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Table 15: Key to Major Vegetation Subgroups in MVG15: Low Closed Forests and Tall Closed Shrublands (NVIS Version 4.1)



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Table 15: Key to Major Vegetation Subgroups in MVG15: Low Closed Forests and Tall Closed Shrublands (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Dense canopy of low trees or tall shrubs including species of Casuarina, Agonis, Melaleuca, Banksia or Acacia. Typically coastal littoral situations. Vegetation fits description of the Major Vegetation Group 15 “Low Closed Forests and Tall Closed Shrublands”




MVS28

Littoral scrubs

Currently a single subgroup but tropical, southeast temperate and southwest temperate assemblages may warrant segregation.



Table 16: Key to Major Vegetation Subgroups in MVG16: Acacia Shrublands (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Occurs on stony plains and uplands. Primary dominant is Acacia aneura sens. lat., with co-occurring woody species less abundant and usually shorter in stature. Other widespread Acacia species include A. victoriae, A. tetragonophylla, A. estrophiolata Acacia grasbyi, A. quadrimarginea, and A. xiphophylla. Understorey cover is variable, usually dominated by tussock grasses. Hummock grasses may be present but not often dominant.




  • Occurs on sand plains. Overstorey dominated by Acacia, often with two or more species co-occurring. Acacia aneura sens. lat., may be present but not often as the primary dominant. Other widespread Acacia species include A. calcicola, A. ligulata, A. kempeana, A. murrayana, A. ramulosa and A. tetragonophylla. Understorey usually dominated by hummock grasses, particualrly Triodia basedowii.




MVS20

MVS23


Stony mulga woodlands and shrublands

Sandplain Acacia woodlands and shrublands



NSW, QLD, NT, SA, WA

NSW, QLD, NT, SA, WA




Table 17: Key to Major Vegetation Subgroups in MVG17: Other Shrublands (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Plant community dominated by shrubs of the genus Duma (lignum, formerly Muehlenbeckia)


  • Plant community not dominated by lignum

MVS57

1


Lignum shrublands and wetlands

Note that many lignum communities may key out elsewhere under a dominant tree genus
A large and diverse subgroup, warranting rationalisation

1

  • Plant community dominated by shrubs of one or more Melaleuca spp.




  • Plant community not dominated by Melaleuca spp. shrubs

MVS49

2


Melaleuca shrublands and open shrublands
Other sparse shrublands and sparse heathlands




2

  • Plant community dominated shrubs with crown cover of 20 to 80% (FPC 10 to 70%; NVIS cover_code=c, i)




  • Plant community dominated shrubs with crown cover of <20% (FPC <10%; NVIS cover_code=r)

MVS32

MVS80


Other shrublands

Sparse shrublands



Note: Denser shrublands MVS 30 and MVS 28 re-assigned to MVG18 and MVG15, respectively



Table 18: Key to Major Vegetation Subgroups in MVG18: Heathlands (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Distributed on rocky substrates in NT and WA north of latitude 17°S. Common genera include Acacia, Asteromyrtus, Calytrix, Thryptomene, Grevillea, Hibbertia, Jacksonia, Boronia, Pityrodia, Fimbristylis, Triodia, Micraria and Eriachne.




  • Distributed south of 17°S or, if north of 17°S, then not in NT or WA.




MVS##

1



Tropical heathlands

NT, WA.

The four subgroups are geographically disjunct and have highly distinctive floras with few species in common. Similarity of vegetation structure and life-form composition, and high beta diversity (species turnover) make geographic and environmental variables the best diagnostic characters for subgroup identification. Common genera are listed.




1

  • Distributed in WA, mostly well south of 25°S. Common general include Banksia, Conospermum, Hakea, Petrophile, Calothamnus, Eremaea, Melaleuca, Verticordia, Acacia, Daviesia, Gompholobium, Astroloma, Leucopogon, Lysinema, Boronia, Stylidium, Thysanotus, Anigozanthos, Xanthorrhoea, Mesomelaena, Schoenus, Desmocladus and Lyginia. Mallee growth forms of Eucalyptus may be present.




