Remnant vegetation survey : Darwin to Palmerston region : a report to Greening Australia N.T.
Brock, John 1951-
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Made available via the Publications (Legal Deposit) Act 2004 (NT).; Remnant vegetation is defined as an area of land which contains native vegetation in a natural state. Much remnant vegetation has been lost or seriously degraded as a result of urban expansion, clearing and development. Poor land management practices have also contributed to long term deterioration of native bushland. Factors causing negative impact include uncontrolled fires, weed intrusion, stormwater runoff, unformed tracks with subsequent erosion, and indiscriminate dumping of household and industrial waste. The main aim of this survey was to identify, describe and map areas of native remnant vegetation and to both determine and graphically represent their significance.
Vegetation surveys -- Northern Territory -- Darwin Region; Plants -- Northern Territory -- Darwin Region; Vegetation, Remnant
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~ , * 6.13. , Monsoon rainforest (site I, community I). The largest wet rainforest patch of its kind in the Darwin area, sustained by spring fed Palm Creek which drains into the Leanyer Swamp flats. An outstanding jungle dominated by evergreen species including Syzygium nervosum, Galophyllum soulattriand Horsfieldia australiana, with large populations of Carpentaria aouminata and Livistona benthamii. Ferns dominate the ground layer, with such species as Stenochlaena palustris and Piper novae-ho/landiae. Canopy cover and ground leaf litter cover are both very dense (90100%), and combined with flowing water create a lush fertile environment. Fire intrusion was evident in localised but intense occurrences, resulting in occasional tree' death. Intense late dry season fires fuelled by dense grassy swathes on the margins were encroaching inside the rainforest boundaries. 6.13.2 The western slopes of the Park are predominantly covered with eucalypt woodland (community 15), while denser open forest'(community 13) forms. along the upper slopes. At site 8, located on a gravelly slope, a particularly good population of E, tetrodonta open forest was recorded, and though. regular fire effects retarded most woody regeneration to heights'less than 2m, a total of 35 species was recorded on the ground layer. 6.13.3 Mission Grass is a common dominant or co-dominant component in much of the drainage and seepage areas in the Park, and provides abundant fuel mass in the event of late dry season fires. Control of this weed is of high priority in overall fire management of the Reserve. A severe infestation of Senna alata (Candle Bush) was located along a stormwater drain on the western boundary of the Park, presenting a potential threat to downstream vegetation, Park management was notified and the site was inspected. 6.13.4 Drainage lines to the west of the rainforest support Lophostemon communities, amongst which several species allied to rainforest communities are found in the understorey. 6.13.5 The eastern lower slopes and depressions, commonly with seasonalIy waterlogged soils, are covered with a tract of mixed Pandanus woodland, with Grevillea prerididolia and a dense 'grass/sedge ground layer. The source and upper reaches of Palm Ck. , mostly outside and south of the Park, are lined with Pandanus spiralis forest and woodland. , 40