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.

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.

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 / subregionIBRA codeAreaStatesLocation in Australia
Arnhem CoastARC3,335,669 hectares (8,242,620 acres)NT
MurgenellaARC01113,180 ha (279,700 acres)
ManingridaARC021,741,376 ha (4,303,030 acres)
NhulunbuyARC031,159,659 ha (2,865,580 acres)
GrooteARC04268,735 ha (664,060 acres)
WesselsARC0552,720 ha (130,300 acres)
Arnhem PlateauARP2,306,023 hectares (5,698,310 acres)NT
AlligatorARP011,038,621 ha (2,566,490 acres)
MainoruARP021,267,401 ha (3,131,820 acres)
Australian AlpsAUA1,232,981 hectares (3,046,760 acres)NSW, Vic
Snowy MountainsAUA01713,114 ha (1,762,140 acres)
Victorian AlpsAUA02519,866 ha (1,284,620 acres)
Avon WheatbeltAVW9,517,104 hectares (23,517,280 acres)WA
MerredinAVW016,524,175 ha (16,121,590 acres)
KatanningAVW022,992,929 ha (7,395,690 acres)

B

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
Ben LomondBEL657,500 hectares (1,625,000 acres)Tas
Ben Lomond (subregion)BEL01
Brigalow Belt NorthBBN33,790,510 hectares (83,498,200 acres)Qld
Townsville PlainsBBN01763,495 ha (1,886,640 acres)
Bogie River HillsBBN021,054,392 ha (2,605,460 acres)
Cape River HillsBBN03747,393 ha (1,846,850 acres)
Beucazon HillsBBN0495,821 ha (236,780 acres)
Wyarra HillsBBN05397,935 ha (983,320 acres)
Northern Bowen BasinBBN061,316,957 ha (3,254,270 acres)
Belyando DownsBBN071,772,127 ha (4,379,020 acres)
Upper Belyando FloodoutBBN08466,275 ha (1,152,190 acres)
Anakie InlierBBN09382,284 ha (944,640 acres)
Basalt DownsBBN101,274,731 ha (3,149,930 acres)
Isaac-Comet DownsBBN112,693,397 ha (6,655,530 acres)
Nebo-Connors RangesBBN12449,269 ha (1,110,170 acres)
South Drummond BasinBBN131,009,244 ha (2,493,900 acres)
Marlborough PlainsBBN141,250,611 ha (3,090,330 acres)
Brigalow Belt SouthBBS27,219,776 hectares (67,261,530 acres)Qld / NSW
Claude River DownsBBS011,026,214 ha (2,535,830 acres)
WoorabindaBBS02749,785 ha (1,852,760 acres)
Boomer RangeBBS03220,541 ha (544,970 acres)
Mount Morgan RangesBBS041,275,970 ha (3,153,000 acres)
Callide Creek DownsBBS0530,133 ha (74,460 acres)
ArcadiaBBS06715,288 ha (1,767,520 acres)
Dawson River DownsBBS07982,807 ha (2,428,570 acres)
Banana-Auburn RangesBBS081,547,555 ha (3,824,090 acres)
Buckland BasaltsBBS09281,306 ha (695,120 acres)
Carnarvon RangesBBS102,263,686 ha (5,593,690 acres)
Taroom DownsBBS11652,005 ha (1,611,140 acres)
Southern DownsBBS124,264,666 ha (10,538,220 acres)
BarakulaBBS131,301,712 ha (3,216,600 acres)
Dulacca DownsBBS14162,442 ha (401,400 acres)
Weribone HighBBS15966,510 ha (2,388,300 acres)
Tara DownsBBS16511,339 ha (1,263,550 acres)
Eastern Darling DownsBBS171,697,945 ha (4,195,710 acres)
Inglewood SandstonesBBS181,219,008 ha (3,012,230 acres)
Moonie-Commoron FloodoutBBS19750,661 ha (1,854,920 acres)
Moonie-Barwon InterfluveBBS20765,231 ha (1,890,930 acres)
Northern BasaltsBBS21624,671 ha (1,543,600 acres)
Northern OutwashBBS22700,241 ha (1,730,330 acres)
Pilliga OutwashBBS23535,392 ha (1,322,980 acres)
PilligaBBS241,732,137 ha (4,280,200 acres)
Liverpool PlainsBBS25941,752 ha (2,327,120 acres)
Liverpool RangeBBS26521,960 ha (1,289,800 acres)
Talbragar ValleyBBS27203,894 ha (503,830 acres)
NarrandoolBBS28303,754 ha (750,590 acres)
Broken Hill ComplexBHC5,635,422 hectares (13,925,430 acres)SA / NSW
Barrier RangeBHC011,802,996 ha (4,455,300 acres)
Mootwingee DownsBHC02630,694 ha (1,558,480 acres)
Scopes RangeBHC03260,806 ha (644,470 acres)
Barrier Range OutwashBHC041,954,973 ha (4,830,840 acres)
BimbowrieBHC05279,258 ha (690,060 acres)
CurnamonaBHC06706,696 ha (1,746,280 acres)
Burt PlainBRT7,379,719 hectares (18,235,680 acres)NT
YuendumuBRT012,931,061 ha (7,242,810 acres)
AtartingaBRT023,531,111 ha (8,725,570 acres)
Mount ChappleBRT03390,981 ha (966,140 acres)
DulcieBRT04526,567 ha (1,301,180 acres)

