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The vegetation of montane lagoons of the New England Tablelands Bioregion, New South Wales is examined using flexible UPGMA analysis of frequency scores on all vascular plant taxa, charophytes and one liverworts. Seven communities are described: 1. Hydrocotyle tripartita – Isotoma fluviatilis – Ranunculus inundatus – Lilaeopsis polyantha herbfield; 2. Eleocharis sphacelata – Potamogeton tricarinatus sedgeland; 3. Eleocharis sphacelata – Utricularia australis – Isolepis fluitans, herbfield; 4. Utricularia australis – Nitella sonderi herbfield; 5. Eleocharis sphacelata – Utricularia australis – Ricciocarpus natans sedgeland; 6. Carex gaudichaudiana – Holcus lanatus – Stellaria angustifolia sedgeland; 7. Cyperus sphaeroides – Eleocharis gracilis – Schoenus apogon – Carex gaudichaudiana sedgeland. 58 lagoons were located and identified, only 28% of which are considered to be intact and in good condition. Two threatened species (Aldovandra vesiculosa and Arthaxon hispidus) and three RoTAP-listed taxa were encountered during the survey.
The floristic composition and vegetation partitioning of the ephemeral wetlands of the Pilliga Outwash within the Pilliga National Park and Pilliga State Conservation Area (30˚30’S, 149˚22’E) on the North Western Plains of New South Wales are described. SPOT5 imagery was used to map 340 wetlands across the Pilliga Outwash. A total of 240 plots within 31 wetlands explored composition and species richness in relation to water depth and wetland size. The predominant community described is the species-rich herbfield of shallow basin wetlands, along with the structurally distinct but the less common sedgeland/herbfield of the deeper ‘tank’ wetlands and a single wetland with a floristically depauperate Diplachne fusca wet grassland. A total of 131 taxa were recorded including three species listed under the NSW Threatened Species Conservation Act (1995): Eriocaulon australasicum, Lepidium monoplocoides and Myriophyllum implicatum. New records for an additional six taxa were recorded for the North Western Plains. 11% of taxa were exotic in origin.
During recent surveys within north-eastern New South Wales new records of range extensions for some significant plant taxa were recorded. The implications for the conservation status of each taxon in terms of their ROTAP status (Briggs & Leigh 1996) are discussed. It is important that management decisions concerning rare taxa are made using the most up-to-date information possible, hence the need to report new distributions and suggest changes in conservation status. Vouchers of all taxa discussed have been lodged at the NCW Beadle Herbarium at the Division of Botany, University of New England and/or at the Herbarium of the North Coast Regional Botanic Garden, Coffs Harbour. In the following notes National Park is abbreviated to NP and Nature Reserve to NR.
New populations of three threatened mallee species, Eucalyptus castrensis K.D.Hill, Eucalyptus fracta K.D.Hill and Eucalyptus pumila Cambage (all Myrtaceae), have recently been found in the Singleton Military Area in the Hunter Valley of New South Wales (32°45’S, 151°15’E). Each population is significant as they increase the known distribution and total numbers of three highly restricted species. Details of the habitat and size of each additional population are given and conservation notes provided.
The vegetation of Warra National Park (29° 29’S, 151° 56’E; 2041 ha in area) and Wattleridge (29°31’S, 151°54’E; 648 ha in area), located approximately 35 km southeast of Glen Innes and 5 km west of Mount Mitchell, within the Guyra and Severn Shires in the New England Tablelands Bioregion NSW, is described. Nine vegetation communities are defined, based on flexible UPGMA analysis of cover-abundance scores of all vascular plant taxa. These communities have been mapped based on analysis of quadrat data, air photo interpretation, substrate variation and ground-truthing.
Communities described are: (1) Leptospermum novae-angliae (New England Tea-tree) – Bursaria spinosa (Blackthorn) Riparian Scrub & Heath, (2) Eucalyptus pauciflora (Snow Gum) – Eucalyptus nova-anglica (New England Peppermint) Woodland, (3) Haloragis heterophylla (Variable Raspwort) – Carex inversa (Sedge) Herbfield, (4) Baeckea omissa (Baeckea) – Leptospermum gregarium (Swamp Tea-tree) Closed Wet Heath, (5) Eucalyptus cameronii (Die-hard Stringybark) – Eucalyptus campanulata (New England Blackbutt) Shrubby Open Forest, (6) Eucalyptus radiata subsp. sejuncta (Narrow-leaved Peppermint) – Eucalyptus acaciiformis (Wattle-leaved Peppermint) Woodland, (7) Eucalyptus cameronii (Die-hard Stringybark) – Eucalyptus caliginosa (Broad-leaved Stringybark) Grassy Open Forest, (8) Eucalyptus nobilis (Manna Gum) – Eucalyptus obliqua (Messmate) Tall Open Forest, and (9) Eucalyptus obliqua (Messmate) – Eucalyptus nobilis (Manna Gum) Tall Open Forest, (10) Leptospermum novae-angliae – Kunzea obovata – Brachyloma saxicola Shrubby Open Scrub and Closed Heath.
Of 11 communities within the area, four should be considered as threatened, while 18 taxa are considered to be of conservation significance.
