Description

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This layer contains information on the distribution of alpine sphagnum bogs and associated fens as defined under the Commonwealth Environment Protection and Biodiversity Conservation (EPBC) Act. The dataset includes areas of RAMSAR significance. The mountains of the Australian Capital Territory support substantial areas of peat-forming mires in interfluves and valley heads, as well as areas of riparian fen vegetation along streams. They include valley fill deposits with sedge fens at lower altitudes (800–1200 m), and shrubby subalpine bogs and restionaceous fens which sometimes include the hummock moss Sphagnum cristatum. There are several minor wetland vegetation types including aquatic communities, Leptospermum tall shrubland and Poa wet tussock grasslands but these are generally not peat-forming. While similar fens and bogs occur in the Snowy Mountains, the ACT represents a significant outlier of major biogeographic significance because the mires are near their climatic limits and hence sensitive to climate change.Mapping of the mires was developed in three stages using orthorectified aerial photography and satellite imagery and extensive field checking. More information can be found at: http://www.environment.act.gov.au/__data/assets/pdf_file/0008/576818/The_Peat-Forming_Mires_of_the_Australian_Capital_Territory_screen.pdf Updates: The dataset is now static, but can be updated as required if new or better mapping of bog and fen areas become available. Majority of the mapping was completed post 2003 fires.Fit for purpose:This dataset was captured at 1:3000 scale. This dataset is fit for use as a tool for showing presence of bogs and fens in the ACT. Exact boundaries and extents will contract and expand throughout time. This should be considered if data use purpose requires accuracy of greater than 50m. The mapping was originally mapped in ‘AGD 1966 AMG Zone 55’ coordinate system and has since been converted to GDA1994 MGA Zone 55. Creative Common By Attribution 4.0 (Australian Capital Territory), Please read Data Terms and Conditions statement before  data use.

Dataset Attributes

  • OBJECTID
    Number
  • SHAPE
    Number
  • OBJECTID
    Number
  • ID
    Number
  • SWAMP_NAME
    Text
    {"value"=>"Cheyenne", "count"=>171} (), {"value"=>"Ginini (west)", "count"=>114} (), {"value"=>"Snowy Flat", "count"=>81} (), {"value"=>"Ginini (east)", "count"=>66} (), {"value"=>"Rotten_Swamp", "count"=>51} (), {"value"=>"Stockyard", "count"=>43} (), {"value"=>"Cotter source", "count"=>32} (), {"value"=>"Cotter_upper", "count"=>30} (), {"value"=>"Licking Hole", "count"=>26} (), {"value"=>"Cotter_at_Bimberi", "count"=>20} ()
  • DATASET
    Text
    {"value"=>"ACT_Aquatic_Bogs_and_Fens", "count"=>834} ()
  • VEGDESCRIPTION
    Text
    {"value"=>"High Altitude Sphagnum Bog", "count"=>572} (), {"value"=>"Empodisma Fen", "count"=>193} (), {"value"=>"Carex Fen", "count"=>53} (), {"value"=>"Medium Altitude Sphagnum Bog", "count"=>16} ()
  • SHAPE_Length
    Number
  • SHAPE_Area
    Number

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