269 ha (1,110,170 acres)
	BBN13	1,009,244 ha (2,493,900 acres)
	BBN14	1,250,611 ha (3,090,330 acres)
Brigalow Belt South	BBS	27,219,776 hectares (67,261,530 acres)	Qld / NSW
	BBS01	1,026,214 ha (2,535,830 acres)
	BBS02	749,785 ha (1,852,760 acres)
	BBS03	220,541 ha (544,970 acres)
	BBS04	1,275,970 ha (3,153,000 acres)
	BBS05	30,133 ha (74,460 acres)
	BBS06	715,288 ha (1,767,520 acres)
	BBS07	982,807 ha (2,428,570 acres)
	BBS08	1,547,555 ha (3,824,090 acres)
	BBS09	281,306 ha (695,120 acres)
	BBS10	2,263,686 ha (5,593,690 acres)
	BBS11	652,005 ha (1,611,140 acres)
Southern Downs	BBS12	4,264,666 ha (10,538,220 acres)
Barakula	BBS13	1,301,712 ha (3,216,600 acres)
	BBS14	162,442 ha (401,400 acres)
	BBS15	966,510 ha (2,388,300 acres)
Tara Downs	BBS16	511,339 ha (1,263,550 acres)
	BBS17	1,697,945 ha (4,195,710 acres)
	BBS18	1,219,008 ha (3,012,230 acres)
	BBS19	750,661 ha (1,854,920 acres)
	BBS20	765,231 ha (1,890,930 acres)
	BBS21	624,671 ha (1,543,600 acres)
	BBS22	700,241 ha (1,730,330 acres)
	BBS23	535,392 ha (1,322,980 acres)
	BBS24	1,732,137 ha (4,280,200 acres)
	BBS25	941,752 ha (2,327,120 acres)
Liverpool Range	BBS26	521,960 ha (1,289,800 acres)
	BBS27	203,894 ha (503,830 acres)
	BBS28	303,754 ha (750,590 acres)
Broken Hill Complex	BHC	5,635,422 hectares (13,925,430 acres)	SA / NSW
	BHC01	1,802,996 ha (4,455,300 acres)
	BHC02	630,694 ha (1,558,480 acres)
	BHC03	260,806 ha (644,470 acres)
	BHC04	1,954,973 ha (4,830,840 acres)
	BHC05	279,258 ha (690,060 acres)
	BHC06	706,696 ha (1,746,280 acres)
Burt Plain	BRT	7,379,719 hectares (18,235,680 acres)	NT
Yuendumu	BRT01	2,931,061 ha (7,242,810 acres)
	BRT02	3,531,111 ha (8,725,570 acres)
	BRT03	390,981 ha (966,140 acres)
	BRT04	526,567 ha (1,301,180 acres)

