The land resources of Cobourg Peninsula
by B. Wood and D. Sivertsen
Wood, B.; Sivertsen, D.; Conservation Commission of the Northern Territory
E-Publications; E-Books; PublicationNT
Made available via the Publications (Legal Deposit) Act 2004 (NT).; This report describes a land system survey over the Cobourg Peninsula broadly describing landform, soils and vegetation to assist the effective planning and management of the area as a National Park.
1. Introduction -- 2. Summary Descriptions -- 3. Land Systems -- 4. Soils -- 5. Vegetation -- Appendices -- Acknowledgements.
Land use -- Northern Territory -- Cobourg Peninsula; Vegetation mapping -- Northern Territory -- Cobourg Peninsula
Conservation Commission of the Northern Territory
iv, 80,  p. : col. ills. ; 30 cm.
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restricted to the eastern lowlands and western lowlands respectively. Soils of the coastal margins: These soils include the saline clays (Solonchaks) and saline muds of the estua~ine areas and calcereous sands of the beaches and sand plains. Much of the area of clays and muds is submerged at high tides. The calcareous sands can be subdivided into sands of the active fore dunes which are relatively unstable and the stable sands of the rear pl ai ns and rel ict beach ri9ges. Cemented shell grit was present throughout these soils. 2.3 Vegetation Summary The vegetation of Cobourg Peninsula is dominated by eucalypt open forest and wood 1 and communit i es wh ich are characteri sed by Euca7y,ptus miniata, Euca7yptus nesophi7a and Euca7yptus tetro donta. Such communities cover most of the Penins~la and are particularly characteristic of the plateau surface. Where these communities occur on the deeper red and yellow earths they typic~ ally contain an understorey of kentia palm (Gronophy77um ramsayi) , an important,specie~ considered to be restricted and vulnerable (Leigh et. ale 1981). Streamlines, wetlands and seepage areas are characterised by str~cturall y vari abl e Me7 a7 euca viridifl ora dominated commun ities. Streaml ines and permanent seepage areas generall y support Tall to Mid-High Woodlands whil st interJllittent wetlands tend to support Mid-High and Low Open Wood lands. Al so conta ined in the former are significant areas of sedgelan~d and shrubland forming an intricate mosaic with the main community. These complexes have not been well investigated botanically to dat~ and may contain a number of previously undescribed or rare species. The coastal bauxitic capping on the northern side of the Peninsula supports stands of closed monsoon forest. This community type is relatively rare in the regional context thus making the - 7
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