Territory Stories

The land resources of Cobourg Peninsula



The land resources of Cobourg Peninsula

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by B. Wood and D. Sivertsen


Wood, B.; Sivertsen, D.; Conservation Commission of the Northern Territory


E-Publications; E-Books; PublicationNT




Cobourg Peninsula


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.



Table of contents

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

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Conservation Commission of the Northern Territory

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iv, 80, [6] p. : col. ills. ; 30 cm.

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http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=2DBCB77120E006B6E040CD9B0F274EFE; http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=2DBCB77120E006B6E040CD9B0F274EFE [NTLIS Metadata Tool]

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and kaolinized Upper Cretaceous sediments. The associ ated land~orms are gently undulating plains with slopes up to 2%. The c~mmun ity is typical of Ramsay and Caiman land systems'oand to a lesser extent Scarp and Wangal uland systems. The conservation val ue of this assoc iation is high for a number of reasons: it is the most typical' of the eucal ypt assoc iations occurring on Cobourg Peninsoula and therefore rates highly for representativeness, and it al so contains extensive stands of Kentia palm (Gr:onophy77um ramsayi) and Mel ville Island bloodwood (E. nesophila) neither of which have been protected in a national park to date. Eucal J;ptus . tetrodonta 0 Eucalyptus nesophil a wood lands. (Map Unit 2 - 515.1 km2) Where low ridges occur on the pl ateau surfac e, usually with lithosols a_nd a fewshallow gravelly red earths as the substrates, the composition of ~he above community changed in that species such as E .. miniata and GronophyJ'um ramsa.>:i were absent leaving< E. tetrodonta and E. nesophila, occaosionally with E. bleeseri, dominating the !lPper stratum. A well developed second ary tree layer, again fOTmed of smaller specimens of the upper. stratum species, is ~resJent at most sites and forms a spar se to mid-den se .1 ayer. The shrub 1 ayer in this community is .. either very sparse or occurs as iso lated jndividuals, the most common being Livistona hum!' is, Buchanania obovata and several Acacia spec ies. Ground cover tends to be patchy; being sparsest where there is a high porportion of surface rock and denses! on the shallow earths under breaks in the upper canopy. The ground _cover species are mainly grasses with scattered herbs,. creepers and low shrubs. The most commonly occurring species are Chrysopogon lati folius, Heteropogo~ triticeus and Cymbopogon bombycinus among the grasses, with Hovea longifo7fa (a creeper) and Gossypium cunninghammi (a low shrub) .. This community occurs as a major component of both Ca iman and Irgul 1 and systems and as a minor component - 32