C

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
Cape York PeninsulaCYP12,256,457 hectares (30,286,360 acres)Qld
Coen - Yambo InlierCYP012,312,126 hectares (5,713,390 acres)
Starke Coastal LowlandsCYP02512,498 hectares (1,266,410 acres)
Cape York - Torres StraitCYP0394,367 hectares (233,190 acres)
Jardine - Pascoe SandstonesCYP041,444,223 hectares (3,568,750 acres)
Battle Camp SandstonesCYP05504,409 hectares (1,246,420 acres)
Laura LowlandsCYP061,791,228 hectares (4,426,220 acres)
Weipa PlateauCYP072,848,753 hectares (7,039,420 acres)
(Northern) Holroyd PlainCYP082,464,074 hectares (6,088,860 acres)
Coastal PlainsCYP09284,780 hectares (703,700 acres)
CarnarvonCAR8,430,172 hectares (20,831,410 acres)WA
Cape RangeCAR012,380,498 hectares (5,882,340 acres)
WooramelCAR026,049,674 hectares (14,949,070 acres)
Central ArnhemCEA3,462,433 hectares (8,555,860 acres)NT
WiltonCEA013,137,973 hectares (7,754,100 acres)
ParsonCEA02324,460 hectares (801,800 acres)
Central KimberleyCEK7,675,587 hectares (18,966,790 acres)WA
PentecostCEK014,397,260 hectares (10,865,900 acres)
HartCEK022,324,667 hectares (5,744,380 acres)
Mount Eliza (Kimberley)CEK03953,661 hectares (2,356,550 acres)
Central Mackay CoastCMC1,464,208 hectares (3,618,140 acres)Qld
WhitsundayCMC0189,179 hectares (220,370 acres)
Proserpine - Sarina LowlandsCMC02466,498 hectares (1,152,740 acres)
Clarke - Connors RangesCMC03631,985 hectares (1,561,670 acres)
ByfieldCMC04127,697 hectares (315,550 acres)
ManifoldCMC0567,885 hectares (167,750 acres)
DebellaCMC0680,964 hectares (200,070 acres)
Central RangesCER10,164,044 hectares (25,115,900 acres)WA, NT, SA
Mann-Musgrave BlockCER019,214,685 hectares (22,769,980 acres)
WataruCER02423,360 hectares (1,046,100 acres)
Everard BlockCER03525,998 hectares (1,299,770 acres)
Channel CountryCHC30,409,437 hectares (75,143,360 acres)NT, Qld, NSW, SA
Toko PlainsCHC012,825,712 hectares (6,982,490 acres)
Sturt Stony DesertCHC028,945,360 hectares (22,104,500 acres)
Goneaway TablelandsCHC035,182,219 hectares (12,805,540 acres)
Diamantina-EyreCHC041,456,544 hectares (3,599,200 acres)
Cooper-Diamantina PlainsCHC054,136,121 hectares (10,220,580 acres)
CoongieCHC061,736,594 hectares (4,291,220 acres)
Lake PureCHC071,204,027 hectares (2,975,220 acres)
Noccundra SlopesCHC081,798,759 hectares (4,444,830 acres)
Tibooburra DownsCHC09
Core RangesCHC10139,224 hectares (344,030 acres)
BullooCHC111,077,480 hectares (2,662,500 acres)
Bulloo DunefieldsCHC121,326,712 hectares (3,278,380 acres)
Central DepressionCHC13580,685 hectares (1,434,900 acres)
Cobar PeneplainCOP7,385,346 hectares (18,249,590 acres)NSW
Boorindal PlainsCOP1400,236 hectares (989,000 acres)
Barnato DownsCOP21,773,542 hectares (4,382,520 acres)
Canbelego DownsCOP32,001,425 hectares (4,945,630 acres)
NymageeCOP42,070,061 hectares (5,115,230 acres)
Lachlan PlainsCOP51,140,082 hectares (2,817,200 acres)
CoolgardieCOO12,912,209 hectares (31,906,760 acres)WA
MardabillaCOO11,843,125 hectares (4,554,460 acres)
Southern CrossCOO26,010,838 hectares (14,853,100 acres)
Eastern GoldfieldsCOO35,058,246 hectares (12,499,200 acres)
Coral SeaCOS17,167 hectares (42,420 acres)

