Sandstone and rust : designing the qualities of Sydney harbour

Landscape architecture is built from place. What place is depends how one reads a site, which then determines what qualities are engaged with, and how they are engaged with, by design. Sydney Harbour is one of the most celebrated and distinctive harbours in the world. The qualities of the indigenous, pre-European landscape have been referred to regularly in the history of Australian landscape architecture as a source of inspiration for a truly Australian language of landscape design. A range of different models of such an Australian language have been proposed and tested on landscape design sites on Sydney Harbour, models that are in a discourse both with the specific landscape and with local landscape architecture theory and practice, particularly in relation to ideas of ‘appropriateness’ in Australian landscape architecture. This essay examines arguments from the 1970s that proposed a ‘palette’ approach to appropriateness, along with a key project from that period, Long Nose Point Park, that demonstrates this approach. The essay will then discuss three recent projects on the Harbour and demonstrate that these projects transcend the ‘palette’ approach by engaging with specific relationships on their sites (a ‘relationships’ approach) that are tied to the cultural occupation of Sydney Harbour. Along the way, the reader will be introduced to the key figures and history of landscape architecture in Australia, and to the geography of Sydney Harbour with its various ecologies and milieus

Polyfluoroalkyl chemicals in pooled blood serum from infants, children and adults in Australia

Polyfluoroalkyl chemicals (PFCs) have been used worldwide for more than 50 years in a wide variety of industrial and consumer products. Limited data exist on human exposure to PFCs in the Southern Hemisphere. Human blood serum collected in southeast Queensland, Australia, in 2006−2007 from 2420 donors was pooled according to age (cord blood, 0−0.5, 0.6−1, 1.1−1.5, 1.6−2, 2.1−2.5, 2.6−3, 3.1−3.5, 3.6−4, 4.1−6, 6.1−9, 9.1−12, 12.1−15, 16−30, 31−45, 46−60, and >60 years) and gender and was analyzed for eight PFCs. Across all pools, perfluorooctane sulfonate (PFOS) was detected at the highest mean concentration (15.2 ng/mL) followed by perfluorooctanoate (PFOA, 6.4 ng/mL), perfluorohexane sulfonate (PFHxS, 3.1 ng/mL), perfluorononanoate (PFNA, 0.8 ng/mL), 2-(N-methyl-perfluorooctance sulfonamide) acetate (Me-PFOSA-AcOH, 0.66 ng/mL), and perfluorodecanoate (PFDeA, 0.29 ng/mL). Perfluorooctane sulfonamide was detected in only 24% of the pools, and 2-(N-ethylperfluorooctane sulfonamide) acetate was detected in only one. PFOS concentrations were significantly higher in pools from adult males than from adult females (p = 0.002); no gender differences were apparent in the pools from children (<12 years old). The highest mean concentrations of PFOA, PFHxS, PFNA, PFDeA, and Me-PFOSA-AcOH were found in children <15 years, while PFOS was highest in adults >60 years. Investigation into the sources and exposure pathways in Australia, in particular for children, is necessary as well as continued biomonitoring to determine the potential effects on human concentrations as a result of changes in the PFC manufacturing practices, including the cessation of production of several PFCs.