Development of an integrated long-term mangrove monitoring program for Darwin Harbour. Sub-project A: Mangrove community mapping: Charles Point to Gunn Point 2016
Sub-project A: Mangrove community mapping: Charles Point to Gunn Point 2016
Brocklehurst, P; Edmeades, B; Northern Territory. Department of Environment and Natural Resources. Rangelands Division
E-Publications; E-Books; PublicationNT; DENR Technical Report 19/2018
Darwin Harbour; Shoal Bay
This report describes the updated mangrove communities for the approximately 32,000 ha of mangroves and salt flats that line the foreshores of Darwin Harbour, Shoal Bay and areas south of Charles Point and Gunn Point. Results indicate that there has not been any significant, discernible or substantive changes in mangrove forest composition in Darwin Harbour between 1996 and 2016.
Made available via the Publications (Legal Deposit) Act 2004 (NT)
1. Introduction; 2. Objectives; 3. Methods; 4. Results and discussion; 5. Conclusion; 6. Recommendations; 7. Bibliography; 8. Appendix.
Mangroves; Mangrove community mapping; Map unit; Vegetation mapping
Northern Territory Government
DENR Technical Report 19/2018
x 77 pages; colour illustrations and maps; x 30 cm
Attribution International 4.0 (CC BY 4.0)
Northern Territory Government
Mangrove Monitoring Project: Sub-project A 62 188.8.131.52 Salt flats and Samphire This is the second most extensive community and is found at higher tidal levels where conditions get hypersaline. Found throughout the region. Vegetation usually sparse or absent. However these areas play an important role in mangrove ecosystem functioning. Total Area: 4,928 ha Percentage of Mangroves: 15.6% Map Unit 9a Salt flats (+/- samphire) The salt flats are usually devoid of vegetation, but may contain low growing plants comprised of sedges, grasses and samphires, depending on position and saltwater/freshwater influences. Grasses and sedges, including Sporobolus virginicus, Xerochloa imberbis and Fimbristylis ferruginea, generally occur on the higher landward edges of the salt flats or those areas which may be inundated periodically with freshwater. Samphire species occur on the more saline regions and include Halosarcia indica, Halosarcia halocnemoides and Tecticornia australasica. Low shrubs and sub-shrubs may include Batis argillicola and Suaeda arbusculoides. Scattered colonising or stunted forms of Avicennia marina and Lumnitzera racemosa are also common on the salt flats. Trees occurring towards the landward edge include Thespesia populneoides and Melaleuca viridiflora. Geomorphic Unit: High Tidal Flat Tidal Level: Mean High Water Neap to Mean High Water Spring Area: 4,864 ha (15.3%) Table 27. Map unit 9a structural formation and stand information Strata Life Form Median Cover (%cc) Median PFC (%) Median Canopy Height (m) Upper - 1 (1 - 1) 3 (3 - 3) Mid tree 3 (0 - 6) 0.7 (0 - 1.3) Lower grass 50 (40 - 60) 0 (0 - 0) 0.2 (0.2 - 0.2)