D

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
Daly BasinDAB2,092,229 hectares (5,170,010 acres)NT
Daly BasinDAB01
DampierlandDAL8,360,871 hectares (20,660,160 acres)WA
Fitzroy TroughDAL013,432,084 hectares (8,480,860 acres)
PindanlandDAL024,928,787 hectares (12,179,300 acres)
Darling Riverine PlainsDRP10,699,769 hectares (26,439,710 acres)Qld / NSW
Culgoa-BokharaDRP011,354,799 hectares (3,347,780 acres)
Warrambool-MoonieDRP021,151,637 hectares (2,845,760 acres)
Castlereagh-BarwonDRP034,500,355 hectares (11,120,620 acres)
Bogan-MacquarieDRP041,999,951 hectares (4,941,990 acres)
Louth PlainsDRP05276,573 hectares (683,430 acres)
Wilcannia PlainsDRP06504,562 hectares (1,246,800 acres)
MenindeeDRP07653,935 hectares (1,615,910 acres)
Great Darling AnabranchDRP08147,138 hectares (363,590 acres)
Pooncarie-DarlingDRP09110,819 hectares (273,840 acres)
Darwin CoastalDAC2,843,199 hectares (7,025,700 acres)NT
Darwin CoastalDAC01
Davenport Murchison RangesDMR5,805,108 hectares (14,344,730 acres)NT
Ashburton RangeDMR011,218,621 hectares (3,011,280 acres)
DavenportDMR021,589,590 hectares (3,928,000 acres)
BarklyDMR032,996,897 hectares (7,405,490 acres)
Desert UplandsDEU6,941,095 hectares (17,151,820 acres)Qld
Prairie-Torrens Creeks AlluvialsDEU011,580,384 hectares (3,905,210 acres)
Alice TablelandDEU022,866,760 hectares (7,083,900 acres)
Cape-Campaspe PlainsDEU031,007,026 hectares (2,488,420 acres)
JerichoDEU041,486,926 hectares (3,674,270 acres)

E

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
Einasleigh UplandsEIU11,625,726 hectares (28,727,790 acres)Qld
Georgetown - CroydonEIU011,041,407 hectares (2,573,370 acres)
KidstonEIU022,929,528 hectares (7,239,020 acres)
Hodgkinson BasinEIU031,607,221 hectares (3,971,530 acres)
Broken RiverEIU043,309,590 hectares (8,178,200 acres)
Undara - Toomba BasaltsEIU052,076,208 hectares (5,130,420 acres)
Herberton - WairunaEIU06661,771 hectares (1,635,270 acres)
Esperance PlainsESP2,921,327 hectares (7,218,760 acres)WA
FitzgeraldESP011,577,938 hectares (3,899,170 acres)
RechercheESP021,343,390 hectares (3,319,600 acres)
Eyre Yorke BlockEYB6,120,409 hectares (15,123,860 acres)SA
Southern YorkeEYB01438,470 hectares (1,083,500 acres)
St VincentEYB021,093,789 hectares (2,702,810 acres)
Eyre HillsEYB031,172,576 hectares (2,897,500 acres)
TaliaEYB041,096,175 hectares (2,708,710 acres)
Eyre MalleeEYB052,319,398 hectares (5,731,360 acres)

F

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
FinkeFIN7,267,416 hectares (17,958,180 acres)NT / SA
HenburyFIN012,257,063 hectares (5,577,320 acres)
Finke RiverFIN021,601,516 hectares (3,957,430 acres)
TieyonFIN032,505,610 hectares (6,191,500 acres)
PedirkaFIN04903,228 hectares (2,231,920 acres)
Flinders Lofty BlockFLB6,615,765 hectares (16,347,910 acres)SA / NSW
Mount Lofty RangesFLB01300,580 hectares (742,700 acres)
BroughtonFLB021,032,918 hectares (2,552,400 acres)
Olary SpurFLB021,745,479 hectares (4,313,170 acres)
Southern FlindersFLB04728,317 hectares (1,799,710 acres)
Northern FlindersFLB051,846,804 hectares (4,563,550 acres)
Central FlindersFLB06961,667 hectares (2,376,330 acres)
FurneauxFUR537,543 hectares (1,328,300 acres)Tas / Vic
Wilsons PromontoryFUR0141,144 hectares (101,670 acres)
FlindersFUR02496,398 hectares (1,226,630 acres)

