Landscape Architect & Specifier News

MAR 2017

LASN is a photographically oriented, professional journal featuring topics of concern and state-of-the-art projects designed or influenced by registered Landscape Architects.

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80 Landscape Architect and Specifier News In conveying the water story through its visible processes the project is educating the community about the importance of urban water management and the interdependent nature of our urban and natural environments. Turpin + Crawford's 'Water Falls' installation celebrates the passage of water from the end of the water treatment "train" and back into the system at Wirrambi Wetland, while supplementing "The Cascades" in providing critical aeration of the stored waters. Turpin + Crawford Studio also worked with TDEP and Alluvium to conceive the water "exhaust fans" that celebrate the transfer of water from bioremediation "paddies" to the lagoons. These play on the spirit of water and its interactions with topography, form, surfaces, plant life and fauna. The fans only function for two to three hours after heavy rainfall, reflecting that the bioremediation beds are at capacity. After an intensive period of easing in the Water Re-Use Project is now fully operational and intrinsically merged within the park setting. The park's fauna and flora is thriving, with new habitats created and existing ones protected and enhanced throughout the park. This project has made a significant contribution to the realization of the Sustainable Sydney 2030 targets for local water capture and reuse, and promises the opportunity to significantly expand reuse through the reticulation of recycled water to local industry. Top: Buffer shrubs on wetland embankments provide habitat and screen gabion retaining walls. Existing aquatic plants were retained and replaced as necessary. Eucalypt woodlands extend into the wetland to shade the path. Tree plantings took advantage of new soil reserves west of the wetland. PHOTO: ETHAN ROHLOFF PHOTOGRAPHY Above: The ponds at Sydney Park suffered poor water quality and outbreaks of blue-green algae and Azolla. Azolla (aka mosquito or duckweed fern, and fairy moss) is a pernicious genus (Salviniaceae) of aquatic ferns that can stagnate waterways in periods of low rainfall and during the warmer months. This photo of Canning River in Western Australia shows how invasive Azolla can be. PHOTO: GNANGARRA, COMMONS.WIKIMEDIA.ORG Wetland Continued from page 78

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