  • Not distributed in WA

MVS30

2


Southwest Heathlands



WA


2

  • Shrub canopy rarely growing taller than 1 metre, distributed in cold climates with snow for several weeks of the year at elevations greater than 1600 m on the Great Dividing Range south of Canberra (35°S) or greater than 1000 m on the Tasmanian highlands. Common genera include Grevillea, Orites, Kunzea, Epacris, Leucopogon, Richea, Nematolepis, Prostanthera, Bossiaea, Oxylobium, Baeckea, Podocarpus, Olearia, Ozothamnus, Astelia, Carex, Oreobolus, Schoenus, Poa, Athrotaxis, Microcachrys, Bellendena and in bolster heaths, Abrotnella, Colobanthus, Donatia, Phyllachne and Schizacme.




  • Occurring at lower elevations than above, rarely experiencing persistent snow. Distributed widely on coastal and hinterland of Qld, NSW, Vic, SA and Tas. Common genera include Allocasuarina, Banksia, Hakea, Leptospermum, Phyllota, Hibbertia, Hypolaena, Caustis, Lepidosperma, Schoenus, Acacia, Dillwynia,, Pultenaea, Epacris, Leucopogon, Xanthorrhoea and Lomandra. Mallee growth forms of Eucalyptus may be present.




MVS##

MVS##


Montane and alpine heathlands

Eastern heathlands



NSW, VIC, TAS

QLD, NSW, ACT, VIC, SA, TAS




Table 19: Key to Major Vegetation Subgroups in MVG19: Tussock Grasslands (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Grasslands dominated by the genus Astrebla (Mitchell grass) and other C4 grasses or sometimes with Dichanthium (Blue grasses) and/or Chrysopogon (beard grasses) more abundant. C3 grasses absent. Mostly north of 30°S.




  • Grasslands not dominated by Astrebla, Dichanthium or Chrysopogon, usually with at least some C3 grass genera and south of 29°S except in far SE Qld and NE NSW.




MVS34

1


Tropical arid grasslands

QLD, NT, WA, northwest NSW

2

  • Grasslands composed entirely of C3 grasses (C4 grasses absent) and forbs (sometimes dominating tussocks). Dominated by Poa, usually with Agrostis, Deyeuxia or Rytidosperma. Alpine areas where snow persists for at least several weeks.




  • Grasslands typically with a mixture of C3 and C4 grasses, tussocks dominating forbs. Common genera include Austrostipa, Bothriochloa, Chloris, Poa, Rytidosperma and Themeda. In temperate to semi-arid environments rarely receiving snow.




MVS##

MVS36



Alpine grasslands and herbfields
Temperate tussock grasslands

NSW, VIC, TAS

QLD, NSW, ACT, VIC, TAS




Table 20: Key to Major Vegetation Subgroups in MVG20: Hummock Grasslands (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Dominated by grasses of the genus Triodia forming distinct hummocks, sometimes with Zygochloa species and ephemeral forbs and grasses. Woody species may be present, but at very low densities. Widespread in arid regions.




MVS33

Hummock grasslands

Different species of Triodia dominate plant communities in different regions, some of which may warrant subgroup status.



Table 21: Key to Major Vegetation Subgroups in MVG21: Other Grasslands, Herblands, Sedgelands and Rushlands (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Associated with coastal floodplains or estuaries.




  • Not associated with coastal floodplains or estuaries.




1

2








1

  • Dominated by erect sedges, rushes or reed-like grasses and inundated regularly by brackish or subsaline tidal water or groundwater.




  • Characterised by mosaics of mat-forming grasses or sedges, patches of erect sedges and open water with floating and submerged forbs. Inundated by freshwater with no tidal influence.




MVS41

MVS63




Brackish reedlands and sedgelands

Coastal floodplain meadows and lagoons




NSW, NT, QLD, SA, TAS, VIC, WA

NSW, NT, QLD, SA, TAS, VIC, WA



2

  • Associated with periodically inundated floodplains of major inland rivers, sometimes dry for extended periods. Characterised by mosaics of mat-forming grasses or sedges, patches of erect sedges or reeds, and open water with floating and submerged forbs.




  • Not associated with riverine floodplains, but typically associated with slow-draining headwater valleys accumulating peaty soils. Vegetation dominated by dense stratum of sedges (species of Baumea, Carex, Lepidosperma, Schoenus and Gymnoschoenus), usually with shrubs of Myrtaceae and other families.