G

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
GascoyneGAS18,075,257 hectares (44,664,930 acres)WA
AshburtonGAS013,687,030 hectares (9,110,800 acres)
CarnegieGAS024,718,656 hectares (11,660,050 acres)
AugustusGAS039,669,571 hectares (23,894,030 acres)
GawlerGAW12,002,883 hectares (29,659,770 acres)SA
Myall PlainsGAW011,088,767 hectares (2,690,400 acres)
Gawler VolcanicsGAW021,556,182 hectares (3,845,410 acres)
Gawler LakesGAW032,049,193 hectares (5,063,670 acres)
Arcoona PlateauGAW041,089,865 hectares (2,693,120 acres)
KingoonyaGAW051,922,414 hectares (4,750,390 acres)
TorrensGAW061,439,093 hectares (3,556,080 acres)
RoxbyGAW071,409,305 hectares (3,482,470 acres)
Commonwealth HillGAW081,448,062 hectares (3,578,240 acres)
Geraldton SandplainsGES3,142,149 hectares (7,764,420 acres)WA
Geraldton HillsGES011,969,997 hectares (4,867,970 acres)
Leseur SandplainGES021,172,152 hectares (2,896,450 acres)
Gibson DesertGID15,628,918 hectares (38,619,900 acres)WA
Lateritic PlainGID0112,714,805 hectares (31,418,970 acres)
Dune FieldGID022,914,114 hectares (7,200,930 acres)
Great Sandy DesertGSD39,486,135 hectares (97,572,360 acres)NT / WA
McLartyGSD0112,316,754 hectares (30,435,360 acres)
MackayGSD0225,698,395 hectares (63,502,120 acres)
EhrenbergGSD03375,668 hectares (928,300 acres)
AmedeusGSD04722,845 hectares (1,786,190 acres)
Lake BennettGSD05289,541 hectares (715,470 acres)
Lake LewisGSD0682,932 hectares (204,930 acres)
Great Victoria DesertGVD42,246,564 hectares (104,393,530 acres)SA / WA
ShieldGVD014,741,854 hectares (11,717,380 acres)
CentralGVD0212,590,867 hectares (31,112,710 acres)
MaralingaGVD0311,460,762 hectares (28,320,160 acres)
KintoreGVD044,961,542 hectares (12,260,240 acres)
TallaringaGVD053,663,149 hectares (9,051,840 acres)
YellabinnaGVD064,828,389 hectares (11,931,210 acres)
Gulf CoastalGUC2,711,718 hectares (6,700,800 acres)NT
LimmenGUC0112,714,805 hectares (31,418,970 acres)
PellewsGUC022,914,114 hectares (7,200,930 acres)
Gulf Fall and UplandsGFU11,847,909 hectares (29,276,820 acres)NT / Qld
McArthurGFU019,330,938 hectares (23,057,250 acres)
NicholsonGFU022,516,971 hectares (6,219,570 acres)
Gulf PlainsGUP22,041,825 hectares (54,466,540 acres)NT / Qld
Karumba PlainsGUP011,057,366 hectares (2,612,810 acres)
Armraynald PlainsGUP021,589,437 hectares (3,927,580 acres)
Woondoola PlainsGUP032,375,110 hectares (5,869,000 acres)
Mitchell-Gilbert FansGUP045,262,816 hectares (13,004,700 acres)
Claraville PlainsGUP053,738,013 hectares (9,236,830 acres)
Holroyd Plain-Red PlateauGUP062,208,468 hectares (5,457,240 acres)
Doomadgee PlainsGUP071,831,823 hectares (4,526,530 acres)
Donors PlateauGUP082,449,964 hectares (6,053,990 acres)
Gilberton PlateauGUP091,403,937 hectares (3,469,200 acres)
Wellesley IslandsGUP10124,893 hectares (308,620 acres)

H

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
HamptonHAM1,088,198 hectares (2,689,000 acres)WA
HamptonHAM01

I

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
Indian Tropical IslandsITI27,329 hectares (67,530 acres)
Christmas IslandITI0113,664 hectares (33,760 acres)
Cocos IslandsITI021,463 hectares (3,620 acres)
Timor Sea Coral IslandsITI0312,203 hectares (30,150 acres)

J

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
Jarrah ForestJAF4,509,074 hectares (11,142,160 acres)WA
Northern Jarrah ForestJAF011,898,799 hectares (4,692,030 acres)
Southern Jarrah ForestJAF022,610,275 hectares (6,450,130 acres)

K

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
KanmantooKAN812,415 hectares (2,007,520 acres)SA
Kangaroo IslandKAN01441,685 hectares (1,091,430 acres)
FleurieuKAN02370,730 hectares (916,100 acres)
KingKIN425,567 hectares (1,051,600 acres)Tas
KingKIN01

L

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
Little Sandy DesertLSD11,089,857 hectares (27,403,630 acres)WA
RudallLSD01991,277 hectares (2,449,500 acres)
TrainorLSD0210,098,580 hectares (24,954,100 acres)