The vegetation of Culgoa National Park (22 986 ha in area; 29°15’ S, 147°15’ E) in the central north of New South Wales, approximately 40 km west of Goodooga and adjoining the NSW/Queensland border, is described. Six vegetation communities are delineated based on UPGMA analysis of cover-abundance scores of all vascular plant taxa. These communities are mapped based on ground truthing and air photo interpretation. All communities are simple in structure being primarily woodlands, shrublands and grasslands. Communities described are: 1) Eucalyptus coolabah Woodlands, 2) Muehlenbeckia florulenta Shrubby Thickets, 3) Eucalyptus coolabah – Acacia pendula Woodlands & Grasslands, 4) Eucalyptus largiflorens – Eucalyptus coolabah Woodlands, 5) Eucalyptus largiflorens – Alectryon oleifolius Woodlands, 6) Callitris glaucophylla – Eucalyptus populnea Woodlands and Shrublands. A total of 240 vascular plant taxa were found of which 8% were exotic in origin. Conservation issues are discussed.
Acacia blakei forests and scrubs of north-eastern NSW are described and compared to similar vegetation found in the south-east of the state, primarily dominated by Acacia silvestris. Like those in the south, Northern Wattle Dry Sclerophyll Forests form often discrete stands with abrupt margins on steep slopes in rugged terrain on shallow often rocky soils. The structure is usually of a cohort with stems of an even height and size up to 20 m tall, and a sparse understorey with few grasses, herbs or shrubs. These systems are potentially maintained by infrequent extreme fire events. Notes are made on their management and conservation.
The vegetation of Mount Canobolas State Recreation Area (1673 ha), 14 km southwest of Orange (33°21’S, 154°59’E) in the Shire of Cabonne on the Central Tablelands of New South Wales is described. A floristic survey of 50x0.04 ha plots was conducted in November 1999. Seven communities are defined based on flexible UPGMA analysis of abundance scores of vascular plant taxa. Mapping of these communities is based on ground truthing, air photo interpretation and substrate. A total of 309 taxa was recorded including two species listed under the NSW Threatened Species Conservation Act 1995: Eucalyptus canobolensis and Eucalyptus saxicola. Additionally the reserve contains the Mount Canobolas Xanthoparmelia lichen community recently listed on the NSW Threatened Species Conservation Act 1995. This paper describes the seven communities and discusses their significance and distribution within the Recreation Area. A vegetation map and species list are provided.
The vegetation of Basket Swamp National Park (2820 ha), 30 km north east of Tenterfield (28°54’S, 152°09’E) in the Tenterfield Shire, in the Northern Tablelands Bioregion NSW, is described. Seven vegetation communities are mapped based on survey of plots, subsequent ground-truthing, air photo interpretation and substrate.
Communities described are: (1) Eucalyptus campanulata (Blackbutt) – Eucalyptus cameronii (Diehard Stringybark) Open Forests, (2) Eucalyptus campanulata (Blackbutt) – Eucalyptus cameronii (Diehard Stringybark) Grassy Open Forests, (3) Leptospermum trinervium (Tea-tree) – Leptospermum polygalifolium subsp. transmontanum (Creek Tea-tree) Riparian Scrub, (4) Leptospermum trinervium (Tea-tree) – Kunzea obovata (Pink Kunzea) – Leptospermum novae-angliae (New England Tea-tree) Heaths & Shrublands, (5) Ceratopetalum apetalum (Coachwood) – Lophostemon confertus (Brush Box) Closed Forest, (6) Eucalyptus obliqua (Messmate) – Eucalyptus campanulata (Blackbutt) Tall Open Forests, and (7) Baeckea omissa (Baeckea) – Baloskion stenocoleum (Sedge) Heathy Sedgelands.
All but two communities (3 & 7) were considered adequately reserved locally, no listed endangered or vulnerable communities were found. Thirty-six taxa were considered to be of conservation significance of which two are listed as vulnerable on Schedule 2 of the NSW TSC Act.A further nine have been reported under the RoTAP criteria.
The vegetation of Imbota Nature Reserve (30° 35’S, 151° 45’E) (218 ha in area), 10 km south-east of Armidale, and Yina Nature Reserve (30° 29’S, 151° 45’E), (101 ha in area), 10 km east of Armidale, on the Northern Tablelands, NSW, is described. Based on classification analyses, air photo interpretation and ground-truthing, seven vegetation communities are described and mapped : 1. Eucalyptus caliginosa (Broad-leaved Stringybark) Grassy Forest and Woodland on deep soils at Imbota; 2. Eucalyptus viminalis (Manna Gum) Grassy Forest and Woodland, Community; 3. Eucalyptus caliginosa (Broad-leaved Stringybark) Grassy Forest and Woodland on shallow soils at Imbota; 4. Eucalyptus caliginosa (Broad-leaved Stringybark) Grassy Forest and Woodland at Yina; 5. Eucalyptus blakelyi (Blakely’s Red Gum) – Eucalyptus melliodora (Yellow Box) Woodland; 6. Eucalyptus viminalis (Manna Gum) – Eucalyptus nova-anglica (New England Peppermint) Grassy Forest and Woodland and 7. Riparian Herbfields 252 vascular plant taxa (from 59 families) were recorded from the two reserves, 179 species in Imbota NR, the larger reserve and 209 in Yina NR. The lower species richness at Imbota is likely to have resulted human disturbance rather than from overall habitat heterogeneity.