C[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Cape York Peninsula	CYP	12,256,457 hectares (30,286,360 acres)	Qld
	CYP01	2,312,126 hectares (5,713,390 acres)
	CYP02	512,498 hectares (1,266,410 acres)
	CYP03	94,367 hectares (233,190 acres)
	CYP04	1,444,223 hectares (3,568,750 acres)
	CYP05	504,409 hectares (1,246,420 acres)
	CYP06	1,791,228 hectares (4,426,220 acres)
	CYP07	2,848,753 hectares (7,039,420 acres)
	CYP08	2,464,074 hectares (6,088,860 acres)
	CYP09	284,780 hectares (703,700 acres)
Carnarvon	CAR	8,430,172 hectares (20,831,410 acres)	WA
Cape Range	CAR01	2,380,498 hectares (5,882,340 acres)
Wooramel	CAR02	6,049,674 hectares (14,949,070 acres)
Central Arnhem	CEA	3,462,433 hectares (8,555,860 acres)	NT
	CEA01	3,137,973 hectares (7,754,100 acres)
	CEA02	324,460 hectares (801,800 acres)
Central Kimberley	CEK	7,675,587 hectares (18,966,790 acres)	WA
	CEK01	4,397,260 hectares (10,865,900 acres)
	CEK02	2,324,667 hectares (5,744,380 acres)
	CEK03	953,661 hectares (2,356,550 acres)
Central Mackay Coast	CMC	1,464,208 hectares (3,618,140 acres)	Qld
	CMC01	89,179 hectares (220,370 acres)
	CMC02	466,498 hectares (1,152,740 acres)
	CMC03	631,985 hectares (1,561,670 acres)
	CMC04	127,697 hectares (315,550 acres)
	CMC05	67,885 hectares (167,750 acres)
	CMC06	80,964 hectares (200,070 acres)
Central Ranges	CER	10,164,044 hectares (25,115,900 acres)	WA, NT, SA
	CER01	9,214,685 hectares (22,769,980 acres)
	CER02	423,360 hectares (1,046,100 acres)
	CER03	525,998 hectares (1,299,770 acres)
Channel Country	CHC	30,409,437 hectares (75,143,360 acres)	NT, Qld, NSW, SA
	CHC01	2,825,712 hectares (6,982,490 acres)
Sturt Stony Desert	CHC02	8,945,360 hectares (22,104,500 acres)
	CHC03	5,182,219 hectares (12,805,540 acres)
	CHC04	1,456,544 hectares (3,599,200 acres)
	CHC05	4,136,121 hectares (10,220,580 acres)
Coongie	CHC06	1,736,594 hectares (4,291,220 acres)
	CHC07	1,204,027 hectares (2,975,220 acres)
	CHC08	1,798,759 hectares (4,444,830 acres)
	CHC09
	CHC10	139,224 hectares (344,030 acres)
Bulloo	CHC11	1,077,480 hectares (2,662,500 acres)
	CHC12	1,326,712 hectares (3,278,380 acres)
	CHC13	580,685 hectares (1,434,900 acres)
Cobar Peneplain	COP	7,385,346 hectares (18,249,590 acres)	NSW
	COP1	400,236 hectares (989,000 acres)
	COP2	1,773,542 hectares (4,382,520 acres)
	COP3	2,001,425 hectares (4,945,630 acres)
Nymagee	COP4	2,070,061 hectares (5,115,230 acres)
	COP5	1,140,082 hectares (2,817,200 acres)
Coolgardie	COO	12,912,209 hectares (31,906,760 acres)	WA
	COO1	1,843,125 hectares (4,554,460 acres)
	COO2	6,010,838 hectares (14,853,100 acres)
Eastern Goldfields	COO3	5,058,246 hectares (12,499,200 acres)
	COS	17,167 hectares (42,420 acres)

D[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Daly Basin	DAB	2,092,229 hectares (5,170,010 acres)	NT
Daly Basin	DAB01
Dampierland	DAL	8,360,871 hectares (20,660,160 acres)	WA
Fitzroy Trough	DAL01	3,432,084 hectares (8,480,860 acres)
Pindanland	DAL02	4,928,787 hectares (12,179,300 acres)
	DRP	10,699,769 hectares (26,439,710 acres)	Qld / NSW
	DRP01	1,354,799 hectares (3,347,780 acres)
	DRP02	1,151,637 hectares (2,845,760 acres)
	DRP03	4,500,355 hectares (11,120,620 acres)
	DRP04	1,999,951 hectares (4,941,990 acres)
	DRP05	276,573 hectares (683,430 acres)
	DRP06	504,562 hectares (1,246,800 acres)
	DRP07	653,935 hectares (1,615,910 acres)
Great Darling Anabranch	DRP08	147,138 hectares (363,590 acres)
	DRP09	110,819 hectares (273,840 acres)
Darwin Coastal	DAC	2,843,199 hectares (7,025,700 acres)	NT
Darwin Coastal	DAC01
Davenport Murchison Ranges	DMR	5,805,108 hectares (14,344,730 acres)	NT
	DMR01	1,218,621 hectares (3,011,280 acres)
	DMR02	1,589,590 hectares (3,928,000 acres)
	DMR03	2,996,897 hectares (7,405,490 acres)
Desert Uplands	DEU	6,941,095 hectares (17,151,820 acres)	Qld
	DEU01	1,580,384 hectares (3,905,210 acres)
	DEU02	2,866,760 hectares (7,083,900 acres)
	DEU03	1,007,026 hectares (2,488,420 acres)
	DEU04	1,486,926 hectares (3,674,270 acres)