M

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
MacDonnell RangesMAC3,929,444 hectares (9,709,870 acres)NT
McDonnellMAC011,483,959 hectares (3,666,940 acres)
WatarrkaMAC021,092,782 hectares (2,700,320 acres)
Hartz RangeMAC031,352,702 hectares (3,342,600 acres)
MalleeMAL7,397,559 hectares (18,279,770 acres)WA
Eastern MalleeMAL013,415,839 hectares (8,440,720 acres)
Western MalleeMAL023,981,720 hectares (9,839,000 acres)
Mitchell Grass DownsMGD33,468,761 hectares (82,703,110 acres)NT / Qld
SylvesterMGD011,153,283 hectares (2,849,820 acres)
Barkly TablelandMGD029,479,612 hectares (23,424,630 acres)
Georgina LimestoneMGD032,292,026 hectares (5,663,720 acres)
Southwestern DownsMGD043,715,454 hectares (9,181,090 acres)
Kynuna PlateauMGD052,293,311 hectares (5,666,890 acres)
Northern DownsMGD06435,263 hectares (1,075,560 acres)
Central DownsMGD079,378,817 hectares (23,175,560 acres)
Southern Wooded DownsMGD084,720,995 hectares (11,665,830 acres)
Mount Isa InlierMII6,778,263 hectares (16,749,450 acres)Qld
Southwestern Plateaus and FloodoutsMII011,333,519 hectares (3,295,200 acres)
ThorntoniaMII02802,892 hectares (1,983,990 acres)
Mount IsaMII034,641,851 hectares (11,470,260 acres)
Mulga LandsMUL25,188,333 hectares (62,241,730 acres)NSW / Qld
West Balonne PlainsMUL011,991,194 hectares (4,920,350 acres)
Eastern Mulga PlainsMUL021,563,269 hectares (3,862,920 acres)
Nebine Plains, Block RangeMUL031,898,731 hectares (4,691,870 acres)
North Eastern PlainsMUL04660,369 hectares (1,631,810 acres)
Warrego PlainsMUL052,492,085 hectares (6,158,080 acres)
Langlo PlainsMUL061,290,484 hectares (3,188,860 acres)
Cuttaburra-ParooMUL071,703,985 hectares (4,210,640 acres)
West WarregoMUL084,790,087 hectares (11,836,560 acres)
Northern UplandsMUL091,147,549 hectares (2,835,660 acres)
West BullooMUL102,852,104 hectares (7,047,700 acres)
Urisino SandplainsMUL112,007,350 hectares (4,960,300 acres)
Warrego SandsMUL12479,471 hectares (1,184,800 acres)
Kerribree BasinMUL13399,576 hectares (987,370 acres)
White Cliffs PlateauMUL141,074,309 hectares (2,654,680 acres)
Paroo OverflowMUL15301,217 hectares (744,320 acres)
Paroo-Darling SandsMUL16536,556 hectares (1,325,860 acres)
MurchisonMUR28,120,554 hectares (69,487,400 acres)WA
Eastern MurchisonMUR0121,135,040 hectares (52,225,800 acres)
Western MurchisonMUR026,985,514 hectares (17,261,580 acres)
Murray Darling DepressionMDD19,958,349 hectares (49,318,150 acres)NSW, SA, Vic
South Olary PlainMDD015,439,224 hectares (13,440,620 acres)
Murray MalleeMDD025,037,583 hectares (12,448,140 acres)
Murray Lakes and CoorongMDD03249,191 hectares (615,760 acres)
Lowan MalleeMDD042,391,719 hectares (5,910,070 acres)
WimmeraMDD052,145,380 hectares (5,301,300 acres)
Darling DepressionMDD063,662,438 hectares (9,050,080 acres)
BraemerMDD071,032,815 hectares (2,552,140 acres)