MVS##

MVS38



Inland wetland complex

Mires


NSW, NT, QLD, SA, VIC, WA

ACT, NSW, QLD, SA, TAS, VIC, WA





Table 22: Key to Major Vegetation Subgroups in MVG22: Chenopod Shrublands, Samphire Shrublands and Forblands (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Ground stratum (or strata) dominated by non-succulent shrubby saltbushes (Atriplex spp.) and/or bluebushes (Maireana spp.)




  • Ground stratum dominated by succulent shrubs and/or forbs of families Chenopodiaceae and/or Aizoaceae.




1

3








1

  • Shrub layer typically sparse (<20% canopy cover) and low (<0.5 m), interspersed with tussock grasses. Commonly dominated by species of Atriplex, Sclerolaena, Aristida, Astrebla and Eragrostis. Occurs on arid stony uplands and gibber plains.




  • Shrub layer taller and denser than above. Dominated by species of Atriplex, Maireana or, in disturbed locations, Sclerolaena. Occurs on clay plains or sandplains.




MVS##

2


Gibber chenopod shrublands


NSW, NT, QLD, SA, WA

2

  • Occurs on red sandplains soils with calcrete subsoil. Dominated by species of Maireana, notably M. sedifolia and/or M. pyramidata.

.

  • Occurs on clay plains or depressions of alluvial or limestone origin. Dominated by species of Atriplex, Maireana aphylla, Nitraria billardieri.

MVS31

MVS##


Sandplain bluebush shrublands

Clay plains saltbush shrublands




NSW, NT, QLD, SA, VIC, WA

NSW, NT, QLD, SA, VIC, WA Communities intermediate between Sandplain bluebush shrublands and Clay plains saltbush shrublands may exist




3

  • Occasionally or regularly inundated by tidal waters in the coastal zone. Dominated by Sarcocornia quinquefaria, with Samolus, Suaeda, Selliera, Tecticornia and Triglochin Juncus Baumea, Sporobolus and/or Zoysia.




  • Never inundated by tidal waters, instead associated with inland salt lakes and plains. Dominated by species of Tecticornia and Sarcocornia.



MVS39

MVS##


Coastal saltmarshes

Salt lake samphires



NSW, NT, QLD, SA, VIC, WA, TAS
NSW, NT, QLD, SA, VIC, WA



Table 23: Key to Major Vegetation Subgroups in MVG23: Mangroves (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Woody plants growing in the intertidal zone.

MVS40

Mangroves

Two subgroups warrant consideration: i) Tropical and subtropical mangroves, occurring north from c. 30°S and characterised by multi-species assemblages at estuary scale, including Rhizophoraceae, Sonnerataceae and other taxa including those below; and ii) Temperate mangroves occurring south from c. 30°S and characterised by Avicennia marina, with or without Aegiceras corniculata.




Table 24: Key to Major Vegetation Subgroups in MVG24: Inland aquatic – freshwater, salt lakes, lagoons (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Salt lakes and saltwater lagoons




  • Freshwater lakes, dams, streams, lagoons or aquatic plants

MVS43
MVS44

Salt lakes and lagoons
Freshwater, dams, lakes, lagoons or aquatic plants






Table 25: Key to Major Vegetation Subgroups in MVG25: Cleared, non-native vegetation, buildings (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Native vegetation has been cleared

MVS98

Cleared, non-native vegetation, buildings

No need, at this stage, to key this beyond MVS98.



Table 26: Key to Major Vegetation Subgroups in MVG26: Unclassified native vegetation (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Known to be native vegetation, but no other details are available

MVS97

Unclassified native vegetation

No need, at this stage, to key this beyond MVS97.



Table 27: Key to Major Vegetation Subgroups in MVG27: Naturally bare – sand, rock, claypan, mudflat (NVIS Version 4.1)


Key No.

Criteria

MVS# or Next Key No.

Broader groupings or MVS Name

Comments

0

  • Naturally bare areas, perhaps with very sparse or isolated plants (NVIS cover_code=bc,bi)

MVS42

Naturally bare, sand, rock, claypan, mudflat

No need, at this stage, to key this beyond MVS42.


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