E[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Einasleigh Uplands	EIU	11,625,726 hectares (28,727,790 acres)	Qld
	EIU01	1,041,407 hectares (2,573,370 acres)
Kidston	EIU02	2,929,528 hectares (7,239,020 acres)
	EIU03	1,607,221 hectares (3,971,530 acres)
	EIU04	3,309,590 hectares (8,178,200 acres)
	EIU05	2,076,208 hectares (5,130,420 acres)
	EIU06	661,771 hectares (1,635,270 acres)
Esperance Plains	ESP	2,921,327 hectares (7,218,760 acres)	WA
	ESP01	1,577,938 hectares (3,899,170 acres)
Recherche	ESP02	1,343,390 hectares (3,319,600 acres)
Eyre Yorke Block	EYB	6,120,409 hectares (15,123,860 acres)	SA
	EYB01	438,470 hectares (1,083,500 acres)
	EYB02	1,093,789 hectares (2,702,810 acres)
	EYB03	1,172,576 hectares (2,897,500 acres)
	EYB04	1,096,175 hectares (2,708,710 acres)
	EYB05	2,319,398 hectares (5,731,360 acres)

F[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Finke	FIN	7,267,416 hectares (17,958,180 acres)	NT / SA
Henbury	FIN01	2,257,063 hectares (5,577,320 acres)
	FIN02	1,601,516 hectares (3,957,430 acres)
	FIN03	2,505,610 hectares (6,191,500 acres)
	FIN04	903,228 hectares (2,231,920 acres)
	FLB	6,615,765 hectares (16,347,910 acres)	SA / NSW
Mount Lofty Ranges	FLB01	300,580 hectares (742,700 acres)
	FLB02	1,032,918 hectares (2,552,400 acres)
	FLB02	1,745,479 hectares (4,313,170 acres)
	FLB04	728,317 hectares (1,799,710 acres)
	FLB05	1,846,804 hectares (4,563,550 acres)
	FLB06	961,667 hectares (2,376,330 acres)
Furneaux	FUR	537,543 hectares (1,328,300 acres)	Tas / Vic
Wilsons Promontory	FUR01	41,144 hectares (101,670 acres)
	FUR02	496,398 hectares (1,226,630 acres)

G[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Gascoyne	GAS	18,075,257 hectares (44,664,930 acres)	WA
	GAS01	3,687,030 hectares (9,110,800 acres)
	GAS02	4,718,656 hectares (11,660,050 acres)
	GAS03	9,669,571 hectares (23,894,030 acres)
	GAW	12,002,883 hectares (29,659,770 acres)	SA
	GAW01	1,088,767 hectares (2,690,400 acres)
	GAW02	1,556,182 hectares (3,845,410 acres)
	GAW03	2,049,193 hectares (5,063,670 acres)
	GAW04	1,089,865 hectares (2,693,120 acres)
	GAW05	1,922,414 hectares (4,750,390 acres)
	GAW06	1,439,093 hectares (3,556,080 acres)
	GAW07	1,409,305 hectares (3,482,470 acres)
Commonwealth Hill	GAW08	1,448,062 hectares (3,578,240 acres)
Geraldton Sandplains	GES	3,142,149 hectares (7,764,420 acres)	WA
	GES01	1,969,997 hectares (4,867,970 acres)
	GES02	1,172,152 hectares (2,896,450 acres)
Gibson Desert	GID	15,628,918 hectares (38,619,900 acres)	WA
	GID01	12,714,805 hectares (31,418,970 acres)
	GID02	2,914,114 hectares (7,200,930 acres)
Great Sandy Desert	GSD	39,486,135 hectares (97,572,360 acres)	NT / WA
McLarty	GSD01	12,316,754 hectares (30,435,360 acres)
	GSD02	25,698,395 hectares (63,502,120 acres)
	GSD03	375,668 hectares (928,300 acres)
	GSD04	722,845 hectares (1,786,190 acres)
	GSD05	289,541 hectares (715,470 acres)
	GSD06	82,932 hectares (204,930 acres)
Great Victoria Desert	GVD	42,246,564 hectares (104,393,530 acres)	SA / WA
	GVD01	4,741,854 hectares (11,717,380 acres)
	GVD02	12,590,867 hectares (31,112,710 acres)
	GVD03	11,460,762 hectares (28,320,160 acres)
	GVD04	4,961,542 hectares (12,260,240 acres)
	GVD05	3,663,149 hectares (9,051,840 acres)
	GVD06	4,828,389 hectares (11,931,210 acres)
Gulf Coastal	GUC	2,711,718 hectares (6,700,800 acres)	NT
Limmen	GUC01	12,714,805 hectares (31,418,970 acres)
	GUC02	2,914,114 hectares (7,200,930 acres)
Gulf Fall and Uplands	GFU	11,847,909 hectares (29,276,820 acres)	NT / Qld
	GFU01	9,330,938 hectares (23,057,250 acres)
	GFU02	2,516,971 hectares (6,219,570 acres)
Gulf Plains	GUP	22,041,825 hectares (54,466,540 acres)	NT / Qld
	GUP01	1,057,366 hectares (2,612,810 acres)
	GUP02	1,589,437 hectares (3,927,580 acres)
	GUP03	2,375,110 hectares (5,869,000 acres)
	GUP04	5,262,816 hectares (13,004,700 acres)
	GUP05	3,738,013 hectares (9,236,830 acres)
	GUP06	2,208,468 hectares (5,457,240 acres)
	GUP07	1,831,823 hectares (4,526,530 acres)
	GUP08	2,449,964 hectares (6,053,990 acres)
	GUP09	1,403,937 hectares (3,469,200 acres)
Wellesley Islands	GUP10	124,893 hectares (308,620 acres)