N

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
NandewarNAN2,701,977 hectares (6,676,730 acres)NSW / Qld
Nandewar Northern ComplexNAN01962,254 hectares (2,377,780 acres)
Inverell BasaltsNAN02230,854 hectares (570,450 acres)
KaputarNAN0378,307 hectares (193,500 acres)
PeelNAN041,430,562 hectares (3,535,000 acres)
Naracoorte Coastal PlainNCP2,458,215 hectares (6,074,380 acres)SA / Vic
BridgewaterNCP01463,723 hectares (1,145,880 acres)
Glenelg PlainNCP02554,775 hectares (1,370,880 acres)
LucindaleNCP03731,656 hectares (1,807,960 acres)
TintinaraNCP04708,061 hectares (1,749,660 acres)
New England TablelandsNET3,002,213 hectares (7,418,630 acres)NSW
Bundarra DownsNET01151,867 hectares (375,270 acres)
Beardy River HillsNET0224,625 hectares (60,850 acres)
Walcha PlateauNET03473,825 hectares (1,170,850 acres)
Armidale PlateauNET04290,577 hectares (718,030 acres)
Wongwibinda PlateauNET05106,929 hectares (264,230 acres)
Deepwater DownsNET0697,773 hectares (241,600 acres)
Glenn Innes-Guyra BasaltsNET07277,299 hectares (685,220 acres)
Ebor BasaltsNET0835,709 hectares (88,240 acres)
Moredun VolcanicsNET09117,461 hectares (290,250 acres)
Severn River VolcanicsNET10150,795 hectares (372,620 acres)
Northeast Forest LandsNET11206,492 hectares (510,250 acres)
Tenterfield PlateauNET12139,242 hectares (344,070 acres)
Yarrowyck-Kentucky DownsNET1365,135 hectares (160,950 acres)
Binghi PlateauNET1464,555 hectares (159,520 acres)
Stanthorpe PlateauNET15267,999 hectares (662,240 acres)
Eastern NandewarsNET16319,096 hectares (788,500 acres)
Tingha PlateauNET1778,461 hectares (193,880 acres)
NightcapNET18113,767 hectares (281,120 acres)
Round MountainNET1920,606 hectares (50,920 acres)
Northern KimberleyNOK8,420,100 hectares (20,807,000 acres)WA
MitchellNOK015,970,915 hectares (14,754,450 acres)
BerkeleyNOK022,449,185 hectares (6,052,070 acres)
NSW North CoastNNC3,996,591 hectares (9,875,790 acres)NSW
WashpoolNNC0159,377 hectares (146,720 acres)
Port Macquariealign=“center”
CataractNNC02121,338 hectares (299,830 acres)
Walcha Plateaualign=“center”
align=right DalmortonNNC03316,458 hectares (781,980 acres)
ChaelundiNNC04188,279 hectares (465,250 acres)
YuraygirNNC0545,815 hectares (113,210 acres)
Coffs Coast and EscarpmentNNC06308,115 hectares (761,370 acres)
Macleay HastingsNNC07729,170 hectares (1,801,800 acres)
Carrai PlateauNNC0820,100 hectares (50,000 acres)
Macleay GorgesNNC09153,349 hectares (378,930 acres)
Upper ManningNNC1083,181 hectares (205,540 acres)
Comboyne PlateauNNC11123,315 hectares (304,720 acres)
Mummel EscarpmentNNC12400,916 hectares (990,690 acres)
BarringtonNNC13110,903 hectares (274,050 acres)
TomallaNNC14227,615 hectares (562,450 acres)
EllerstonNNC15113,183 hectares (279,680 acres)
Upper HunterNNC16232,750 hectares (575,100 acres)
Karuah ManningNNC17602,423 hectares (1,488,620 acres)
Rocky River GorgeNNC1886,829 hectares (214,560 acres)
Guy FawkesNNC1973,477 hectares (181,570 acres)
NSW South Western SlopesNSS8,681,126 hectares (21,451,530 acres)NSW / Vic
Inland SlopesNSS014,640,857 hectares (11,467,810 acres)
Lower SlopesNSS023,938,809 hectares (9,733,010 acres)
Capertee ValleyNSS03101,460 hectares (250,700 acres)
NullarborNUL19,722,774 hectares (48,736,040 acres)SA / WA
CarlisleNUL015,788,547 hectares (14,303,810 acres)
Nullarbor PlainNUL0212,785,260 hectares (31,593,100 acres)
YalataNUL031,148,966 hectares (2,839,160 acres)

O

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
Ord Victoria PlainOVP12,540,703 hectares (30,988,750 acres)NT / WA
PurnululuOVP013,233,873 hectares (7,991,070 acres)
South Kimberley InterzoneOVP027,728,296 hectares (19,097,040 acres)
GregoryOVP0374,982 hectares (185,280 acres)
CamfieldOVP04828,712 hectares (2,047,790 acres)

P

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
Pacific Subtropical IslandsPSI5,817 hectares (14,370 acres)
Lord Howe IslandPSI011,909 hectares (4,720 acres)
Norfolk IslandPSI023,908 hectares (9,660 acres)
Pine CreekPCK2,851,777 hectares (7,046,890 acres)NT
Pine CreekPCK01
PilbaraPIL17,823,126 hectares (44,041,900 acres)WA
ChichesterPIL018,374,728 hectares (20,694,400 acres)
FortescuePIL021,951,435 hectares (4,822,100 acres)
HamersleyPIL035,634,727 hectares (13,923,710 acres)
RoebournePIL041,862,236 hectares (4,601,690 acres)

