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| McPherson Plateau | |
|---|---|
| Name | McPherson Plateau |
| Location | Australia; Queensland |
| Coordinates | 27°S 152°E |
| Area | ~1,200 km² |
| Elevation | 700–900 m |
| Highest | unnamed summit near Lamington National Park |
| Geology | volcanic basalts, rhyolites, ignimbrites |
| Biome | sclerophyll woodland, subtropical rainforest remnants |
| Protected | parts within Lamington National Park, Border Ranges National Park |
McPherson Plateau
The McPherson Plateau is an upland region on the border of Queensland and New South Wales in Australia, forming part of the Great Dividing Range corridor that includes Lamington National Park and the Border Ranges. The plateau comprises dissected basaltic tablelands, elevated between approximately 700 and 900 metres, and is notable for its remnant subtropical rainforests, endemic flora and fauna, and a history of Indigenous occupation and European pastoral settlement. It lies within catchments draining to the Brisbane River, Clarence River, and coastal systems near Gold Coast, Queensland.
The plateau occupies a mosaic of ridges, escarpments and shallow valleys between the Scenic Rim and the Tweed Volcano complex, adjacent to protected areas such as Springbrook National Park and Nightcap National Park. Major features include the McPherson Range escarpment, Wollumbin-related topography, and drainage divides feeding the Logan River and Richmond River. Road access historically follows passes like the Beaudesert–Kyogle corridor and state routes connecting Brisbane, Lismore, New South Wales, and Tweed Heads. Settlements on or near the plateau include the townships around Beaudesert and agricultural localities in the catchment of Oxley Creek.
The plateau is underlain by Tertiary volcanic suites associated with the Tweed Volcano caldera and older parts of the Great Dividing Range; rock types include olivine basalts, rhyolitic ignimbrites, and volcaniclastics tied to episodes contemporary with the Fossil Bluff and Burringbar volcanism. Peneplained basaltic lava flows overlying older sedimentary strata produced fertile red-brown loams and clays, which weather to rich basaltic soils similar to those on the Southeastern Highlands and Darling Downs. Tectonic uplift and differential erosion have produced the plateau’s escarpments and basalt-capped tablelands, with Quaternary alluvial deposits in valley floors.
The plateau experiences a subtropical highland climate strongly influenced by orographic uplift, the East Australian Current, and seasonal moist onshore flows from the Tasman Sea. Mean annual rainfall ranges from about 1,200 mm to over 2,000 mm at higher escarpments near Lamington, with pronounced orographic enhancement during the austral summer associated with East Coast Lows and La Niña events. Mean temperatures are cooler than adjacent lowlands, with frequent mist and cloud immersion supporting rainforest microclimates and frost occurrences at the coolest elevations during winter cold snaps.
Vegetation mosaics include remnant subtropical rainforest pockets, wet sclerophyll forests dominated by Eucalyptus species, montane heath, and cleared agricultural grasslands. The plateau is a refuge for endemic and disjunct taxa shared with the Gondwana Rainforests of Australia such as ancient gymnosperms and primitive angiosperms occurring in the same network as Wollumbin and the Border Ranges. Faunal assemblages contain threatened species recorded in adjacent reserves including the Albert's Lyrebird-associated communities, rainforest-dependent frogs also found in Nightcap National Park, and several marsupials with affinities to populations in Springbrook and Lamington. The area supports significant birdlife corridors linking coastal and inland habitats used by migratory species recorded at Moreton Bay and inland wetlands.
The plateau lies within the traditional lands of several Aboriginal nations, including custodial groups linked to the Yugambeh and Bundjalung cultural blocs, who maintain songlines, ceremonial sites, and oral histories tied to prominent features in the landscape such as escarpments and watercourses. Archaeological evidence and ethnobotanical knowledge indicate long-term use of rainforest resources, seasonal movement between coastal and upland zones, and management practices analogous to fire regimes also recorded among neighbouring groups near Gold Coast and Northern Rivers. European exploration and timber extraction began in the 19th century, followed by pastoral leases and agricultural clearing tied to colonial expansion from Sydney and Brisbane.
Land use on the plateau is a patchwork of conservation reserves, national parks, timber remnants, grazing properties, and small-scale dairying and horticulture linked to markets in Brisbane and Byron Bay. Historic logging targeted high-quality rainforest timbers and basaltic soils favored dairy and beef production; more recent economic activities include eco-tourism associated with Lamington National Park, niche agriculture supplying Gold Coast markets, and conservation-driven volunteer programs coordinated with organisations such as the National Parks and Wildlife Service (New South Wales) and equivalents in Queensland.
Conservation efforts focus on protecting remnant rainforest fragments and reconnecting corridors between the Gondwana Rainforests of Australia World Heritage areas through revegetation, invasive species control, and feral predator management consistent with strategies used in Conservation Volunteers Australia and regional catchment groups like the Southern Queensland natural resource management bodies. Management challenges include balancing agricultural interests, wildfire risk reduction aligned with Indigenous cultural burning knowledge, and mitigating impacts from climate variability and nearby urban expansion centered on Gold Coast, Queensland and Northern Rivers, New South Wales population centres.
Category:Plateaus of Australia Category:Geography of Queensland Category:Geography of New South Wales