H[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Hampton	HAM	1,088,198 hectares (2,689,000 acres)	WA
Hampton	HAM01

I[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
	ITI	27,329 hectares (67,530 acres)
Christmas Island	ITI01	13,664 hectares (33,760 acres)
Cocos Islands	ITI02	1,463 hectares (3,620 acres)
	ITI03	12,203 hectares (30,150 acres)

J[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Jarrah Forest	JAF	4,509,074 hectares (11,142,160 acres)	WA
	JAF01	1,898,799 hectares (4,692,030 acres)
	JAF02	2,610,275 hectares (6,450,130 acres)

K[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
	KAN	812,415 hectares (2,007,520 acres)	SA
Kangaroo Island	KAN01	441,685 hectares (1,091,430 acres)
	KAN02	370,730 hectares (916,100 acres)
King	KIN	425,567 hectares (1,051,600 acres)	Tas
King	KIN01

L[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Little Sandy Desert	LSD	11,089,857 hectares (27,403,630 acres)	WA
Rudall	LSD01	991,277 hectares (2,449,500 acres)
Trainor	LSD02	10,098,580 hectares (24,954,100 acres)

M[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
MacDonnell Ranges	MAC	3,929,444 hectares (9,709,870 acres)	NT
	MAC01	1,483,959 hectares (3,666,940 acres)
	MAC02	1,092,782 hectares (2,700,320 acres)
	MAC03	1,352,702 hectares (3,342,600 acres)
Mallee	MAL	7,397,559 hectares (18,279,770 acres)	WA
Eastern Mallee	MAL01	3,415,839 hectares (8,440,720 acres)
Western Mallee	MAL02	3,981,720 hectares (9,839,000 acres)
Mitchell Grass Downs	MGD	33,468,761 hectares (82,703,110 acres)	NT / Qld
	MGD01	1,153,283 hectares (2,849,820 acres)
Barkly Tableland	MGD02	9,479,612 hectares (23,424,630 acres)
	MGD03	2,292,026 hectares (5,663,720 acres)
	MGD04	3,715,454 hectares (9,181,090 acres)
	MGD05	2,293,311 hectares (5,666,890 acres)
	MGD06	435,263 hectares (1,075,560 acres)
	MGD07	9,378,817 hectares (23,175,560 acres)
	MGD08	4,720,995 hectares (11,665,830 acres)
Mount Isa Inlier	MII	6,778,263 hectares (16,749,450 acres)	Qld
	MII01	1,333,519 hectares (3,295,200 acres)
	MII02	802,892 hectares (1,983,990 acres)
	MII03	4,641,851 hectares (11,470,260 acres)
Mulga Lands	MUL	25,188,333 hectares (62,241,730 acres)	NSW / Qld
	MUL01	1,991,194 hectares (4,920,350 acres)
	MUL02	1,563,269 hectares (3,862,920 acres)
	MUL03	1,898,731 hectares (4,691,870 acres)
	MUL04	660,369 hectares (1,631,810 acres)
	MUL05	2,492,085 hectares (6,158,080 acres)
	MUL06	1,290,484 hectares (3,188,860 acres)
	MUL07	1,703,985 hectares (4,210,640 acres)
	MUL08	4,790,087 hectares (11,836,560 acres)
	MUL09	1,147,549 hectares (2,835,660 acres)
	MUL10	2,852,104 hectares (7,047,700 acres)
	MUL11	2,007,350 hectares (4,960,300 acres)
	MUL12	479,471 hectares (1,184,800 acres)
	MUL13	399,576 hectares (987,370 acres)
	MUL14	1,074,309 hectares (2,654,680 acres)
	MUL15	301,217 hectares (744,320 acres)
	MUL16	536,556 hectares (1,325,860 acres)
Murchison	MUR	28,120,554 hectares (69,487,400 acres)	WA
	MUR01	21,135,040 hectares (52,225,800 acres)
	MUR02	6,985,514 hectares (17,261,580 acres)
Murray Darling Depression	MDD	19,958,349 hectares (49,318,150 acres)	NSW, SA, Vic