R

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
RiverinaRIV9,704,469 hectares (23,980,270 acres)NSW, SA, Vic
LachlanRIV012,377,523 hectares (5,874,990 acres)
MurrumbidgeeRIV022,946,813 hectares (7,281,730 acres)
Murray FansRIV031,952,238 hectares (4,824,090 acres)
Victorian RiverinaRIV041,890,627 hectares (4,671,840 acres)
Robinvale PlainsRIV05162,003 hectares (400,320 acres)
Murray Scroll BeltRIV06375,266 hectares (927,300 acres)

S

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
Simpson Strzelecki DunefieldsSSD27,984,283 hectares (69,150,670 acres)NSW, NT, Qld, SA
AndadoSSD011,355,195 hectares (3,348,760 acres)
Simpson DesertSSD0212,962,073 hectares (32,029,980 acres)
DieriSSD035,152,029 hectares (12,730,940 acres)
WarrinerSSD041,032,165 hectares (2,550,540 acres)
Strzelecki DesertSSD057,482,821 hectares (18,490,450 acres)
South East Coastal PlainSCP1,749,237 hectares (4,322,460 acres)Vic
Gippsland PlainSCP011,246,995 hectares (3,081,390 acres)
Otway PlainSCP02237,799 hectares (587,610 acres)
Warrnambool PlainSCP03264,443 hectares (653,450 acres)
South East CornerSEC2,532,053 hectares (6,256,840 acres)NSW / Vic
East Gippsland LowlandsSEC01623,515 hectares (1,540,740 acres)
South East Coastal RangesSEC021,734,517 hectares (4,286,080 acres)
BatemanSEC03174,020 hectares (430,000 acres)
South Eastern HighlandsSEH8,375,961 hectares (20,697,450 acres)ACT, NSW, Vic
Highlands-Southern FallSEH011,196,334 hectares (2,956,210 acres)
Highlands-Northern FallSEH021,415,806 hectares (3,498,530 acres)
Otway RangesSEH03149,857 hectares (370,300 acres)
Strzelecki RangesSEH04342,045 hectares (845,210 acres)
MurrumbatemanSEH06630,454 hectares (1,557,890 acres)
BungoniaSEH07431,185 hectares (1,065,480 acres)
KanangraSEH08131,310 hectares (324,500 acres)
CrookwellSEH09466,523 hectares (1,152,800 acres)
OberonSEH10293,164 hectares (724,420 acres)
BathurstSEH11161,486 hectares (399,040 acres)
OrangeSEH12284,172 hectares (702,200 acres)
Hill EndSEH13504,377 hectares (1,246,340 acres)
BondoSEH14541,990 hectares (1,339,300 acres)
Kybeyan-GourockSEH15479,221 hectares (1,184,180 acres)
MonaroSEH161,267,543 hectares (3,132,170 acres)
Capertee UplandsSEH1780,494 hectares (198,910 acres)
South East QueenslandSEQ7,804,921 hectares (19,286,380 acres)NSW / Qld
Burnett-Curtis Hills and RangesSEQ01962,583 hectares (2,378,590 acres)
Moreton BasinSEQ02784,969 hectares (1,939,700 acres)
Burringbar-Conondale RangesSEQ03630,616 hectares (1,558,290 acres)
Sunshine Coast-Gold Coast LowlandsSEQ04351,123 hectares (867,640 acres)
Brisbane-Barambah VolcanicsSEQ05806,778 hectares (1,993,590 acres)
South BurnettSEQ06563,866 hectares (1,393,340 acres)
Gympie BlockSEQ07859,020 hectares (2,122,700 acres)
Burnett-Curtis Coastal LowlandsSEQ08700,181 hectares (1,730,180 acres)
Great SandySEQ09356,502 hectares (880,940 acres)
Scenic RimSEQ10614,729 hectares (1,519,030 acres)
WoodenbongSEQ11325,603 hectares (804,580 acres)
Clarence SandstonesSEQ12327,829 hectares (810,080 acres)
Clarence LowlandsSEQ13520,901 hectares (1,287,170 acres)
Southern Volcanic PlainSVP2,440,340 hectares (6,030,200 acres)SA / Vic
Victorian Volcanic PlainSVP012,356,147 hectares (5,822,170 acres)
Mount GambierSVP0284,194 hectares (208,050 acres)
Stony PlainsSTP13,166,372 hectares (32,534,810 acres)SA
BreakawaysSTP012,444,385 hectares (6,040,210 acres)
OodnadattaSTP022,593,717 hectares (6,409,210 acres)
MurnpeowieSTP032,910,385 hectares (7,191,720 acres)
Peake-Dennison InlierSTP04158,623 hectares (391,970 acres)
MacumbaSTP05693,282 hectares (1,713,140 acres)
WitjiraSTP061,677,111 hectares (4,144,230 acres)
BaltanaSTP072,688,870 hectares (6,644,300 acres)
Sturt PlateauSTU9,857,531 hectares (24,358,490 acres)NT
RenehanSTU011,938,959 hectares (4,791,270 acres)
NewcastleSTU024,333,836 hectares (10,709,140 acres)
BirdumSTU033,584,736 hectares (8,858,080 acres)
Subantarctic IslandsSAI49,164 hectares (121,490 acres)NSW / Vic
Heard and McDonald IslandsSAI0136,764 hectares (90,850 acres)
Macquarie IslandSAI0212,400 hectares (31,000 acres)
Swan Coastal PlainSWA1,525,798 hectares (3,770,330 acres)WA
Dandarragan PlateauSWA01383,465 hectares (947,560 acres)
PerthSWA021,142,334 hectares (2,822,770 acres)
Sydney BasinSYB3,629,597 hectares (8,968,930 acres)NSW
KerrabeeSYB01437,384 hectares (1,080,800 acres)
HunterSYB02461,515 hectares (1,140,430 acres)
WollemiSYB04687,622 hectares (1,699,150 acres)
YengoSYB05461,327 hectares (1,139,960 acres)
WyongSYB06211,494 hectares (522,610 acres)
PittwaterSYB07148,389 hectares (366,680 acres)
CumberlandSYB08275,693 hectares (681,250 acres)
BurragorangSYB09257,572 hectares (636,470 acres)
Sydney CataractSYB10153,839 hectares (380,140 acres)
Moss ValeSYB1196,903 hectares (239,450 acres)
IllawarraSYB12122,752 hectares (303,330 acres)
EttremaSYB13179,126 hectares (442,630 acres)
JervisSYB14135,981 hectares (336,020 acres)

