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HClNC Vegetation Classification & mapping Project: Volume 1: Vegetation Classification Technical Report Appendix 10: Grasslands communities expert review workshop outcomes Appendix 10: Grasslands communities expert review workshop outcomes continued ID Community Diagnostic species Soils & geology Landscape & climate Locations Comments Biometric Derived grasslands in coastal valleys dominated by Aristida vagans / Microlaena stipoides / Themeda australis / Cymbopogon refractus / Oplismenus aemulus / O. imbecillus Typically heavily grazed and likely had tree canopy cleared or greatly thinned / modified (i.e. derived from grassy woodlands) Low to medium fertility soils, e.g. Permian-derived soils; sedimentary soils Various associations: Aristida / Bothriochloa macra; Aristida / Eragrostis; Aristida / Cymbopogon refractus; Bothriochloa decipiens / Dichanthium sericeum; Chloris truncata / Sporobolus creber / Bothriochloa; Eragrostis leptostachya / Chloris ventricosa / Digitaria divaricatissima / Digitaria brownii / & others from above; may include small areas of Aristida ramosa / Austrostipa scabra / Bothriochloa decipiens on poorer soils on lower parts of Merriwa plateau landscape; may include areas of derived grasslands from modified / cleared Yellow Box communities (may represent White Box / Yellow Box / Blakely’s Red Gum woodland eeC) GC1 Mixed derived grasslands of lower fertility soils on valley floor 284 Typically have no or low tree cover; may include areas of derived grassland from modified / cleared Yellow Box communities (if so may represent White Box / Yellow Box / Blakely’s Red Gum woodland eeC) Upper Hunter: Merriwa, Scone, Bunnan, Denman & Cassilis areas Black soils of Merriwa plateau, south of Liverpool Range; grey clay; heavy clay; black basaltic soils Austrostipa aristiglumis; may also be dominated or co-dominated by Aristida spp. (e.g. Aristida personata on Merriwa plateau), Dichanthium sericeum, Panicum decompositum, Themeda avacenea, Austrostipa scabra & Austrodanthonia spp. GC 2 Plains Grass grassland of higher fertility soils Typically in ungrazed situations (Sorghum sensitive to grazing). Often in ungrazed / rarely grazed road & railway reserves. Known from Rouchel, Mt Royal & Gresford. Targeted surveying required to define spatial distribution. Occurs on a range of soils: shales, sandstones GC 3 Themeda australis / sorghum leiocladum grasslands
Appendix 10: Grasslands communities expert review workshop outcomes continued ID Community Diagnostic species Soils & geology Landscape & climate Locations Comments Biometric Restricted to ungrazed roadsides; possibly just variant of GC1 (mixed derived grasslands) but considered to be a higher quality grassland reflective of less-disturbed habitats Capillipedium spicigerum Targetted surveying required to define spatial distribution GC 4 Capillipedium spicigerum grassland aPPeNDIx 10 Grasslands communities expert review workshop outcomes Includes derived grasslands of the upper slopes, ridgetops and frost hollows of the Upper Hunter & Barrington ranges: dominated by P. sieberiana / P. Labillardieri /Themeda australis Likely derived from woodland / forest communities; typically tree canopy removed or greatly reduced (i.e. not naturally without trees) Upper Hunter, Barrington Tops, Mt Royal & Liverpool Range Rich basaltic soils >600m; 1. Valley floors of higher altitudes (e.g. linear riparian areas & chains of ponds); 2. Slopes of higher altitude Two variants / associations: 1. P. labillardieri / M. stipoides 2. P. siberiana / M. stipoides GC 5 Poa spp. / Microlaena stipoides derived grasslands of higher altitudes Represents listed eeC Includes ‘Headland grasslands’ Seacliffs & headlands all coastal areas but only in small areas due to restrictive habitats Themeda australis / Lomandra longifolia / Westringia fruticosa / Isolepis nodosa GC 6 Themeda grasslands on seacliffs & coastal headlands 285 Scattered occurrences along coast and on offshore islands Coastal sands Sand dunes (not headlands): restricted to sand dunes (typically fore dunes); considered littoral species; may be confused with introduced species which RBG have records of co-existing; known from Indian Head; distribution unknown in Hunter Typical variants include: 1. Zoysia macrantha 2. Spinifex sericeus 3. Sporobolus virginicus var. minor Other co-dominants or associated species: Themeda australis, Microlaena stipoides, Lomandra longifolia (possibly also Austrofestuca littoralis but S Jacobs considered unlikely to be present in Hunter or not as distinct grassland) GC 7 Coastal dune grasslands Likely derived from woodland / open forest communities; burnt repeatedly Widespread: Lower, Central & Upper Hunter Valley; Karuah & Manning valleys; foothills; to lesser extent in Wollombi & Central Coast areas Imperata cylindrica; often co-dominated by Bracken fern, Pteridium esculentum GC 8 Derived Blady Grass grasslands
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Hunter, Central & Lower North Coast
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Classification Expert Review Panel
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3.4 Vegetation community analysis .
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List of abbreviations API aerial ph
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HClNC Vegetation Classification & m
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CHaPter 2 Vegetation of the study a
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CHaPTeR 3 Method of data collection
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CHaPTeR 4 Results 4.1 Data audit an
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BIBLIOGRaPHY Anderson, R. H. (1961)
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Appendix 6: Collated review continu
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