	MDD01	5,439,224 hectares (13,440,620 acres)
Murray Mallee	MDD02	5,037,583 hectares (12,448,140 acres)
	MDD03	249,191 hectares (615,760 acres)
	MDD04	2,391,719 hectares (5,910,070 acres)
Wimmera	MDD05	2,145,380 hectares (5,301,300 acres)
	MDD06	3,662,438 hectares (9,050,080 acres)
	MDD07	1,032,815 hectares (2,552,140 acres)

N[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Nandewar	NAN	2,701,977 hectares (6,676,730 acres)	NSW / Qld
	NAN01	962,254 hectares (2,377,780 acres)
	NAN02	230,854 hectares (570,450 acres)
	NAN03	78,307 hectares (193,500 acres)
	NAN04	1,430,562 hectares (3,535,000 acres)
Naracoorte Coastal Plain	NCP	2,458,215 hectares (6,074,380 acres)	SA / Vic
	NCP01	463,723 hectares (1,145,880 acres)
	NCP02	554,775 hectares (1,370,880 acres)
	NCP03	731,656 hectares (1,807,960 acres)
	NCP04	708,061 hectares (1,749,660 acres)
New England Tablelands	NET	3,002,213 hectares (7,418,630 acres)	NSW
	NET01	151,867 hectares (375,270 acres)
	NET02	24,625 hectares (60,850 acres)
	NET03	473,825 hectares (1,170,850 acres)
	NET04	290,577 hectares (718,030 acres)
	NET05	106,929 hectares (264,230 acres)
	NET06	97,773 hectares (241,600 acres)
	NET07	277,299 hectares (685,220 acres)
	NET08	35,709 hectares (88,240 acres)
	NET09	117,461 hectares (290,250 acres)
	NET10	150,795 hectares (372,620 acres)
	NET11	206,492 hectares (510,250 acres)
	NET12	139,242 hectares (344,070 acres)
	NET13	65,135 hectares (160,950 acres)
Binghi Plateau	NET14	64,555 hectares (159,520 acres)
	NET15	267,999 hectares (662,240 acres)
	NET16	319,096 hectares (788,500 acres)
	NET17	78,461 hectares (193,880 acres)
	NET18	113,767 hectares (281,120 acres)
	NET19	20,606 hectares (50,920 acres)
Northern Kimberley	NOK	8,420,100 hectares (20,807,000 acres)	WA
	NOK01	5,970,915 hectares (14,754,450 acres)
	NOK02	2,449,185 hectares (6,052,070 acres)
NSW North Coast	NNC	3,996,591 hectares (9,875,790 acres)	NSW
	NNC01	59,377 hectares (146,720 acres)
	NNC02	121,338 hectares (299,830 acres)
Dalmorton	NNC03	316,458 hectares (781,980 acres)
	NNC04	188,279 hectares (465,250 acres)
	NNC05	45,815 hectares (113,210 acres)
	NNC06	308,115 hectares (761,370 acres)
	NNC07	729,170 hectares (1,801,800 acres)
	NNC08	20,100 hectares (50,000 acres)
	NNC09	153,349 hectares (378,930 acres)
	NNC10	83,181 hectares (205,540 acres)
Comboyne Plateau	NNC11	123,315 hectares (304,720 acres)
	NNC12	400,916 hectares (990,690 acres)
	NNC13	110,903 hectares (274,050 acres)
Tomalla	NNC14	227,615 hectares (562,450 acres)
	NNC15	113,183 hectares (279,680 acres)
	NNC16	232,750 hectares (575,100 acres)
	NNC17	602,423 hectares (1,488,620 acres)
	NNC18	86,829 hectares (214,560 acres)
	NNC19	73,477 hectares (181,570 acres)
NSW South Western Slopes	NSS	8,681,126 hectares (21,451,530 acres)	NSW / Vic
	NSS01	4,640,857 hectares (11,467,810 acres)
	NSS02	3,938,809 hectares (9,733,010 acres)
Capertee Valley	NSS03	101,460 hectares (250,700 acres)
Nullarbor	NUL	19,722,774 hectares (48,736,040 acres)	SA / WA
	NUL01	5,788,547 hectares (14,303,810 acres)
	NUL02	12,785,260 hectares (31,593,100 acres)
	NUL03	1,148,966 hectares (2,839,160 acres)