T

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
TanamiTAN25,997,277 hectares (64,240,670 acres)NT / WA
Tanami DesertTAN0120,769,151 hectares (51,321,690 acres)
WycliffeTAN021,600,893 hectares (3,955,890 acres)
SandoverTAN033,627,233 hectares (8,963,090 acres)
Tasmanian Central HighlandsTCH767,849 hectares (1,897,400 acres)Tas
Central HighlandsTCH01
Tasmanian Northern MidlandsTNM415,445 hectares (1,026,590 acres)Tas
Northern MidlandsTNM01
Tasmanian Northern SlopesTNS623,103 hectares (1,539,720 acres)Tas
Northern SlopesTNS01
Tasmanian South EastTSE1,131,822 hectares (2,796,790 acres)Tas
South EastTSE01
Tasmanian Southern RangesTSR757,228 hectares (1,871,150 acres)Tas
Southern RangesTSR01
Tasmanian WestTWE1,565,077 hectares (3,867,390 acres)Tas
WestTWE01
Tiwi CobourgTIW1,010,580 hectares (2,497,200 acres)NT
TiwiTIW01748,927 hectares (1,850,640 acres)
CoburgTIW02261,652 hectares (646,560 acres)

V

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
Victoria BonaparteVIB7,301,242 hectares (18,041,760 acres)NT / WA
KeepVIB016,441,592 hectares (15,917,520 acres)
Hermit CreekVIB02170,646 hectares (421,680 acres)
AngalarriVIB03689,004 hectares (1,702,570 acres)
Victorian MidlandsVIM3,469,789 hectares (8,574,040 acres)Vic
GoldfieldsVIM011,326,133 hectares (3,276,950 acres)
Central Victorian UplandsVIM021,217,922 hectares (3,009,550 acres)
Greater GrampiansVIM03237,416 hectares (586,670 acres)
Dundas TablelandsVIM04688,318 hectares (1,700,870 acres)

W

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
WarrenWAR844,771 hectares (2,087,470 acres)WA
WarrenWAR01
Wet TropicsWET1,989,107 hectares (4,915,190 acres)Qld
HerbertWET01220,920 hectares (545,900 acres)
TullyWET02162,958 hectares (402,680 acres)
InnisfailWET03195,200 hectares (482,000 acres)
AthertonWET04177,037 hectares (437,470 acres)
Paluma-SeaviewWET05233,751 hectares (577,610 acres)
Kirrama-HinchinbrookWET06257,594 hectares (636,530 acres)
Bellenden Ker-LambWET07271,062 hectares (669,810 acres)
MacalisterWET08112,652 hectares (278,370 acres)
Daintree-BloomfieldWET09357,932 hectares (884,470 acres)

Y

IBRA regions and subregions: IBRA7
IBRA region / subregionIBRA codeAreaStatesLocation in Australia
YalgooYAL5,087,577 hectares (12,571,680 acres)WA
EdelYAL011,588,634 hectares (3,925,600 acres)
TalleringYAL023,498,943 hectares (8,646,080 acres)

See also

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


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