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Regional ecosystem details for 11.1.2

Regional ecosystem 11.1.2
Vegetation Management Act class Least concern
Wetlands Estuarine wetlands (e.g. mangroves).
Biodiversity status No concern at present
Subregion 14, 1, (2), (8.3), (8.5)
Estimated extent1 Pre-clearing 114000 ha; Remnant 2015 104000 ha
Extent in reserves High
Short description Samphire forbland on marine clay plains
Structure category Very sparse
Description Samphire forbland or bare mud-flats on Quaternary estuarine deposits. Mainly saltpans and mudflats with clumps of saltbush including one or several of the following species; Tecticornia spp. (e.g. Tecticornia indica subsp. julacea, Tecticornia indica subsp. leiostachya), Sesuvium portulacastrum, Sarcocornia quinqueflora subsp. quinqueflora, Suaeda australis, S. arbusculoides, Tecticornia australasica, Salsola australis, algal crusts and the grass Sporobolus virginicus. Sedges are also common. Occurs on supratidal flats with deep saline clay soils and formed from Quaternary estuarine sediments. Occurs along the landward edge of the intertidal zone in a hypersaline environment that is only inundated by the highest spring tides. Soils are grey mottled clays with a crusting surface, and are highly saline. (BVG1M: 35b)

Vegetation communities in this regional ecosystem include:
11.1.2a: Bare mud flats on Quaternary estuarine deposits, with very isolated individual stunted mangroves such as Avicennia marina and/or Ceriops australis. May have obvious salt crusts on the soil surface. Estuarine wetlands (e.g. mangroves). (BVG1M: 35b)
11.1.2b: Samphire forbland on Quaternary estuarine deposits. Mainly saltpans and mudflats with clumps of saltbush including one or several of the following species; Tecticornia spp. (e.g. Tecticornia indica subsp. julacea, Tecticornia indica subsp. leiostachya), Sesuvium portulacastrum, Sarcocornia quinqueflora subsp. quinqueflora, Suaeda australis, S. arbusculoides, Tecticornia australasica, Scleria ciliaris, Marsilea mutica, Salsola australis, algal crusts and the grass Sporobolus virginicus. Sedges may be common. Estuarine wetlands (e.g. mangroves). (BVG1M: 35b)
Supplementary description Christian et al. (1953), Littoral; Forster and Barton (1995), Carpentaria; Speck et al. (1968), Carpentaria (3,4); Bruinsma (2000); Byron and Hall (1998); Danaher (1995); Gunn and Nix (1977) LU 140
Protected areas Bowling Green Bay NP, Bowling Green Bay CP, Townsville Town Common CP, Wongaloo CP, MacKenzie Island CP, Cape Upstart NP, Broad Sound Islands NP, Shoalwater Bay CP, Newport CP, Charon Point CP, Keppel Sands CP, Rundle Range NP, Causeway Lake CP, Abbott Bay RR, Magnetic Island NP
Special values Provides estuarine wetland habitat.
Fire management guidelines SEASON: Various. INTENSITY: Low. INTERVAL: Typically > every 4 years. Rubbervine or other weed control may require two fires within 2 or 3 years which should be followed by an absence of fire for > 5 years. STRATEGY: Do not actively target for burning, except for the control of rubbervine. Can tolerate being burnt when implementing fires in adjacent vegetation. ISSUES: Saltpan species, e.g. Sporobolus virginicus, Tecticornia indica and Suaeda australis can tolerate occasional fires, but do not require fire for recruitment. Tecticornia indica and Suaeda australis, should have long-term persistence. Only burn if required as part of burning adjacent vegetation or for rubbervine control.
Comments 11.1.2a: Subject to modification/conversion to salt evaporation ponds in the Fitzroy River Delta with about 3000 ha in this locality converted to this use (Bruinsma 2000). More extensive in the hypersaline marine plains around Broadsound and the Fitzroy River Delta, in the south of the BBN bioregion.

1 Estimated extent is from version 10 pre-clearing and 2015 remnant regional ecosystem mapping. Figures are rounded for simplicity. For more precise estimates, including breakdowns by tenure and other themes see remnant vegetation in Queensland.

2 Superseded: Revision of the regional ecosystem classification removed this regional ecosystem code from use in version 10 RE mapping. It is included in the regional ecosystem description database because the RE code may appear in older versions of RE mapping and regulation.

Licence
Creative Commons Attribution 4.0 International (CC BY 4.0)
Last updated
10 April 2017
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