O[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Ord Victoria Plain	OVP	12,540,703 hectares (30,988,750 acres)	NT / WA
	OVP01	3,233,873 hectares (7,991,070 acres)
	OVP02	7,728,296 hectares (19,097,040 acres)
	OVP03	74,982 hectares (185,280 acres)
Camfield	OVP04	828,712 hectares (2,047,790 acres)

P[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Pacific Subtropical Islands	PSI	5,817 hectares (14,370 acres)
Lord Howe Island	PSI01	1,909 hectares (4,720 acres)
Norfolk Island	PSI02	3,908 hectares (9,660 acres)
Pine Creek	PCK	2,851,777 hectares (7,046,890 acres)	NT
Pine Creek	PCK01
Pilbara	PIL	17,823,126 hectares (44,041,900 acres)	WA
	PIL01	8,374,728 hectares (20,694,400 acres)
	PIL02	1,951,435 hectares (4,822,100 acres)
	PIL03	5,634,727 hectares (13,923,710 acres)
	PIL04	1,862,236 hectares (4,601,690 acres)

R[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Riverina	RIV	9,704,469 hectares (23,980,270 acres)	NSW, SA, Vic
	RIV01	2,377,523 hectares (5,874,990 acres)
	RIV02	2,946,813 hectares (7,281,730 acres)
	RIV03	1,952,238 hectares (4,824,090 acres)
	RIV04	1,890,627 hectares (4,671,840 acres)
	RIV05	162,003 hectares (400,320 acres)
	RIV06	375,266 hectares (927,300 acres)

S[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Simpson Strzelecki Dunefields	SSD	27,984,283 hectares (69,150,670 acres)	NSW, NT, Qld, SA
Andado	SSD01	1,355,195 hectares (3,348,760 acres)
Simpson Desert	SSD02	12,962,073 hectares (32,029,980 acres)
	SSD03	5,152,029 hectares (12,730,940 acres)
	SSD04	1,032,165 hectares (2,550,540 acres)
Strzelecki Desert	SSD05	7,482,821 hectares (18,490,450 acres)
	SCP	1,749,237 hectares (4,322,460 acres)	Vic
	SCP01	1,246,995 hectares (3,081,390 acres)
	SCP02	237,799 hectares (587,610 acres)
	SCP03	264,443 hectares (653,450 acres)
	SEC	2,532,053 hectares (6,256,840 acres)	NSW / Vic
	SEC01	623,515 hectares (1,540,740 acres)
	SEC02	1,734,517 hectares (4,286,080 acres)
	SEC03	174,020 hectares (430,000 acres)
South Eastern Highlands	SEH	8,375,961 hectares (20,697,450 acres)	ACT, NSW, Vic
	SEH01	1,196,334 hectares (2,956,210 acres)
	SEH02	1,415,806 hectares (3,498,530 acres)
	SEH03	149,857 hectares (370,300 acres)
Strzelecki Ranges	SEH04	342,045 hectares (845,210 acres)
	SEH06	630,454 hectares (1,557,890 acres)
Bungonia	SEH07	431,185 hectares (1,065,480 acres)
Kanangra	SEH08	131,310 hectares (324,500 acres)
	SEH09	466,523 hectares (1,152,800 acres)
	SEH10	293,164 hectares (724,420 acres)
	SEH11	161,486 hectares (399,040 acres)
	SEH12	284,172 hectares (702,200 acres)
	SEH13	504,377 hectares (1,246,340 acres)
	SEH14	541,990 hectares (1,339,300 acres)
	SEH15	479,221 hectares (1,184,180 acres)
	SEH16	1,267,543 hectares (3,132,170 acres)
	SEH17	80,494 hectares (198,910 acres)
South East Queensland	SEQ	7,804,921 hectares (19,286,380 acres)	NSW / Qld
	SEQ01	962,583 hectares (2,378,590 acres)
Moreton Basin	SEQ02	784,969 hectares (1,939,700 acres)
	SEQ03	630,616 hectares (1,558,290 acres)
	SEQ04	351,123 hectares (867,640 acres)
	SEQ05	806,778 hectares (1,993,590 acres)
South Burnett	SEQ06	563,866 hectares (1,393,340 acres)
	SEQ07	859,020 hectares (2,122,700 acres)
	SEQ08	700,181 hectares (1,730,180 acres)
	SEQ09	356,502 hectares (880,940 acres)
Scenic Rim	SEQ10	614,729 hectares (1,519,030 acres)
	SEQ11	325,603 hectares (804,580 acres)
	SEQ12	327,829 hectares (810,080 acres)
	SEQ13	520,901 hectares (1,287,170 acres)
	SVP	2,440,340 hectares (6,030,200 acres)	SA / Vic
	SVP01	2,356,147 hectares (5,822,170 acres)
	SVP02	84,194 hectares (208,050 acres)
Stony Plains	STP	13,166,372 hectares (32,534,810 acres)	SA
	STP01	2,444,385 hectares (6,040,210 acres)
	STP02	2,593,717 hectares (6,409,210 acres)
Murnpeowie	STP03	2,910,385 hectares (7,191,720 acres)
	STP04	158,623 hectares (391,970 acres)
	STP05	693,282 hectares (1,713,140 acres)
	STP06	1,677,111 hectares (4,144,230 acres)
	STP07	2,688,870 hectares (6,644,300 acres)
Sturt Plateau	STU	9,857,531 hectares (24,358,490 acres)	NT
	STU01	1,938,959 hectares (4,791,270 acres)
	STU02	4,333,836 hectares (10,709,140 acres)
	STU03	3,584,736 hectares (8,858,080 acres)
	SAI	49,164 hectares (121,490 acres)	NSW / Vic
Heard and McDonald Islands	SAI01	36,764 hectares (90,850 acres)
Macquarie Island	SAI02	12,400 hectares (31,000 acres)
Swan Coastal Plain	SWA	1,525,798 hectares (3,770,330 acres)	WA
	SWA01	383,465 hectares (947,560 acres)
	SWA02	1,142,334 hectares (2,822,770 acres)
Sydney Basin	SYB	3,629,597 hectares (8,968,930 acres)	NSW
	SYB01	437,384 hectares (1,080,800 acres)
	SYB02	461,515 hectares (1,140,430 acres)
Wollemi	SYB04	687,622 hectares (1,699,150 acres)
Yengo	SYB05	461,327 hectares (1,139,960 acres)
	SYB06	211,494 hectares (522,610 acres)
	SYB07	148,389 hectares (366,680 acres)
Cumberland	SYB08	275,693 hectares (681,250 acres)
	SYB09	257,572 hectares (636,470 acres)
	SYB10	153,839 hectares (380,140 acres)
	SYB11	96,903 hectares (239,450 acres)
Illawarra	SYB12	122,752 hectares (303,330 acres)
	SYB13	179,126 hectares (442,630 acres)
	SYB14	135,981 hectares (336,020 acres)

T[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Tanami	TAN	25,997,277 hectares (64,240,670 acres)	NT / WA
Tanami Desert	TAN01	20,769,151 hectares (51,321,690 acres)
	TAN02	1,600,893 hectares (3,955,890 acres)
	TAN03	3,627,233 hectares (8,963,090 acres)
Tasmanian Central Highlands	TCH	767,849 hectares (1,897,400 acres)	Tas
Central Highlands	TCH01
Tasmanian Northern Midlands	TNM	415,445 hectares (1,026,590 acres)	Tas
Northern Midlands	TNM01
Tasmanian Northern Slopes	TNS	623,103 hectares (1,539,720 acres)	Tas
Northern Slopes	TNS01
Tasmanian South East	TSE	1,131,822 hectares (2,796,790 acres)	Tas
South East	TSE01
Tasmanian Southern Ranges	TSR	757,228 hectares (1,871,150 acres)	Tas
Southern Ranges	TSR01
Tasmanian West	TWE	1,565,077 hectares (3,867,390 acres)	Tas
West	TWE01
	TIW	1,010,580 hectares (2,497,200 acres)	NT
	TIW01	748,927 hectares (1,850,640 acres)
	TIW02	261,652 hectares (646,560 acres)

V[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Victoria Bonaparte	VIB	7,301,242 hectares (18,041,760 acres)	NT / WA
	VIB01	6,441,592 hectares (15,917,520 acres)
	VIB02	170,646 hectares (421,680 acres)
	VIB03	689,004 hectares (1,702,570 acres)
	VIM	3,469,789 hectares (8,574,040 acres)	Vic
	VIM01	1,326,133 hectares (3,276,950 acres)
	VIM02	1,217,922 hectares (3,009,550 acres)
	VIM03	237,416 hectares (586,670 acres)
	VIM04	688,318 hectares (1,700,870 acres)

W[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Warren	WAR	844,771 hectares (2,087,470 acres)	WA
Warren	WAR01
Wet Tropics	WET	1,989,107 hectares (4,915,190 acres)	Qld
	WET01	220,920 hectares (545,900 acres)
	WET02	162,958 hectares (402,680 acres)
	WET03	195,200 hectares (482,000 acres)
	WET04	177,037 hectares (437,470 acres)
	WET05	233,751 hectares (577,610 acres)
	WET06	257,594 hectares (636,530 acres)
	WET07	271,062 hectares (669,810 acres)
	WET08	112,652 hectares (278,370 acres)
	WET09	357,932 hectares (884,470 acres)

Y[]

IBRA regions and subregions: IBRA7
IBRA region / subregion	IBRA code	Area	States	Location in Australia
Yalgoo	YAL	5,087,577 hectares (12,571,680 acres)	WA
	YAL01	1,588,634 hectares (3,925,600 acres)
	YAL02	3,498,943 hectares (8,646,080 acres)

See also[]

• Ecoregions in Australia
• Integrated Marine and Coastal Regionalisation of Australia (IMCRA)

Further reading[]

• Haque, Md. Mohasinul; Nipperess, David A.; Gallagher, Rachael V.; Beaumont, Linda J. (2017). "How well documented is Australia's flora? Understanding spatial bias in vouchered plant specimens". Austral Ecology. 42 (6): 690–699. doi:10.1111/aec.12487. ISSN 1442-9985. (Discusses IBRA regions most likely to benefit from targeted floral sampling)

References[]

Additional references[]

• "Australia's bioregions (IBRA)". Department of Sustainability, Environment, Water, Population and Communities. Commonwealth of Australia. 2012. Retrieved 13 January 2013.
• Interim Biogeographic Regionalisation for Australia (IBRA7) regions and codes.
• Interim Biogeographic Regionalisation for Australia (IBRA7) subregions and codes.